AD 94-09-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | SAAB 340B | Airworthiness Directives; SAAB Aircraft AB (Formerly SAAB-SCANIA) Model SAAB 340B Series Airplanes |
Unsafe Condition
Electromagnetic interference (EMI) tests indicate that the actuator assemblies of certain fuel shut-off valves may fail to function after exposure to EMI, such as lightning or high intensity radiated fields, which could result in unchecked fuel leakage or fuel imbalance after fuel system failure.
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Required Actions
Replace the existing actuator assembly (P/N 130001C) on the engine left- and right-hand fuel shutoff valve, interconnect valve, crossfeed valve, and de-fuel shutoff valve with a new improved actuator assembly (P/N 130003N) per SAAB Service Bulletin SAAB 340-28-016. Perform a functional test of the modified valves once installed. Do not install fuel shutoff valve assemblies with P/N AV16B2117B-2 (SAAB P/N 9303149-002).
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Compliance Time
Within 6 months after the effective date of this AD
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Affected Aircraft
SAAB Aircraft AB Model SAAB 340B series airplanes; serial numbers 271, and 275 through 300, inclusive; certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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