# SDR ASAA2016010314622

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2016
- Submitted: January 5, 2016
- Operation: Air carrier
- Aircraft: [N431AS](https://openairdocs.org/aircraft/N431AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43255
- Aircraft time: 8,629 hours, 2,833 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: Rt A/C Pack
- Stage of operation: CR
- 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/ASAA2016010314622

## Discrepancy

RT PACK CAUTION LIGHT ILLUMINATED DURING CRUISE.  32,000 AND 40 PSI DUCT PRESSURE, RT PACK CAUTION DID NOT EXTINGUISH AFTER SYSTEM RESET.  ACFT GROUNDED. PERFORMED FIM TASK 21-62, TASK 854, STEP E.  MAINTENANCE MESSAGE SHOWN FOR RAM AIR EXIT. EXAMINED RAM AIR EXIT ACTUATORS, 28 VOLTS DC BETWEEN PINS 4 & 16, GREEN N2 LRU FAULT ON. PERFORMED REPAIR CONFIRMATION PER STEP 6 AND NO FAULTS NOTED. PERFORMED AMM TASK 21-51-00-730-801 AND NO FAULTS NOTED.  PACK OPERATES NORMALLY WITH NO FAULTS NOTED.

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