AD 47-10-36
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Aircraft Corporation | 49-46 | LOCKHEED Model 49 |
Unsafe Condition
Loose rivets between the inboard and outboard nacelle attach angles can lead to structural failure of the leading edge lower skin attachment to the front beam.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect rivets for looseness every 200 hours of operation. Add stiffener to lower surface between Stations 287 and 299, replace 1/8-inch rivets with 5/32-inch rivets between Stations 287 and outboard nacelle, and install six 10-32 screws at Stations 263, 287, and 312.
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Compliance Time
200 hours of operation
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Affected Aircraft
Lockheed Aircraft Corporation Model 49 serial numbers up to and including 2088.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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