# SDR SWIA200110133

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2001
- Submitted: August 29, 2001
- Operation: Air carrier
- Aircraft: [N250YV](https://openairdocs.org/aircraft/N250YV), registered now
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120250
- Aircraft time: 19,927 hours, 28,087 cycles
- Engine: Pwa PW118A
- System (JASC): [3231 · Landing Gear Door Retract Section](https://openairdocs.org/jasc/3231)
- Part: Sequence Valve
- Condition: Out Of Adj
- Location: Mlg
- Stage of operation: CL
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA200110133

## Discrepancy

UPON GEAR RETRACTION, LEFT MAIN GEAR REMAINED DOWN WITH BOTH A AND B RED AND GREEN LIGHTS ILLUMINATED.  RECYCLED GEAR DOWN WITH NORMAL INDICATIONS.  CYCLED GEAR UP AND LEFT MAIN AGAIN REMAINED DOWN, THIS TIME WITH RIGHT RED A AND B LIGHTS ILLUMINATED AND THEN EXTINGUISHED. RETURNED TO PSP.LEFT MLG-ADJUSTED FORWARD OUTBOARD DOOR SEQUENCE VALVE PLUNGER.  OPS CHECK GOOD.  RIGHT MLG ADJUSTED FORWARD OUTBOARD INBOARD DOOR SEQUENCE VALVE PLUNGER.  OPS CHECK GOOD.

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