# SDR 2007FA0000377

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 26, 2007
- Submitted: April 27, 2007
- Operation: General aviation
- Aircraft: N718A
- Make and model: Lear 60LEAR
- Aircraft serial: 065
- Aircraft time: 4,200 hours, 2,797 cycles
- Engine: Wright R3350*
- System (JASC): [3232 · Landing Gear Door Actuator](https://openairdocs.org/jasc/3232)
- Part: Rod
- Condition: Failed
- Location: Actuator
- Component: Actuator, Garkenyon
- Component part number: 66000858
- Stage of operation: LD
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007FA0000377

## Discrepancy

WHEN LANDING GEAR WAS CYCLED DOWN, THE RT RED IB GEAR DOOR OPEN LIGHT WOULD NOT EXTINGUISH. GEAR DOWN LOCK LIGHTS WERE GREEN. NORMAL LANDING. INSPECTION REVEALED THAT THE ACTUATOR SHAFT HAD UNSCREWED FROM THE PISTON NOT ALLOWING THE DOOR TO CLOSE. FURTHER EXAMINATION REVEALED THAT THE ROLL PIN SECURING THE SHAFT TO THE PISTON WAS SHEARED.  THE LT ACTUATOR WAS INSPECTED AND THE ACTUATOR ROD WAS FOUND TO BE 2.5 TURNS FROM DISENGAGING FROM THE PISTON. 6-7 TURNS BOTTOMS THE ROD IN THE PISTON. REPLACED BOTH DOOR ACTUATORS.

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