# SDR ASAA2019062229788

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 22, 2019
- Submitted: July 2, 2019
- Operation: Air carrier
- Aircraft: [N486AS](https://openairdocs.org/aircraft/N486AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44107
- Aircraft time: 14,961 hours, 4,903 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: DE
- 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/ASAA2019062229788

## Discrepancy

ON DESCENT AT RECALL THE RIGHT PACK LIGHT ON. PACK LIGHT EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED HEAT EXCHANGER CLEANING T/C 78121000. ACCOMPLISHED BITE CHECK. NO FAULTS. PACK OPERATION NORMAL. ETOPS GROUND VERIFICATION GOOD.

---
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.