81_FR_71127 81 FR 70928 - Airworthiness Directives; Bell Helicopter Textron Helicopters

81 FR 70928 - Airworthiness Directives; Bell Helicopter Textron Helicopters

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 199 (October 14, 2016)

Page Range70928-70929
FR Document2016-24741

We are adopting a new airworthiness directive (AD) for certain Bell Helicopter Textron (Bell) Model 430 helicopters. This AD requires establishing a life limit for a certain main rotor hub attachment bolt (bolt) and removing from service each bolt that has met or exceeded its life limit. This AD was prompted by a documentation error that omitted the life limit of a certain part-numbered bolt from the Airworthiness Limitations section of the maintenance manual. The actions of this AD are intended to establish a life limit for a certain part-numbered bolt to prevent failure of a bolt, failure of a main rotor hub, and subsequent loss of control of a helicopter.

Federal Register, Volume 81 Issue 199 (Friday, October 14, 2016)
[Federal Register Volume 81, Number 199 (Friday, October 14, 2016)]
[Rules and Regulations]
[Pages 70928-70929]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-24741]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-6551; Directorate Identifier 2013-SW-070-AD; 
Amendment 39-18682; AD 2016-21-01]
RIN 2120-AA64


Airworthiness Directives; Bell Helicopter Textron Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
Bell Helicopter Textron (Bell) Model 430 helicopters. This AD requires 
establishing a life limit for a certain main rotor hub attachment bolt 
(bolt) and removing from service each bolt that has met or exceeded its 
life limit. This AD was prompted by a documentation error that omitted 
the life limit of a certain part-numbered bolt from the Airworthiness 
Limitations section of the maintenance manual. The actions of this AD 
are intended to establish a life limit for a certain part-numbered bolt 
to prevent failure of a bolt, failure of a main rotor hub, and 
subsequent loss of control of a helicopter.

DATES: This AD is effective November 18, 2016.

ADDRESSES: For service information identified in this final rule, 
contact Bell Helicopter Textron Canada Limited, 12,800 Rue de l'Avenir, 
Mirabel, Quebec J7J1R4; telephone (450) 437-2862 or (800) 363-8023; fax 
(450) 433-0272; or at http://www.bellcustomer.com/files/. You may 
review the referenced service information at the FAA, Office of the 
Regional Counsel, Southwest Region, 10101 Hillwood Pkwy, Room 6N-321, 
Fort Worth, TX 76177.

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-2016-
6551; 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 AD, the Transport Canada AD, the economic evaluation, any 
comments received, and other information. The street address for the 
Docket Operations Office (phone: 800-647-5527) is U.S. Department of 
Transportation, Docket Operations Office, M-30, West Building Ground 
Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590.

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

SUPPLEMENTARY INFORMATION: 

Discussion

    On May 10, 2016, at 81 FR 28766, the Federal Register published our 
notice of proposed rulemaking (NPRM), which proposed to amend 14 CFR 
part 39 by adding an AD that would apply to certain serial-numbered 
Bell Model 430 helicopters with bolt part number (P/N) MS21250-08083 
installed. The NPRM proposed to require, within 10 hours time-in-
service (TIS), revising the Airworthiness Limitations section of the 
applicable maintenance manual or Instructions for Continued 
Airworthiness (ICA) by establishing a life limit of 5,000 hours TIS for 
each bolt P/N MS21250-08083, determining the number of hours TIS for 
each bolt and using the helicopter's hours if the hours TIS of a bolt 
is unknown, and removing from service each bolt that has reached or 
exceeded its life limit. The proposed requirements were intended to 
establish a life limit for the bolt to prevent failure of a bolt, 
failure of a main rotor hub, and subsequent loss of control of a 
helicopter.
    Transport Canada, which is the aviation authority for Canada, has 
issued Canadian AD No. CF-2013-26, dated September 24, 2013, to correct 
an unsafe condition for certain serial-numbered Bell Model 430 
helicopters. Transport Canada advises that bolt P/N MS21250-08083, 
which replaced bolt P/N 20-065-08083 in 2009, has a retirement life of 
5,000 hours. However, the retirement life for the replacement bolt was 
inadvertently omitted from the limitations section of the Bell 430 
maintenance manual. Transport Canada advises that this situation, if 
not corrected, could result in failure of a bolt and loss of control of 
the helicopter. Transport Canada AD No. CF-2013-26 requires reviewing 
the helicopter records to determine if bolt P/N MS21250-08083 is 
installed, creating a historical service record, and establishing an 
airworthiness life of 5,000 hours air time.

