# SDR ASAA2017091821978

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 2017
- Submitted: September 25, 2017
- Operation: Air carrier
- Aircraft: [N536AS](https://openairdocs.org/aircraft/N536AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35203
- Aircraft time: 21,981 hours, 6,342 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 5416744
- Part serial: 15621
- Condition: Failed
- Location: Lt Ram Air
- Part time: 22,047 hours, 6,362 cycles
- 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/ASAA2017091821978

## Discrepancy

LEFT PACK LIGHT ILLUMINATED UPON MASTER CAUTION CHECK AND RESET.  ACFT GROUNDED.  LEFT PACK TEMP CONTROL INOPERATIVE.   PERFORMED LEFT PACK TEMPERATURE CONTROL BITE PROCEDURE IAW FIM 21-62 TASK 801. BITE FAILED LEFT PACK RAM AIR ACTUATOR. REMOVED AND REPLACED LT RAM AIR INLET ACTUATOR. OPS CHECKED GOOD IAW AMM 21-51-21.

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