# SDR ASAA2018043024412

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 2018
- Submitted: April 30, 2018
- Operation: Air carrier
- Aircraft: [N514AS](https://openairdocs.org/aircraft/N514AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35193
- Aircraft time: 36,689 hours, 11,028 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989083
- Part serial: 10463
- Condition: Malfunctioned
- Location: Lt A/C Pack
- Part time: 37,590 hours, 11,752 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/ASAA2018043024412

## Discrepancy

ON MC RECALL, AIR COND LIGHT AND LEFT PACK LIGHT ILLUMINATED. LIGHTS EXTINGUISH ON MC RESET.  ACFT GROUNDED.  REMOVED AND REPLACED THE LEFT PACK TCV IAW AMM 21-51-10, BITE TEST AND LEAK CHECKED GOOD.

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