# SDR ASAA2015032811143

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2015
- Submitted: March 30, 2015
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41730
- Aircraft time: 9,321 hours, 3,024 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: A/C Pack
- 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/ASAA2015032811143

## Discrepancy

ON CHECKLIST RECALL, OBSERVED "PACK" ANNUNCIATOR LIGHT.  ACCOMPLISHED AIR SYS PACK LIGHT QRH, PG-2.7 PROCEDURE.  AFTER STEP 2- BOTH PACK LIGHTS REMAINED EXTINGUISHED. ACFT GROUNDED.  PERFORMED PACK/ZONE TEMP CONT BITE TEST.  PREVIOUS FLT SHOWED RT  PACK TCV FAULT.  NO CURRENT FAULTS.  TEST PASSES WITH GREEN GO LIGHT, REF FIM 21-62, TASK 801.

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