AD 96-16-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | Airworthiness Directives; Boeing Model 727-100 and -200 Series Airplanes |
| aircraft | The Boeing Company | 727-200 Series | Airworthiness Directives; Boeing Model 727-100 and -200 Series Airplanes |
Unsafe Condition
The close proximity of a 28-volt wire to relays could cause chafing and short to power a DC relay (AN 3311-2), simultaneously energizing the hydraulic pump motor and control valve. Failure of an 115-volt AC relay could energize the hydraulic pump motor, producing pressure to unlock the main deck cargo door.
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Required Actions
Perform a one-time visual inspection of internal wires and electrical components in the control box, repair discrepancies, verify proper installation and restraint of wires, submit inspection results to FAA, revise AFM to impose operational limitations on circuit breakers, and modify control box wiring and components to prevent issues.
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Compliance Time
Effective August 27, 1996
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Affected Aircraft
Boeing Model 727-100 and -200 series airplanes modified with Supplemental Type Certificate SA1797SO.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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