83 FR 15945 - Special Conditions: Airbus Helicopters Model AS350B2 and AS350B3 Helicopters; Installation of Garmin International, Inc., Autopilot System

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 72 (April 13, 2018)

Page Range		15945-15946
FR Document		2018-07655

These special conditions are issued for Airbus Helicopters Model AS350B2 and AS350B3 helicopters. These helicopters as modified by Garmin International, Inc., (Garmin) will have a novel or unusual design feature associated with the Garmin Flight Control (GFC) 600H autopilot with stability and control augmentation system (AP/SCAS). The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

Federal Register, Volume 83 Issue 72 (Friday, April 13, 2018)

[Federal Register Volume 83, Number 72 (Friday, April 13, 2018)]
[Rules and Regulations]
[Pages 15945-15946]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-07655]



========================================================================
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. 

========================================================================


Federal Register / Vol. 83, No. 72 / Friday, April 13, 2018 / Rules 
and Regulations

[[Page 15945]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 27

[Docket No.FAA-2017-1130; Notice No. 27-043-SC]


Special Conditions: Airbus Helicopters Model AS350B2 and AS350B3 
Helicopters; Installation of Garmin International, Inc., Autopilot 
System

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions.

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

SUMMARY: These special conditions are issued for Airbus Helicopters 
Model AS350B2 and AS350B3 helicopters. These helicopters as modified by 
Garmin International, Inc., (Garmin) will have a novel or unusual 
design feature associated with the Garmin Flight Control (GFC) 600H 
autopilot with stability and control augmentation system (AP/SCAS). The 
applicable airworthiness regulations do not contain adequate or 
appropriate safety standards for this design feature. These special 
conditions contain the additional safety standards that the 
Administrator considers necessary to establish a level of safety 
equivalent to that established by the existing airworthiness standards.

DATES: The effective date of these special conditions is April 13, 
2018.

FOR FURTHER INFORMATION CONTACT: George Harrum, Aerospace Engineer, 
FAA, Rotorcraft Standards Branch, Policy and Innovations Division, 
10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222-4087; 
email [email protected].

SUPPLEMENTARY INFORMATION: 

Background

    On October 10, 2016, Garmin applied for a supplemental type 
certificate (STC) to install a GFC 600H AP/SCAS in Airbus Helicopters 
Model AS350B2 and AS350B3 helicopters. The Model AS350B2 and AS350B3 
helicopters are 14 CFR part 27 normal category, single turbine engine, 
conventional helicopters designed for civil operation. These helicopter 
models are capable of carrying up to five passengers with one pilot and 
have a maximum gross weight of up to 5,220 pounds, depending on the 
model configuration. The major design features include a 3-blade, fully 
articulated main rotor, an anti-torque tail rotor system, a skid 
landing gear, and a visual flight rule basic avionics configuration.
    Garmin proposes to modify these model helicopters by installing a 
SCAS with autopilot functions in 2 or 3 axes, depending on the number 
of servos installed. The possible failure conditions for this system, 
and their effect on the continued safe flight and landing of the 
helicopter, are more severe than those envisioned by the present rules. 
The present 14 CFR 27.1309(b) and (c) regulations do not adequately 
address the safety requirements for systems whose failures could result 
in ``catastrophic'' or ``hazardous/severe-major'' failure conditions, 
or for complex systems whose failures could result in ``major'' failure 
conditions. When these rules were promulgated, it was not envisioned 
that a normal category rotorcraft would use systems that are complex or 
whose failure could result in ``catastrophic'' or ``hazardous/severe-
major'' effects on the rotorcraft. This is particularly true with the 
application of new technology, new application of standard technology, 
or other applications not envisioned by the rule that affect safety. 
The Garmin AP/SCAS controls rotorcraft flight control surfaces. 
Possible failure modes exhibited by this system could result in a 
catastrophic event.

