AD 2011-01-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Various | Airworthiness Directives; The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes |
Unsafe Condition
Potential of ignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.
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Required Actions
Install fuel level float and pressure switch in-line fuses on the wing forward spars and forward and aft auxiliary fuel tanks, depending on the airplane configuration, and perform applicable wiring changes.
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Compliance Time
Within 60 months after the effective date of this AD.
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Affected Aircraft
The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 airplanes; certificated in any category; as identified in Boeing Service Bulletin MD80-28-226, dated April 14, 2010, and subject to specific switch installation requirements per McDonnell Douglas MD-80 Service Bulletins 28-054 or 28-058 or production equivalent.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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