# SDR UALA2010072302629

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2010
- Submitted: July 23, 2010
- Operation: Air carrier
- Aircraft: [N669UA](https://openairdocs.org/aircraft/N669UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 30025
- Aircraft time: 40,226 hours, 10,688 cycles
- Engine: Pwa PW4056
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 7732887810
- Part serial: 107
- Condition: Malfunctioned
- Location: Bleed Air Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010072302629

## Discrepancy

LOST CABIN PRESSURE MOMENTARILY. DUE TO NO CONCLUSIVE FIX FOR LOSS OF PRESSURIZATION, ACFT HAD A DIAGNOSTIC FLT FLOWN BY THE EG TEST CREW TO CHECK THE OPERATION OF THE PACK-BLEED-PRESSURIZATION CONTROL SYS. ACP'D ON FLT 9829-25. PERFORMED MCDP TEST LAST FLIGHT FAULT, FOUND MESSAGE L-V NAV  FAIL ADC SYS R. LT PACK, HOT AIR TUBE ATTACHED TO HEAT EXCHANGER CONDENSER ASSY HAS WORN HOSE ATTACHMENT SECTIONS. REPLACED WORN HOSE ATTACH SECTIONS. LEAK CHECK GOOD. ALSO REPLACED ADC.

---
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.