AD 2007-07-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Airplanes |
Unsafe Condition
Sealant deteriorating on the outside of the center wing fuel tank, potentially caused by excess heat from leaking trim air diffuser ducts or sidewall riser duct assemblies (TADDs), which could lead to fuel or fuel vapor leakage into areas with ignition sources, resulting in a fire or explosion.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct repetitive tests to detect hot air leaking from TADDs, perform related investigative actions, and take corrective actions if necessary. An optional terminating action for the repetitive tests is also provided.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747 airplanes with certain configurations and serial numbers as specified in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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