# SDR QXEA2018111600421

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 14, 2018
- Submitted: December 13, 2018
- Operation: Air carrier
- Aircraft: N453QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4489
- Aircraft time: 8,716 hours, 9,236 cycles
- System (JASC): [3232 · Landing Gear Door Actuator](https://openairdocs.org/jasc/3232)
- Part: Actuator
- Part number: 478301
- Part serial: MALNMC0122
- Condition: Inoperative
- Location: Nlg
- Part time: 8,716 hours, 9,236 cycles
- Stage of operation: CL
- 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/QXEA2018111600421

## Discrepancy

UPON GEAR RETRACTION NOSE DOOR AND NOSE UNSAFE LIGHT REMAINED ILLUMINATED APPROXIMATELY 10 SECONDS AFTER MAIN GEAR WIRE UP. FERRIED. REMOVED FROM SERVICE. R+R OF NLG MECHANICAL SEQUINCE VALVE, NLG DOORS SOLENOID SEQUINCE VALVE AND NLG DOORS ACTUATOR. OPERATIONAL TESTS OF THE LANDING GEAR EXTENSION + RETRACTION IS GOOD IAW AMM 32-31-00-710-801. PERFORMED 10 CYCLES OF EXTENSION + RETRACTION, ALL GEAR INDICATIONS ARE NORMAL. AIRCRAFT RETURNED TO SERVICE.

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