AD 2007-21-17
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
Landing gear radius rods suffering cracks starting in the flashline near the microswitch boss, which can result in loss of the normal hydraulic system and may lead to a landing gear collapse.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the main landing gear radius rod forged cylinder flashline initially within the next 3 months after the effective date and repetitively thereafter at intervals not to exceed 12 months. If cracks are found, replace the radius rod assembly with a serviceable unit before further flight. Upon reaching 8,000 total landings or within the next 12 months after the effective date, whichever occurs later, replace the radius rod assembly.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Upon reaching 8,000 total landings on the main landing gear radius rods or within the next 12 months after the effective date of this AD, whichever occurs later.
AI-generated summary from the source AD text. Verify against the official source before acting.
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, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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