# SDR ASAA2023021241926

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 2023
- Submitted: February 14, 2023
- Operation: Air carrier
- Aircraft: [N494AS](https://openairdocs.org/aircraft/N494AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41729
- Aircraft time: 25,808 hours, 7,900 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CR
- 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/ASAA2023021241926

## Discrepancy

LEFT PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL. LEFT RAM DOOR FULL OPEN LIGHT ILLUMINATED AT CRUISE. GROUNDED - YES. COMPLIED WITH PACK TEMP CONTROLLER BITE PROCEDURE REF B737-900 FIM 21-62 TASK 801. FOUND FAULT # 21-51406 (SRDA EXIT). NO FAULTS FOUND AFTER GROUND TEST. PACK LIGHT EXTINGUISHED.

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