# SDR UPS05M44123

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2005
- Submitted: March 16, 2005
- Operation: Air carrier
- Aircraft: [N251UP](https://openairdocs.org/aircraft/N251UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48744
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Mechanism
- Condition: Dirty
- Location: Mlg
- 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/UPS05M44123

## Discrepancy

WHEN LANDING GEAR SELECTED DOWN DURING APPROACH 4 RED GEAR UNSAFE LIGHTS ILLUMINATED.  SYNOPTIC DISPLAY INDICATED GEAR UNSAFE.  AFTER APPROX 2 MINS, CYCLED GEAR UP AND BACKDOWN, ALL 4 GEAR INDICATED SAFE AS GEAR CAME DOWN SEQUENCE WAS NOTICABLY SLOWER THAN NORMAL.  AIRCRAFT REMAINS OUT OF SERVICE, POSSIBLY FERRY FLIGHT TO SDF.  FOUND GEAR HANDLE MECHANISM DIRTY CLEANED MECHANISM & GEAR HANDLE SWITCH, LUBED HANDLE AND BEARING OPS CK NORMAL GEAR PER 32-31-00.

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