AD 89-06-05 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dassault Aviation | Mystere-Falcon 50 | Airworthiness Directives; AVIONS MARCEL DASSAULT- BREGUET AVIATION (AMD-BA) Model Mystere Falcon 50 and 900 Series Airplanes |
| aircraft | Dassault Aviation | Mystere-Falcon 900 | Airworthiness Directives; AVIONS MARCEL DASSAULT- BREGUET AVIATION (AMD-BA) Model Mystere Falcon 50 and 900 Series Airplanes |
Unsafe Condition
Inability to open the main landing gear (MLG) door for MLG emergency extension due to a broken or damaged MLG door emergency unlocking pin.
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Required Actions
Verify the integrity of the MLG door emergency unlocking system by operating the manual opening system as per AMD-BA manuals. Replace broken or damaged unlocking pins with serviceable ones prior to further flight. Modify the emergency release mechanism per AMD-BA Service Bulletins within specified intervals. Repeat inspections at intervals not exceeding 50 landings after certain conditions.
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Compliance Time
Prior to the accumulation of 1,000 landings on the MLG door emergency unlocking pin, or within 7 days after March 24, 1989, whichever occurs later. For modifications, comply prior to 2,000 landings or within 120 days after January 12, 1990, whichever is later.
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Affected Aircraft
Dassault Aviation Model Mystere-Falcon 50 and 900 series airplanes listed in AMD-BA Service Bulletins F-50-208, Revision 1, and F-900-52, Revision 1, dated July 25, 1989.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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