# SDR 95UAL900140

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N171UA](https://openairdocs.org/aircraft/N171UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 24322
- Engine: Pwa PW4056
- System (JASC): [2900 · Hydraulic Power System](https://openairdocs.org/jasc/2900)
- Part: Actuator
- Part number: 1192113
- Condition: Failed
- Location: Lt Mlg Door
- Component: Dowty, 1U11928
- Stage of operation: CL
- Nature of condition: K, J
- Precautionary procedure: A, J
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95UAL900140

## Discrepancy

LANDING GEAR WOULD NOT FULLY RETRACT AFTER TAKEOFF.  AIRCRAFT LOST NR 4 HYDRAULIC SYSTEM AND RETURNED TO FIELD.  LANDING GEAR LOWERED MANUALLY.  REPLACED LEFT WING GEAR INBOARD DOOR ACTUATOR.

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