AD 70-11-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747-100 Series Airplanes |
Unsafe Condition
Cracking in the wing trailing edge aft flap support arms
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the wing trailing edge aft flap support arms for cracks in accordance with Boeing Alert Service Bulletin No. 27-2024. If a crack is found, replace the part before further flight if the crack is 0.4 inches or greater; otherwise, continue service with inspections every 20 flights. Repetitive inspections may be discontinued after replacing with improved support arms per Boeing Service Bulletin No. 27-7024.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 40 flights after the effective date of this AD on aircraft having 960 or more flights, and thereafter at intervals not to exceed 40 flights from the last inspection
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Affected Aircraft
Boeing Model 747-100 Series airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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