AD 2005-11-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dassault | Mystere-Falcon 50 and 900 | Airworthiness Directives; Dassault Model Mystere-Falcon 50 and 900 Series Airplanes, and Model Falcon 2000 and 900EX Series Airplanes |
Unsafe Condition
Erroneous cockpit display of ground speed, wind velocity and direction, flight path angle, and true track angle when using certain autopilot and/or flight management system functions.
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Required Actions
Operators must revise the Airplane Flight Manual to prohibit the use of certain functions depending on GPS status. For airplanes with GPS deactivated, install a deactivation locking collar on certain circuit breakers. Modify the wiring of the global positioning/inertial reference system for certain airplanes.
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Compliance Time
Before further flight
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Affected Aircraft
Dassault Model Mystere-Falcon 50 and 900 Series Airplanes, and Model Falcon 2000 and 900EX Series Airplanes equipped with the specified global positioning/inertial reference system (GP/IRS).
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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