AD 2009-15-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 707 | Airworthiness Directives; Boeing Model 707 Airplanes and Model 720 and 720B Series Airplanes |
Unsafe Condition
Loss of fuel system suction feed capability, followed by total loss of pressure of the fuel feed system, which could result in multi-engine flameout, inability to restart the engines, and consequent forced landing of the airplane.
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Required Actions
Perform an operational test of the engine fuel suction feed of the fuel system, and perform all other related testing and corrective actions, as applicable, before further flight, in accordance with the Accomplishment Instructions of Boeing 707 Service Bulletin A3527, Revision 1. Repeat the operational test thereafter at intervals not to exceed 6,000 flight hours or 36 months, whichever occurs first.
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Compliance Time
Within 18 months after the effective date of this AD
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Affected Aircraft
All 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.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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