# SDR AALA202202141939

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2022
- Submitted: February 14, 2022
- Operation: Air carrier
- Aircraft: [N200NV](https://openairdocs.org/aircraft/N200NV), registered now
- Make and model: Boeing 737*
- Aircraft serial: 33341
- Aircraft time: 15,311 hours, 6,278 cycles
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Pressure Switch
- Part number: 90G183
- Condition: Faulty
- Location: Zone 100 - Fuse
- Stage of operation: CR
- How discovered: V
- Nature of condition: J, F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202202141939

## Discrepancy

AIRCRAFT WAS GROUNDED: FAULT INDICATION FOR SYSTEM B FLIGHT CONTROLS, FLIGHT RETURNED TO FIELD. INTERMITTENT FAULT PER TROUBLESHOOTING IAW FIM 27-21-00-810-814; REPLACED SYSTEM B LOW PRESSURE SWITCH WITH NEW IAW AMM 27-09-61 AS PRECAUTION, LEAK AND OPS CHECK GOOD.

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