AD 47-14-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | S-307 | BOEING 307 Series Aircraft |
| aircraft | The Boeing Company | SA-307B | BOEING 307 Series Aircraft |
| aircraft | The Boeing Company | SA-307B-1 | BOEING 307 Series Aircraft |
Unsafe Condition
The keys in the main landing gear motors attachment to the retracting unit may not be heat treated to 200,000-220,000 pounds per square inch, leading to potential failure of the attachment.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the attachment of the main landing gear motors to the retracting unit. Test the keys to determine if they meet the 200,000-220,000 psi heat treatment specification. Replace keys that do not meet the specification.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to May 15, 1947
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Affected Aircraft
The Boeing Company S-307, SA-307B, SA-307B-1 aircraft models. Aircraft with an additional gearbox for the hand retracting drive are excluded.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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