# SDR ASAA2013080395727

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 2013
- Submitted: August 6, 2013
- Operation: Air carrier
- Aircraft: [N564AS](https://openairdocs.org/aircraft/N564AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35103
- Aircraft time: 25,993 hours, 8,066 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: TX
- 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/ASAA2013080395727

## Discrepancy

LEFT PACK ON RECALL ILLUMINATES.  ACFT GROUNDED.  BITE OF PZTC NR 1 SHOWS RAM AIR ACTUATOR FAULT.  RAN BITE TEST OF NR 1 PZTC & VERIFIED SMOOTH OPERATION OF RAM AIR ACTUATOR 5 TIMES.  FAULT NEVER DUPLICATED REF MM 21-61, TASK 801.  GROUND VERIFICATION OF LT RAM AIR ACTUATOR ACCOMPLISHED.  NO HISTORY 90 DAYS.

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