Landing Gear - Nose Wheel Steering Servo Valve Manifold - Replacement / Aeroplane Flight Manual - Revision
- Published
- Effective
- Deadline
- Replaces
- 2020-12-06
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must replace the nose wheel steering servo valve manifold, revise the Airplane Flight Manual with the corrected document reference, inspect records for any un-commanded nose wheel steering incidents, and report findings to the FAA. The AFM revision must be incorporated within 30 days after the effective date of the original AD (July 20, 2020), and this AD is effective February 24, 2022.
Summary
The FAA Airworthiness Directive 2022-02-15 is a final rule addressing all Gulfstream Aerospace Corporation Model G-IV airplanes. It mandates the replacement of the nose wheel steering servo valve manifold and the incorporation of revised operating procedures into the Airplane Flight Manual to prevent un-commanded nose wheel steering turns caused by moisture freezing in the servo valve. This directive corrects a typographical error in the previously issued AD 2020-12-06 regarding the citation of the Airplane Flight Manual document.
What changed
This AD supersedes AD 2020-12-06 by retaining all its required actions but corrects the citation of the Airplane Flight Manual document number from “FAC-AC-G400-OPS-0001” to the correct “GAC-AC-G400-OPS-0001.” No new actions are introduced beyond those in the original AD, but the correction ensures proper compliance with the manual revision requirements.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk involving un-commanded nose wheel steering turns during touchdown, which could lead to a lateral runway departure. Operators and maintenance teams must ensure compliance to maintain aircraft safety and regulatory adherence. Accurate documentation and manual references are essential for proper maintenance and operational procedures.
More for Gulfstream Aerospace Corporation GIV
All 6- EASA AD US-2023-08-03Flight Controls - Ground Spoiler Actuator Hydraulic Hose and Associated Fittings - ReplacementMay 22, 2023
- EASA AD US-2020-12-06SUPERSEDED BY FAA AD 2022-02-15Jun 16, 2020
- EASA AD US-2019-20-08Time Limits / Maintenance Checks - Airworthiness Limitations Section - AmendmentDec 13, 2019
- EASA AD US-2018-09-04[Correction] Landing Gear - Main Landing Gear Actuator Attachment Fitting - Inspection / Maintenance Program RevisionJun 12, 2018
- EASA AD US-2017-26-05
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