# SDR SWIA972311

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2001
- Submitted: February 1, 2001
- Operation: Air carrier
- Aircraft: N251YV
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120251
- Aircraft time: 18,500 hours, 26,075 cycles
- Engine: Pwa PW118B
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Downlock Sensor
- Condition: Failed
- Location: Nlg
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA972311

## Discrepancy

SELECTING GEAR UP NOSE INDICATION WAS A GREEN, B RED.  WHEN CYCLING TO GEAR DOWN INDICATION - LEFT: A & B RED, NOSE: B RED, A GREEN, RIGHT; A&B RED.  AFTER 5 MINUTES GEAR DROPPED BY ITSELF AND 6 GREEN LIGHTS.  REPLACED DOWNLOCK PROX SENSOR FOR A-SYSTEM ON THE NOSE GEAR.  PERFORMED GEAR SWING.  OPS CHECKS GOOD.

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