# SDR BSAASDR0721

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 7, 2007
- Submitted: June 14, 2007
- Operation: Air carrier
- Aircraft: N139ZV
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft serial: UE139
- Aircraft time: 25,326 hours, 33,928 cycles
- System (JASC): [3297 · Landing Gear System Wiring](https://openairdocs.org/jasc/3297)
- Part: Wire
- Condition: Chafed
- Location: Landing Gear
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/BSAASDR0721

## Discrepancy

WHEN CREW SELECTED GEAR DOWN, THE LANDING GEAR CONTROL CB IMMEDIATELY TRIPPED.  CREW EXTENDED GEAR AND LANDED WITH NO FURTHER INCIDENT.  A CHAFED WIRE FOR THE GEAR DOWN MICROSWITCH WAS FOUND UNDER THE CABIN FLOOR BENEATH SEAT 4A. THE WIRE WAS GROUNDING ON A DEICE LINE. THE CHAFED SECTION WAS REMOVED, WIRE WAS RESECURED & CHAFE PROTECTED.

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