# SDR UIEA2021062101397

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2021
- Submitted: June 22, 2021
- Operation: Air carrier
- Aircraft: [N1997A](https://openairdocs.org/aircraft/N1997A), registered now
- Make and model: Boeing 767-33A
- Registry model: [Boeing 767-33A](https://openairdocs.org/model/boeing-767-33a) (OpenAirDocs)
- Aircraft serial: 27310
- Aircraft time: 20,937 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Check Valve
- Part number: 7321175003
- Part serial: 873258
- Condition: Malfunctioned
- Location: Lt A/C Pack
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021062101397

## Discrepancy

LEFT AC COMPT CHECK VALVE (BELOW ISO VALVE) MISFUNCTIONING(<P>REMOVED AND REPLACD LEFT AC CHECK VALVE IAW B767 36-11-05. OPS CK GOOD.</P>)

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