AD Amdt-39-9876
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes Powered By Rolls Royce Model RB211 Series Engines |
Unsafe Condition
Cracking of the aft torque bulkhead at the number 1 and number 2 engine pylons could result in failure of the pylon and consequent separation of the engine from the wing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct a one-time inspection to detect cracks and corrosion of various areas at all four engine pylons and repair any cracked or corroded engine pylon.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 747 series airplanes powered by Rolls Royce Model RB211 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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