Flight Controls - Inboard Flap Yoke Fittings Airworthiness Limitations Section - Revision
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Gulfstream GVII-G600 airplanes with serial numbers 73001 through 73051 must revise the existing Airworthiness Limitations Section within 30 days of August 24, 2023, to include the 4,000 flight cycle life limit for the specified inboard flap yoke fittings. They should update their Instructions for Continued Airworthiness or inspection programs accordingly. Requests for alternative methods of compliance can be submitted to the FAA's East Certification Branch.
Summary
The Federal Aviation Administration's Airworthiness Directive 2023-14-08 addresses certain Gulfstream Aerospace Corporation Model GVII-G600 airplanes. This directive introduces a life limit for the inboard flap actuator yoke fittings to enhance safety by preventing operation beyond their fatigue life. The affected parts are the left-hand P/N 73P5755033M005 and right-hand P/N 73P5755033M006 flap yoke fittings.
What changed
This new airworthiness directive requires revising the Airworthiness Limitations Section (ALS) of the Gulfstream GVII-G600 to establish a life limit of 4,000 flight cycles for the inboard flap yoke fittings. It is based on updated damage tolerance analyses and informed by a related failure in the GVII-G500 model, although the GVII-G600 has distinct design features. The directive mandates incorporation of these ALS revisions within 30 days of its effective date.
Why it matters
This directive is critical for operators and maintenance organizations to prevent potential flap actuator failures that could cause flaps to jam or become asymmetrical, risking loss of airplane control. Compliance ensures continued airworthiness by addressing fatigue-related risks in key flight control components. It also clarifies that the GVII-G600 flap yoke design is robust but requires life limits to maintain safety margins.
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