# SDR ASAA2017062921234

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 29, 2017
- Submitted: July 3, 2017
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 37,243 hours, 11,354 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: Rt A/C Pack
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017062921234

## Discrepancy

ON MASTER CAUTION RESET, RT PACK LIGHT REMAINED ILLUMINATED.  ACFT GROUNDED.  OBSERVED VALVE OPENED & CLOSED DURING TEST.  PERFORMED LEFT AND RIGHT PACK TEMP CONTROL BITE IAW FIM 21-62. TEST LOGGED  PACK TCV FAULT ON THE NR 2 CONTROLLER. RESET FAULT. RAN PACKS FOUR TIMES AND PERFORMED A BITE TEST AFTER EACH CYCLE. NO FAULTS. NO HISTORY IN HTE PAST 30 DAYS.

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