80_FR_43786 80 FR 43645 - Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France) Helicopters

80 FR 43645 - Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France) Helicopters

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 80, Issue 141 (July 23, 2015)

Page Range43645-43647
FR Document2015-17952

We propose to supersede airworthiness directive (AD) 2014-07- 52 for certain Airbus Helicopters (previously Eurocopter France) Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. AD 2014-07-52 currently requires repetitively inspecting certain reinforcement angles of the rear structure to tailboom junction frame (reinforcement angles) for a crack at 10 hour time-in-service (TIS) intervals, repairing any cracked reinforcement angle, and allows an optional repetitive inspection with a 165 hour TIS inspection interval as a terminating action for the 10 hour TIS inspections. This proposed AD would retain the inspection requirements of AD 2014-07-52 and require the inspection of the area around each reinforcement angle screw hole as terminating action to the 10 hour TIS inspections. These proposed actions are intended to detect a crack in the reinforcement angle, which if not corrected, could result in loss of the tailboom and subsequent loss of control of the helicopter.

Federal Register, Volume 80 Issue 141 (Thursday, July 23, 2015)
[Federal Register Volume 80, Number 141 (Thursday, July 23, 2015)]
[Proposed Rules]
[Pages 43645-43647]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2015-17952]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-2568; Directorate Identifier 2014-SW-026-AD]
RIN 2120-AA64


Airworthiness Directives; Airbus Helicopters (Previously 
Eurocopter France) Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: We propose to supersede airworthiness directive (AD) 2014-07-
52 for certain Airbus Helicopters (previously Eurocopter France) Model 
AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, 
AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. AD 
2014-07-52 currently requires repetitively inspecting certain 
reinforcement angles of the rear structure to tailboom junction frame 
(reinforcement angles) for a crack at 10 hour time-in-service (TIS) 
intervals, repairing any cracked reinforcement angle, and allows an 
optional repetitive inspection with a 165 hour TIS inspection interval 
as a terminating action for the 10 hour TIS inspections. This proposed 
AD would retain the inspection requirements of AD 2014-07-52 and 
require the inspection of the area around each reinforcement angle 
screw hole as terminating action to the 10 hour TIS inspections. These 
proposed actions are intended to detect a crack in the reinforcement 
angle, which if not corrected, could result in loss of the tailboom and 
subsequent loss of control of the helicopter.

DATES: We must receive comments on this proposed AD by September 21, 
2015.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Docket: Go to http://www.regulations.gov. Follow the online instructions for sending your 
comments electronically.
     Fax: 202-493-2251.
     Mail: Send comments to the U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590-0001.
     Hand Delivery: Deliver to the ``Mail'' address between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov or in person at the Docket Operations Office 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains this proposed AD, the European 
Aviation Safety Agency (EASA) AD, the economic evaluation, any comments 
received and other information. The street address for the Docket 
Operations Office (telephone 800-647-5527) is in the ADDRESSES section. 
Comments will be available in the AD docket shortly after receipt.
    For service information identified in this proposed AD, contact 
Airbus Helicopters, Inc., 2701 N. Forum Drive, Grand Prairie, TX 75052; 
telephone (972) 641-0000 or (800) 232-0323; fax (972) 641-3775; or at 
http://www.airbushelicopters.com/techpub. You may review service 
information at the FAA, Office of the Regional Counsel, Southwest 
Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177.

FOR FURTHER INFORMATION CONTACT: Robert Grant, Aviation Safety 
Engineer, Safety Management Group, FAA, 10101 Hillwood Pkwy., Fort 
Worth, TX 76177; telephone (817) 222-5110; email [email protected].

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to participate in this rulemaking by submitting 
written comments, data, or views. We also invite comments relating to 
the economic, environmental, energy, or federalism impacts that might 
result from adopting the proposals in this document. The most helpful 
comments reference a specific portion of the proposal, explain the 
reason for any recommended change, and include supporting data. To 
ensure the docket does not contain duplicate comments, commenters 
should send only one copy of written comments, or if comments are filed 
electronically, commenters should submit only one time.
    We will file in the docket all comments that we receive, as well as 
a report summarizing each substantive public contact with FAA personnel 
concerning this proposed rulemaking. Before acting on this proposal, we 
will consider all comments we receive on or before the closing date for 
comments. We will consider comments filed after the comment period has 
closed if it is possible to do so without incurring expense or delay. 
We may change this proposal in light of the comments we receive.

Discussion

    On May 21, 2014, we issued AD 2014-07-52, Amendment 39-17858, 79 FR 
33054, June 10, 2014) for Airbus Helicopters Model AS350B, AS350BA, 
AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, 
AS355F1, AS355F2, AS355N, and AS355NP helicopters with Modification 
(MOD) 07 3215 installed or with a reinforcement angle, part-number (P/
N) 350A08.2493.21 or 350A08.2493.23, installed. AD 2014-07-52 requires, 
for helicopters with 640 or more hours TIS, within 10 hours TIS and 
thereafter at

