# SDR ASAA2021100836220

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2021
- Submitted: October 12, 2021
- Operation: Air carrier
- Aircraft: [N590AS](https://openairdocs.org/aircraft/N590AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35687
- Aircraft time: 50,078 hours, 14,950 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021100836220

## Discrepancy

LEFT PACK LIGHT ILLUMINATED - RESET. GROUNDED - YES. PERFORMED BITE TEST OF # 1 AND # 2 PACK CONTROLERS FOUND # 1 PACK CONTROLLER TCV FAULT, PERFORMED VERIFY OF BOTH CONTROLLERS NO FAULTS FOUND REF B737-800 FIM 21-62 TASK 801 RESET BOTH CONTROLLERS AND PERFORMED BITE CHECK AGAIN NO FAULTS FOUND.

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