# SDR UIEA2021022100375

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 2021
- Submitted: February 24, 2021
- Operation: Air carrier
- Aircraft: [N649GT](https://openairdocs.org/aircraft/N649GT), registered now
- Make and model: Boeing 767375
- Aircraft serial: 25864
- Aircraft time: 92,486 hours, 23,664 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3964621
- Part serial: TLS25068
- Condition: Inoperative
- Location: Lt A/C Pack
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021022100375

## Discrepancy

NO PACK OFF LIGHT ON OVERHEAD PANEL & NO L PACK OFF EICAS WHEN PACK SELECTED OFF.  REMOVED AND REPLACED LEFT PACK FLOW CONTROL VALVE IAW B767 M/M 21-51-01, OPS CHECK NORMAL.

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