# SDR 02FDEA00665

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2002
- Submitted: September 20, 2002
- Operation: Air carrier
- Aircraft: [N124FE](https://openairdocs.org/aircraft/N124FE), registered now
- Make and model: Boeing 727-100
- Registry model: [Boeing 727-100](https://openairdocs.org/model/boeing-727-100) (OpenAirDocs)
- Aircraft serial: 19360
- Aircraft time: 63,299 hours, 47,559 cycles
- System (JASC): [3231 · Landing Gear Door Retract Section](https://openairdocs.org/jasc/3231)
- Part: Sequence Valve
- Part number: 1U10851
- Part serial: 564
- Condition: Malfunctioned
- Location: Rt Mlg Ww
- 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/02FDEA00665

## Discrepancy

UPON GEAR RETRACTION, GEAR DOORS LIGHT & RIGHT MAIN GEAR UNSAFE LIGHTS REMAINED ILLUMINATED.  RED TAB PROCEDURES ACCOMPLISHED.  WHEN INITIALLY MOVING, AND BEFORE REACHING THE "OFF" POSITION, IT APPEARED A HYDRAULIC SURGE OCCURRED , WITH A   CORRESPONDING "BUMP" AND BOTH LIGHTS EXTINGUISHED.  REMOVED AND REPLACED MAIN LANDING GEAR LOCK OPERATED SEQUENCE VALVE PER 727-100 MAINTENANCE MANUAL 32-32-031-4, OPERATIONAL CHECK GOOD PER 727-100 MAINTENANCE MANUAL 32-32-00-5. OK FOR SERVICE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.