SDR UALA2009060101584

Service difficulty report · Shutoff Valve · Boeing 767322

Difficulty date: June 1, 2009
Submitted: June 3, 2009
Operation: Air carrier
Aircraft: N643UA
Make and model: Boeing 767322
Aircraft serial: 25093
Aircraft time: 78,622 hours, 12,627 cycles
Engine: Pwa PW4060
System (JASC): 3610 · Pneumatic Distribution System
Part: Shutoff Valve
Part number: 79027013
Part serial: 418
Condition: Faulty
Location: Bleed Air Sys
Stage of operation: TX
How discovered: O
Nature of condition: O
Precautionary procedure: D

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NR 1 ENGINE BLEED INOPERATIVE. BITE MONITOR FAULTED PRV, PRVC, PRESS SENSOR, HPSOV AND WIRE FAULT. REPLACED CARD M859, NO HELP. INOPED PRSOV. REPLACED HPSOV AND HP CONTROLLER. REACTIVATED PRSOV, RAN ENG. NO BLEED PRESSURE FROM NR 1 ENG INOP'D PRSOV.