AD 2010-08-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; British Aerospace Regional Aircraft Model HP.137 Jetstream Mk.1, Jetstream Series 200, Jetstream Series 3101, and Jetstream Model 3201 Airplanes |
Unsafe Condition
Cracks have been found in the NLG steering jack piston rod adjacent to the eye-end. This was caused by excessive torque which had been applied to the eye-end during assembly of the unit. Severe cracking, if not detected and corrected, can cause the jack to fail during operation, which may lead to loss of directional control of the aeroplane during critical phases of take-off and landing.
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Required Actions
Inspect the NLG steering jack piston rod for cracks adjacent to the eye-end. Measure the release torque of the piston rod end fitting to determine a new safe life for individual units. Perform a revised calculation to establish the safe life of NLG steering jack pistons, as specified in the referenced service bulletins.
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Compliance Time
Within 12 months of the effective date of this AD.
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Affected Aircraft
British Aerospace Regional Aircraft Model HP.137 Jetstream Mk.1, Jetstream Series 200, Jetstream Series 3101, and Jetstream Model 3201 airplanes, all serial numbers, equipped with steering jack part number (P/N) 6182-2, P/N 6182-3, or P/N 6182-4, and certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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