82_FR_12348 82 FR 12308 - Airworthiness Directives; The Enstrom Helicopter Corporation

82 FR 12308 - Airworthiness Directives; The Enstrom Helicopter Corporation

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 82, Issue 40 (March 2, 2017)

Page Range12308-12310
FR Document2017-03950

We propose to supersede airworthiness directive (AD) 2015-08- 51 for Enstrom Helicopter Corporation (Enstrom) Model F-28A, 280, F- 28C, F-28C-2, F-28C-2R, 280C, F-28F, F-28F-R, 280F, 280FX, and 480 helicopters. AD 2015-08-51 requires an inspection of the main rotor spindle (spindle) and reporting the inspection results to the FAA. This proposed AD was prompted by additional reports of cracked spindles and would require establishing a life limit and a recurring inspection. These proposed actions are intended to prevent the unsafe condition on these products.

Federal Register, Volume 82 Issue 40 (Thursday, March 2, 2017) 
[Federal Register Volume 82, Number 40 (Thursday, March 2, 2017)]
[Proposed Rules]
[Pages 12308-12310]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-03950]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0141; Directorate Identifier 2016-SW-067-AD]
RIN 2120-AA64


Airworthiness Directives; The Enstrom Helicopter Corporation

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to supersede airworthiness directive (AD) 2015-08-
51 for Enstrom Helicopter Corporation (Enstrom) Model F-28A, 280, F-
28C, F-28C-2, F-28C-2R, 280C, F-28F, F-28F-R, 280F, 280FX, and 480 
helicopters. AD 2015-08-51 requires an inspection of the main rotor 
spindle (spindle) and reporting the inspection results to the FAA. This 
proposed AD was prompted by additional reports of cracked spindles and 
would require establishing a life limit and a recurring inspection. 
These proposed actions are intended to prevent the unsafe condition on 
these products.

DATES: We must receive comments on this proposed AD by May 1, 2017.

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 by searching for and locating Docket No. FAA-2017-
0141; 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 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 rule, contact 
Enstrom Helicopter Corporation, 2209 22nd Street, Menominee, MI; 
telephone (906) 863-1200; fax (906) 863-6821; or at 
www.enstromhelicopter.com. 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: Monica Nemecek, Continued Operational 
Safety Program Manager, Chicago Aircraft Certification Office, Small 
Airplane Directorate, FAA, 2300 East Devon Ave., Des Plaines, IL 60018; 
(847) 294-7618; 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 8, 2015, we issued AD 2015-08-51, Amendment 39-18160 (80 FR 
28172, May 18, 2015), which was sent previously as an emergency AD to 
all known U.S. owners and operators of Enstrom Model F-28A, 280, F-28C, 
F-28C-2, F-28C-2R, 280C, F-28F, F-28F-R, 280F, 280FX, and 480 
helicopters. AD 2015-08-51 applies to helicopters with a spindle part 
number (P/N) 28-14282-11 or 28-14282-13 installed and requires 
conducting a one-time magnetic particle inspection (MPI) of the spindle 
for cracks and reporting the inspection results to the FAA. AD 2015-08-
51 was prompted by a fatal accident and reports of spindles with 
cracks. The actions of AD 2015-08-51 are intended to detect a crack in 
a spindle and prevent loss of a main rotor blade and subsequent loss of 
control of the helicopter.

Actions Since AD 2015-08-51 Was Issued

    Since we issued AD 2015-08-51, we received additional reports of 
cracked spindles. Additionally, Enstrom revised its service information 
to reduce the time for the initial MPI from 3,500 hours TIS to 1,500 
hours TIS and extend the compliance time for a recurring MPI of the 
spindles from 300 hours TIS to 500 hours TIS. Based on a review of the 
in-service data and a fatigue analysis, the FAA determined a life limit 
and repetitive MPIs were necessary to reduce the risk of a crack 
developing in a spindle. We also determined the reporting requirement 
in AD 2015-08-51 is no longer necessary.
    We issued AD 2015-08-51 as interim action; this proposed AD would 
provide long-term requirements to prevent a spindle failure. 
Accordingly, this

[[Page 12309]]

proposed AD would require an MPI of the spindle every 500 hours TIS 
until the spindle reaches its new life limit of 1,500 hours TIS. These 
proposed actions are intended to detect a crack in a spindle and 
prevent loss of a main rotor blade and subsequent loss of control of 
the helicopter.

