AD 2005-08-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 707 | Airworthiness Directives; Boeing Model 707 Airplanes and Model 720 and 720B Series Airplanes |
Unsafe Condition
Cracking of the front spar fitting of the inboard and outboard nacelle struts, which could result in reduced structural integrity of the engine nacelle and consequent separation of an engine from the airplane.
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Required Actions
Perform a detailed inspection for cracking of the front spar fitting of the inboard and outboard nacelles according to Boeing Alert Service Bulletin A3514. Repeat the inspection at intervals not to exceed 700 flight hours. Replace any cracked fitting with a new fitting before further flight.
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Compliance Time
Within 18 months after the effective date of this AD or prior to the accumulation of 3,500 total flight hours, whichever occurs later.
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Affected Aircraft
Boeing Model 707-100 long body, -200, -100B long body, and -100B short body series airplanes; Model 707-300, -300B, -300C, and -400 series airplanes; and Model 720 and 720B series airplanes, certificated in any category, having line numbers 1 through 1012 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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