AD 2001-22-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737-600 | Airworthiness Directives; Boeing Model 737-600, -700, and -800 Series Airplanes |
Unsafe Condition
Loss of electrical power from engine-driven generators or auxiliary power unit due to overheating, melting, and subsequent failure of power feeder terminals at the power distribution panels (PDPs).
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Required Actions
Inspect power distribution panels (PDPs) to verify proper installation of power feeder terminals and associated hardware, and perform corrective actions if necessary. Perform repetitive torque checks of terminal attachment screws. Replace PDP rigid bus assembly with a new assembly having the same part number as the removed part. Optional terminating action: Replace existing PDP rigid bus assemblies with new, improved assemblies to terminate repetitive torque checks and replacements.
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Compliance Time
Within 1,000 flight hours after every eighth torque check for repetitive replacement of PDP rigid bus assembly.
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Affected Aircraft
Boeing Model 737-600, -700, and -800 series airplanes equipped with PDPs bearing any of the Boeing part numbers in the 'Existing Part Number' column of the table under paragraph 2.E., 'Existing Parts Accountability,' of Boeing Service Bulletin 737-24-1128.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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