Comments

    We gave the public the opportunity to participate in developing 
this AD, but we did not receive any comments on the NPRM (81 FR 28766, 
May 10, 2016).

FAA's Determination

    These helicopters have been approved by the aviation authority of 
Canada and are approved for operation in the United States. Pursuant to 
our bilateral agreement with Canada, Transport Canada, its technical 
representative, has notified us of the unsafe condition described in 
its AD. We are issuing this AD because we evaluated all information 
provided by Transport Canada and determined the unsafe condition exists 
and is likely to exist or develop on other helicopters of the same type 
design and that air safety and the public interest require adopting the 
AD requirements as proposed.

Differences Between This AD and the Transport Canada AD

    This AD requires compliance within 10 hours TIS, while the 
Transport Canada AD requires compliance within 60 days.

Related Service Information

    We reviewed Bell Helicopter Alert Service Bulletin 430-12-47, dated 
November 14, 2012 (ASB). The ASB states that original bolt P/N 20-065-
08083 has a retirement life of 5,000 hours but has been replaced by 
standard bolt P/N MS21250-08083, which does not have a life limit 
listed in the maintenance manual. The purpose of the ASB is to 
establish a life limit of 5,000 hours for the replacement bolt. Bell 
specifies reviewing the aircraft records back to January 2009 to 
determine which part-numbered bolts are installed. If a replacement 
bolt P/N MS21250-08083 is installed, the ASB specifies using data from 
aircraft records to create a historical service record for the 
replacement bolts and reflecting the 5,000 hours life limit. The ASB 
also specifies updating the Bell 430 maintenance manual.

[[Page 70929]]

Costs of Compliance

    We estimate that this AD affects 43 helicopters of U.S. Registry.
    We estimate that operators may incur the following costs to comply 
with this AD. At an average labor cost of $85 per work-hour, we 
estimate reviewing and revising the records requires 1 work-hour for a 
cost of about $85 per helicopter and $3,655 for the U.S. fleet. We 
estimate replacing a bolt that has exceeded its life limit requires 0.5 
work-hour plus $290 for a replacement bolt, for a total cost of $333 
per bolt.

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 helicopters identified in this 
rulemaking action.

Regulatory Findings

    This AD will not have federalism implications under Executive Order 
13132. This AD will 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 above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under 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 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.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 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 adding the following new airworthiness 
directive (AD):

2016-21-01 Bell Helicopter Textron: Amendment 39-18682; Docket No. 
FAA-2016-6551; Directorate Identifier 2013-SW-070-AD.

(a) Applicability

    This AD applies to Model 430 helicopters, serial number 49001 
through 49129, with a main rotor head attachment bolt (bolt) part 
number (P/N) MS21250-08083 installed, certificated in any category.

(b) Unsafe Condition

    This AD defines the unsafe condition as a bolt remaining in 
service beyond its fatigue life. This condition could result in 
failure of a bolt, failure of the main rotor hub and subsequent loss 
of control of a helicopter.

(c) Effective Date

    This AD becomes effective November 18, 2016.

(d) 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.

(e) Required Actions

    Within 10 hours time-in-service (TIS):
    (1) Revise the Airworthiness Limitations section of the 
applicable maintenance manual or Instructions for Continued 
Airworthiness (ICA) to establish a life limit of 5,000 hours TIS for 
each bolt P/N MS21250-08083.
    (2) Determine the number of hours TIS for each bolt and update 
the helicopter's historical records. If the hours TIS is unknown, 
calculate the number of hours TIS by counting the helicopter's hours 
TIS beginning January 1, 2009.
    (3) Remove from service each bolt that has reached or exceeded 
its life limit.

 (f) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Safety Management Group, FAA, may approve AMOCs 
for this AD. Send your proposal to: Matt Fuller, Senior Aviation 
Safety Engineer, Safety Management Group, Rotorcraft Directorate, 
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.

