AD 89-12-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
| aircraft | The Boeing Company | 747SP Series | Airworthiness Directives; BOEING Model 747-100, 747-200, 747-300, and 747-SP Series Airplanes |
Unsafe Condition
Lower wing surface fuel tank access door penetration due to impact from low energy engine and tire debris could create a fire hazard.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace specific inboard fuel tank access doors on left and right wings with doors having impact resistance equivalent to 2024-T3 aluminum 0.140-inch thick and fire resistance as defined in FAR Part 1. The first replacement (Nos. 544AB, 545AB, 644AB, 645AB) must be done within 8 months after the effective date. The second replacement (14 doors: seven on each wing as listed) must be done within 30 months after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 8 months after the effective date of this AD (first action) and within the next 30 months after the effective date of this AD (second action).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BOEING Model 747-100, 747-200, 747-300, and 747-SP series airplanes, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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