# SDR 9706759998

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N8934E
- Make and model: Doug DC-9-31
- Registry model: [Doug DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (OpenAirDocs)
- Aircraft serial: 47143
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Retract Mech
- Condition: Malfunctioned
- Location: Nlg
- Stage of operation: AP
- Nature of condition: P
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9706759998

## Discrepancy

DURING APPROACH INTO MSP, NOSE LANDING GEAR GREEN DOWNLOCK LIGHT DID NOT ILLUMINATE AFTER GEAR EXTENSION.  CREW EXECUTED GO-AROUND AND UTILIZED EMERGENCY GEAR EXTENSION PROCEDURES ON SECOND APPROACH.  AIRCRAFT LANDED WITHOUT INCIDENT.  MAINTENANCE REPLACED LANDING GEAR CONTROL VALVE, BUNGEE CYLINDER, CHECK VALVES, AND TWO-WAY RESTRICTORS IN WHEEL WELL CEILING.  OPERATIONAL CHECK NORMAL ON GEAR CYCLE.  AIRCRAFT RETURNED TO SERVICE.

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