AD 50-13-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kelowna Flightcraft R & D Ltd. | 240 Series | CONVAIR Model 240 Aircraft |
Unsafe Condition
Failures of the wing portion of the aileron hinge brackets and bracket supports due to excessive lateral vibration of the ailerons during engine operation between 1,000 to 1,200 r.p.m. in aircraft with Hamilton Standard propellers.
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Required Actions
Inspect aileron hinge brackets and supports with a 10-power glass for fatigue cracking around rivet holes and at bracket extensions. Repair or replace failed parts before next flight. By January 1, 1951, install steel brackets and measures to increase lateral rigidity of wing portion of aileron hinges.
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Compliance Time
Compliance required as indicated. Part A at every No. 2 operation until Part B is done. Part B by January 1, 1951.
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Affected Aircraft
Convair Model 240 Series aircraft with Hamilton Standard propellers.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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