(g) Additional Information

    (1) Bell Helicopter Alert Service Bulletin 430-12-47, dated 
November 14, 2012, which is not incorporated by reference, contains 
additional information about the subject of this final rule. For 
service information identified in this final rule, contact Bell 
Helicopter Textron Canada Limited, 12,800 Rue de l'Avenir, Mirabel, 
Quebec J7J1R4; telephone (450) 437-2862 or (800) 363-8023; fax (450) 
433-0272; or at http://www.bellcustomer.com/files/. You may review a 
copy of the service information at the FAA, Office of the Regional 
Counsel, Southwest Region, 10101 Hillwood Pkwy, Room 6N-321, Fort 
Worth, TX 76177.
    (2) The subject of this AD is addressed in Transport Canada AD 
No. CF-2013-26, dated September 24, 2013. You may view the Transport 
Canada AD on the Internet at http://www.regulations.gov in Docket 
No. FAA-2016-6551.

(h) Subject

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

    Issued in Fort Worth, Texas, on October 3, 2016.
Lance T. Gant,
Manager, Rotorcraft Directorate, Aircraft Certification Service.
[FR Doc. 2016-24741 Filed 10-13-16; 8:45 am]
BILLING CODE 4910-13-P



                                           70928             Federal Register / Vol. 81, No. 199 / Friday, October 14, 2016 / Rules and Regulations

                                           information on the availability of this                 Examining the AD Docket                               maintenance manual. Transport Canada
                                           material at the FAA, call 781–238–7125.                                                                       advises that this situation, if not
                                              (5) You may view this service information              You may examine the AD docket on
                                                                                                   the Internet at http://                               corrected, could result in failure of a
                                           at the National Archives and Records
                                           Administration (NARA). For information on               www.regulations.gov by searching for                  bolt and loss of control of the helicopter.
                                           the availability of this material at NARA, call         and locating Docket No. FAA–2016–                     Transport Canada AD No. CF–2013–26
                                           202–741–6030, or go to: http://                         6551; or in person at the Docket                      requires reviewing the helicopter
                                           www.archives.gov/federal-register/cfr/ibr-              Operations Office between 9 a.m. and 5                records to determine if bolt P/N
                                           locations.html.                                         p.m., Monday through Friday, except                   MS21250–08083 is installed, creating a
                                             Issued in Burlington, Massachusetts, on               Federal holidays. The AD docket                       historical service record, and
                                           September 30, 2016.                                     contains this AD, the Transport Canada                establishing an airworthiness life of
                                           Colleen M. D’Alessandro,                                AD, the economic evaluation, any                      5,000 hours air time.
                                           Manager, Engine & Propeller Directorate,                comments received, and other
                                                                                                   information. The street address for the               Comments
                                           Aircraft Certification Service.
                                           [FR Doc. 2016–24795 Filed 10–13–16; 8:45 am]            Docket Operations Office (phone: 800–                   We gave the public the opportunity to
                                           BILLING CODE 4910–13–P
                                                                                                   647–5527) is U.S. Department of                       participate in developing this AD, but
                                                                                                   Transportation, Docket Operations                     we did not receive any comments on the
                                                                                                   Office, M–30, West Building Ground                    NPRM (81 FR 28766, May 10, 2016).
                                           DEPARTMENT OF TRANSPORTATION                            Floor, Room W12–140, 1200 New Jersey
                                                                                                   Avenue SE., Washington, DC 20590.                     FAA’s Determination
                                           Federal Aviation Administration                         FOR FURTHER INFORMATION CONTACT: Matt
                                                                                                   Fuller, Senior Aviation Safety Engineer,                These helicopters have been approved
                                           14 CFR Part 39                                          Safety Management Group, Rotorcraft                   by the aviation authority of Canada and
                                                                                                   Directorate, FAA, 10101 Hillwood                      are approved for operation in the United
                                           [Docket No. FAA–2016–6551; Directorate                  Pkwy, Fort Worth, TX 76177; telephone                 States. Pursuant to our bilateral
                                           Identifier 2013–SW–070–AD; Amendment                                                                          agreement with Canada, Transport
                                           39–18682; AD 2016–21–01]
                                                                                                   (817) 222–5110; email matthew.fuller@
                                                                                                   faa.gov.                                              Canada, its technical representative, has
                                           RIN 2120–AA64                                                                                                 notified us of the unsafe condition
                                                                                                   SUPPLEMENTARY INFORMATION:
                                                                                                                                                         described in its AD. We are issuing this
                                           Airworthiness Directives; Bell                          Discussion                                            AD because we evaluated all
                                           Helicopter Textron Helicopters                             On May 10, 2016, at 81 FR 28766, the               information provided by Transport
                                                                                                   Federal Register published our notice of              Canada and determined the unsafe
                                           AGENCY:  Federal Aviation                                                                                     condition exists and is likely to exist or
