# SDR MALA070018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2007
- Submitted: January 25, 2007
- Operation: Air carrier
- Aircraft: N451XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B451
- Aircraft time: 18,507 hours, 20,382 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Landing Gear
- Part number: HP848430721
- Part serial: 2107
- Condition: Unknown
- Location: Mains
- 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/MALA070018

## Discrepancy

CREW REPORTED NO THREE GREEN DOWN AND LOCKED LIGHTS WHEN GEAR SELECTED AND IN TRANSIT LIGHT REMAINED ILLUMINATED.  FOLLOWED QRH AND PULLED EMERGENCY GEAR HANDLE RELEASE, GEAR SHOWED 3 GREEN.  AFTER PULLING THE EMERGENCY HANDLE AND PUMPING FOR ABOUT 10 SECONDS THE GEAR LOCKED DOWN.  HYDRAULIC PRESSURE WAS NORMAL.  REPLACED LANDING GEAR CONTROL VALVE IAW JOBCARD 3230-301.  PN ON AND OFF HP848430-721 SN ON 2080 SN OFF 2107.  REPLACED LEFT EXPLOSIVE SEPARATION BOLTS AND RIGHT EXPLOSIVE SEPARATION BOLTS.

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