# SDR FDEA202606170770

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 17, 2026
- Submitted: June 18, 2026
- Operation: Air carrier
- Aircraft: [N924FD](https://openairdocs.org/aircraft/N924FD), registered now
- Make and model: Boeing 757204
- Aircraft serial: 26267
- Aircraft time: 71,612 hours, 30,049 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Sequence Valve
- Part number: 26702889
- Part serial: 0133
- Condition: Inoperative
- Location: Zone 700
- Stage of operation: AP
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202606170770

## Discrepancy

GEAR DISAGREE MESSAGE.  NLG INDICATION WAS NOT ILLUMINATED.  NLG DID NOT  EXTEND.  COMPLETED QRH 14.1.12.  AFTER CHKLST COMPLETION NLG EXTENSION SUCCESSFUL.  EMERGENCY DECLARED.  AFTER SHUTDOWN STATUS MESSAGE  LDG GEAR MONITOR.  EMERGENCY DECLARED.   LANDING GEAR LOCKED DOWN. ADC VMO/MMO SWITCH SELECTED TO ALTN POSITION.  PLACED ACFT TO NORMAL CONFIGURATION. CYCLED NLG MULITPLE TIMES ON JACK UNBLE TO GET NLG TO FAILED TOEXTEND. NOTICED EVERY OTHER CYCLE NLG & DOORS SLOW TO OPEN & EXTEND. SUSPECT NLG DOOR SEQUENCE VALVE, NLG DOOR ACTUATOR & NLG LOCK ACTUATOR.  R & R NLG SEQUENCE VALVE, NLG DOOR ACTUATOR & NLG LOCK ACTUATOR. OPS & LEAK CHECK PASSED. CYCLED NLG MULTIPLE TIMES, ALL INDICATIONS NORMAL.

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