Type Certification Basis

    Under 14 CFR 21.101 and 21.115, Garmin must show that the Airbus 
Helicopters Model AS350B2 and AS350B3 helicopters, as changed, continue 
to meet the applicable provisions of the regulations incorporated by 
reference in Type Certificate No. H9EU or the applicable regulations in 
effect on the date of application for the change. The regulations 
incorporated by reference in the type certificate are commonly referred 
to as the ``original type certification basis.'' The regulations 
incorporated by reference in Type Certificate No. H9EU are as follows:
    14 CFR 21.29 and part 27 effective February 1, 1965, plus 
Amendments 27-1 through 27-10.
    For aircraft incorporating mod. OP3369 (2370 kg/5225 lb mass 
extension), the following 14 CFR part 27 Amendments 27-1 through 27-40 
are replacing the same requirement from the certification basis above: 
Sec. Sec.  27.1; 27.21; 27.25; 27.27; 27.33; 27.45; 27.51; 27.65; 
27.71; 27.73; 27.75; 27.79; 27.141; 27.143; 27.173; 27.175; 27.177; 
27.241; 27.301; 27.303; 27.305; 27.307; 27.309; 27.321; 27.337; 27.339; 
27.341; 27.351; 27.471; 27.473; 27.501; 27.505; 27.521; 27.547; 27.549; 
27.563(b); 27.571; 27.602; 27.661; 27.663; 27.695; 27.723; 27.725; 
27.727; 27.737; 27.751; 27.753; 27.801(b)(d); 27.927(c); 27.1041; 
27.1043; 27.1045; 27.1301; 27.1501; 27.1519; 27.1529; 27.1581; 27.1583; 
27.1585; 27.1587; 27.1589.
    For AS350B3 aircraft incorporating mod. OP-4605 (installation of a 
fuel system improving crashworthiness), 14 CFR 27.561(c) at Amendment 
27-32 replaces the same requirement from the certification basis above 
for the following elements of the fuel tank lower structure affected by 
this modification: cradles, longitudinal beams, X-stops and rods.
    Additionally, Garmin must comply with the equivalent level of 
safety findings, exemptions, and special conditions prescribed by the 
Administrator as part of the certification basis.
    The Administrator has determined the applicable airworthiness 
regulations (that is, 14 CFR part 27), as they pertain to this STC, do 
not contain adequate or appropriate safety standards for the Airbus 
Helicopters Model AS350B2 and AS350B3 helicopters because of a novel or 
unusual design feature. Therefore, we propose to prescribe these 
special conditions under Sec.  21.16.
    Special conditions are initially applicable to the model for which 
they are issued. Should the applicant apply for an STC to change any 
other model included on the same type certificate to incorporate the 
same or similar novel or unusual design feature, the special conditions 
would also apply to the other model under Sec.  21.101.
    In addition to the applicable airworthiness regulations and special 
conditions, Garmin must show that the

[[Page 15946]]

Airbus Helicopters Model AS350B2 and AS350B3 helicopters, as changed, 
comply with the noise certification requirements of 14 CFR part 36.
    The FAA issues special conditions, as defined in 14 CFR 11.19, in 
accordance with Sec.  11.38 and they become part of the type 
certification basis under Sec.  21.101.

Novel or Unusual Design Features

    The Airbus Helicopters Model AS350B2 and AS350B3 helicopter 
incorporates the following novel or unusual design features: A GFC 600H 
AP/SCAS. This GFC 600H AP/SCAS performs non-critical control functions. 
The GFC 600H AP/SCAS is a two or three axis system with the following 
novel functions: Limit cueing, level mode, and hover assist.