                                           Administration (FAA), DOT.                              proposed rulemaking (NPRM), which
                                                                                                   proposed to amend 14 CFR part 39 by                   develop on other helicopters of the same
                                           ACTION: Final rule.                                                                                           type design and that air safety and the
                                                                                                   adding an AD that would apply to
                                                                                                   certain serial-numbered Bell Model 430                public interest require adopting the AD
                                           SUMMARY:    We are adopting a new
                                                                                                   helicopters with bolt part number (P/N)               requirements as proposed.
                                           airworthiness directive (AD) for certain
                                           Bell Helicopter Textron (Bell) Model                    MS21250–08083 installed. The NPRM                     Differences Between This AD and the
                                           430 helicopters. This AD requires                       proposed to require, within 10 hours
                                                                                                                                                         Transport Canada AD
                                           establishing a life limit for a certain                 time-in-service (TIS), revising the
                                           main rotor hub attachment bolt (bolt)                   Airworthiness Limitations section of the                This AD requires compliance within
                                           and removing from service each bolt                     applicable maintenance manual or                      10 hours TIS, while the Transport
                                           that has met or exceeded its life limit.                Instructions for Continued                            Canada AD requires compliance within
                                           This AD was prompted by a                               Airworthiness (ICA) by establishing a                 60 days.
                                           documentation error that omitted the                    life limit of 5,000 hours TIS for each
                                                                                                   bolt P/N MS21250–08083, determining                   Related Service Information
                                           life limit of a certain part-numbered bolt
                                           from the Airworthiness Limitations                      the number of hours TIS for each bolt
                                                                                                                                                           We reviewed Bell Helicopter Alert
                                           section of the maintenance manual. The                  and using the helicopter’s hours if the
                                                                                                   hours TIS of a bolt is unknown, and                   Service Bulletin 430–12–47, dated
                                           actions of this AD are intended to                                                                            November 14, 2012 (ASB). The ASB
                                           establish a life limit for a certain part-              removing from service each bolt that has
                                                                                                   reached or exceeded its life limit. The               states that original bolt P/N 20–065–
                                           numbered bolt to prevent failure of a                                                                         08083 has a retirement life of 5,000
                                           bolt, failure of a main rotor hub, and                  proposed requirements were intended to
                                                                                                   establish a life limit for the bolt to                hours but has been replaced by standard
                                           subsequent loss of control of a                                                                               bolt P/N MS21250–08083, which does
                                           helicopter.                                             prevent failure of a bolt, failure of a
                                                                                                   main rotor hub, and subsequent loss of                not have a life limit listed in the
                                           DATES:  This AD is effective November                   control of a helicopter.                              maintenance manual. The purpose of
                                           18, 2016.                                                  Transport Canada, which is the                     the ASB is to establish a life limit of
                                           ADDRESSES: For service information                      aviation authority for Canada, has                    5,000 hours for the replacement bolt.
                                           identified in this final rule, contact Bell             issued Canadian AD No. CF–2013–26,                    Bell specifies reviewing the aircraft
                                           Helicopter Textron Canada Limited,                      dated September 24, 2013, to correct an               records back to January 2009 to
                                           12,800 Rue de l’Avenir, Mirabel, Quebec                 unsafe condition for certain serial-                  determine which part-numbered bolts
                                           J7J1R4; telephone (450) 437–2862 or                     numbered Bell Model 430 helicopters.                  are installed. If a replacement bolt P/N
                                           (800) 363–8023; fax (450) 433–0272; or                  Transport Canada advises that bolt P/N                MS21250–08083 is installed, the ASB
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                                           at http://www.bellcustomer.com/files/.                  MS21250–08083, which replaced bolt                    specifies using data from aircraft records
                                           You may review the referenced service                   P/N 20–065–08083 in 2009, has a                       to create a historical service record for
                                           information at the FAA, Office of the                   retirement life of 5,000 hours. However,              the replacement bolts and reflecting the
                                           Regional Counsel, Southwest Region,                     the retirement life for the replacement               5,000 hours life limit. The ASB also
                                           10101 Hillwood Pkwy, Room 6N–321,                       bolt was inadvertently omitted from the               specifies updating the Bell 430
                                           Fort Worth, TX 76177.                                   limitations section of the Bell 430                   maintenance manual.


