# SDR TRBA201131902

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 2011
- Submitted: November 15, 2011
- Operation: Air carrier
- Aircraft: N541AT
- Make and model: Aerosp ATR 72-212A
- Registry model: [Aerosp ATR 72-212A](https://openairdocs.org/model/aerospatiale-atr-72-212a) (OpenAirDocs)
- Aircraft serial: 541
- Aircraft time: 22,492 hours, 26,626 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Selector Valve
- Condition: Malfunctioned
- Location: Landing Gear
- Stage of operation: LD
- 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/TRBA201131902

## Discrepancy

UPON SLECTING THE GEAR TO DOWN POSITION THERE IS APPARENT ACTION OF THE GEAR FOR 5 TO 7 SECOND FOLLOWED BY THE USUAL GEAR NOISE GREEN SYS PRESSURE WHILE IN TRANSIT DROPS TO 0 PSI UNTIL 3 GREENS.  R & R L/G SELECTOR VALVE IAW JIC 32-31-51 AND LEAKS CK GOOD AT THIS TIME.

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