# SDR ASAA2013052994928

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 29, 2013
- Submitted: May 31, 2013
- Operation: Air carrier
- Aircraft: [N570AS](https://openairdocs.org/aircraft/N570AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35185
- Aircraft time: 24,357 hours, 7,262 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Condition: Faulted
- Location: Ram Air Door
- 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/ASAA2013052994928

## Discrepancy

LEFT PACK LIGHT ILLUMINATED ON RECALL AND GOES OUT ON MASTER CAUTION, RESET.  ACFT GROUNDED.  CONFIRMED LT PACK, PERFORMED BITE TEST OF NR 1 & NR 2 PACK/ZONE TEMP CONTROLLERS IAW AMM 21-61-00.  FOUND RAM AIR ACTUATOR FAULT ON NR 1 CONTROLLER.  FAULT RESET UPON TEST COMPLETION & SUBSEQUENT TESTS.  ALL OPS NORMAL - NO DEFECTS.  LT PACK LIGHT REMAINS EXTINGUISHED ON MASTER RECALL.  NO HISTORY OF RAM AIR ACT FAULT LT LAST 30 DAYS.  ETOPS GND VERIFICATION SUCCESSFUL.

---
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.