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                                                             Federal Register / Vol. 81, No. 199 / Friday, October 14, 2016 / Rules and Regulations                                             70929

                                           Costs of Compliance                                     List of Subjects in 14 CFR Part 39                    Management Group, Rotorcraft Directorate,
                                                                                                                                                         FAA, 10101 Hillwood Pkwy, Fort Worth, TX
                                             We estimate that this AD affects 43                     Air transportation, Aircraft, Aviation              76177; telephone (817) 222–5110; email
                                           helicopters of U.S. Registry.                           safety, Incorporation by reference,                   9-ASW-FTW-AMOC-Requests@faa.gov.
                                             We estimate that operators may incur                  Safety.                                                 (2) For operations conducted under a 14
                                           the following costs to comply with this                 Adoption of the Amendment                             CFR part 119 operating certificate or under
                                           AD. At an average labor cost of $85 per                                                                       14 CFR part 91, subpart K, we suggest that
                                           work-hour, we estimate reviewing and                      Accordingly, under the authority                    you notify your principal inspector, or
                                           revising the records requires 1 work-                   delegated to me by the Administrator,                 lacking a principal inspector, the manager of
                                                                                                   the FAA amends 14 CFR part 39 as                      the local flight standards district office or
                                           hour for a cost of about $85 per
                                                                                                   follows:                                              certificate holding district office, before
                                           helicopter and $3,655 for the U.S. fleet.                                                                     operating any aircraft complying with this
                                           We estimate replacing a bolt that has                                                                         AD through an AMOC.
                                                                                                   PART 39—AIRWORTHINESS
                                           exceeded its life limit requires 0.5 work-
                                                                                                   DIRECTIVES                                            (g) Additional Information
                                           hour plus $290 for a replacement bolt,
                                           for a total cost of $333 per bolt.                      ■ 1. The authority citation for part 39                  (1) Bell Helicopter Alert Service Bulletin
                                                                                                                                                         430–12–47, dated November 14, 2012, which
                                           Authority for This Rulemaking                           continues to read as follows:
                                                                                                                                                         is not incorporated by reference, contains
                                              Title 49 of the United States Code                       Authority: 49 U.S.C. 106(g), 40113, 44701.        additional information about the subject of
                                                                                                                                                         this final rule. For service information
                                           specifies the FAA’s authority to issue                  § 39.13    [Amended]                                  identified in this final rule, contact Bell
                                           rules on aviation safety. Subtitle I,                                                                         Helicopter Textron Canada Limited, 12,800
                                                                                                   ■ 2. The FAA amends § 39.13 by adding
                                           section 106, describes the authority of                                                                       Rue de l’Avenir, Mirabel, Quebec J7J1R4;
                                                                                                   the following new airworthiness
                                           the FAA Administrator. Subtitle VII:                                                                          telephone (450) 437–2862 or (800) 363–8023;
                                                                                                   directive (AD):
                                           Aviation Programs, describes in more                                                                          fax (450) 433–0272; or at http://
                                           detail the scope of the Agency’s                        2016–21–01 Bell Helicopter Textron:                   www.bellcustomer.com/files/. You may
                                           authority.                                                  Amendment 39–18682; Docket No.                    review a copy of the service information at
                                              We are issuing this rulemaking under                     FAA–2016–6551; Directorate Identifier             the FAA, Office of the Regional Counsel,
                                                                                                       2013–SW–070–AD.                                   Southwest Region, 10101 Hillwood Pkwy,
                                           the authority described in Subtitle VII,
                                                                                                   (a) Applicability                                     Room 6N–321, Fort Worth, TX 76177.
                                           Part A, Subpart III, Section 44701:
                                                                                                                                                            (2) The subject of this AD is addressed in
                                           ‘‘General requirements.’’ Under that                      This AD applies to Model 430 helicopters,           Transport Canada AD No. CF–2013–26, dated
                                           section, Congress charges the FAA with                  serial number 49001 through 49129, with a             September 24, 2013. You may view the
                                           promoting safe flight of civil aircraft in              main rotor head attachment bolt (bolt) part           Transport Canada AD on the Internet at