Discussion

    These special conditions clarify the requirement to perform a 
proper failure analysis and also recognizes that the severity of 
failures can vary. Current industry standards and practices recognize 
five failure condition categories: Catastrophic, Hazardous, Major, 
Minor, and No-Safety Effect. These special conditions address the 
safety requirement for systems whose failures could result in 
catastrophic or hazardous/severe-major failure conditions and for 
complex systems whose failures could result in major failure 
conditions.
    To comply with the provisions of the special conditions, we require 
that Garmin provide the FAA with a systems safety assessment (SSA) for 
the final GFC 600H AP/SCAS installation configuration that adequately 
address the safety objectives established by a functional hazard 
assessment (FHA) and a preliminary system safety assessment (PSSA), 
including the fault tree analysis (FTA). This ensures that all failure 
conditions and their resulting effects are adequately addressed for the 
installed GFC 600H AP/SCAS. The SSA process, FHA, PSSA, and FTA are all 
parts of the overall safety assessment process discussed in FAA 
Advisory Circular 27-1B, Certification of Normal Category Rotorcraft, 
and Society of Automotive Engineers document Aerospace Recommended 
Practice 4761, Guidelines and Methods for Conducting the Safety 
Assessment Process on Civil Airborne Systems and Equipment.
    These special conditions require that the GFC 600H AP/SCAS 
installed on Airbus Helicopters Model AS350B2 and Model AS350B3 
helicopters meet the requirements to adequately address the failure 
effects identified by the FHA, and subsequently verified by the SSA, 
within the defined design integrity requirements.

Comments

    No comments were received in response to the Notice of proposed 
special conditions No. 27-043-SC (82 FR 57685, December 7, 2017). The 
closing date for comments was January 22, 2018. Accordingly, the 
special conditions are adopted as proposed.

Applicability

    As discussed above, these special conditions are applicable to 
Airbus Helicopters Model AS350B2 and AS350B3 helicopters. Should Garmin 
apply at a later date for an STC to modify any other model included on 
Type Certificate Number H9EU to incorporate the same novel or unusual 
design feature, these special conditions would apply to that model as 
well.

Conclusion

    This action affects only certain novel or unusual design features 
on two model helicopters. It is not a rule of general applicability and 
affects only the applicant who applied to the FAA for approval of these 
features.

List of Subjects in 14 CFR Part 27

    Aircraft, Aviation safety, Reporting and recordkeeping 
requirements.

    The authority citation for these special conditions is as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701, 44702, 44704.

The Special Conditions

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the following special conditions are issued as part of 
the type certification basis for Airbus Helicopters Model AS350B2 and 
AS350B3 helicopters modified by Garmin International, Inc. (Garmin).
    Instead of the requirements of 14 CFR 27.1309(b) and (c), the 
following must be met for certification of the Garmin Flight Control 
600H autopilot with stability and control augmentation system:
    (a) The equipment and systems must be designed and installed so 
that any equipment and system does not adversely affect the safety of 
the rotorcraft or its occupants.
    (b) The rotorcraft systems and associated components considered 
separately and in relation to other systems, must be designed and 
installed so that:
    (1) The occurrence of any catastrophic failure condition is 
extremely improbable;
    (2) The occurrence of any hazardous failure condition is extremely 
remote; and
    (3) The occurrence of any major failure condition is remote.
    (c) Information concerning an unsafe system operating condition 
must be provided in a timely manner to the crew to enable them to take 
appropriate corrective action. An appropriate alert must be provided if 
immediate pilot awareness and immediate or subsequent corrective action 
is required. Systems and controls, including indications and 
annunciations, must be designed to minimize crew errors which could 
create additional hazards.

    Issued in Fort Worth, Texas, on March 30, 2018.
Jorge Castillo,
Acting Manager, Rotorcraft Standards Branch, Policy and Innovation 
Division Aircraft Certification Service.
[FR Doc. 2018-07655 Filed 4-12-18; 8:45 am]
 BILLING CODE 4910-13-P

