# SDR IPXA2018121436920

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 14, 2018
- Submitted: January 9, 2019
- Operation: Air carrier
- Aircraft: [N323UP](https://openairdocs.org/aircraft/N323UP), registered now
- Make and model: Boeing 767-34AF
- Registry model: [Boeing 767-34AF](https://openairdocs.org/model/boeing-767-34af) (OpenAirDocs)
- Aircraft serial: 27749
- Aircraft time: 55,513 hours, 17,991 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Shutoff Valve
- Condition: Faulty
- Location: Ac Bay
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2018121436920

## Discrepancy

INSPECTION TYPE:N/A ATB - DUE TO CABIN ALTITUDE. AFTER ACCOMPLISHING THE QRH PROC CABIN REMAINED UNCONTROLLABLE. PERFORMED PRESSURE CONTROLLER BITE PROCEDURE FOUND NR 2 LOW IN FLOW FAULT FIM 21-31-00-815-803/REF TS-B767-2150-00007 FOUND LEFT PACK "LO" FLOW 25% LESS THAN RIGHT PACK. REMOVED & REPLACED LEFT PACK FLOW CONTROL AND S.O. VALVE REF AMM 21-51-01-401. AFTER REPLACEMENT.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.