# SDR MALA000112

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2000
- Submitted: April 25, 2000
- Operation: Air carrier
- Aircraft: N420XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 420
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Control Box
- Part number: D49412001
- Part serial: 0840785
- Condition: Failed
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA000112

## Discrepancy

GFK - FLT 3213 - GEAR INTRANSIT LIGHT DOES NOT ILLUMINATE UPON GEAR RETRACTION, ILLUMINATED UPON EXTENSION.  LAMP TESTS OK.  MAINTENANCE REPLACED LANDING CONTROL UNIT IAW SAAB AMM 32-31-05.  CYCLED GEAR FIVE TIMES AND OPS CHECK GOOD.  (M)

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