AD 99-25-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dassault Aviation | Falcon 900EX | Airworthiness Directives; Dassault Model Mystere-Falcon 50 and 900 Series Airplanes, Falcon 900EX Series Airplanes, and Falcon 2000 Series Airplanes |
| aircraft | Dassault Aviation | FALCON 2000 | Airworthiness Directives; Dassault Model Mystere-Falcon 50 and 900 Series Airplanes, Falcon 900EX Series Airplanes, and Falcon 2000 Series Airplanes |
| aircraft | Dassault Aviation | FALCON 2000EX | Airworthiness Directives; Dassault Model Mystere-Falcon 50 and 900 Series Airplanes, Falcon 900EX Series Airplanes, and Falcon 2000 Series Airplanes |
| aircraft | Dassault Aviation | Mystere-Falcon 50 | Airworthiness Directives; Dassault Model Mystere-Falcon 50 and 900 Series Airplanes, Falcon 900EX Series Airplanes, and Falcon 2000 Series Airplanes |
| aircraft | Dassault Aviation | Mystere-Falcon 900 | Airworthiness Directives; Dassault Model Mystere-Falcon 50 and 900 Series Airplanes, Falcon 900EX Series Airplanes, and Falcon 2000 Series Airplanes |
Unsafe Condition
Excessive movement and consequent deformation of the hinge pin assemblies of the rear horizontal stabilizer could result in flutter and possible failure of the rear horizontal stabilizer.
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Required Actions
Revise the Airplane Flight Manual to provide stall warning instructions. Conduct repetitive inspections of the hinge pin assemblies to detect discrepancies and perform corrective actions if needed. Replace hinge pin assemblies with improved parts for certain airplanes.
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Compliance Time
Within 300 flight hours or 6 months after the effective date, whichever occurs first, with extended initial inspection threshold to 3,750 total flight cycles.
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Affected Aircraft
Dassault Model Mystere-Falcon 50 and 900 series, Falcon 900EX series, and Falcon 2000 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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