Airworthiness Directives; Robert E. Rust, Jr. Model DeHavilland DH.C1 Chipmunk 21, DH.C1 Chipmunk 22, and DH.C1 Chipmunk 22A Airplanes
airworthiness · Rule · Final rule. · Published 2010-09-02 · Effective 2010-10-07 · 75 FR 53861
Document
Document number
2010-21741
Federal Register citation
75 FR 53861
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2010-09-02
Effective date
2010-10-07
FAA docket
Docket No. FAA-2010-0632
Abstract
We are adopting a new airworthiness directive (AD) for all Robert E. Rust, Jr. Models DeHavilland DH.C1 Chipmunk 21, DH.C1 Chipmunk 22, and DH.C1 Chipmunk 22A airplanes. This AD requires you to do a one-time inspection of the flap operating system for an unapproved latch plate design installation, with replacement as necessary. This AD results from a report of a latch plate failing in service that was not made in accordance with the applicable de Havilland drawing. We are issuing this AD to detect and correct an unauthorized latch plate design installation which could result in an un-commanded retraction of the flaps. This failure could lead to a stall during a landing approach.