AD 2000-23-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes Powered By Pratt & Whitney JT9D-3 and -7 Series Engines |
| engine | Pratt & Whitney | JT9D-3 and -7 Series | Airworthiness Directives; Boeing Model 747 Series Airplanes Powered By Pratt & Whitney JT9D-3 and -7 Series Engines |
Unsafe Condition
Loose fasteners of the hanger fittings and strut forward bulkhead of the forward engine mount, which could result in separation of the engine from the airplane.
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Required Actions
Conduct repetitive detailed visual inspections and torque checks of the hanger fittings and strut forward bulkhead of the forward engine mount and adjacent support structure. Perform corrective actions, including torque checks, rework of loose or damaged fittings, and replacement if damage exceeds allowable limits. Optional terminating action is provided for rework or replacement of fittings to eliminate repetitive inspections.
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Compliance Time
Before further flight for detected loose fasteners; within specified intervals for repetitive inspections and checks.
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Affected Aircraft
Boeing Model 747 series airplanes powered by Pratt & Whitney JT9D-3 and -7 series engines, excluding specific serial numbers 21048 and 20887, which are modified and powered by General Electric CF6-50 series engines.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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