Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

[Federal Register Volume 80, Number 196 (Friday, October 9, 2015)]
[Rules and Regulations]
[Pages 61088-61091]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-25495]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-0677; Directorate Identifier 2013-NM-244-AD; 
Amendment 39-18289; AD 2015-20-10]
RIN 2120-AA64


Airworthiness Directives; Gulfstream Aerospace Corporation 
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for all 
Gulfstream Aerospace Corporation Model GVI airplanes. This AD was 
prompted by reports of corrosion on in-service air non-return valves. 
This AD requires a revision to the Emergency Procedures section of the 
airplane flight manual (AFM). This AD also requires a revision to the 
maintenance or inspection program, as applicable, to incorporate 
airworthiness limitations for the high pressure (HP) Stage 5 air non-
return valves. We are issuing this AD to ensure the flightcrew is 
provided with

[[Page 61089]]

procedures to mitigate the risks associated with failure of the HP 
Stage 5 air non-return valve. Failure of the HP Stage 5 air non-return 
valve in the open position could result in engine instability and 
uncommanded in-flight shutdown.

DATES: This AD is effective November 13, 2015.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of November 13, 
2015.

ADDRESSES: For service information identified in this AD, contact 
Gulfstream Aerospace Corporation, Technical Publications Dept., P.O. 
Box 2206, Savannah, GA 31402-2206; telephone 800-810-4853; fax 912-965-
3520; email [email protected]; Internet http://www.gulfstream.com/product_support/technical_pubs/pubs/index.htm. You may view this 
service information at the FAA, Transport Airplane Directorate, 1601 
Lind Avenue SW., Renton, WA. For information on the availability of 
this material at the FAA, call 425-227-1221. It is also available on 
the Internet at http://www.regulations.gov by searching for and 
locating Docket No. FAA-2015-0677.

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-2015-
0677; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this AD, the regulatory evaluation, any comments received, and 
other information. The address for the Docket Office (phone: 800-647-
5527) is Docket Management Facility, 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: Darby Mirocha, Continued Operational 
Safety and Certificate Management, ACE-102A, FAA, Atlanta Aircraft 
Certification Office (ACO), 1701 Columbia Avenue, College Park, GA 
30337; phone: 404-474-5573; fax: 404-474-5606; email: 
[email protected].

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to all Gulfstream Aerospace 
Corporation Model GVI airplanes. The NPRM published in the Federal 
Register on March 31, 2015 (80 FR 17005). The NPRM was prompted by 
reports of corrosion on in-service air non-return valves. Failure of 
the HP Stage 5 air non-return valve in the open position could result 
in engine instability and uncommanded in-flight shutdown. The NPRM 
proposed to require a revision to the Emergency Procedures section of 
the AFM and a revision to the maintenance or inspection program, as 
applicable, to incorporate airworthiness limitations for the HP Stage 5 
air non-return valves. We are issuing this AD to ensure the flightcrew 
is provided with procedures to mitigate the risks associated with 
failure of the HP Stage 5 air non-return valve.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We received no comments on the NPRM (80 FR 17005, March 31, 
2015) or on the determination of the cost to the public.

Conclusion

    We reviewed the relevant data and determined that air safety and 
the public interest require adopting this AD as proposed except for 
minor editorial changes. We have determined that these minor changes:
    <bullet> Are consistent with the intent that was proposed in the 
NPRM (80 FR 17005, March 31, 2015) for correcting the unsafe condition; 
and
    <bullet> Do not add any additional burden upon the public than was 
already proposed in the (NPRM 80 FR 17005, March 31, 2015).

Interim Action

    We consider this AD interim action. The manufacturer is currently 
developing a modification that will positively address the unsafe 
condition identified in this AD. Once this modification is developed, 
approved, and available, we might consider additional rulemaking.

Related Service Information Under 1 CFR Part 51

    We reviewed Section 04-08-20, Normal Airstart--Automatic; Section 
04-08-30, Manual Airstart--Starter Assist; and Section 04-08-40, Manual 
Airstart--Windmilling; of Chapter 04, Emergency Procedures, of the 
Gulfstream GVI (G650) AFM, Document Number GAC-AC-G650-OPS-0001, 
Revision 5, dated August 12, 2013. This service information describes 
revised procedures for in-flight engine restart and operating 
procedures.
    In addition, we reviewed Section 05-10-10, Airworthiness 
Limitations, of Chapter 05, Time Limits/Maintenance Checks, of the 
Gulfstream GVI (G650) Maintenance Manual (MM), Revision 4, dated 
September 30, 2013. This service information adds an airworthiness 
limitation for the HP Stage 5 air non-return valve.
    This service information is reasonably available because the 
interested parties have access to it through their normal course of 
business or by the means identified in the ADDRESSES section of this 
AD.

Costs of Compliance

    We estimate that this AD affects 52 airplanes of U.S. registry.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
               Action                         Labor cost            Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
AFM revision.......................  1 work-hour x $85 per hour               $0             $85          $4,420
                                      = $85.
MM revision........................  1 work-hour x $85 per hour                0              85           4,420
                                      = $85.
----------------------------------------------------------------------------------------------------------------

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

[[Page 61090]]

promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    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, 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.

