AD 78-03-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Gulfstream Aerospace Corporation | G-1159 | Airworthiness Directives; GRUMMAN AMERICAN AVIATION CORPORATION Model G-1159 Airplanes |
Unsafe Condition
Main landing gear failures due to the installation of part number 1159SC-L202-11 or 1159SC-L202-13 side brace/actuating cylinders.
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Required Actions
Inspect main landing gear for part numbers 1159SC-L202-11 or 1159SC-L202-13 side brace/actuating cylinders before next flight. Replace P/N 1159SC-L202-13 actuators with modified 1159SC-L202-13A units within 10 landing gear cycles. Inspect P/N 1159SC-L202-11 actuators within 100 landing gear cycles and replace if defective. Remove and replace 1159SC-L202-11A or -13A actuators after 500 cycles. Alternate methods may be approved by FAA.
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Compliance Time
before next flight after the effective date of this A.D. (February 3, 1978) for inspection; within the next ten landing gear operating cycles for replacement of P/N 1159SC-L202-13; within the next 100 landing gear operating cycles for inspection of P/N 1159SC-L202-11; and after accumulating more than 500 actuator cycles for removal and replacement.
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Affected Aircraft
Grumman American Aviation Corporation Model G-1159 airplanes, all serial numbers certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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