[[Page 43646]]

intervals not exceeding 10 hours TIS, repetitively inspecting each 
reinforcement angle for a crack. If there is a crack, AD 2014-07-52 
requires, before further flight, repairing the reinforcement angle. As 
an optional terminating action for the repetitive 10 hour TIS 
inspections, AD 2014-07-52 allows a repetitive 165 hour TIS inspection 
of the reinforcement angle under each attaching screw for a crack.
    AD 2014-07-52 was prompted by Emergency AD No. 2014-0076-E, dated 
March 25, 2014, issued by EASA, which is the Technical Agent for the 
Member States of the European Union, to correct an unsafe condition for 
Airbus Helicopters Model AS350B, AS350BA, AS350BB, AS350B1, AS350B2, 
AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP 
helicopters with MOD 07 3215 or with at least one reinforcement angle, 
P/N 350A08.2493.21 or P/N 350A08.2493.23, installed. EASA advises that 
during the inspection of several AS355 helicopters, cracks found in the 
reinforcement angles had initiated on the non-visible surface of the 
angle, and that this condition, if not corrected, could lead to further 
crack propagation and subsequent loss of the tailboom, resulting in 
loss of control of the helicopter. The EASA AD requires repetitive 
inspections of the reinforcement angles, and states that a terminating 
action is under investigation.

Actions Since AD 2014-07-52 Was Issued

    Since we issued AD 2014-07-52 (79 FR 33054, June 10, 2014), we have 
determined that the optional terminating action in AD 2014-07-52 should 
be a required terminating action. This NPRM would retain the actions in 
AD 2014-07-52 but would require the 165-hour TIS visual inspection as 
terminating action for the 10-hour TIS inspections. In addition, 
because MOD 07 3215 installed reinforcement angle P/Ns 350A08.2493.21 
and 350A08.2493.23, AD 2014-07-52 was written to apply to helicopters 
with either the reinforcement angle P/Ns or with MOD 07 3215, so that 
operators could more easily determine whether AD 2014-07-52 applied to 
their aircraft. Airbus Helicopters then developed MOD 07 3232, which 
removes reinforcement angle P/N 350A08.2493.21 and P/N 350A08.2493.23. 
Because a helicopter with both MOD 07 3215 and MOD 07 3232 in its 
aircraft records would not have reinforcement angle P/N 350A08.2493.21 
or P/N 350A08.2493.23 installed, this NPRM would revise the 
applicability to no longer include helicopters with MOD 07 3215 and to 
include a note clarifying that the AD would not apply if MOD 07 3232 is 
installed.

Comments

    After AD 2014-07-52 (79 FR 33054, June 10, 2014), was published, we 
received comments from three commenters.

Request

    Two commenters requested that the AD not be applicable to aircraft 
with MOD 07 3232 installed, as this modification improved the 
attachment at the junction frame to prevent cracking.
    We partially agree. Although AD 2014-07-52 does not apply to 
helicopters with MOD 07 3232 installed, we have revised the language in 
the proposed AD so that this exclusion is more clear.
    Two commenters requested that we increase the time between 
inspections or allow the repetitive inspections to end if no cracks are 
found after a few inspections. The commenters stated that the 
inspection frequency of the repetitive 165-hour TIS inspection is 
excessive and that if correctly installed, the doublers do not crack. 
One commenter stated that in practice the 165-hour inspection is being 
completed at every 100-hour inspection to avoid repeated grounding of 
the aircraft. Another commenter stated that frequent removal of the 
bolts and nuts could affect the airworthiness of the aircraft.
    We do not agree. Analysis has demonstrated that cracking has been 
found in more than one location, which indicates there may be more than 
one cause of the cracking. The uncertainty regarding the root cause of 
the cracking supports requiring the 165-hour TIS inspections without 
any changes.

FAA's Determination

    These helicopters have been approved by the aviation authority of 
France and are approved for operation in the United States. Pursuant to 
our bilateral agreement with France, EASA, its technical 
representative, has notified us of the unsafe condition described in 
its AD. We are proposing this AD because we evaluated all known 
relevant information and determined that an unsafe condition is likely 
to exist or develop on other products of the same type design.

Related Service Information Under 1 CFR Part 51

    Airbus Helicopters issued Emergency Alert Service Bulletin (EASB) 
No. 05.00.70 for Model AS350B, BA, BB, Bl, B2, B3, and D helicopters 
and EASB No. 05.00.62 for Model AS355E, F, F1, F2, N, and NP 
helicopters, both Revision 0 and dated March 24, 2014. EASB No. 
05.00.70 and EASB No. 05.00.62 describe procedures for inspecting the 
angle reinforcements for a crack. This service information is 
reasonably available because the interested parties have access to it 
through their normal course of business or by the means identified in 
the ADDRESSES section of this NPRM.

Proposed AD Requirements

    This proposed AD would retain the 10 hour TIS repetitive inspection 
of the junction frame required by AD 2014-07-52 (79 FR 33054, June 10, 
2014), and would also require the repetitive 165 hour TIS inspection of 
the junction frame bores as a terminating action for the 10 hour TIS 
inspection. This proposed AD would also revise the applicability 
paragraph by no longer including helicopters with MOD 07 3215.

Differences Between This Proposed AD and the EASA AD

    This proposed AD is not applicable to the AS350BB as that model is 
not type certificated in the U.S. This proposed AD applies to Airbus 
Helicopters Model AS350C and AS350D1 helicopters because these 
helicopters have a similar design. Finally, the EASA AD requires 
operators to contact Airbus Helicopters if there is a crack, and this 
proposed AD does not, however it does require repairing the crack 
before further flight.

Interim Action

    We consider this proposed AD to be an interim action. If final 
action is later identified, we might consider further rulemaking then.

Costs of Compliance

    We estimate that this proposed AD would affect 822 helicopters of 
U.S. Registry. We estimate that operators may incur the following costs 
in order to comply with this proposed AD. At an average labor rate of 
$85 per hour, inspecting the reinforcement angles for a crack without 
removing the screws would require 1.0 work-hour, for a cost per 
helicopter of $85 and a total cost of $69,870 for the U.S. fleet per 
inspection cycle. Removing the screws and inspecting the reinforcement 
angle would require 2 work-hours, for a cost per helicopter of $170 and 
a total cost of $139,740 for the U.S. fleet, per inspection cycle. If 
required, repairing a cracked reinforcement angle would require about 
10 work-hours, and

[[Page 43647]]

required parts would cost about $300, for a total cost per helicopter 
of $1,150.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation 
Programs,'' describes in more detail the scope of the Agency's 
authority.
    We are issuing this rulemaking under the authority described in 
``Subtitle VII, Part A, Subpart III, Section 44701: General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would not 
have a substantial direct effect on the States, on the relationship 
between the national Government and the States, or on the distribution 
of power and responsibilities among the various levels of government.
    For the reasons discussed, I certify this proposed regulation:
    1. Is not a ``significant regulatory action'' under Executive Order 
12866;
    2. Is not a ``significant rule'' under the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979);
    3. Will not affect intrastate aviation in Alaska to the extent that 
it justifies making a regulatory distinction; and
    4. Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.
    We prepared an economic evaluation of the estimated costs to comply 
with this proposed AD and placed it in the AD docket.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by removing Airworthiness Directive (AD) 
2014-07052, Amendment 39-17858 (79 FR 33054, June 10, 2014), and adding 
the following new AD:

Airbus Helicopters (previously Eurocopter France): Docket No. FAA-
2015-2568; Directorate Identifier 2014-SW-026-AD.

(a) Applicability

    This AD applies to Airbus Helicopters Model AS350B, AS350BA, 
AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, 
AS355F1, AS355F2, AS355N, and AS355NP helicopters, with a 
reinforcement angle part number (P/N) 350A08.2493.21 or P/N 
350A08.2493.23 installed, certificated in any category.

    Note 1 to paragraph (a) of this AD:  Helicopters with 
Modification (MOD) 073232 do not have P/N 350A08.2493.21 or P/N 
350A08.2493.23 installed.

(b) Unsafe Condition

    This AD defines the unsafe condition as a crack in a rear 
structure to tailboom junction frame reinforcement angle 
(reinforcement angle), which if not detected could result in loss of 
the tail boom and subsequent loss of control of the helicopter.

(c) Affected ADs

    This AD supersedes AD 2014-07-52, Amendment 39-17858 (79 FR 
33054, June 10, 2014).

(d) Comments Due Date

    We must receive comments by September 21, 2015.

(e) Compliance

    You are responsible for performing each action required by this 
AD within the specified compliance time unless it has already been 
accomplished prior to that time.

(f) Required Actions

    (1) For helicopters with 640 or more hours time-in-service (TIS) 
since installation of MOD 07 3215 or since installation of an 
applicable reinforcement angle, within 10 hours TIS, and thereafter 
at intervals not exceeding 10 hours TIS, inspect each reinforcement 
angle for a crack as depicted in Figure 1 of Airbus Helicopters 
Emergency Alert Service Bulletin No. 05.00.70 for Model AS350B, 
AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, and AS350D1 
helicopters and Airbus Helicopters Emergency Alert Service Bulletin 
No. 05.00.62 for AS355E, AS355F, AS355F1, AS355F2, AS355N, and 
AS355NP helicopters, both Revision 0 and dated March 24, 2014.
    (2) If there is a crack, before further flight, repair the 
reinforcement angle in a manner approved by the manager listed in 
paragraph (h)(1) of this AD.
    (3) Within 165 hours TIS after the first inspection required by 
paragraph (f)(1) of this AD, and thereafter at intervals not 
exceeding 165 hours TIS, remove screw No. 5 from the reinforcement 
angle, thoroughly clean the area around the hole and inspect the 
reinforcement angle for a crack. If there is not a crack, reinstall 
the screw. Sequentially repeat the steps required by this paragraph 
for screws No. 6 through No. 12. If there is a crack, comply with 
paragraph (f)(2) of this AD. Accomplishment of the inspection 
required by this paragraph terminates the repetitive inspections 
required by paragraph (f)(1) of this AD.

(g) Special Flight Permit

    Special flight permits are prohibited.

(h) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Safety Management Group, FAA, may approve AMOCs 
for this AD. Send your proposal to: Robert Grant, Aviation Safety 
Engineer, Safety Management Group, FAA, 10101 Hillwood Pkwy., Fort 
Worth, TX 76177; telephone (817) 222-5110; email 
[email protected].
    (2) For operations conducted under a 14 CFR part 119 operating 
certificate or under 14 CFR part 91, subpart K, we suggest that you 
notify your principal inspector, or lacking a principal inspector, 
the manager of the local flight standards district office or 
certificate holding district office before operating any aircraft 
complying with this AD through an AMOC.
    (3) AMOCs approved previously in accordance with AD 2014-07-52, 
Amendment 39-17858 (79 FR 33054, June 10, 2014) are approved as 
AMOCs for the corresponding requirements of paragraph (f)(2) of this 
AD.