FAA's Determination

    We are proposing this AD because we evaluated all the relevant 
information and determined the unsafe condition described previously is 
likely to exist or develop in other products of these same type 
designs.

Related Service Information

    We reviewed Enstrom Service Directive Bulletin No. 0119, Revision 
3, dated June 24, 2016, for Model F-28A, F-28C, F-28F, 280, 280C, 280F, 
and 280FX helicopters with a spindle P/N 28-14282-11 or 28-14282-13. We 
also reviewed Enstrom Service Directive Bulletin No. T-050, Revision 3, 
dated June 24, 2016, for Model 480 helicopters, serial numbers 5001 
through 5004 and 5006, and with a spindle P/N 28-14282-13, except those 
aircraft modified with tension-torsion straps. Both service directive 
bulletins specify sending the spindle to Enstrom for an MPI before the 
spindle reaches 1,500 hours time-in-service (TIS), or within 5 hours 
TIS for those spindles with 1,500 or more hours TIS. Thereafter, the 
service directive bulletins specify returning the spindle to Enstrom 
for an MPI every 500 hours.

Proposed AD Requirements

    This proposed AD would require establishing a life limit of 1,500 
hours TIS for spindle P/Ns 28-14282-11 and 28-14282-13. This proposed 
AD would also require an initial and recurring MPI of the spindles.

Differences Between This Proposed AD and the Service Information

    This proposed AD would require establishing a spindle life limit of 
1,500 hours TIS. The service information does not specify a life limit.
    This proposed AD would require that the MPI be conducted by a Level 
II or Level III inspector or equivalent. The service information 
specifies sending the spindle to Enstrom for an MPI.
    This proposed AD would require an initial MPI before further flight 
for a spindle with 500 or more hours TIS, unless an MPI has been done 
within the last 500 hours TIS. The service information specifies an 
initial MPI compliance time of within 5 hours TIS for a spindle with 
1,500 or more hours TIS.

Costs of Compliance

    We estimate that this proposed AD would affect 323 helicopters of 
U.S. Registry. We estimate that operators may incur the following costs 
in order to comply with this AD. Labor costs are estimated at $85 per 
work-hour. Inspecting the spindles would take about 15 work-hours for 
an estimated cost of $1,275 per helicopter and $411,825 for the U.S. 
fleet per inspection cycle. Replacing a cracked spindle would cost 
$8,164 for parts and no additional work-hours. Replacing a set of three 
spindles that have reached their life limit would take about 14 work-
hours and parts would cost $17,500 for a total cost of $18,690 per 
helicopter.

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) 
2015-08-51, Amendment 39-18160 (80 FR 28172, May 18, 2015), and adding 
the following new AD:

The Enstrom Helicopter Corporation (Enstrom): Docket No. FAA-2017-
0141; Directorate Identifier 2016-SW-067-AD.

(a) Applicability

    This AD applies to Enstrom Model F-28A, 280, F-28C, F-28C-2, F-
28C-2R, 280C, F-28F, F-28F-R, 280F, and 280FX helicopters, all 
serial numbers; and Enstrom Model 480 helicopters, serial numbers 
5001 through 5006; with a main rotor spindle (spindle) part number 
(P/N) 28-14282-11 or 28-14282-13, installed, certificated in any 
category.

(b) Unsafe Condition

    This AD defines the unsafe condition as a crack in a spindle, 
which, if not detected, could result in loss of a main rotor blade 
and subsequent loss of control of the helicopter.

