AD 98-20-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | Jetstream Model 4101 | Airworthiness Directives; British Aerospace Model Jetstream 4101 Airplanes |
Unsafe Condition
Failure of hose assemblies in the fire extinguisher system of the engine nacelle due to cracks in the swaged ferrule caused during manufacture, which could prevent proper distribution of fire extinguishing agent during a fire.
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Required Actions
Perform a one-time detailed visual inspection of hose assemblies with part number 14191001-56 to determine label data. Replace any hose assemblies with label data matching specified labels in the service bulletin with new hose assemblies before accumulating 60 flight hours after inspection.
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Compliance Time
Within 30 days after the effective date of this AD, and prior to the accumulation of 60 flight hours following the inspection.
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Affected Aircraft
British Aerospace Model Jetstream 4101 airplanes, constructors numbers 41004 through 41100 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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