# SDR ASAA2017022319922

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 23, 2017
- Submitted: February 27, 2017
- Operation: Air carrier
- Aircraft: [N494AS](https://openairdocs.org/aircraft/N494AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41729
- Aircraft time: 4,158 hours, 1,376 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Controller
- Part number: 51090248002
- Part serial: 5109024800023
- Condition: Faulted
- Location: Ee Bay
- Part time: 4,153 hours, 1,374 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017022319922

## Discrepancy

AFTER PUSHBACK & ENGINE START.  DURING RECALL, THE LEFT PACK AND CONTROL CABIN ZONE TEMP & AFT CABIN ZONE TEMP LIGHTS ILLUMINATED AMBER. RETURN TO GATE. ACFT GROUNDED. RIGHT PFTC SHOWS MAINTENANCE MESSAGE 21-51154 (ARINC FAULT).  LEFT PFTC DOES NOT POWER UP. REPLACED LEFT PFTC. GROUND VERIFICATION TESTED NORMAL IAW AMM 2161-17-400-400.

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