15945

Rules and Regulations Federal Register
Vol. 83, No. 72

Friday, April 13, 2018

This section of the FEDERAL REGISTER 14 CFR part 27 normal category, single incorporated by reference in Type
contains regulatory documents having general turbine engine, conventional helicopters Certificate No. H9EU are as follows:
applicability and legal effect, most of which designed for civil operation. These 14 CFR 21.29 and part 27 effective
are keyed to and codified in the Code of helicopter models are capable of February 1, 1965, plus Amendments 27–
Federal Regulations, which is published under carrying up to five passengers with one 1 through 27–10.
50 titles pursuant to 44 U.S.C. 1510.
pilot and have a maximum gross weight For aircraft incorporating mod.
The Code of Federal Regulations is sold by of up to 5,220 pounds, depending on the OP3369 (2370 kg/5225 lb mass
the Superintendent of Documents. model configuration. The major design extension), the following 14 CFR part 27
features include a 3-blade, fully Amendments 27–1 through 27–40 are
articulated main rotor, an anti-torque replacing the same requirement from the
DEPARTMENT OF TRANSPORTATION tail rotor system, a skid landing gear, certification basis above: §§ 27.1; 27.21;
and a visual flight rule basic avionics 27.25; 27.27; 27.33; 27.45; 27.51; 27.65;
Federal Aviation Administration configuration. 27.71; 27.73; 27.75; 27.79; 27.141;
Garmin proposes to modify these 27.143; 27.173; 27.175; 27.177; 27.241;
14 CFR Part 27 27.301; 27.303; 27.305; 27.307; 27.309;
model helicopters by installing a SCAS
[Docket No.FAA–2017–1130; Notice No. 27– with autopilot functions in 2 or 3 axes, 27.321; 27.337; 27.339; 27.341; 27.351;
043–SC] depending on the number of servos 27.471; 27.473; 27.501; 27.505; 27.521;
installed. The possible failure 27.547; 27.549; 27.563(b); 27.571;
Special Conditions: Airbus Helicopters conditions for this system, and their 27.602; 27.661; 27.663; 27.695; 27.723;
Model AS350B2 and AS350B3 effect on the continued safe flight and 27.725; 27.727; 27.737; 27.751; 27.753;
Helicopters; Installation of Garmin landing of the helicopter, are more 27.801(b)(d); 27.927(c); 27.1041;
International, Inc., Autopilot System severe than those envisioned by the 27.1043; 27.1045; 27.1301; 27.1501;
AGENCY: Federal Aviation present rules. The present 14 CFR 27.1519; 27.1529; 27.1581; 27.1583;
Administration (FAA), DOT. 27.1309(b) and (c) regulations do not 27.1585; 27.1587; 27.1589.
ACTION: Final special conditions. adequately address the safety For AS350B3 aircraft incorporating
requirements for systems whose failures mod. OP–4605 (installation of a fuel
SUMMARY: These special conditions are could result in ‘‘catastrophic’’ or system improving crashworthiness), 14
issued for Airbus Helicopters Model ‘‘hazardous/severe-major’’ failure CFR 27.561(c) at Amendment 27–32
AS350B2 and AS350B3 helicopters. conditions, or for complex systems replaces the same requirement from the
These helicopters as modified by whose failures could result in ‘‘major’’ certification basis above for the
Garmin International, Inc., (Garmin) failure conditions. When these rules following elements of the fuel tank
will have a novel or unusual design were promulgated, it was not lower structure affected by this
feature associated with the Garmin envisioned that a normal category modification: cradles, longitudinal
Flight Control (GFC) 600H autopilot rotorcraft would use systems that are beams, X-stops and rods.
with stability and control augmentation complex or whose failure could result in Additionally, Garmin must comply
system (AP/SCAS). The applicable ‘‘catastrophic’’ or ‘‘hazardous/severe- with the equivalent level of safety
airworthiness regulations do not contain major’’ effects on the rotorcraft. This is findings, exemptions, and special
adequate or appropriate safety standards particularly true with the application of conditions prescribed by the
for this design feature. These special new technology, new application of Administrator as part of the certification
conditions contain the additional safety standard technology, or other basis.
standards that the Administrator applications not envisioned by the rule The Administrator has determined the
considers necessary to establish a level that affect safety. The Garmin AP/SCAS applicable airworthiness regulations
of safety equivalent to that established controls rotorcraft flight control (that is, 14 CFR part 27), as they pertain
by the existing airworthiness standards. surfaces. Possible failure modes to this STC, do not contain adequate or
DATES: The effective date of these exhibited by this system could result in appropriate safety standards for the
special conditions is April 13, 2018. a catastrophic event. Airbus Helicopters Model AS350B2 and
FOR FURTHER INFORMATION CONTACT: AS350B3 helicopters because of a novel
Type Certification Basis or unusual design feature. Therefore, we
George Harrum, Aerospace Engineer,
FAA, Rotorcraft Standards Branch, Under 14 CFR 21.101 and 21.115, propose to prescribe these special
Policy and Innovations Division, 10101 Garmin must show that the Airbus conditions under § 21.16.
Hillwood Pkwy., Fort Worth, TX 76177; Helicopters Model AS350B2 and Special conditions are initially
telephone (817) 222–4087; email AS350B3 helicopters, as changed, applicable to the model for which they
George.Harrum@faa.gov. continue to meet the applicable are issued. Should the applicant apply
SUPPLEMENTARY INFORMATION: provisions of the regulations for an STC to change any other model
incorporated by reference in Type included on the same type certificate to
Background Certificate No. H9EU or the applicable incorporate the same or similar novel or
daltland on DSKBBV9HB2PROD with RULES

