AD 2005-05-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-100 | Airworthiness Directives; Boeing Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, and -300 Series Airplanes; and Model 747SP and 747SR Series Airplanes; Equipped With Pratt and Whitney Model JT9D-3 or -7 (Except -70) Series Engines |
Unsafe Condition
Fatigue cracking of the web bulkhead at nacelle station 180, leading to loss of the load path of the bulkhead, which combined with the loss of the midspar load path, could result in in-flight separation of the engine and strut.
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Required Actions
Perform a detailed inspection to detect cracking of the aft and forward surfaces of the bulkhead web at nacelle station 180. If cracking is detected, repair it before further flight according to the service bulletin or an approved method. Repeat inspections at specified intervals.
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Compliance Time
Within 9 months after the effective date of this AD.
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Affected Aircraft
Boeing Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, and -300 series airplanes; and Model 747SP and 747SR series airplanes, equipped with Pratt and Whitney Model JT9D-3 or -7 (except -70) series engines.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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