# SDR ASMF201507021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2015
- Submitted: July 24, 2015
- Operation: Air carrier
- Aircraft: [N997AM](https://openairdocs.org/aircraft/N997AM), registered now
- Make and model: Boeing 737-76Q
- Registry model: [Boeing 737-76Q](https://openairdocs.org/model/boeing-737-76q) (OpenAirDocs)
- Aircraft serial: 30283
- Aircraft time: 43,215 hours, 24,394 cycles
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Pressure Switch
- Part number: 106055235
- Part serial: 22411
- Condition: Failed
- Location: Channel B
- Part time: 43,215 hours, 24,394 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF201507021

## Discrepancy

DURING TRANSIT CHECK, DURING PREFLIGHT PROCEDURE THE FLIGHT CONTROL LOW PRESSURE LIGHT TURNED OFF IN THE CHANNEL B. PERFORMED FIM 27-21 TASK 814 PROCEDURE, DETECTING THE LOW PRESSURE WARNING SWITCH OF SYS B WITH FAILURE.  THE LOW PRESSURE WARNING SWITCH WAS REPLACED IAW AMM 27-09-61, TESTED CORRECT.

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