AD Amdt-39-16121
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company Model 727 | Airworthiness Directives; The Boeing Company Model 727 Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; The Boeing Company Model 727 Airplanes |
Unsafe Condition
Potential for ignition sources inside fuel tanks caused by latent failures, alterations, repairs, or maintenance actions, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revise the FAA-approved maintenance program by incorporating new airworthiness limitations (AWLs) for fuel tank systems. Conduct an initial inspection to phase in a certain repetitive AWL inspection, and repair if necessary. Clarify the intended effect of the AD on spare and on-airplane fuel tank system components regarding maintenance manuals and instructions for continued airworthiness.
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.
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Affected Aircraft
The Boeing Company Model 727 airplanes.
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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