On October 10, 2016, Garmin applied regulations in effect on the date of unusual design feature, the special
for a supplemental type certificate (STC) application for the change. The conditions would also apply to the other
to install a GFC 600H AP/SCAS in regulations incorporated by reference in model under § 21.101.
Airbus Helicopters Model AS350B2 and the type certificate are commonly In addition to the applicable
AS350B3 helicopters. The Model referred to as the ‘‘original type airworthiness regulations and special
AS350B2 and AS350B3 helicopters are certification basis.’’ The regulations conditions, Garmin must show that the

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15946 Federal Register / Vol. 83, No. 72 / Friday, April 13, 2018 / Rules and Regulations

Airbus Helicopters Model AS350B2 and within the defined design integrity (2) The occurrence of any hazardous
AS350B3 helicopters, as changed, requirements. failure condition is extremely remote;
comply with the noise certification and
Comments
requirements of 14 CFR part 36. (3) The occurrence of any major
The FAA issues special conditions, as No comments were received in failure condition is remote.
defined in 14 CFR 11.19, in accordance response to the Notice of proposed (c) Information concerning an unsafe
with § 11.38 and they become part of the special conditions No. 27–043–SC (82 system operating condition must be
type certification basis under § 21.101. FR 57685, December 7, 2017). The provided in a timely manner to the crew
closing date for comments was January to enable them to take appropriate
Novel or Unusual Design Features 22, 2018. Accordingly, the special corrective action. An appropriate alert
The Airbus Helicopters Model conditions are adopted as proposed. must be provided if immediate pilot
AS350B2 and AS350B3 helicopter Applicability awareness and immediate or subsequent
incorporates the following novel or corrective action is required. Systems
unusual design features: A GFC 600H As discussed above, these special and controls, including indications and
AP/SCAS. This GFC 600H AP/SCAS conditions are applicable to Airbus annunciations, must be designed to
performs non-critical control functions. Helicopters Model AS350B2 and minimize crew errors which could
The GFC 600H AP/SCAS is a two or AS350B3 helicopters. Should Garmin create additional hazards.
three axis system with the following apply at a later date for an STC to Issued in Fort Worth, Texas, on March 30,
novel functions: Limit cueing, level modify any other model included on 2018.
mode, and hover assist. Type Certificate Number H9EU to Jorge Castillo,
incorporate the same novel or unusual
Discussion Acting Manager, Rotorcraft Standards
design feature, these special conditions Branch, Policy and Innovation Division
These special conditions clarify the would apply to that model as well. Aircraft Certification Service.
requirement to perform a proper failure Conclusion [FR Doc. 2018–07655 Filed 4–12–18; 8:45 am]
analysis and also recognizes that the BILLING CODE 4910–13–P
severity of failures can vary. Current This action affects only certain novel
industry standards and practices or unusual design features on two
recognize five failure condition model helicopters. It is not a rule of
general applicability and affects only PENSION BENEFIT GUARANTY
categories: Catastrophic, Hazardous, CORPORATION
Major, Minor, and No-Safety Effect. the applicant who applied to the FAA
These special conditions address the for approval of these features.
29 CFR Part 4022
safety requirement for systems whose List of Subjects in 14 CFR Part 27
failures could result in catastrophic or Benefits Payable in Terminated Single-
hazardous/severe-major failure Aircraft, Aviation safety, Reporting Employer Plans; Interest Assumptions
conditions and for complex systems and recordkeeping requirements. for Paying Benefits
whose failures could result in major The authority citation for these
failure conditions. special conditions is as follows: AGENCY: Pension Benefit Guaranty
