# SDR ASAA2017052820882

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 28, 2017
- Submitted: May 30, 2017
- Operation: Air carrier
- Aircraft: [N512AS](https://openairdocs.org/aircraft/N512AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39043
- Aircraft time: 33,866 hours, 10,231 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Controller
- Condition: Malfunctioned
- Location: Nr 1
- Stage of operation: NR
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017052820882

## Discrepancy

LEFT PACK LIGHT ILLUMINATES ON RECALL. EXTINGUISHES WITH MASTER CAUTION RESET.  ACFT GROUNDED.  BITE CHECKED ZONE CONT SHOWS TCV FAULT ON NR 1 CONTROLLER, FAULT CLEARED & CHECKED NORMAL IAW AMM 21-61-00. GROUND VERIFICATION SUCCESSFUL.

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