AD 2008-04-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 707 | Airworthiness Directives; Boeing Model 707 Airplanes, and Model 720 and 720B Series Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Boeing Model 707 Airplanes, and Model 720 and 720B Series Airplanes |
Unsafe Condition
Potential for ignition sources inside fuel tanks caused by latent failures, alterations, repairs, or maintenance actions, which could result in fuel tank explosions and consequent loss of the airplane.
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Required Actions
Revise the FAA-approved maintenance program by incorporating new airworthiness limitations (AWLs) for fuel tank systems. Perform initial repetitive AWL inspections to phase in those inspections. Repair any issues found during inspections if necessary.
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Compliance Time
Before further flight
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Affected Aircraft
All Boeing Model 707 airplanes, and Model 720 and 720B series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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