# SDR ASAA2022060338573

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 3, 2022
- Submitted: June 14, 2022
- Operation: Air carrier
- Aircraft: [N481AS](https://openairdocs.org/aircraft/N481AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44106
- Aircraft time: 25,381 hours, 7,980 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Cabin Air Sys
- Condition: Warning Light
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022060338573

## Discrepancy

LH PACK ILLUMINATES ON RECALL, RESETS WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED FIM TASK 21-53 TASK 821, BOTH PZTC HAVE NO FAULTS LOGGED ON PREV FLT AND BITE VERIFY TESTS GOOD W/O FAULTS MSG. VERIFIED LEFT PACK OPS CHECKED NORMAL ON GND.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.