83 FR 8605 - Airworthiness Directives; AgustaWestland S.p.A. Helicopters

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 40 (February 28, 2018)

Page Range		8605-8606
FR Document		2018-03930

We are adopting a new airworthiness directive (AD) for certain AgustaWestland S.p.A. (AgustaWestland) Model AW189 helicopters. This AD requires replacing the seal and filler wedges of all emergency exit windows. This AD was prompted by a report that some windows were improperly glued when installed. The actions of this AD are intended to correct an unsafe condition on these products.

Federal Register, Volume 83 Issue 40 (Wednesday, February 28, 2018)

[Federal Register Volume 83, Number 40 (Wednesday, February 28, 2018)]
[Rules and Regulations]
[Pages 8605-8606]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-03930]



========================================================================
Rules and Regulations
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains regulatory documents 
having general applicability and legal effect, most of which are keyed 
to and codified in the Code of Federal Regulations, which is published 
under 50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by the Superintendent of Documents. 

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Federal Register / Vol. 83, No. 40 / Wednesday, February 28, 2018 / 
Rules and Regulations

[[Page 8605]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0111; Product Identifier 2016-SW-079-AD; Amendment 
39-19211; AD 2018-05-02]
RIN 2120-AA64


Airworthiness Directives; AgustaWestland S.p.A. Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
AgustaWestland S.p.A. (AgustaWestland) Model AW189 helicopters. This AD 
requires replacing the seal and filler wedges of all emergency exit 
windows. This AD was prompted by a report that some windows were 
improperly glued when installed. The actions of this AD are intended to 
correct an unsafe condition on these products.

DATES: This AD is effective April 4, 2018.

ADDRESSES: For service information identified in this final rule, 
contact Leonardo S.p.A. Helicopters, Matteo Ragazzi, Head of 
Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate (Va) 
Italy; telephone +39-0331-711756; fax +39-0331-229046; or at http://www.leonardocompany.com/-/bulletins. 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-2017-
0111; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this AD, the European Aviation Safety Agency (EASA) AD, any 
incorporated-by-reference service information, the economic evaluation, 
any comments received, and other information. The street address for 
Docket Operations (phone: 800-647-5527) is U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Martin R. Crane, Aviation Safety 
Engineer, Regulations & Policy Section, Rotorcraft Standards Branch, 
FAA, 10101 Hillwood Pkwy, Fort Worth, TX 76177; telephone (817) 222-
5110; email [email protected].

SUPPLEMENTARY INFORMATION:

Discussion

    On November 2, 2017, at 82 FR 50847, 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 AgustaWestland Model 
AW189 helicopters. The NPRM proposed to require replacing the seal and 
filler wedges of all emergency exit windows. The proposed requirements 
were intended to prevent the failure of the windows from jettisoning 
during an emergency.
    The NPRM was prompted by AD No. 2016-0216, dated October 28, 2016, 
issued by EASA, which is the Technical Agent for the Member States of 
the European Union, to correct an unsafe condition for Leonardo 
Helicopters (previously Finmeccanica S.p.A., previously AgustaWestland) 
Model AW189 helicopters, serial numbers 49007 through 49021, 49023, 
49029, 49033, 49035, 89001, 89003, 89004, 92001, 92003, and 92005. The 
EASA AD does not apply to windows that have been reinstalled at least 
once since helicopter delivery and windows that are part of bubble 
window kit part number (P/N) 8G5620F00111.
    EASA advises that some windows were installed with glue applied in 
locations that were not in accordance with the approved design. This 
condition, if not corrected, could prevent the jettisoning of 
helicopter emergency exit windows, possibly affecting the evacuation of 
crew and passengers during an emergency situation, EASA advises. EASA 
consequently requires replacement of the seal and the filler wedges of 
the emergency exit windows installed in the cockpit doors and cabin.
    The FAA is in the process of updating AgustaWestland's name change 
to Leonardo Helicopters on its type certificate. Because this name 
change is not yet effective, this AD specifies AgustaWestland.

Comments

    We gave the public the opportunity to participate in developing 
this AD, but we received no comments on the NPRM.

