# SDR ASAA2018020123360

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 2018
- Submitted: February 2, 2018
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 16,970 hours, 5,580 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Controller
- Condition: Faulted
- Location: Left
- Stage of operation: NR
- 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/ASAA2018020123360

## Discrepancy

DURING RECALL, THE AIR COND LIGHT AND LEFT PACK LIGHT ILLUMINATED.  LIGHTS WENT OUT WITH RESET.  ACFT GROUNDED.  ACCOMPLISHED A BITE CHECK OF BOTH PACK ZONE TEMP CONTROLLERS.  THE LEFT LOGGED EXIT ON PREVIOUS FLIGHT.  RIGHT HAD NO FAULTS.  RAN VERIFY CHECK ON BOTH PZTCS.  BOTH GO IAW FIM 21-62/801, AND FIM 21-62/853.

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