# SDR AALA960555

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 3, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N1413A](https://openairdocs.org/aircraft/N1413A), registered now
- Make and model: Fokker F.28 MK 0100
- Registry model: [Fokker F.28 MK 0100](https://openairdocs.org/model/fokker-f-28-mk-0100) (OpenAirDocs)
- Aircraft serial: 11376
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Seq Vlv
- Part number: 71540
- Condition: Defective
- Location: Nlg
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA960555

## Discrepancy

DFW - FLT 774 - AFTER TAKEOFF MTY, NOSE LANDING GEAR MESSAGE APPEARED.  RECYCLED LANDING GEAR WITH SAME RESULTS.  VISUALLY CONFIRMED NOSE LANDING GEAR RETRACTED BUT DOORS WERE OPEN.  CLIMBING THROUGH FL 180, NOSE LANDING GEAR DOORS CLOSED AND ALL INDICATIONS RETURNED TO NORMAL.  AIRCRAFT PROCEEDED TO DFW AND LANDED WITHOUT INCIDENT.  REPLACED NOSE LANDING GEAR SEQUENCE VALVE AND FLOW RESTRICTOR.  ACCOMPLISHED LANDING GEAR RETRACTION CHECK WITH NO DEFECTS FOUND.  SYSTEM GROUND CHECKED NORMAL OPERATION.  (M)

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