AD 79-05-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-200B Series | BOEING Model 747-200 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | BOEING Model 747-200 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | BOEING Model 747-200 Series Airplanes |
Unsafe Condition
Failure of auxiliary fuel tanks Number 1 and Number 4 could result in fuel leakage and fire hazard.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Discontinue immediately the use of auxiliary fuel tanks Number 1 and Number 4; drain fuel from those tanks; and open and collar the associated tank pump circuit breakers.
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Compliance Time
Effective March 15, 1979
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Affected Aircraft
Boeing 747-200 series airplanes, Serial Numbers 20237, 20238, 20239, 20556, 20557, 21054, 21140, 21189, 21190, and 21237, equipped with auxiliary fuel tanks Number 1 and Number 4.
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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