# SDR ASAA2019102173045

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2019
- Submitted: October 22, 2019
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 23,714 hours, 7,680 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: Lt A/C Pack
- Stage of operation: NR
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019102173045

## Discrepancy

LEFT PACK CAUTION LIGHT ILLUM ON RECALL. EXTINGUISH ON RESET. GROUNDED - YES. REF B737-900 FIM 21-53 TASK 809, #1 PZTC BITE PREV FLT LOGGED SRADA INLET FAULT, RESET FAULT, PZTC BITE VERIFY GOOD W/O FAULT. VERIFIED LEFT PACK OPS CHECKED NORMAL ON GND W/O FAULT LIGHTS.

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