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):

2015-20-10 Gulfstream Aerospace Corporation: Amendment 39-18289; 
Docket No. FAA-2015-0677; Directorate Identifier 2013-NM-244-AD.

(a) Effective Date

    This AD is effective November 13, 2015.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all Gulfstream Aerospace Corporation Model 
GVI airplanes, certificated in any category.

(d) Subject

    Air Transport Association (ATA) of America Code 36, Pneumatic.

(e) Unsafe Condition

    This AD was prompted by reports of corrosion on in-service air 
non-return valves. We are issuing this AD to ensure the flightcrew 
is provided with procedures to mitigate the risks associated with 
failure of the high pressure (HP) Stage 5 air non-return valve. 
Failure of the HP Stage 5 air non-return valve in the open position 
could result in engine instability and uncommanded in-flight 
shutdown.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Revision of the Airplane Flight Manual (AFM)

    Within 30 days after the effective date of this AD: Revise the 
Emergency Procedures section of the AFM by inserting Section 04-08-
20, Normal Airstart--Automatic; Section 04-08-30, Manual Airstart--
Starter Assist; and Section 04-08-40, Manual Airstart--Windmilling; 
of Chapter 04, Emergency Procedures; of the Gulfstream GVI (G650) 
AFM, Document Number GAC-AC-G650-OPS-0001, Revision 5, dated August 
12, 2013.

(h) Revision of Maintenance or Inspection Program

    Within 30 days after the effective date of this AD: Revise the 
airplane maintenance manual or inspection program, as applicable, by 
incorporating the requirement for the HP Stage 5 air non-return 
valve from Section 05-10-10, Airworthiness Limitations, of Chapter 
05, Time Limits/Maintenance Checks, of the Gulfstream GVI (G650) 
Maintenance Manual (MM), Revision 4, dated September 30, 2013. The 
initial compliance time for replacement of the HP Stage 5 air non-
return valve is at the applicable time specified in Section 05-10-
10, Airworthiness Limitations, of Chapter 05, Time Limits/
Maintenance Checks, of the Gulfstream GVI (G650) MM, Revision 4, 
dated September 30, 2013, or within 30 days after the effective date 
of this AD, whichever occurs later.

(i) No Alternative Actions or Intervals

    After the maintenance or inspection program has been revised, as 
required by paragraph (h) of this AD, no alternative actions (e.g., 
inspections) or intervals may be used unless the actions or 
intervals are approved as an alternative method of compliance in 
accordance with the procedures specified in paragraph (j) of this 
AD.

(j) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Atlanta Aircraft Certification Office (ACO), 
FAA, has the authority to approve AMOCs for this AD, if requested 
using the procedures found in 14 CFR 39.19. In accordance with 14 
CFR 39.19, send your request to your principal inspector or local 
Flight Standards District Office, as appropriate. If sending 
information directly to the manager of the ACO, send it to the 
attention of the person identified in paragraph (k) of this AD.
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.

(k) Related Information

    For more information about this AD, contact Darby Mirocha, 
Continued Operational Safety and Certificate Management, ACE-102A, 
FAA, Atlanta Aircraft Certification Office (ACO), 1701 Columbia 
Avenue, College Park, GA 30337; phone: 404-474-5573; fax: 404-474-
5606; email: [email protected].

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) Section 04-08-20, Normal Airstart--Automatic, of Chapter 04, 
Emergency Procedures, of the Gulfstream GVI (G650) Airplane Flight 
Manual, Document Number GAC-AC-G650-OPS-0001, Revision 5, dated 
August 12, 2013.
    (ii) Section 04-08-30, Manual Airstart--Starter Assist, of 
Chapter 04, Emergency Procedures, of the Gulfstream GVI (G650) 
Airplane Flight Manual, Document Number GAC-AC-G650-OPS-0001, 
Revision 5, dated August 12, 2013.
    (iii) Section 04-08-40, Manual Airstart--Windmilling, of Chapter 
04, Emergency Procedures, of the Gulfstream GVI (G650) Airplane 
Flight Manual, Document Number GAC-AC-G650-OPS-0001, Revision 5, 
dated August 12, 2013.
    (iv) Section 05-10-10, Airworthiness Limitations, of Chapter 05, 
Time Limits/Maintenance Checks, of the Gulfstream GVI (G650) 
Maintenance Manual, Revision 4, dated September 30, 2013.
    (3) For service information identified in this AD, contact 
Gulfstream Aerospace Corporation, Technical Publications Dept., P.O. 
Box 2206, Savannah, GA 31402-2206; telephone 800-810-4853; fax 912-
965-3520; email [email protected]; Internet http://www.gulfstream.com/product_support/technical_pubs/pubs/index.htm.
    (4) You may view this service information at FAA, Transport 
Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For 
information on the availability of this material at the FAA, call 
425-227-1221.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.


[[Page 61091]]


    Issued in Renton, Washington, on September 30, 2015.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-25495 Filed 10-8-15; 8:45 am]
 BILLING CODE 4910-13-P

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