(i) Additional Information

    The subject of this AD is addressed in European Aviation Safety 
Agency (EASA) AD 2014-0076-E, dated March 25, 2014. You may view the 
EASA AD on the Internet at http://www.regulations.gov in Docket No. 
FAA-2015-2568.

(j) Subject

    Joint Aircraft Service Component (JASC) Code: 5302: Rotorcraft 
Tailboom.

    Issued in Fort Worth, Texas, on July 15, 2015.
Bruce E. Cain,
Acting Directorate Manager, Rotorcraft Directorate, Aircraft 
Certification Service.
[FR Doc. 2015-17952 Filed 7-22-15; 8:45 am]
 BILLING CODE 4910-13-P



                                                                             Federal Register / Vol. 80, No. 141 / Thursday, July 23, 2015 / Proposed Rules                                        43645

                                                    required by this AD if it is approved by the             SUMMARY:   We propose to supersede                      For service information identified in
                                                    Boeing Commercial Airplanes Organization                 airworthiness directive (AD) 2014–07–                 this proposed AD, contact Airbus
                                                    Designation Authorization (ODA) that has                 52 for certain Airbus Helicopters                     Helicopters, Inc., 2701 N. Forum Drive,
                                                    been authorized by the Manager, Seattle
                                                    ACO, to make those findings. For a repair
                                                                                                             (previously Eurocopter France) Model                  Grand Prairie, TX 75052; telephone
                                                    method to be approved, the repair must meet              AS350B, AS350BA, AS350B1,                             (972) 641–0000 or (800) 232–0323; fax
                                                    the certification basis of the airplane, and the         AS350B2, AS350B3, AS350C, AS350D,                     (972) 641–3775; or at http://
                                                    approval must specifically refer to this AD.             AS350D1, AS355E, AS355F, AS355F1,                     www.airbushelicopters.com/techpub.
                                                       (4) For service information that contains             AS355F2, AS355N, and AS355NP                          You may review service information at
                                                    steps that are labeled as Required for                   helicopters. AD 2014–07–52 currently                  the FAA, Office of the Regional Counsel,
                                                    Compliance (RC), the provisions of                       requires repetitively inspecting certain              Southwest Region, 10101 Hillwood
                                                    paragraphs (i)(4)(i) and (i)(4)(ii) apply.
                                                                                                             reinforcement angles of the rear                      Pkwy., Room 6N–321, Fort Worth, TX
                                                       (i) The steps labeled as RC, including
                                                    substeps under an RC step and any figures                structure to tailboom junction frame                  76177.
                                                    identified in an RC step, must be done to                (reinforcement angles) for a crack at 10              FOR FURTHER INFORMATION CONTACT:
                                                    comply with the AD. An AMOC is required                  hour time-in-service (TIS) intervals,                 Robert Grant, Aviation Safety Engineer,
                                                    for any deviations to RC steps, including                repairing any cracked reinforcement                   Safety Management Group, FAA, 10101
                                                    substeps and identified figures.                         angle, and allows an optional repetitive
                                                       (ii) Steps not labeled as RC may be                                                                         Hillwood Pkwy., Fort Worth, TX 76177;
                                                                                                             inspection with a 165 hour TIS                        telephone (817) 222–5110; email
                                                    deviated from using accepted methods in                  inspection interval as a terminating
                                                    accordance with the operator’s maintenance                                                                     robert.grant@faa.gov.
                                                    or inspection program without obtaining                  action for the 10 hour TIS inspections.
                                                                                                                                                                   SUPPLEMENTARY INFORMATION:
                                                    approval of an AMOC, provided the RC steps,              This proposed AD would retain the
                                                    including substeps and identified figures, can           inspection requirements of AD 2014–                   Comments Invited
                                                    still be done as specified, and the airplane             07–52 and require the inspection of the                  We invite you to participate in this
                                                    can be put back in an airworthy condition.               area around each reinforcement angle                  rulemaking by submitting written
                                                    (j) Related Information                                  screw hole as terminating action to the               comments, data, or views. We also
                                                                                                             10 hour TIS inspections. These                        invite comments relating to the
                                                       (1) For more information about this AD,
                                                    contact Melanie Violette, Senior Aerospace               proposed actions are intended to detect               economic, environmental, energy, or
                                                    Engineer, Airframe Branch, ANM–120S,                     a crack in the reinforcement angle,                   federalism impacts that might result
                                                    FAA, Seattle Aircraft Certification Office               which if not corrected, could result in               from adopting the proposals in this
                                                    (ACO), 1601 Lind Avenue SW., Renton, WA                  loss of the tailboom and subsequent loss              document. The most helpful comments
                                                    98057–3356; phone: 425–917–6422; fax: 425–               of control of the helicopter.
                                                    917–6590; email: melanie.violette@faa.gov.                                                                     reference a specific portion of the
                                                       (2) For service information identified in             DATES: We must receive comments on                    proposal, explain the reason for any
                                                    this AD, contact Boeing Commercial                       this proposed AD by September 21,                     recommended change, and include
                                                    Airplanes, Attention: Data & Services                    2015.                                                 supporting data. To ensure the docket
                                                    Management, P.O. Box 3707, MC 2H–65,
                                                                                                             ADDRESSES:   You may send comments by                 does not contain duplicate comments,
                                                    Seattle, WA 98124–2207; telephone 206–                                                                         commenters should send only one copy
                                                    544–5000, extension 1; fax 206–766–5680;                 any of the following methods:
                                                                                                                                                                   of written comments, or if comments are
                                                    Internet https://www.myboeingfleet.com. You                • Federal eRulemaking Docket: Go to
                                                                                                                                                                   filed electronically, commenters should
                                                    may view this referenced service information             http://www.regulations.gov. Follow the
                                                    at the FAA, Transport Airplane Directorate,                                                                    submit only one time.
                                                                                                             online instructions for sending your                     We will file in the docket all
                                                    1601 Lind Avenue SW., Renton, WA. For                    comments electronically.
                                                    information on the availability of this                                                                        comments that we receive, as well as a
                                                    material at the FAA, call 425–227–1221.
                                                                                                               • Fax: 202–493–2251.                                report summarizing each substantive
                                                                                                               • Mail: Send comments to the U.S.                   public contact with FAA personnel
                                                      Issued in Renton, Washington, on July 14,              Department of Transportation, Docket
                                                    2015.                                                                                                          concerning this proposed rulemaking.
                                                                                                             Operations, M–30, West Building                       Before acting on this proposal, we will
                                                    Suzanne Masterson,
                                                                                                             Ground Floor, Room W12–140, 1200                      consider all comments we receive on or
                                                    Acting Manager, Transport Airplane                       New Jersey Avenue SE., Washington,
                                                    Directorate, Aircraft Certification Service.                                                                   before the closing date for comments.
                                                                                                             DC 20590–0001.                                        We will consider comments filed after
                                                    [FR Doc. 2015–17955 Filed 7–22–15; 8:45 am]
                                                                                                               • Hand Delivery: Deliver to the                     the comment period has closed if it is
                                                    BILLING CODE 4910–13–P
                                                                                                             ‘‘Mail’’ address between 9 a.m. and 5                 possible to do so without incurring
                                                                                                             p.m., Monday through Friday, except                   expense or delay. We may change this
                                                                                                             Federal holidays.                                     proposal in light of the comments we
                                                    DEPARTMENT OF TRANSPORTATION
                                                                                                             Examining the AD Docket                               receive.
                                                    Federal Aviation Administration                                                                                Discussion
                                                                                                               You may examine the AD docket on
                                                    14 CFR Part 39                                           the Internet at http://                                 On May 21, 2014, we issued AD
                                                                                                             www.regulations.gov or in person at the               2014–07–52, Amendment 39–17858, 79
                                                    [Docket No. FAA–2015–2568; Directorate                   Docket Operations Office between 9                    FR 33054, June 10, 2014) for Airbus
                                                    Identifier 2014–SW–026–AD]                               a.m. and 5 p.m., Monday through                       Helicopters Model AS350B, AS350BA,
                                                    RIN 2120–AA64                                            Friday, except Federal holidays. The AD               AS350B1, AS350B2, AS350B3, AS350C,
                                                                                                             docket contains this proposed AD, the                 AS350D, AS350D1, AS355E, AS355F,
mstockstill on DSK4VPTVN1PROD with PROPOSALS




