AD 2023-02-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc., Airplanes |
Unsafe Condition
The failure of the springs in the pitch trim switch, which, if not corrected, could result in the airplane pitching nose down when actually commanded nose up, resulting in reduced controllability of the airplane and high control forces.
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Required Actions
Replace the affected pitch trim switches with re-designed pitch trim switches that have reliable springs. Verify the serial numbers of certain pitch trim switches, and replace affected pitch trim switches with new ones in the pilot and co-pilot control wheels.
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Compliance Time
Before further flight
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Affected Aircraft
All Bombardier, Inc., Model BD-100-1A10 airplanes, S/Ns 20003 to 20936.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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