AD Amdt-39-11432
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737-100 | Airworthiness Directives; Boeing Model 737-100, -200, -300, -400, and -500 Series Airplanes |
Unsafe Condition
Failure of the airplane battery and a certain diode of the Generator Control Units (GCU) could lead to loss of all electrical power, resulting in the inability to continue safe flight and landing.
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Required Actions
Replace the airplane battery with a new or reconditioned battery. Replace the battery charger with a new or serviceable battery charger. Perform repetitive tests on a certain diode of the Generator Control Units (GCU) to determine its condition. Take corrective actions if necessary.
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Affected Aircraft
All Boeing Model 737-100, -200, -300, -400, and -500 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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