                                                    Airworthiness Directives; Airbus                         European Aviation Safety Agency                       AS355F1, AS355F2, AS355N, and
                                                    Helicopters (Previously Eurocopter                       (EASA) AD, the economic evaluation,                   AS355NP helicopters with Modification
                                                    France) Helicopters                                      any comments received and other                       (MOD) 07 3215 installed or with a
                                                    AGENCY: Federal Aviation                                 information. The street address for the               reinforcement angle, part-number (P/N)
                                                    Administration (FAA), DOT.                               Docket Operations Office (telephone                   350A08.2493.21 or 350A08.2493.23,
                                                                                                             800–647–5527) is in the ADDRESSES                     installed. AD 2014–07–52 requires, for
                                                    ACTION: Notice of proposed rulemaking
                                                                                                             section. Comments will be available in                helicopters with 640 or more hours TIS,
                                                    (NPRM).
                                                                                                             the AD docket shortly after receipt.                  within 10 hours TIS and thereafter at


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                                                    43646                    Federal Register / Vol. 80, No. 141 / Thursday, July 23, 2015 / Proposed Rules

                                                    intervals not exceeding 10 hours TIS,                    applicability to no longer include                    05.00.70 for Model AS350B, BA, BB, Bl,
                                                    repetitively inspecting each                             helicopters with MOD 07 3215 and to                   B2, B3, and D helicopters and EASB No.
                                                    reinforcement angle for a crack. If there                include a note clarifying that the AD                 05.00.62 for Model AS355E, F, F1, F2,
                                                    is a crack, AD 2014–07–52 requires,                      would not apply if MOD 07 3232 is                     N, and NP helicopters, both Revision 0
                                                    before further flight, repairing the                     installed.                                            and dated March 24, 2014. EASB No.
                                                    reinforcement angle. As an optional                                                                            05.00.70 and EASB No. 05.00.62
                                                    terminating action for the repetitive 10                 Comments
                                                                                                                                                                   describe procedures for inspecting the
                                                    hour TIS inspections, AD 2014–07–52                        After AD 2014–07–52 (79 FR 33054,                   angle reinforcements for a crack. This
                                                    allows a repetitive 165 hour TIS                         June 10, 2014), was published, we                     service information is reasonably
                                                    inspection of the reinforcement angle                    received comments from three                          available because the interested parties
                                                    under each attaching screw for a crack.                  commenters.                                           have access to it through their normal
                                                       AD 2014–07–52 was prompted by                                                                               course of business or by the means
                                                                                                             Request
                                                    Emergency AD No. 2014–0076–E, dated                                                                            identified in the ADDRESSES section of
                                                    March 25, 2014, issued by EASA, which                       Two commenters requested that the                  this NPRM.
                                                    is the Technical Agent for the Member                    AD not be applicable to aircraft with
                                                    States of the European Union, to correct                 MOD 07 3232 installed, as this                        Proposed AD Requirements
                                                    an unsafe condition for Airbus                           modification improved the attachment                     This proposed AD would retain the 10
                                                    Helicopters Model AS350B, AS350BA,                       at the junction frame to prevent                      hour TIS repetitive inspection of the
                                                    AS350BB, AS350B1, AS350B2,                               cracking.                                             junction frame required by AD 2014–
                                                    AS350B3, AS350D, AS355E, AS355F,                            We partially agree. Although AD                    07–52 (79 FR 33054, June 10, 2014), and
                                                    AS355F1, AS355F2, AS355N, and                            2014–07–52 does not apply to                          would also require the repetitive 165
                                                    AS355NP helicopters with MOD 07                          helicopters with MOD 07 3232 installed,               hour TIS inspection of the junction
                                                    3215 or with at least one reinforcement                  we have revised the language in the                   frame bores as a terminating action for
                                                    angle, P/N 350A08.2493.21 or P/N                         proposed AD so that this exclusion is                 the 10 hour TIS inspection. This
                                                    350A08.2493.23, installed. EASA                          more clear.                                           proposed AD would also revise the
                                                    advises that during the inspection of                       Two commenters requested that we                   applicability paragraph by no longer
                                                    several AS355 helicopters, cracks found                  increase the time between inspections                 including helicopters with MOD 07
                                                    in the reinforcement angles had                          or allow the repetitive inspections to                3215.
                                                    initiated on the non-visible surface of                  end if no cracks are found after a few
                                                    the angle, and that this condition, if not               inspections. The commenters stated that               Differences Between This Proposed AD