To comply with the provisions of the Corporation.
Authority: 49 U.S.C. 106(g), 40113, 44701,
special conditions, we require that 44702, 44704. ACTION: Final rule.
Garmin provide the FAA with a systems
The Special Conditions SUMMARY: This final rule amends the
safety assessment (SSA) for the final
Pension Benefit Guaranty Corporation’s
GFC 600H AP/SCAS installation Accordingly, pursuant to the
regulation on Benefits Payable in
configuration that adequately address authority delegated to me by the
Terminated Single-Employer Plans to
the safety objectives established by a Administrator, the following special
prescribe interest assumptions under
functional hazard assessment (FHA) and conditions are issued as part of the type
the regulation for valuation dates in
a preliminary system safety assessment certification basis for Airbus Helicopters
May 2018. The interest assumptions are
(PSSA), including the fault tree analysis Model AS350B2 and AS350B3
used for paying benefits under
(FTA). This ensures that all failure helicopters modified by Garmin
terminating single-employer plans
conditions and their resulting effects are International, Inc. (Garmin).
covered by the pension insurance
adequately addressed for the installed Instead of the requirements of 14 CFR
system administered by PBGC.
GFC 600H AP/SCAS. The SSA process, 27.1309(b) and (c), the following must
FHA, PSSA, and FTA are all parts of the be met for certification of the Garmin DATES: Effective May 1, 2018.
overall safety assessment process Flight Control 600H autopilot with FOR FURTHER INFORMATION CONTACT:
discussed in FAA Advisory Circular 27– stability and control augmentation Hilary Duke (duke.hilary@pbgc.gov),
1B, Certification of Normal Category system: Assistant General Counsel for
Rotorcraft, and Society of Automotive (a) The equipment and systems must Regulatory Affairs, Pension Benefit
Engineers document Aerospace be designed and installed so that any Guaranty Corporation, 1200 K Street
Recommended Practice 4761, equipment and system does not NW, Washington, DC 20005, 202–326–
Guidelines and Methods for Conducting adversely affect the safety of the 4400 ext. 3839. (TTY users may call the
the Safety Assessment Process on Civil rotorcraft or its occupants. Federal relay service toll-free at 1–800–
Airborne Systems and Equipment. (b) The rotorcraft systems and 877–8339 and ask to be connected to
These special conditions require that associated components considered 202–326–4400, ext. 3839.)
daltland on DSKBBV9HB2PROD with RULES

the GFC 600H AP/SCAS installed on separately and in relation to other SUPPLEMENTARY INFORMATION: PBGC’s
Airbus Helicopters Model AS350B2 and systems, must be designed and installed regulation on Benefits Payable in
Model AS350B3 helicopters meet the so that: Terminated Single-Employer Plans (29
requirements to adequately address the (1) The occurrence of any catastrophic CFR part 4022) prescribes actuarial
failure effects identified by the FHA, failure condition is extremely assumptions—including interest
and subsequently verified by the SSA, improbable; assumptions—for paying plan benefits

VerDate Sep<11>2014 16:22 Apr 12, 2018 Jkt 244001 PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 E:\FR\FM\13APR1.SGM 13APR1

Document Created: 2018-04-13 00:18:02
Document Modified: 2018-04-13 00:18:02

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 special conditions.
Dates		The effective date of these special conditions is April 13, 2018.
Contact		George Harrum, Aerospace Engineer, FAA, Rotorcraft Standards Branch, Policy and Innovations Division, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222-4087; email [email protected]
FR Citation		83 FR 15945
CFR Associated		Aircraft; Aviation Safety and Reporting and Recordkeeping Requirements

83 FR 15945 - Special Conditions: Airbus Helicopters Model AS350B2 and AS350B3 Helicopters; Installation of Garmin International, Inc., Autopilot System

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 83, Issue 72 (April 13, 2018)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration