# SDR UPS96521303

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N447UP](https://openairdocs.org/aircraft/N447UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 27736
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Sequence Value
- Part number: 273N10037
- Condition: Failed
- Location: Nlg
- Stage of operation: AP
- Nature of condition: P
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS96521303

## Discrepancy

INSPECTION TYPE N/A, NOSE GEAR GREEN DOWN LIGHT FAILED TO ILLUMINATE WITH GEAR HANDLE DOWN.  EICAS MESSAGE GEAR DISAGREE AND GEAR DOORS DISPLAYED.  DOORS AND GEAR AMBER LIGHTS ILLUMINATED.  INDICATIONS WERE NORMAL AFTER ALTERNATE GEAR EXTENSION.  TROUBLESHOT PER FAULT ISOLATION MANUAL 32-20-00 FIG 104, FOUND SEQUENCE VALVE AT FAULT.  REMOVED AND REPLACED SAME PER MM 32-34-05, COMPLIED WITH NOSE GEAR ADJUSTMENT TEST PER 32-34-00 AND 07-11-02.  NO DEFECTS NOTED, (P/N 2670288-7) ON, (P/N 2670288-9) OFF, (S/N 2204) ON, (S/N 0260) OFF.

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