AD 76-14-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | BOEING Model 747 Series Airplanes |
Unsafe Condition
Fuel leaks in dry bay areas between outboard reserve tanks and surge tanks, and engine struts, which could lead to fluid accumulation and potential fire hazards.
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Required Actions
Inspect dry bay areas for fuel leaks and verify clear drain paths; repair leaks exceeding limits before further flight. Inspect engine struts for fuel leakage and repair before flight. Inspect overwing fuel filler caps for approved part numbers and non-metallic lanyards, or provide approved corrective action. Report findings to FAA with serial number, total time, and leak details.
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Compliance Time
Within 20 days after the effective date of this Airworthiness Directive
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Affected Aircraft
All Boeing 747 series airplanes certificated in all categories, excluding 747-SP with active 2 and 3 reserve tanks and 747-200 with auxiliary fuel tanks.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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