airworthiness · Rule · Final rule. · Published 2013-05-16 · Effective 2013-06-20 · 78 FR 28723
Document
Document number
2013-10794
Federal Register citation
78 FR 28723
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2013-05-16
Effective date
2013-06-20
FAA docket
Docket No. FAA-2013-0220
Abstract
We are superseding an existing airworthiness directive (AD) for all Slingsby Sailplanes Ltd. Models Dart T.51, Dart T.51/17, and Dart T.51/17R sailplanes equipped with aluminum alloy spar booms. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as an incident of glue joint failure on a starboard wing caused by water entering the area of the airbrake box that resulted in delamination and corrosion in the area of the aluminum alloy spar booms and the wing attach fittings. We are issuing this AD to require actions to address the unsafe condition on these products.