# SDR ASAA2016022115606

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 2016
- Submitted: February 25, 2016
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 29,154 hours, 8,880 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: 3989083
- Part serial: 5296
- Condition: Failed
- Location: Ac System
- Part time: 51,258 hours, 19,704 cycles
- 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/ASAA2016022115606

## Discrepancy

AFTER START, GOT AIR COND LIGHT WITH MASTER CAUTION RECALL.  ZONE TEMP CONTROLLER CAB LIGHT, RAN QRH.  LIGHT DOES GO OUT WITH RESET AND TEMP IS CONTROLLABLE.  ACFT GROUNDED.  R & R LT ZONE TRIM AIR MODULATING VALVE IAW AMM 21-61-21.  BITE TEST 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.