# SDR ASAA2021080635661

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 2021
- Submitted: August 10, 2021
- Operation: Air carrier
- Aircraft: [N579AS](https://openairdocs.org/aircraft/N579AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35187
- Aircraft time: 52,546 hours, 15,505 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Warning Message
- Condition: False Activation
- Location: Tcv
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021080635661

## Discrepancy

AFTER ENGINE START- RIGHT PACK LIGHT ON - FOLLOWED QRH AFTER MC RESET. IS WENT OUT. GROUNDED - YES. PACK/ZONE TEMP CONTROLLER BITE TEST DONE ON RH SIDE: THIS PACK TCV SHOWED FAULTING ON PREVIOUS FLIGHT. FAULT RESETS REF B737-800 AMM 21-61-00-806-002.

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