# SDR IPXA2014082284036

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2014
- Submitted: August 22, 2014
- Operation: Air carrier
- Aircraft: [N421UP](https://openairdocs.org/aircraft/N421UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25281
- System (JASC): [3231 · Landing Gear Door Retract Section](https://openairdocs.org/jasc/3231)
- Part: Sequence Valve
- Condition: Bypassing
- Location: Mlg Door
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2014082284036

## Discrepancy

DURING GEAR RETRACTION HEARD LOUD SOUND.  AFTER RETRACTION HAD EICAS GEAR DISAGREE WITH AN UNSAFE LIGHT.  R & R DOOR OPERATED SEQUENCE VALVE FOR BYPASSING.   OPS CHECKED GOOD IAW AMM 32-34-05-01.

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