# SDR ASAA2018122637543

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2018
- Submitted: December 27, 2018
- Operation: Air carrier
- Aircraft: [N558AS](https://openairdocs.org/aircraft/N558AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35177
- Aircraft time: 47,505 hours, 14,033 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Message
- Condition: Abnormal
- Location: Lt A/C Pack
- Stage of operation: TX
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018122637543

## Discrepancy

LEFT PACK WILL NOT RESET WITH MASTER CAUTION "PUSH TO RESET" AS SPECIFIED BY MEL 21-32B. GROUNDED - YES. REF B737-800 FIM 21-62 TASK 801, PERFORMED PACK TEMP CONTROL BITE. RESET FAULTS AND PACK LIGHT NOW RESETS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.