(c) Affected ADs

    This AD supersedes AD 2015-08-51, Amendment 39-18160 (80 FR 
28172, May 18, 2015).

(d) Comments Due Date

    We must receive comments by May 1, 2017.

(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) Before further flight, remove from service any spindle P/N 
28-14282-11 or 28-14282-13 that has 1,500 or more hours time-in-
service (TIS). If the hours TIS of a spindle is unknown, use the TIS 
of the helicopter.

[[Page 12310]]

Thereafter, remove from service any spindle P/N 28-14282-11 or 28-
14282-13 before accumulating 1,500 hours TIS.
    (2) For each spindle with 500 or more hours TIS, using the hours 
TIS of the helicopter if the hours TIS of the spindle is unknown:
    (i) Before further flight, unless already done within the last 
500 hours TIS, conduct a magnetic particle inspection (MPI) of the 
spindle for a crack, paying particular attention to the threaded 
portion of the spindle. The MPI of the spindle must be conducted by 
a Level II or Level III inspector qualified in the MPI in the 
Aeronautics Sector according to the EN4179 or NAS410 standard or 
equivalent. If there is a crack in the spindle, replace it with an 
airworthy spindle before further flight.
    (ii) Thereafter at intervals not to exceed 500 hours TIS, repeat 
the MPI specified in paragraph (f)(2)(i) of this AD.

(g) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Chicago Aircraft Certification Office, FAA, may 
approve AMOCs for this AD. Send your proposal to: Monica Nemecek, 
Continued Operational Safety Program Manager, Chicago Aircraft 
Certification Office, Small Airplane Directorate, FAA, 2300 East 
Devon Ave., Des Plaines, IL 60018; (847) 294-7618; 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 2015-08-51, 
Amendment 39-18160 (80 FR 28172, May 18, 2015), are approved as 
AMOCs for the corresponding requirements in paragraph (f) of this 
AD.

(h) Additional Information

    Enstrom Service Directive Bulletin Nos. 0119 and T-050, both 
Revision 3 and both dated June 24, 2016, which are not incorporated 
by reference, contain additional information about the subject of 
this AD. For service information identified in this AD, contact 
Enstrom Helicopter Corporation, 2209 22nd Street, Menominee, MI; 
telephone (906) 863-1200; fax (906) 863-6821; or at 
www.enstromhelicopter.com. You may review the service information at 
the FAA, Office of the Regional Counsel, Southwest Region, 10101 
Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177.

(i) Subject

    Joint Aircraft Service Component (JASC) Code: 6220, Main Rotor 
Head.


    Issued in Fort Worth, Texas, on February 16, 2017.
Lance T. Gant,
Manager, Rotorcraft Directorate, Aircraft Certification Service.
[FR Doc. 2017-03950 Filed 3-1-17; 8:45 am]
BILLING CODE 4910-13-P

