# SDR ASAA2017122523006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 25, 2017
- Submitted: December 27, 2017
- Operation: Air carrier
- Aircraft: [N440AS](https://openairdocs.org/aircraft/N440AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41705
- Aircraft time: 16,627 hours, 5,514 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: Illuminated
- Location: Rt A/C Pack
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017122523006

## Discrepancy

RT PACK LIGHT ILLUMINATED ON RECALL.  ACFT GROUNDED.  ACCOMPLISHED BITE OF PACK-ZONE TEMP CONTROLLERS.  BITE SWITCH ON RIGHT PZTC FAULTS  SRADA INLET IAW FIM 21-62, TASK 801. ACCOMPLISHED FIM 21-62 TASK 852 CYCLED POWER TO RIGHT SRADA. RAN VERIFY TEST ON RIGHT PZTC. "GO" LIGHT ON. RESET RIGHT PZTC. GROUND VERIFICATION SUCCESSFUL.

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