FAA's Determination

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

Related Service Information

    We reviewed Leonardo Helicopters Bollettino Tecnico No. 189-118, 
dated October 20, 2016. This service information specifies replacing 
the seal and filler wedges on all cockpit door and cabin emergency exit 
windows of Model AW189 helicopters, except on those windows that have 
been replaced or that are part of bubble window kit P/N 8G5620F00111.

Costs of Compliance

    We estimate that this AD affects 2 helicopters of U.S. Registry and 
that labor costs average $85 per work-hour. Based on these estimates, 
we expect that removing and replacing the window seals and fillers 
requires 40 work-hours and that parts cost about $834, for a total cost 
of $4,234 per helicopter and $8,468 for the U.S. fleet.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue

[[Page 8606]]

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):

2018-05-02 AgustaWestland S.p.A.: Amendment 39-19211; Docket No. 
FAA-2017-0111; Product Identifier 2016-SW-079-AD.

(a) Applicability

    This AD applies to Model AW189 helicopters, serial number 49007 
through 49021, 49023, 49029, 49033, 49035, 89001, 89003, 89004, 
92001, 92003, and 92005, certificated in any category.

(b) Unsafe Condition

    This AD defines the unsafe condition as improperly glued 
emergency exit windows. This condition could result in the window 
failing to jettison, preventing the occupants from exiting the 
helicopter during an emergency.

(c) Effective Date

    This AD becomes effective April 4, 2018.

(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 75 hours time-in-service, replace the seal and filler 
wedges of each cabin and cockpit door emergency exit window, except 
bubble windows installed in accordance with bubble window kit part 
number 8G5620F00111.

(f) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Safety Management Section, Rotorcraft Standards 
Branch, FAA, may approve AMOCs for this AD. Send your proposal to: 
Martin R. Crane, Aviation Safety Engineer, Regulations & Policy 
Section, Rotorcraft Standards Branch, 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) Leonardo Helicopters Bollettino Tecnico No. 189-118, dated 
October 20, 2016, which is not incorporated by reference, contains 
additional information about the subject of this AD. For service 
information identified in this AD, contact Leonardo S.p.A. 
Helicopters, Matteo Ragazzi, Head of Airworthiness, Viale G.Agusta 
520, 21017 C.Costa di Samarate (Va) Italy; telephone +39-0331-
711756; fax +39-0331-229046; or at http://www.leonardocompany.com/-/bulletins. 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 European Aviation 
Safety Agency (EASA) AD No. 2016-0216, dated October 28, 2016. You 
may view the EASA AD on the internet at http://www.regulations.gov 
in AD Docket No. FAA-2017-0111.

(h) Subject

    Joint Aircraft Service Component (JASC) Code: 5600, Window/
Windshield System.

    Issued in Fort Worth, Texas, on February 21, 2018.
Scott A. Horn,
Deputy Director for Regulatory Operations, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2018-03930 Filed 2-27-18; 8:45 am]
 BILLING CODE 4910-13-P