12308 Federal Register / Vol. 82, No. 40 / Thursday, March 2, 2017 / Proposed Rules (2) Airworthy Product: For any requirement DATES: We must receive comments on proposal, explain the reason for any in this AD to obtain corrective actions from this proposed AD by May 1, 2017. recommended change, and include a manufacturer or other source, use these supporting data. To ensure the docket ADDRESSES: You may send comments by actions if they are FAA-approved. Corrective does not contain duplicate comments, actions are considered FAA-approved if they any of the following methods: are approved by the State of Design Authority • Federal eRulemaking Docket: Go to commenters should send only one copy (or their delegated agent). You are required http://www.regulations.gov. Follow the of written comments, or if comments are to assure the product is airworthy before it online instructions for sending your filed electronically, commenters should is returned to service. comments electronically. submit only one time. (h) Related Information • Fax: 202–493–2251. We will file in the docket all • Mail: Send comments to the U.S. comments that we receive, as well as a Refer to MCAI European Aviation Safety Department of Transportation, Docket report summarizing each substantive Agency (EASA) AD No.: 2017–0005, dated public contact with FAA personnel Operations, M–30, West Building January 10, 2017, for related information. concerning this proposed rulemaking. You may examine the MCAI on the Internet Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, Before acting on this proposal, we will at http://www.regulations.gov by searching for and locating Docket No. FAA–2017–0156. DC 20590–0001. consider all comments we receive on or For service information related to this AD, • Hand Delivery: Deliver to the before the closing date for comments. contact ZLIN AIRCRAFT a.s., Letiště 1887, ‘‘Mail’’ address between 9 a.m. and 5 We will consider comments filed after 765 02 Otrokovice, Czech Republic, p.m., Monday through Friday, except the comment period has closed if it is telephone: +420 725 266 711; fax: +420 226 Federal holidays. possible to do so without incurring 013 830; email: info@zlinaircraft.eu, Internet: expense or delay. We may change this http://www.zlinaircraft.eu. You may review Examining the AD Docket proposal in light of the comments we copies of the referenced service information You may examine the AD docket on receive. at the FAA, Small Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. For the Internet at http:// Discussion information on the availability of this www.regulations.gov by searching for and locating Docket No. FAA–2017– On May 8, 2015, we issued AD 2015– material at the FAA, call (816) 329–4148. 0141; or in person at the Docket 08–51, Amendment 39–18160 (80 FR Issued in Kansas City, Missouri, on 28172, May 18, 2015), which was sent February 17, 2017. Operations Office between 9 a.m. and 5 p.m., Monday through Friday, except previously as an emergency AD to all Pat Mullen, known U.S. owners and operators of Federal holidays. The AD docket Acting Manager, Small Airplane Directorate, contains this proposed AD, the Enstrom Model F–28A, 280, F–28C, F– Aircraft Certification Service. 