# SDR ASAA2021052534905

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2021
- Submitted: May 27, 2021
- Operation: Air carrier
- Aircraft: [N588AS](https://openairdocs.org/aircraft/N588AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35685
- Aircraft time: 48,198 hours, 14,352 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: Illuminated
- Location: Lt A/C Pack
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021052534905

## Discrepancy

LEFT PACK LIGHT ILLUMINATES ON MASTER RECALL. LIGHT EXTINGUISHES ON RESET. GROUNDED - YES. INITIAL BITE TEST SHOWED TCV FAULT ON L PACK. FAULT CLEARED. BITE TEST ACCOMPLISHED PER B737-800 AMM 21-61-00-700-806-002.

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