8605

Rules and Regulations Federal Register
Vol. 83, No. 40

Wednesday, February 28, 2018

This section of the FEDERAL REGISTER between 9 a.m. and 5 p.m., Monday affecting the evacuation of crew and
contains regulatory documents having general through Friday, except Federal holidays. passengers during an emergency
applicability and legal effect, most of which The AD docket contains this AD, the situation, EASA advises. EASA
are keyed to and codified in the Code of European Aviation Safety Agency consequently requires replacement of
Federal Regulations, which is published under (EASA) AD, any incorporated-by- the seal and the filler wedges of the
50 titles pursuant to 44 U.S.C. 1510.
reference service information, the emergency exit windows installed in the
The Code of Federal Regulations is sold by economic evaluation, any comments cockpit doors and cabin.
the Superintendent of Documents. received, and other information. The The FAA is in the process of updating
street address for Docket Operations AgustaWestland’s name change to
(phone: 800–647–5527) is U.S. Leonardo Helicopters on its type
DEPARTMENT OF TRANSPORTATION Department of Transportation, Docket certificate. Because this name change is
Operations, M–30, West Building not yet effective, this AD specifies
Federal Aviation Administration Ground Floor, Room W12–140, 1200 AgustaWestland.
New Jersey Avenue SE, Washington, DC Comments
14 CFR Part 39 20590.
[Docket No. FAA–2017–0111; Product FOR FURTHER INFORMATION CONTACT:
We gave the public the opportunity to
Identifier 2016–SW–079–AD; Amendment Martin R. Crane, Aviation Safety participate in developing this AD, but
39–19211; AD 2018–05–02] Engineer, Regulations & Policy Section, we received no comments on the NPRM.
RIN 2120–AA64 Rotorcraft Standards Branch, FAA, FAA’s Determination
10101 Hillwood Pkwy, Fort Worth, TX These helicopters have been approved
Airworthiness Directives; 76177; telephone (817) 222–5110; email by the aviation authority of Italy and are
AgustaWestland S.p.A. Helicopters martin.r.crane@faa.gov. approved for operation in the United
SUPPLEMENTARY INFORMATION: States. Pursuant to our bilateral
AGENCY: Federal Aviation
Administration (FAA), DOT. Discussion agreement with Italy, EASA, its
ACTION: Final rule. technical representative, has notified us
On November 2, 2017, at 82 FR 50847, of the unsafe condition described in the
SUMMARY: We are adopting a new the Federal Register published our EASA AD. We are issuing this AD
airworthiness directive (AD) for certain notice of proposed rulemaking (NPRM), because we evaluated all information
AgustaWestland S.p.A. which proposed to amend 14 CFR part provided by EASA and determined the
(AgustaWestland) Model AW189 39 by adding an AD that would apply unsafe condition exists and is likely to
helicopters. This AD requires replacing to AgustaWestland Model AW189 exist or develop on other helicopters of
the seal and filler wedges of all helicopters. The NPRM proposed to these same type designs and that air
emergency exit windows. This AD was require replacing the seal and filler safety and the public interest require
prompted by a report that some wedges of all emergency exit windows. adopting the AD requirements as
windows were improperly glued when The proposed requirements were proposed.
installed. The actions of this AD are intended to prevent the failure of the
windows from jettisoning during an Related Service Information
intended to correct an unsafe condition
on these products. emergency. We reviewed Leonardo Helicopters
The NPRM was prompted by AD No. Bollettino Tecnico No. 189–118, dated
DATES: This AD is effective April 4, 2016–0216, dated October 28, 2016,
2018. October 20, 2016. This service
issued by EASA, which is the Technical information specifies replacing the seal
ADDRESSES: For service information Agent for the Member States of the and filler wedges on all cockpit door
identified in this final rule, contact European Union, to correct an unsafe and cabin emergency exit windows of
Leonardo S.p.A. Helicopters, Matteo condition for Leonardo Helicopters Model AW189 helicopters, except on
Ragazzi, Head of Airworthiness, Viale (previously Finmeccanica S.p.A., those windows that have been replaced
G.Agusta 520, 21017 C.Costa di previously AgustaWestland) Model or that are part of bubble window kit
Samarate (Va) Italy; telephone +39– AW189 helicopters, serial numbers P/N 8G5620F00111.
0331–711756; fax +39–0331–229046; or 49007 through 49021, 49023, 49029,
at http://www.leonardocompany.com/-/ 49033, 49035, 89001, 89003, 89004, Costs of Compliance
bulletins. You may review the 92001, 92003, and 92005. The EASA AD We estimate that this AD affects 2
referenced service information at the does not apply to windows that have helicopters of U.S. Registry and that
FAA, Office of the Regional Counsel, been reinstalled at least once since labor costs average $85 per work-hour.
Southwest Region, 10101 Hillwood helicopter delivery and windows that Based on these estimates, we expect that
Pkwy, Room 6N–321, Fort Worth, TX are part of bubble window kit part removing and replacing the window
76177. number (P/N) 8G5620F00111. seals and fillers requires 40 work-hours
sradovich on DSK3GMQ082PROD with RULES