28C–2, F–28C–2R, 280C, F–28F, F–28F– economic evaluation, any comments [FR Doc. 2017–03965 Filed 3–1–17; 8:45 am] received and other information. The R, 280F, 280FX, and 480 helicopters. BILLING CODE 4910–13–P street address for the Docket Operations AD 2015–08–51 applies to helicopters Office (telephone 800–647–5527) is in with a spindle part number (P/N) 28– the ADDRESSES section. Comments will 14282–11 or 28–14282–13 installed and DEPARTMENT OF TRANSPORTATION be available in the AD docket shortly requires conducting a one-time after receipt. magnetic particle inspection (MPI) of Federal Aviation Administration the spindle for cracks and reporting the For service information identified in this proposed rule, contact Enstrom inspection results to the FAA. AD 2015– 14 CFR Part 39 08–51 was prompted by a fatal accident Helicopter Corporation, 2209 22nd Street, Menominee, MI; telephone (906) and reports of spindles with cracks. The [Docket No. FAA–2017–0141; Directorate actions of AD 2015–08–51 are intended Identifier 2016–SW–067–AD] 863–1200; fax (906) 863–6821; or at www.enstromhelicopter.com. You may to detect a crack in a spindle and RIN 2120–AA64 review service information at the FAA, prevent loss of a main rotor blade and Office of the Regional Counsel, subsequent loss of control of the Airworthiness Directives; The Enstrom Southwest Region, 10101 Hillwood helicopter. Helicopter Corporation Pkwy., Room 6N–321, Fort Worth, TX Actions Since AD 2015–08–51 Was 76177. Issued AGENCY: Federal Aviation Administration (FAA), DOT. FOR FURTHER INFORMATION CONTACT: Since we issued AD 2015–08–51, we ACTION: Notice of proposed rulemaking Monica Nemecek, Continued received additional reports of cracked (NPRM). Operational Safety Program Manager, spindles. Additionally, Enstrom revised Chicago Aircraft Certification Office, its service information to reduce the SUMMARY: We propose to supersede Small Airplane Directorate, FAA, 2300 time for the initial MPI from 3,500 hours airworthiness directive (AD) 2015–08– East Devon Ave., Des Plaines, IL 60018; TIS to 1,500 hours TIS and extend the 51 for Enstrom Helicopter Corporation (847) 294–7618; email 9-AGL-CHI-ACO- compliance time for a recurring MPI of (Enstrom) Model F–28A, 280, F–28C, F– COS@faa.gov. the spindles from 300 hours TIS to 500 28C–2, F–28C–2R, 280C, F–28F, F–28F– SUPPLEMENTARY INFORMATION: hours TIS. Based on a review of the in- R, 280F, 280FX, and 480 helicopters. service data and a fatigue analysis, the AD 2015–08–51 requires an inspection Comments Invited FAA determined a life limit and pmangrum on DSK3GDR082PROD with PROPOSALS of the main rotor spindle (spindle) and We invite you to participate in this repetitive MPIs were necessary to reporting the inspection results to the rulemaking by submitting written reduce the risk of a crack developing in FAA. This proposed AD was prompted comments, data, or views. We also a spindle. We also determined the by additional reports of cracked invite comments relating to the reporting requirement in AD 2015–08– spindles and would require establishing economic, environmental, energy, or 51 is no longer necessary. a life limit and a recurring inspection. federalism impacts that might result We issued AD 2015–08–51 as interim These proposed actions are intended to from adopting the proposals in this action; this proposed AD would provide prevent the unsafe condition on these document. The most helpful comments long-term requirements to prevent a products. reference a specific portion of the spindle failure. Accordingly, this VerDate Sep<11>2014 13:51 Mar 01, 2017 Jkt 241001 PO 00000 Frm 00008 Fmt 4702 Sfmt 4702 E:\FR\FM\02MRP1.SGM 02MRP1

