# SDR ASAA2014092809242

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2014
- Submitted: October 1, 2014
- Operation: Air carrier
- Aircraft: [N531AS](https://openairdocs.org/aircraft/N531AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35199
- Aircraft time: 17,230 hours, 5,250 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989084
- Part serial: 1602
- Condition: Malfunctioned
- Location: Rt A/C Pack
- Part time: 63,499 hours, 32,926 cycles
- Stage of operation: TX
- 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/ASAA2014092809242

## Discrepancy

RIGHT PACK LIGHT ILLUMINATED DURING TAXI,  QRH ACCOMPLISHED LIGHT OUT UNTIL RECALL. ACFT GROUNDED.  REPLACED THE RT PACK TRIM CONTROL VALVE.  IAW AMM 21-51-10/401. OPS CHECKED GOOD.  NO LEAKS NOTED.  BITE CHECK OF RT PACK/ZONE CONTROLLER CHECKED GOOD.

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