# SDR ASAA2022112040874

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 20, 2022
- Submitted: November 23, 2022
- Operation: Air carrier
- Aircraft: [N486AS](https://openairdocs.org/aircraft/N486AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44107
- Aircraft time: 26,605 hours, 8,374 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: Rt A/C Pack
- 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/ASAA2022112040874

## Discrepancy

AT TOD RT PACK LIGHT ON RECALL ILLUMINATED RAN QRH. R PACK LIGHT EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. C/W B737-900 FIM 21-62 TASK 854 RIGHT RAM AIR EXIT ACTUATOR - FAULT ISOLATION. CYCLED 28V DC FOR THE RIGHT SRADA TO ERASE THE SRADA INTERNAL FAULT MEMORY AND PERFORMED BITE CHECK OF PZTC REF FIM 21-62 TASK 801, NO FAULTS FOUND. PERFORMED CABIN TEMPERATURE CONTROL AND INDICATION - OPERATIONAL TEST REF B737-900 AMM TASK 21-61-00-700-807-002, ALL TEMPS INDICATE NORMAL AND NO FAULTS ON RECALL. ALL TESTS PASS.

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