EASA advises that some windows and that parts cost about $834, for a
Examining the AD Docket were installed with glue applied in total cost of $4,234 per helicopter and
You may examine the AD docket on locations that were not in accordance $8,468 for the U.S. fleet.
the internet at http:// with the approved design. This
www.regulations.gov by searching for condition, if not corrected, could Authority for This Rulemaking
and locating Docket No. FAA–2017– prevent the jettisoning of helicopter Title 49 of the United States Code
0111; or in person at Docket Operations emergency exit windows, possibly specifies the FAA’s authority to issue

VerDate Sep<11>2014 16:11 Feb 27, 2018 Jkt 244001 PO 00000 Frm 00001 Fmt 4700 Sfmt 4700 E:\FR\FM\28FER1.SGM 28FER1

8606 Federal Register / Vol. 83, No. 40 / Wednesday, February 28, 2018 / Rules and Regulations

rules on aviation safety. Subtitle I, § 39.13 [Amended] Regional Counsel, Southwest Region, 10101
section 106, describes the authority of Hillwood Pkwy, Room 6N–321, Fort Worth,
■ 2. The FAA amends § 39.13 by adding TX 76177.
the FAA Administrator. Subtitle VII: the following new airworthiness (2) The subject of this AD is addressed in
Aviation Programs, describes in more directive (AD): European Aviation Safety Agency (EASA) AD
detail the scope of the Agency’s No. 2016–0216, dated October 28, 2016. You
2018–05–02 AgustaWestland S.p.A.:
authority. Amendment 39–19211; Docket No. may view the EASA AD on the internet at
We are issuing this rulemaking under FAA–2017–0111; Product Identifier http://www.regulations.gov in AD Docket No.
the authority described in Subtitle VII, 2016–SW–079–AD. FAA–2017–0111.
Part A, Subpart III, Section 44701: (h) Subject
(a) Applicability
‘‘General requirements.’’ Under that Joint Aircraft Service Component (JASC)
section, Congress charges the FAA with This AD applies to Model AW189
helicopters, serial number 49007 through Code: 5600, Window/Windshield System.
promoting safe flight of civil aircraft in
49021, 49023, 49029, 49033, 49035, 89001, Issued in Fort Worth, Texas, on February
air commerce by prescribing regulations 89003, 89004, 92001, 92003, and 92005, 21, 2018.
for practices, methods, and procedures certificated in any category. Scott A. Horn,
the Administrator finds necessary for
safety in air commerce. This regulation (b) Unsafe Condition Deputy Director for Regulatory Operations,
This AD defines the unsafe condition as Compliance & Airworthiness Division,
is within the scope of that authority
improperly glued emergency exit windows. Aircraft Certification Service.
because it addresses an unsafe condition
that is likely to exist or develop on This condition could result in the window [FR Doc. 2018–03930 Filed 2–27–18; 8:45 am]
failing to jettison, preventing the occupants BILLING CODE 4910–13–P
helicopters identified in this rulemaking from exiting the helicopter during an
action. emergency.
Regulatory Findings (c) Effective Date DEPARTMENT OF TRANSPORTATION
This AD will not have federalism This AD becomes effective April 4, 2018.
Federal Aviation Administration
implications under Executive Order (d) Compliance
13132. This AD will not have a 14 CFR Part 95
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 [Docket No. 31183; Amdt. No. 538]
specified compliance time unless it has
government and the States, or on the already been accomplished prior to that time. IFR Altitudes; Miscellaneous
distribution of power and
(e) Required Actions Amendments
responsibilities among the various
levels of government. Within 75 hours time-in-service, replace AGENCY: Federal Aviation
the seal and filler wedges of each cabin and
For the reasons discussed above, I Administration (FAA), DOT.
cockpit door emergency exit window, except
certify that this AD: bubble windows installed in accordance with ACTION: Final rule.
(1) Is not a ‘‘significant regulatory bubble window kit part number
action’’ under Executive Order 12866; 8G5620F00111. SUMMARY: This amendment adopts
(2) Is not a ‘‘significant rule’’ under miscellaneous amendments to the
(f) Alternative Methods of Compliance required IFR (instrument flight rules)
DOT Regulatory Policies and Procedures (AMOCs)
(44 FR 11034, February 26, 1979); altitudes and changeover points for
(1) The Manager, Safety Management certain Federal airways, jet routes, or
(3) Will not affect intrastate aviation Section, Rotorcraft Standards Branch, FAA,
in Alaska to the extent that it justifies direct routes for which a minimum or
may approve AMOCs for this AD. Send your maximum en route authorized IFR
making a regulatory distinction; and proposal to: Martin R. Crane, Aviation Safety
altitude is prescribed. This regulatory
(4) Will not have a significant Engineer, Regulations & Policy Section,
Rotorcraft Standards Branch, FAA, 10101 action is needed because of changes
economic impact, positive or negative,
Hillwood Pkwy, Fort Worth, TX 76177; occurring in the National Airspace
on a substantial number of small entities
telephone (817) 222–5110; email 9-ASW- System. These changes are designed to
under the criteria of the Regulatory
FTW-AMOC-Requests@faa.gov. provide for the safe and efficient use of
Flexibility Act. (2) For operations conducted under a 14 the navigable airspace under instrument
We prepared an economic evaluation CFR part 119 operating certificate or under conditions in the affected areas.
of the estimated costs to comply with 14 CFR part 91, subpart K, we suggest that
DATES: Effective Date: 0901 UTC, March
this AD and placed it in the AD docket. you notify your principal inspector, or
lacking a principal inspector, the manager of 29, 2018.
List of Subjects in 14 CFR Part 39 the local flight standards district office or FOR FURTHER INFORMATION CONTACT:
Air transportation, Aircraft, Aviation certificate holding district office, before Harry Hodges, Flight Procedure
safety, Incorporation by reference, operating any aircraft complying with this Standards Branch (AMCAFS–420),
AD through an AMOC. Flight Technologies and Programs
Safety.
(g) Additional Information Division, Flight Standards Service,
Adoption of the Amendment Federal Aviation Administration, Mike
(1) Leonardo Helicopters Bollettino
Accordingly, under the authority Tecnico No. 189–118, dated October 20, Monroney Aeronautical Center, 6500
delegated to me by the Administrator, 2016, which is not incorporated by reference, South MacArthur Blvd., Oklahoma City,
the FAA amends 14 CFR part 39 as contains additional information about the OK 73169 (Mail Address: P.O. Box
follows: subject of this AD. For service information 25082, Oklahoma City, OK 73125)
sradovich on DSK3GMQ082PROD with RULES

