AD 99-21-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | ATP | Airworthiness Directives; British Aerospace BAe Model ATP Airplanes |
Unsafe Condition
Failure of the weight on wheels microswitch harness subassembly could result in a nose wheel shimmy, leading to nose landing gear collapse during takeoff or landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the weight on wheels microswitch harness subassembly with a new one within 4 years after initial installation or 3 months after the effective date of this AD, whichever is later. Repeat replacement every 4 years thereafter following British Aerospace Service Bulletin ATP-32-93, Revision 1.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 3 months after November 12, 1999, or 4 years after initial installation, whichever is later
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Affected Aircraft
BAe Model ATP airplanes, constructor’s numbers 2002 through 2063 inclusive
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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