Federal Register / Vol. 82, No. 40 / Thursday, March 2, 2017 / Proposed Rules 12309 proposed AD would require an MPI of Costs of Compliance on a substantial number of small entities the spindle every 500 hours TIS until We estimate that this proposed AD under the criteria of the Regulatory the spindle reaches its new life limit of would affect 323 helicopters of U.S. Flexibility Act. 1,500 hours TIS. These proposed actions Registry. We estimate that operators We prepared an economic evaluation are intended to detect a crack in a may incur the following costs in order of the estimated costs to comply with spindle and prevent loss of a main rotor to comply with this AD. Labor costs are this proposed AD and placed it in the blade and subsequent loss of control of estimated at $85 per work-hour. AD docket. the helicopter. Inspecting the spindles would take List of Subjects in 14 CFR Part 39 FAA’s Determination about 15 work-hours for an estimated Air transportation, Aircraft, Aviation We are proposing this AD because we cost of $1,275 per helicopter and safety, Incorporation by reference, evaluated all the relevant information $411,825 for the U.S. fleet per Safety. and determined the unsafe condition inspection cycle. Replacing a cracked described previously is likely to exist or spindle would cost $8,164 for parts and The Proposed Amendment develop in other products of these same no additional work-hours. Replacing a Accordingly, under the authority type designs. set of three spindles that have reached delegated to me by the Administrator, their life limit would take about 14 the FAA proposes to amend 14 CFR part Related Service Information work-hours and parts would cost 39 as follows: We reviewed Enstrom Service $17,500 for a total cost of $18,690 per Directive Bulletin No. 0119, Revision 3, helicopter. PART 39—AIRWORTHINESS dated June 24, 2016, for Model F–28A, Authority for This Rulemaking DIRECTIVES F–28C, F–28F, 280, 280C, 280F, and 280FX helicopters with a spindle P/N Title 49 of the United States Code ■ 1. The authority citation for part 39 28–14282–11 or 28–14282–13. We also specifies the FAA’s authority to issue continues to read as follows: reviewed Enstrom Service Directive rules on aviation safety. Subtitle I, Authority: 49 U.S.C. 106(g), 40113, 44701. Bulletin No. T–050, Revision 3, dated section 106, describes the authority of June 24, 2016, for Model 480 the FAA Administrator. ‘‘Subtitle VII: § 39.13 [Amended] helicopters, serial numbers 5001 Aviation Programs,’’ describes in more ■ 2. The FAA amends § 39.13 by through 5004 and 5006, and with a detail the scope of the Agency’s removing Airworthiness Directive (AD) spindle P/N 28–14282–13, except those authority. 2015–08–51, Amendment 39–18160 (80 aircraft modified with tension-torsion We are issuing this rulemaking under FR 28172, May 18, 2015), and adding straps. Both service directive bulletins the authority described in ‘‘Subtitle VII, the following new AD: specify sending the spindle to Enstrom Part A, Subpart III, Section 44701: The Enstrom Helicopter Corporation for an MPI before the spindle reaches General requirements.’’ Under that (Enstrom): Docket No. FAA–2017–0141; 1,500 hours time-in-service (TIS), or section, Congress charges the FAA with Directorate Identifier 2016–SW–067–AD. within 5 hours TIS for those spindles promoting safe flight of civil aircraft in air commerce by prescribing regulations (a) Applicability with 1,500 or more hours TIS. for practices, methods, and procedures This AD applies to Enstrom Model F–28A, Thereafter, the service directive 280, F–28C, F–28C–2, F–28C–2R, 280C, F– bulletins specify returning the spindle the Administrator finds necessary for safety in air commerce. This regulation 28F, F–28F–R, 280F, and 280FX helicopters, to Enstrom for an MPI every 500 hours. all serial numbers; and Enstrom Model 480 is within the scope of that authority Proposed AD Requirements helicopters, serial numbers 5001 through because it addresses an unsafe condition 5006; with a main rotor spindle (spindle) part This proposed AD would require that is likely to exist or develop on number (P/N) 28–14282–11 or 28–14282–13, establishing a life limit of 1,500 hours products identified in this rulemaking installed, certificated in any category. TIS for spindle P/Ns 28–14282–11 and action. (b) Unsafe Condition 28–14282–13. This proposed AD would Regulatory Findings also require an initial and recurring MPI This AD defines the unsafe condition as a We determined that this proposed AD crack in a spindle, which, if not detected, of the spindles. could result in loss of a main rotor blade and would not have federalism implications Differences Between This Proposed AD under Executive Order 13132. This subsequent loss of control of the helicopter. and the Service Information proposed AD would not have a (c) Affected ADs This proposed AD would require substantial direct effect on the States, on This AD supersedes AD 2015–08–51, establishing a spindle life limit of 1,500 the relationship between the national Amendment 39–18160 (80 FR 28172, May 18, hours TIS. The service information does Government and the States, or on the 2015). not specify a life limit. distribution of power and (d) Comments Due Date This proposed AD would require that responsibilities among the various levels of government. We must receive comments by May 1, the MPI be conducted by a Level II or 2017. Level III inspector or equivalent. The For the reasons discussed, I certify service information specifies sending this proposed regulation: (e) Compliance the spindle to Enstrom for an MPI. 1. Is not a ‘‘significant regulatory You are responsible for performing each This proposed AD would require an action’’ under Executive Order 12866; pmangrum on DSK3GDR082PROD with PROPOSALS action required by this AD within the initial MPI before further flight for a 2. Is not a ‘‘significant rule’’ under the specified compliance time unless it has spindle with 500 or more hours TIS, DOT Regulatory Policies and Procedures already been accomplished prior to that time. unless an MPI has been done within the (44 FR 11034, February 26, 1979); (f) Required Actions last 500 hours TIS. The service 3. Will not affect intrastate aviation in (1) Before further flight, remove from information specifies an initial MPI Alaska to the extent that it justifies service any spindle P/N 28–14282–11 or 28– compliance time of within 5 hours TIS making a regulatory distinction; and 14282–13 that has 1,500 or more hours time- for a spindle with 1,500 or more hours 4. Will not have a significant in-service (TIS). If the hours TIS of a spindle TIS. economic impact, positive or negative, is unknown, use the TIS of the helicopter. VerDate Sep<11>2014 13:51 Mar 01, 2017 Jkt 241001 PO 00000 Frm 00009 Fmt 4702 Sfmt 4702 E:\FR\FM\02MRP1.SGM 02MRP1

