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SDR CALA2013090991132

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Service difficulty report · Shutoff Valve · Boeing 777222

FAA SDR system

Difficulty date
September 8, 2013
Submitted
September 10, 2013
Operation
Air carrier
Aircraft
N780UA
Make and model
Boeing 777222
Aircraft serial
26944
Aircraft time
70,185 hours, 12,247 cycles
Engine
Pwa PW4077
System (JASC)
3610 · Pneumatic Distribution System
Part
Shutoff Valve
Condition
Failed
Location
Bleed Air Sys
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

BLEED HIGH PRESSURE SHUTOFF VALVE RT ENGINE BLEED HIGH PRESSURE SHUTOFF VALVE FAILED OPEN OR CLOSED, OR RT AIR SUPPLY & CABIN PRESSURE CONTROLLER FAILURE. LATCHED DESCENT MODE DEPENDENT; HIGH PRESSURE SHUTOFF VALVE RT FAILED CLOSED. DB- AIR SUPPLY & CABIN PRESSURE CONTROLLER RT MSG-3610350 LATCHED DC MODE. MTC MSG 36-10350. HI-PRESS SHUTOFF VLV RT FAILED CLOSED. RT HIGH PRESSURE SHUTOFF VALVE DEFERRED IAW MEL 3611I. MTC PROC C-OUT. RT HIGH PRESSURE VALVE LOCKED IN CLOSED POSITION. PARTS: 646-9036 MR36086: 120-2677 801A50-0006A: 160-0821 AS1895-7-600.