                                                    corrected, could lead to further crack                   the inspection frequency of the                       and the EASA AD
                                                    propagation and subsequent loss of the                   repetitive 165-hour TIS inspection is                    This proposed AD is not applicable to
                                                    tailboom, resulting in loss of control of                excessive and that if correctly installed,            the AS350BB as that model is not type
                                                    the helicopter. The EASA AD requires                     the doublers do not crack. One                        certificated in the U.S. This proposed
                                                    repetitive inspections of the                            commenter stated that in practice the                 AD applies to Airbus Helicopters Model
                                                    reinforcement angles, and states that a                  165-hour inspection is being completed                AS350C and AS350D1 helicopters
                                                    terminating action is under                              at every 100-hour inspection to avoid                 because these helicopters have a similar
                                                    investigation.                                           repeated grounding of the aircraft.                   design. Finally, the EASA AD requires
                                                                                                             Another commenter stated that frequent                operators to contact Airbus Helicopters
                                                    Actions Since AD 2014–07–52 Was
                                                                                                             removal of the bolts and nuts could                   if there is a crack, and this proposed AD
                                                    Issued
                                                                                                             affect the airworthiness of the aircraft.             does not, however it does require
                                                       Since we issued AD 2014–07–52 (79                        We do not agree. Analysis has                      repairing the crack before further flight.
                                                    FR 33054, June 10, 2014), we have                        demonstrated that cracking has been
                                                    determined that the optional                             found in more than one location, which                Interim Action
                                                    terminating action in AD 2014–07–52                      indicates there may be more than one                    We consider this proposed AD to be
                                                    should be a required terminating action.                 cause of the cracking. The uncertainty                an interim action. If final action is later
                                                    This NPRM would retain the actions in                    regarding the root cause of the cracking              identified, we might consider further
                                                    AD 2014–07–52 but would require the                      supports requiring the 165-hour TIS                   rulemaking then.
                                                    165-hour TIS visual inspection as                        inspections without any changes.
                                                    terminating action for the 10-hour TIS                                                                         Costs of Compliance
                                                    inspections. In addition, because MOD                    FAA’s Determination                                     We estimate that this proposed AD
                                                    07 3215 installed reinforcement angle P/                   These helicopters have been approved                would affect 822 helicopters of U.S.
                                                    Ns 350A08.2493.21 and                                    by the aviation authority of France and               Registry. We estimate that operators
                                                    350A08.2493.23, AD 2014–07–52 was                        are approved for operation in the United              may incur the following costs in order
                                                    written to apply to helicopters with                     States. Pursuant to our bilateral                     to comply with this proposed AD. At an
                                                    either the reinforcement angle P/Ns or                   agreement with France, EASA, its                      average labor rate of $85 per hour,
                                                    with MOD 07 3215, so that operators                      technical representative, has notified us             inspecting the reinforcement angles for
                                                    could more easily determine whether                      of the unsafe condition described in its              a crack without removing the screws
                                                    AD 2014–07–52 applied to their aircraft.                 AD. We are proposing this AD because                  would require 1.0 work-hour, for a cost
                                                    Airbus Helicopters then developed                        we evaluated all known relevant                       per helicopter of $85 and a total cost of
                                                    MOD 07 3232, which removes                                                                                     $69,870 for the U.S. fleet per inspection
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                                                                                                             information and determined that an
                                                    reinforcement angle P/N                                  unsafe condition is likely to exist or                cycle. Removing the screws and
                                                    350A08.2493.21 and P/N                                   develop on other products of the same                 inspecting the reinforcement angle
                                                    350A08.2493.23. Because a helicopter                     type design.                                          would require 2 work-hours, for a cost
                                                    with both MOD 07 3215 and MOD 07                                                                               per helicopter of $170 and a total cost
                                                    3232 in its aircraft records would not                   Related Service Information Under 1                   of $139,740 for the U.S. fleet, per
                                                    have reinforcement angle P/N                             CFR Part 51                                           inspection cycle. If required, repairing a
                                                    350A08.2493.21 or P/N 350A08.2493.23                       Airbus Helicopters issued Emergency                 cracked reinforcement angle would
                                                    installed, this NPRM would revise the                    Alert Service Bulletin (EASB) No.                     require about 10 work-hours, and


