# SDR ASAA2014090609061

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 6, 2014
- Submitted: September 8, 2014
- Operation: Air carrier
- Aircraft: [N538AS](https://openairdocs.org/aircraft/N538AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 41188
- Aircraft time: 9,069 hours, 2,714 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Warning Light
- Condition: False Activation
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014090609061

## Discrepancy

DURING RECALL,  MASTER CAUTION ILLUMINATED WITH AIR CONDITIONER CONTROLLER CAB ZONE TEMP LIGHT.  LIGHT EXTINGUISHES WITH MASTER CAUTION RESET.  ACFT GROUNDED.  ACCOMPLISHED  PACK/ZONE TEMP  BITE NR 2, LAST FLIGHT FAULT.  FLIGHT DECK TRIM VALVE CLEARED FAULT.   NR 1, NO FAULTS.  RAN BOTH PACKS FOR 1 HR.  NO FAULT, REF MM 21-00-00-800-803 & 21-61-00-700-806-002.

---
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.