AD 2012-05-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. |
Unsafe Condition
An un-chamfered leaf spring in the friction brake may contact the power lever latch when the friction adjusting knob is fully loosened, allowing the power levers to pass through the flight idle gate without lifting the triggers, potentially resulting in both engines inadvertently operating in beta mode during flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the upper edge of each leaf spring for chamfer, rework if necessary, and install a new friction brake nut with larger shoulders.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 120 flight hours after the effective date of this AD.
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Affected Aircraft
Bombardier, Inc. Model DHC-8-102, -103, and -106 airplanes, certificated in any category, serial numbers 003 through 039 inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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