AD 2011-11-01
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 on the main landing gear (MLG) fittings that embody modifications JM5218 or JM8003. This condition, if not detected and corrected, could lead to a MLG collapse on the ground or during landing, possibly resulting in a fuel tank rupture, consequent damage to the aeroplane or injury to the occupants.
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Required Actions
Eddy current inspect all the MLG leg pivot beam fastener bores for cracks. Replace the MLG fitting or repair any cracks found during inspections before further flight.
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Compliance Time
Within 2,000 flight cycles (landings) on the MLG after June 22, 2011, or upon accumulating 41,000 flight cycles (landings) on the MLG since first installation, whichever occurs later.
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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 main landing gear (MLG) fittings, part number (P/N) 1379133B1/B2/B3/B4 that incorporate Modifications JM5218 or JM8003, 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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