AD 64-15-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-300B Series | BOEING Models 707-300B and 707-300C Series Aircraft |
| aircraft | The Boeing Company | 707-300C Series | BOEING Models 707-300B and 707-300C Series Aircraft |
Unsafe Condition
Cracks have occurred in the flange of the left and right fillet flap drive support assembly, P/N's 65-22244-1 and -2, originating in the lower inboard flange area.
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Required Actions
Within 30 hours' time in service after the effective date, inspect the upper and lower inboard and outboard flanges of the fillet flap drive screw support assemblies for cracks. Repairs must be made before further flight using Boeing Service Bulletin 1962(R-1), FAA-approved methods, or stop drilling and shimming as specified. Daily inspections are required for stop-drilled cracks to check for growth beyond the stop drill hole, with permanent repairs needed within 125 hours' time in service after crack detection.
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Compliance Time
Within 30 hours' time in service after the effective date of this AD, unless already accomplished within the last 100 hours' time in service, and thereafter at periods not to exceed 130 hours' time in service from the last inspection.
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Affected Aircraft
Boeing Models 707-300B and 707-300C Series Aircraft listed in Boeing Service Bulletin No. 1962(R-1).
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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