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                                                                             Federal Register / Vol. 80, No. 141 / Thursday, July 23, 2015 / Proposed Rules                                                 43647

                                                    required parts would cost about $300,                    PART 39—AIRWORTHINESS                                  approved by the manager listed in paragraph
                                                    for a total cost per helicopter of $1,150.               DIRECTIVES                                             (h)(1) of this AD.
                                                                                                                                                                       (3) Within 165 hours TIS after the first
                                                    Authority for This Rulemaking                            ■ 1. The authority citation for part 39                inspection required by paragraph (f)(1) of this
                                                       Title 49 of the United States Code                    continues to read as follows:                          AD, and thereafter at intervals not exceeding
                                                    specifies the FAA’s authority to issue                        Authority: 49 U.S.C. 106(g), 40113, 44701.        165 hours TIS, remove screw No. 5 from the
                                                    rules on aviation safety. Subtitle I,                                                                           reinforcement angle, thoroughly clean the
                                                    section 106, describes the authority of                  § 39.13    [Amended]                                   area around the hole and inspect the
                                                    the FAA Administrator. ‘‘Subtitle VII:                   ■ 2. The FAA amends § 39.13 by                         reinforcement angle for a crack. If there is not
                                                    Aviation Programs,’’ describes in more                   removing Airworthiness Directive (AD)                  a crack, reinstall the screw. Sequentially
                                                    detail the scope of the Agency’s                         2014–07052, Amendment 39–17858 (79                     repeat the steps required by this paragraph
                                                    authority.                                               FR 33054, June 10, 2014), and adding                   for screws No. 6 through No. 12. If there is
                                                       We are issuing this rulemaking under                  the following new AD:                                  a crack, comply with paragraph (f)(2) of this
                                                    the authority described in ‘‘Subtitle VII,                                                                      AD. Accomplishment of the inspection
                                                                                                             Airbus Helicopters (previously Eurocopter
                                                    Part A, Subpart III, Section 44701:                          France): Docket No. FAA–2015–2568;                 required by this paragraph terminates the
                                                    General requirements.’’ Under that                           Directorate Identifier 2014–SW–026–AD.             repetitive inspections required by paragraph
                                                    section, Congress charges the FAA with                                                                          (f)(1) of this AD.
                                                                                                             (a) Applicability
                                                    promoting safe flight of civil aircraft in                                                                      (g) Special Flight Permit
                                                                                                               This AD applies to Airbus Helicopters
                                                    air commerce by prescribing regulations
                                                                                                             Model AS350B, AS350BA, AS350B1,                          Special flight permits are prohibited.
                                                    for practices, methods, and procedures                   AS350B2, AS350B3, AS350C, AS350D,
                                                    the Administrator finds necessary for                    AS350D1, AS355E, AS355F, AS355F1,                      (h) Alternative Methods of Compliance
                                                    safety in air commerce. This regulation                  AS355F2, AS355N, and AS355NP                           (AMOCs)
                                                    is within the scope of that authority                    helicopters, with a reinforcement angle part              (1) The Manager, Safety Management
                                                    because it addresses an unsafe condition                 number (P/N) 350A08.2493.21 or P/N                     Group, FAA, may approve AMOCs for this
                                                    that is likely to exist or develop on                    350A08.2493.23 installed, certificated in any          AD. Send your proposal to: Robert Grant,
                                                    products identified in this rulemaking                   category.
                                                                                                                                                                    Aviation Safety Engineer, Safety Management
                                                    action.                                                    Note 1 to paragraph (a) of this AD:                  Group, FAA, 10101 Hillwood Pkwy., Fort
                                                                                                             Helicopters with Modification (MOD) 073232
                                                    Regulatory Findings                                                                                             Worth, TX 76177; telephone (817) 222–5110;
                                                                                                             do not have P/N 350A08.2493.21 or P/N
                                                                                                             350A08.2493.23 installed.                              email robert.grant@faa.gov.
                                                      We determined that this proposed AD                                                                              (2) For operations conducted under a 14
                                                    would not have federalism implications                   (b) Unsafe Condition                                   CFR part 119 operating certificate or under
                                                    under Executive Order 13132. This                           This AD defines the unsafe condition as a           14 CFR part 91, subpart K, we suggest that
                                                    proposed AD would not have a                             crack in a rear structure to tailboom junction         you notify your principal inspector, or
                                                    substantial direct effect on the States, on              frame reinforcement angle (reinforcement               lacking a principal inspector, the manager of
                                                    the relationship between the national                    angle), which if not detected could result in          the local flight standards district office or
