# SDR ASAA2023041742944

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2023
- Submitted: April 21, 2023
- Operation: Air carrier
- Aircraft: [N491AS](https://openairdocs.org/aircraft/N491AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44109
- Aircraft time: 27,754 hours, 8,682 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Unknown
- Condition: Unknown
- Location: Unknown
- 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/ASAA2023041742944

## Discrepancy

RIGHT PACK LT ILLUM ON MC RECALL EXTINGUISHES WITH RESET. GROUNDED - YES.  PERFORMED BITE TEST ON ZONE TEMP CONT UNITS, REF B737-900 AMM 21-61-00-700-806-002; FOUND SRADA EXIT ACTUATOR FAULT ON CONT 2. ACCOMP B737-900 FIM 21-53 TASK 821. PZTC BITE CK ACCOMPLISHED WITH NO FAULTS FOUND REF FIM 21-62 TASK 801. RAN PACKS @ DIFFERENT TEMP SETTINGS. RE-ACCOMPLISHED PZTC BITE CK NO FAULTS FOUND.

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