# SDR ASAA2022120140999

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2022
- Submitted: December 5, 2022
- Operation: Air carrier
- Aircraft: [N936AK](https://openairdocs.org/aircraft/N936AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43379
- Aircraft time: 1,736 hours, 541 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Pressure Sensor
- Condition: Out Of Tolerance
- Location: Lt A/C Pack
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022120140999

## Discrepancy

WHILE ACCOMPLISHING ASA T/C 31-005-00. FOUND SMT PACK CONTROL CHANNEL L MAINT MESSAGE 21-55230 FAULT CODE 21545141. LEFT AIR CONDITIONING INLET PRESSURE SENSOR IS OUT OF RANGE. GROUNDED - YES.  REMOVED & REPLACED L/H PRESSURE SENSOR REF B737-9 AMM 47-43-04 OPS CHECK GOOD.

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