identified in this AD, contact Leonardo telephone: (405) 954–4164.
PART 39—AIRWORTHINESS S.p.A. Helicopters, Matteo Ragazzi, Head of
SUPPLEMENTARY INFORMATION: This
DIRECTIVES Airworthiness, Viale G.Agusta 520, 21017
C.Costa di Samarate (Va) Italy; telephone amendment to part 95 of the Federal
+39–0331–711756; fax +39–0331–229046; or Aviation Regulations (14 CFR part 95)
■ 1. The authority citation for part 39 amends, suspends, or revokes IFR
at http://www.leonardocompany.com/-/
continues to read as follows: bulletins. You may review a copy of the altitudes governing the operation of all
Authority: 49 U.S.C. 106(g), 40113, 44701. service information at the FAA, Office of the aircraft in flight over a specified route

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Document Created: 2018-02-28 03:19:57
Document Modified: 2018-02-28 03:19:57

Category		Regulatory Information
Collection		Federal Register
sudoc Class		AE 2.7: GS 4.107: AE 2.106:
Publisher		Office of the Federal Register, National Archives and Records Administration
Section		Rules and Regulations
Action		Final rule.
Dates		This AD is effective April 4, 2018.
Contact		Martin R. Crane, Aviation Safety Engineer, Regulations & Policy Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy, Fort Worth, TX 76177; telephone (817) 222- 5110; email [email protected]
FR Citation		83 FR 8605
RIN Number		2120-AA64
CFR Associated		Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

83 FR 8605 - Airworthiness Directives; AgustaWestland S.p.A. Helicopters

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 83, Issue 40 (February 28, 2018)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration