# SDR ASAA2020030932372

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2020
- Submitted: March 10, 2020
- Operation: Air carrier
- Aircraft: [N562AS](https://openairdocs.org/aircraft/N562AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35091
- Aircraft time: 51,517 hours, 15,281 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Controller
- Part number: 6228145
- Part serial: 62281403930
- Condition: Faulty
- Location: E&E Bay
- Part time: 51,540 hours, 15,287 cycles
- Stage of operation: TX
- 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/ASAA2020030932372

## Discrepancy

DURING AFTER START CHECKLIST AFTER PRESSING RECALL WE GOT A #1 PACK LIGHT THAT RESETS WITH MASTER CAUTION. GROUNDED - YES. BITE TEST HAD "TCV" FAULT. VALVE WAS REPLACED LESS THAN 90 DAYS AGO. HISTORY OF THIS. REPLACED CONTROLLER PER B737-800 AMM 21-61-20/401 AS PRECAUTIONARY. OP CHECKS GOOD.

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