12310 Federal Register / Vol. 82, No. 40 / Thursday, March 2, 2017 / Proposed Rules Thereafter, remove from service any spindle Issued in Fort Worth, Texas, on February p.m., Monday through Friday, except P/N 28–14282–11 or 28–14282–13 before 16, 2017. Federal holidays. accumulating 1,500 hours TIS. Lance T. Gant, (2) For each spindle with 500 or more Examining the AD Docket Manager, Rotorcraft Directorate, Aircraft hours TIS, using the hours TIS of the Certification Service. You may examine the AD docket on helicopter if the hours TIS of the spindle is [FR Doc. 2017–03950 Filed 3–1–17; 8:45 am] the Internet at http:// unknown: BILLING CODE 4910–13–P www.regulations.gov by searching for (i) Before further flight, unless already and locating Docket No. FAA–2017– done within the last 500 hours TIS, conduct 0157; or in person at the Docket a magnetic particle inspection (MPI) of the DEPARTMENT OF TRANSPORTATION Management Facility between 9 a.m. spindle for a crack, paying particular and 5 p.m., Monday through Friday, attention to the threaded portion of the Federal Aviation Administration except Federal holidays. The AD docket spindle. The MPI of the spindle must be contains this proposed AD, the conducted by a Level II or Level III inspector 14 CFR Part 39 regulatory evaluation, any comments qualified in the MPI in the Aeronautics received, and other information. The [Docket No. FAA–2017–0157; Directorate Sector according to the EN4179 or NAS410 street address for the Docket Office Identifier 2016–CE–039–AD] standard or equivalent. If there is a crack in (phone: 800–647–5527) is in the the spindle, replace it with an airworthy RIN 2120–AA64 ADDRESSES section. Comments will be spindle before further flight. available in the AD docket shortly after (ii) Thereafter at intervals not to exceed Airworthiness Directives; Piper receipt. 500 hours TIS, repeat the MPI specified in Aircraft, Inc. Airplanes FOR FURTHER INFORMATION CONTACT: paragraph (f)(2)(i) of this AD. Scott Hopper, Aerospace Engineer, AGENCY: Federal Aviation (g) Alternative Methods of Compliance Administration (FAA), DOT. FAA, Atlanta Aircraft Certification (AMOCs) ACTION: Notice of proposed rulemaking Office, 1701 Columbia Avenue, College (NPRM). Park, Georgia 30337; phone: (404) 474– (1) The Manager, Chicago Aircraft 5535; fax: (404) 474–5606; email: Certification Office, FAA, may approve AMOCs for this AD. Send your proposal to: SUMMARY: We propose to supersede scott.hopper@faa.gov. Monica Nemecek, Continued Operational Airworthiness Directive (AD) 69–13–03, SUPPLEMENTARY INFORMATION: Safety Program Manager, Chicago Aircraft which applies to all Piper Aircraft, Inc. Comments Invited Certification Office, Small Airplane Models PA–23, PA–23–160, PA–23–235, Directorate, FAA, 2300 East Devon Ave., Des PA–23–250, PA–E23–250, and PA–30 We invite you to send any written Plaines, IL 60018; (847) 294–7618; email 9- airplanes. AD 69–13–03 currently relevant data, views, or arguments about AGL-CHI-ACO-COS@faa.gov. requires inspection of the heater exhaust this proposed AD. Send your comments (2) For operations conducted under a 14 extension, replacement of the extension to an address listed under the as necessary, and overhaul of the ADDRESSES section. Include ‘‘Docket No. CFR part 119 operating certificate or under 14 CFR part 91, subpart K, we suggest that combustion heater assembly. Since we FAA–2017–9157; Directorate Identifier you notify your principal inspector, or issued AD 69–13–03, we proposed an 2016–CE–039–AD’’ at the beginning of lacking a principal inspector, the manager of AD that applies to the Meggitt (Troy), your comments. We specifically invite the local flight