# SDR ASAA2017073021476

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2017
- Submitted: July 31, 2017
- Operation: Air carrier
- Aircraft: [N453AS](https://openairdocs.org/aircraft/N453AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36354
- Aircraft time: 14,054 hours, 4,621 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: Lt 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/ASAA2017073021476

## Discrepancy

LEFT PACK LIGHT ILLUMINATED ON RECALL. ACFT GROUNDED.  PERFORMED ZONE TEMP CONTROL BITE NR 1 IAW AMM 21-61-00-700-806-002.  ON BITE FOUND EXIT LIGHT ILLUMINATE,  NO HISTORY OF FAULT ON CONTROLLER, VERIFY PASSED. PERFORMED AMM 21-51-21-710-002.  RESET EXIT ACTUATOR INTERNAL FAULTS.  SIX CIRCUIT BREAKERS OPENED FOR 10 SECONDS AND RESET. PERFORMED PACK OPS CHECKED LEFT PACK. NO FAULTS.

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