AD 2008-21-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-400 | Airworthiness Directives; Boeing Model 747-400, 747-400D, and 747-400F Series Airplanes |
Unsafe Condition
Fuel system reviews conducted by the manufacturer identified a potential for a fire or explosion in the fuel tank and consequent loss of the airplane.
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Required Actions
Install an extension tube to the existing pump discharge port of the scavenge pump on the outboard side of the center fuel tank in the main fuel tank 2, in accordance with Boeing Special Attention Service Bulletin 747-28-2260.
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Compliance Time
Within 60 months after the effective date of this AD.
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Affected Aircraft
Boeing Model 747-400, 747-400D, and 747-400F series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 747-28-2260, dated March 13, 2008.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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