# SDR ASAA2019081293353

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2019
- Submitted: August 12, 2019
- Operation: Air carrier
- Aircraft: [N440AS](https://openairdocs.org/aircraft/N440AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41705
- Aircraft time: 22,983 hours, 7,482 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: V
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019081293353

## Discrepancy

LEFT PACK LIGHT ILLUMINATES DURING RECALL. IT DOES RESET. GROUNDED - YES. PERFORMED B737-900 FIM 21-62 TASK 801. FOUND NO CURRENT FAULTS. NO FLIGHT FAULT HISTORY. PERFORMED SUPPLY AIR CONDITIONING WITH L/H PACK AND NO FAULTS FOUND PER B737-900 AMM 21-00-00-800-803. PERFORMED FIM 21-62 TASK 801 AND FOUND NO FAULTS. COULD NOT DUPLICATE PROBLEM.

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