2022-02-15: Landing Gear System

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by: a. Removing Airworthiness Directive 2020-12-06, Amendment 39-21141 (85 FR 36143, June 15, 2020); and b. Adding the following new airworthiness directive: 2022-02-15 Gulfstream Aerospace Corporation: Amendment 39-21912; Docket No. FAA-2021-0881; Project Identifier AD-2020-01062-T. (a) Effective Date This airworthiness directive (AD) is effective February 24, 2022. (b) Affected ADs This AD replaces AD 2020-12-06, Amendment 39-21141 (85 FR 36143, June 15, 2020) (AD 2020-12-06). (c) Applicability This AD applies to all Gulfstream Aerospace Corporation Model G-IV airplanes, certificated in any category. (d) Subject Joint Aircraft System Component (JASC) Code 3200, Landing Gear System. (e) Unsafe Condition This AD was prompted by reports of un-commanded nose wheel steering turns. The FAA is issuing this AD to prevent moisture from entering the nose steering wheel servo valve, which could freeze and cause an un-commanded nose wheel steering position during touchdown. The unsafe condition, if not addressed, could result in a lateral runway departure. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Retained Airplane Flight Manual Revisions for Certain Airplanes This paragraph restates the requirements of paragraphs (g)(1) and (2) of AD 2020-12-06. Within 30 days after July 20, 2020 (the effective date of AD 2020-12-06), revise your airplane flight manual (AFM) by incorporating the revision applicable to your airplane configuration as listed in paragraphs (g)(1) and (2) of this AD: (1) Gulfstream IV Airplane Flight Manual, Gulfstream Aerospace Document Number GAC-AC-GIV-OPS-0001, Revision 52, dated October 30, 2017; or (2) Gulfstream G300 Airplane Flight Manual, Gulfstream Aerospace Document Number GAC-AC-G300-OPS-0001, Revision 20, dated October 30, 2017. (h) Correction to AFM Revision for Certain Airplanes Within 30 days after the effective date of this AD, revise your AFM by incorporating Gulfstream G400 Airplane Flight Manual, Gulfstream Aerospace Document Number GAC-AC-G400-OPS-0001, Revision 20, dated October 30, 2017, if applicable to your airplane configuration. (i) Retained Replacement of Nose Wheel Steering Servo Valve Manifold With No Changes This paragraph restates the requirements of paragraph (h) of AD 2020-12-06 with no changes. Within 36 months after July 20, 2020 (the effective date of AD 2020-12-06), replace the nose wheel steering servo valve manifold with nose wheel steering servo valve manifold part number 5100-11 or 5105-5 in accordance with the Accomplishment Instructions of the customer bulletin that applies to your airplane configuration as listed in paragraphs (i)(1) through (3) of this AD, except you are not required to comply with step H: (1) Gulfstream IV Customer Bulletin Number 244, dated March 12, 2018; (2) Gulfstream G300 Customer Bulletin 244, dated March 12, 2018; or (3) Gulfstream G400 Customer Bulletin 244, dated March 12, 2018. (j) Retained Records Inspection and Report of Results With No Changes This paragraph restates the requirements of paragraph (i) of AD 2020-12-06 with no changes. (1) Between 12 months and 24 months after the replacement of the nose wheel steering valve manifold assembly required in paragraph (i) of this AD, inspect all aircraft records for entries of an un-commanded nose wheel steering turn. (2) Within 10 days after the records inspection required in paragraph (j)(1) of this AD, report the results of the inspection, regardless of whether the inspection found any entries, to the FAA by either email: 9-ASO-ATLCOS-Reporting@faa.gov; or by mail: Attn: Continued Operational Safety, Atlanta ACO Branch, FAA, 1701 Columbia Avenue, College Park, GA 30337. The report must include as much of the information listed in paragraphs (j)(2)(i) through (vii) of this AD as is known about the event: (i) Date of records inspection; (ii) Date and time of all un-commanded occurrences (if any); (iii) Airplane serial number; (iv) Weather and runway conditions at the time of each occurrence; (v) Copy of the pilot's report of the occurrence (if available); (vi) Maintenance entry of the root cause of the un-commanded deflection (if available); and (vii) Any other information pertinent to the occurrence. (k) Alternative Methods of Compliance (AMOCs) (1) The Manager, Atlanta ACO Branch, 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 certification office, send it to the attention of the person identified in paragraph (l) 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. (l) Related Information For more information about this AD, contact Samuel Belete, Aviation Safety Engineer, Systems and Equipment Section, FAA, Atlanta ACO Branch, 1701 Columbia Avenue, College Park, GA 30337; phone: (404) 474-5580; fax: (404) 474-5606; email: samuel.belete@faa.gov. (m) 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. (3) The following service information was approved for IBR on July 20, 2020 (85 FR 36143, June 15, 2020). (i) Gulfstream IV Customer Bulletin Number 244, dated March 12, 2018. (ii) Gulfstream G300 Customer Bulletin 244, dated March 12, 2018. (iii) Gulfstream G400 Customer Bulletin 244, dated March 12, 2018. (iv) Gulfstream IV Airplane Flight Manual, Gulfstream Aerospace Document Number GAC-AC-GIV-OPS-0001, Revision 52, dated October 30, 2017. (v) Gulfstream G300 Airplane Flight Manual, Gulfstream Aerospace Document Number GAC-AC-G300-OPS-0001, Revision 20, dated October 30, 2017. (vi) Gulfstream G400 Airplane Flight Manual, Gulfstream Aerospace Document Number GAC-AC-G400-OPS-0001, Revision 20, dated October 30, 2017. (4) For service information identified in this AD, contact Gulfstream Aerospace Corporation, P.O. Box 2206, Savannah, GA 31402; phone: (800) 810-4853; email: pubs@gulfstream.com; website: https://www.gulfstream.com/en/customer-support/. (5) You may view this service information at FAA, Airworthiness Products Section, Operational Safety Branch, FAA, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call (817) 222-5110. (6) 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, email: fr.inspection@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html. Issued on January 13, 2022. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2022-00972 Filed 1-19-22; 8:45 am]BILLING CODE 4910-13-P