AD 2010-18-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | de Havilland | drawing | Airworthiness Directives; Robert E. Rust, Jr. Model DeHavilland DH.C1 Chipmunk 21, DH.C1 Chipmunk 22, and DH.C1 Chipmunk 22A Airplanes |
Unsafe Condition
Latch plate supplied under part number (P/N) C1-CF-1489 failing in service, not manufactured to the applicable de Havilland drawing. The unapproved latch plate can become separated or bent, resulting in rapid wear and failure, which could lead to an un-commanded retraction of the flaps and a stall during a landing approach.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the flap operating system to identify the P/N of the latch plate installed. If P/N C1-CF-1489 is installed, inspect to determine if it complies with the design standard. Replace the latch plate with one that complies with the design standard if an unapproved latch plate is found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours time-in-service (TIS) after October 7, 2010, or within 90 days after October 7, 2010, whichever occurs first.
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Affected Aircraft
Robert E. Rust, Jr. Models DeHavilland DH.C1 Chipmunk 21, DH.C1 Chipmunk 22, and DH.C1 Chipmunk 22A airplanes, all serial numbers, certificated in any category.
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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