AD 2013-09-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Slingsby Sailplanes Ltd. Sailplanes |
Unsafe Condition
Glue joint failure on a starboard wing caused by water entering the area of the airbrake box, resulting in delamination and corrosion in the area of the aluminum alloy spar booms and the wing attach fittings.
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Required Actions
Inspect the aluminum alloy spar booms and the wing attach fittings for delamination or corrosion damage using the specified technical instructions. If any corrosion or delamination damage is found, further actions as outlined in the referenced technical instructions must be taken.
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Compliance Time
Within 6 calendar months after December 14, 1998.
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Affected Aircraft
Slingsby Sailplanes Ltd. Models Dart T.51, Dart T.51/17, and Dart T.51/17R sailplanes, all serial numbers, equipped with aluminum alloy spar booms and certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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