                                                    Government and the States, or on the                     loss of the tail boom and subsequent loss of           certificate holding district office before
                                                    distribution of power and                                control of the helicopter.                             operating any aircraft complying with this
                                                    responsibilities among the various                       (c) Affected ADs                                       AD through an AMOC.
                                                    levels of government.                                       This AD supersedes AD 2014–07–52,                      (3) AMOCs approved previously in
                                                      For the reasons discussed, I certify                   Amendment 39–17858 (79 FR 33054, June                  accordance with AD 2014–07–52,
                                                    this proposed regulation:                                10, 2014).                                             Amendment 39–17858 (79 FR 33054, June
                                                      1. Is not a ‘‘significant regulatory                                                                          10, 2014) are approved as AMOCs for the
                                                    action’’ under Executive Order 12866;                    (d) Comments Due Date                                  corresponding requirements of paragraph
                                                      2. Is not a ‘‘significant rule’’ under the               We must receive comments by September                (f)(2) of this AD.
                                                    DOT Regulatory Policies and Procedures                   21, 2015.
                                                                                                                                                                    (i) Additional Information
                                                    (44 FR 11034, February 26, 1979);                        (e) Compliance
                                                      3. Will not affect intrastate aviation in                                                                       The subject of this AD is addressed in
                                                                                                                You are responsible for performing each
                                                    Alaska to the extent that it justifies                                                                          European Aviation Safety Agency (EASA) AD
                                                                                                             action required by this AD within the
                                                    making a regulatory distinction; and                     specified compliance time unless it has                2014–0076–E, dated March 25, 2014. You
                                                      4. Will not have a significant                         already been accomplished prior to that time.          may view the EASA AD on the Internet at
                                                    economic impact, positive or negative,                                                                          http://www.regulations.gov in Docket No.
                                                                                                             (f) Required Actions                                   FAA–2015–2568.
                                                    on a substantial number of small entities
                                                    under the criteria of the Regulatory                        (1) For helicopters with 640 or more hours
                                                                                                             time-in-service (TIS) since installation of            (j) Subject
                                                    Flexibility Act.
                                                                                                             MOD 07 3215 or since installation of an                  Joint Aircraft Service Component (JASC)
                                                      We prepared an economic evaluation                     applicable reinforcement angle, within 10              Code: 5302: Rotorcraft Tailboom.
                                                    of the estimated costs to comply with                    hours TIS, and thereafter at intervals not
                                                    this proposed AD and placed it in the                    exceeding 10 hours TIS, inspect each                     Issued in Fort Worth, Texas, on July 15,
                                                    AD docket.                                               reinforcement angle for a crack as depicted            2015.
                                                                                                             in Figure 1 of Airbus Helicopters Emergency            Bruce E. Cain,
                                                    List of Subjects in 14 CFR Part 39                       Alert Service Bulletin No. 05.00.70 for Model
                                                                                                                                                                    Acting Directorate Manager, Rotorcraft
                                                                                                             AS350B, AS350BA, AS350B1, AS350B2,
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                                                      Air transportation, Aircraft, Aviation                                                                        Directorate, Aircraft Certification Service.
                                                    safety, Incorporation by reference,                      AS350B3, AS350C, AS350D, and AS350D1
                                                                                                             helicopters and Airbus Helicopters                     [FR Doc. 2015–17952 Filed 7–22–15; 8:45 am]
                                                    Safety.
                                                                                                             Emergency Alert Service Bulletin No.                   BILLING CODE 4910–13–P
                                                    The Proposed Amendment                                   05.00.62 for AS355E, AS355F, AS355F1,
                                                                                                             AS355F2, AS355N, and AS355NP
                                                      Accordingly, under the authority                       helicopters, both Revision 0 and dated March
                                                    delegated to me by the Administrator,                    24, 2014.
                                                    the FAA proposes to amend 14 CFR part                       (2) If there is a crack, before further flight,
                                                    39 as follows:                                           repair the reinforcement angle in a manner



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Document Created: 2015-12-15 12:53:40
Document Modified: 2015-12-15 12:53:40
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionNotice of proposed rulemaking (NPRM).
DatesWe must receive comments on this proposed AD by September 21, 2015.
ContactRobert Grant, Aviation Safety Engineer, Safety Management Group, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222-5110; email [email protected]
FR Citation80 FR 43645 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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