                                           air commerce by prescribing regulations                 number (P/N) MS21250–08083 installed,                 http://www.regulations.gov in Docket No.
                                           for practices, methods, and procedures                  certificated in any category.                         FAA–2016–6551.
                                           the Administrator finds necessary for                   (b) Unsafe Condition                                  (h) Subject
                                           safety in air commerce. This regulation                    This AD defines the unsafe condition as a            Joint Aircraft Service Component (JASC)
                                           is within the scope of that authority                   bolt remaining in service beyond its fatigue          Code: 6220 Main Rotor Head.
                                           because it addresses an unsafe condition                life. This condition could result in failure of
                                           that is likely to exist or develop on                   a bolt, failure of the main rotor hub and               Issued in Fort Worth, Texas, on October 3,
                                           helicopters identified in this rulemaking               subsequent loss of control of a helicopter.           2016.
                                           action.                                                 (c) Effective Date                                    Lance T. Gant,
                                                                                                                                                         Manager, Rotorcraft Directorate, Aircraft
                                           Regulatory Findings                                        This AD becomes effective November 18,
                                                                                                                                                         Certification Service.
                                                                                                   2016.
                                             This AD will not have federalism                                                                            [FR Doc. 2016–24741 Filed 10–13–16; 8:45 am]
                                           implications under Executive Order                      (d) Compliance                                        BILLING CODE 4910–13–P
                                           13132. This AD will not have a                            You are responsible for performing each
                                           substantial direct effect on the States, on             action required by this AD within the
                                           the relationship between the national                   specified compliance time unless it has               DEPARTMENT OF TRANSPORTATION
                                                                                                   already been accomplished prior to that time.
                                           government and the States, or on the
                                           distribution of power and                               (e) Required Actions                                  Federal Aviation Administration
                                           responsibilities among the various                         Within 10 hours time-in-service (TIS):
                                           levels of government.                                      (1) Revise the Airworthiness Limitations           14 CFR Part 39
                                             For the reasons discussed above, I                    section of the applicable maintenance                 [Docket No. FAA–2016–0069; Directorate
                                           certify that this AD:                                   manual or Instructions for Continued                  Identifier 2016–NE–01–AD; Amendment 39–
                                             (1) Is not a ‘‘significant regulatory                 Airworthiness (ICA) to establish a life limit         18685; AD 2016–21–04]
                                           action’’ under Executive Order 12866;                   of 5,000 hours TIS for each bolt P/N
                                                                                                   MS21250–08083.                                        RIN 2120–AA64
                                             (2) Is not a ‘‘significant rule’’ under
                                                                                                      (2) Determine the number of hours TIS for
                                           DOT Regulatory Policies and Procedures                  each bolt and update the helicopter’s                 Airworthiness Directives; Continental
                                           (44 FR 11034, February 26, 1979);                       historical records. If the hours TIS is               Motors, Inc. Reciprocating Engines
                                             (3) Will not affect intrastate aviation               unknown, calculate the number of hours TIS
                                           in Alaska to the extent that it justifies               by counting the helicopter’s hours TIS                AGENCY:  Federal Aviation
                                           making a regulatory distinction; and                    beginning January 1, 2009.                            Administration (FAA), DOT.
                                             (4) Will not have a significant                          (3) Remove from service each bolt that has         ACTION: Final rule.
                                           economic impact, positive or negative,                  reached or exceeded its life limit.
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                                           on a substantial number of small entities               (f) Alternative Methods of Compliance                 SUMMARY:  We are adopting a new
                                           under the criteria of the Regulatory                    (AMOCs)                                               airworthiness directive (AD) for certain
                                           Flexibility Act.                                           (1) The Manager, Safety Management                 Continental Motors, Inc. (CMI) TSIO–
                                             We prepared an economic evaluation                    Group, FAA, may approve AMOCs for this                550–K, TSIOF–550–K, TSIO–550–C,
                                           of the estimated costs to comply with                   AD. Send your proposal to: Matt Fuller,               TSIOF–550–D, and TSIO–550–N
                                           this AD and placed it in the AD docket.                 Senior Aviation Safety Engineer, Safety               reciprocating engines. This AD was


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Document Created: 2016-10-14 00:00:33
Document Modified: 2016-10-14 00:00:33
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule.
DatesThis AD is effective November 18, 2016.
ContactMatt Fuller, Senior Aviation Safety Engineer, Safety Management Group, Rotorcraft Directorate, FAA, 10101 Hillwood Pkwy, Fort Worth, TX 76177; telephone (817) 222-5110; email [email protected]
FR Citation81 FR 70928 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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