# SDR ASAA12511343

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 3, 2012
- Submitted: April 5, 2012
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 21,050 hours, 6,387 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Condition: Malfunctioned
- Location: Left
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA12511343

## Discrepancy

ON RECALL MASTER CAUTION AIR COND & LEFT PACK LIGHT ILLUMINATE.  QRH ACCOMPLISHED.  ALL LIGHTS RESET WITH MASTER CAUTION PUSH TO RESET IS DEPRESSED.  PERFORMED BITE CHECK PER FIM 21-53-00. FOUND FAULT FOR PACK NR 1 TCV. VERIFY TEST DID NOT CONFIRM FAULT.  OPERATED PACK AND FAULT DID NOT RETURN.  PACK OPS CHECKED NORMAL.

---
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.