# SDR JBXA0000160

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2000
- Submitted: March 30, 2000
- Operation: Air carrier
- Aircraft: [N105ML](https://openairdocs.org/aircraft/N105ML), 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: 11475
- Aircraft time: 18,055 hours, 13,055 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Sequence Valve
- Condition: Malfunctioned
- Location: Nlg
- Stage of operation: AP
- 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/JBXA0000160

## Discrepancy

NOSE GEAR DID NOT EXTEND ON FIRST ATTEMPT.  ON SECOND ATTEMPT IT EXTENDED NORMALLY.  INSPECTED AIRCRAFT, PINNED GEAR AND PERFORMED MX FERRY FLIGHT IAW MIDWAY AIRLINES GMM CHAPTER 6 SECTION 4 FROM TPA TO RDU.  REMOVED AND REPLACED NLG DOOR SEQUENCING VALVE AND NLG DOOR SELECTOR VALVE IAW F-100 AMM 32-32-10 AND 32-32-11.  ALSO, REPLACED NLG DOOR ACTUATOR FOR MINOR LEAKAGE IAW F-100 AMM 32-32-16.  CLEANED IN LINE SCREEN FILTER BETWEEN NLG DOOR SELECTOR AND SEQUENCING VALVE.  LANDING GEAR OPS TEST AND LEAK CHECK GOOD.

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