# SDR ASAA2023030242170

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2023
- Submitted: March 6, 2023
- Operation: Air carrier
- Aircraft: [N518AS](https://openairdocs.org/aircraft/N518AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35693
- Aircraft time: 51,200 hours, 15,021 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: TX
- 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/ASAA2023030242170

## Discrepancy

AFTER ENGINE START, MASTER CAUTION ON RECALL, LEFT PACK LIGHT REMAINS ON BUT RESETS - EXTINGUISHES WITH RECALL. GROUNDED - YES. ACCOMPLISHED PZTC BITE FOR L/H PACK REF AMM 21-61-00. BITE TEST GOOD. PREV FLT SHOWED L/H RAM AIR ACTUATOR FAULT. NO OTHER DEFECTS NOTED.

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