standards district office or Inc. combustion heaters, and the comments on the overall regulatory, certificate holding district office before proposed combustion heater AD would economic, environmental, and energy operating any aircraft complying with this incorporate corrective actions for the aspects of this proposed AD. We will AD through an AMOC. heater that contradict the overhaul consider all comments received by the (3) AMOCs approved previously in requirement of AD 69–13–03. This closing date and may amend this accordance with AD 2015–08–51, proposed AD would retain the proposed AD because of those Amendment 39–18160 (80 FR 28172, May 18, inspection of the heater exhaust comments. 2015), are approved as AMOCs for the extension, with replacement of the We will post all comments we corresponding requirements in paragraph (f) extension as necessary, and remove the receive, without change, to http:// of this AD. overhaul requirement of the combustion www.regulations.gov, including any heater assembly. We are proposing this personal information you provide. We (h) Additional Information will also post a report summarizing each AD to correct the unsafe condition on Enstrom Service Directive Bulletin Nos. these products. substantive verbal contact we receive 0119 and T–050, both Revision 3 and both about this proposed AD. DATES: We must receive comments on dated June 24, 2016, which are not this proposed AD by April 17, 2017. Discussion incorporated by reference, contain additional information about the subject of this AD. For ADDRESSES: You may send comments, We issued AD 69–13–03, Amendment service information identified in this AD, using the procedures found in 14 CFR 39–1749 (38 FR 33765, December 7, contact Enstrom Helicopter Corporation, 11.43 and 11.45, by any of the following 1973) (‘‘AD 69–13–03’’), for certain 2209 22nd Street, Menominee, MI; telephone methods: Piper Aircraft, Inc. Models PA–23, PA– (906) 863–1200; fax (906) 863–6821; or at • Federal eRulemaking Portal: Go to 23–160, PA–23–235, PA–23–250, PA– www.enstromhelicopter.com. You may http://www.regulations.gov. Follow the E23–250, and PA–30 airplanes. AD 69– pmangrum on DSK3GDR082PROD with PROPOSALS review the service information at the FAA, instructions for submitting comments. 13–03 requires inspection of the heater Office of the Regional Counsel, Southwest • Fax: 202–493–2251. exhaust extension to determine if it is Region, 10101 Hillwood Pkwy., Room 6N– • Mail: U.S. Department of mild steel or stainless steel, repetitive 321, Fort Worth, TX 76177. Transportation, Docket Operations, M– inspections of the mild steel extensions 30, West Building Ground Floor, Room for deterioration, replacing the (i) Subject W12–140, 1200 New Jersey Avenue SE., extension as necessary, and overhaul of Joint Aircraft Service Component (JASC) Washington, DC 20590. the combustion heater assembly. AD Code: 6220, Main Rotor Head. • Hand Delivery: Deliver to Mail 69–13–03 resulted from the potential of address above between 9 a.m. and 5 carbon monoxide entering the airplane VerDate Sep<11>2014 13:51 Mar 01, 2017 Jkt 241001 PO 00000 Frm 00010 Fmt 4702 Sfmt 4702 E:\FR\FM\02MRP1.SGM 02MRP1


Document Created: 2017-03-02 00:09:19
Document Modified: 2017-03-02 00:09:19
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 May 1, 2017.
ContactMonica Nemecek, Continued Operational Safety Program Manager, Chicago Aircraft Certification Office, Small Airplane Directorate, FAA, 2300 East Devon Ave., Des Plaines, IL 60018; (847) 294-7618; email [email protected]
FR Citation82 FR 12308 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety
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