# SDR ASAA2019092030759

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 20, 2019
- Submitted: September 23, 2019
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 50,971 hours, 14,908 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: NR
- 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/ASAA2019092030759

## Discrepancy

PUSHING MASTER CAUTION RECALL THE RIGHT PACK LIGHT ILLUMINATES. WHEN PUSHING THE MASTER CAUTION RESET THE RIGHT PACK LIGHT EXTINGUISHES, PER QRH 2.12, PACK (800/900) " NO FURTHER ACTION REQUIRED" (SEA MNT - DISPATCH + FLIGHT FODO NOTIFIED VIA SATCOM @ 19:30Z). GROUNDED - YES. PERFORMED PACK TEMP CONTROL BITE PROCEDURE PER FIM 21-62 TASK 801. FOUND INTERMITTENT FAULT ON RIGHT RAM AIR ACTUATOR. RAN PACKS AND RIGHT PACK LIGHT REMAINED EXTINGUISHED. GROUND VERIFICATION SUCCESSFUL.

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