Service difficulty report · Valve · Boeing 737890

Difficulty date
October 19, 2011
Submitted
October 28, 2011
Operation
Air carrier
Aircraft
N589AS
Make and model
Boeing 737890
Aircraft serial
35686
Aircraft time
14,564 hours, 4,724 cycles
Part
Valve
Part number
3214464
Part serial
10972
Condition
Failed
Location
Nr 1 Engine
Part time
8,573 hours, 2,756 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

AFTER TAKEOFF NOTICED BLEED AIR SPLIT AT CLIMB POWER. ACCOMPLISHED BLEED AIR SYSTEM HEALTH CHECK REF MM 36-11-00. HIGH STAGE VALVE FOUND TO BE INTERMITTENT DURING PRESSURE CHECK. REPLACED NR1 ENGINE HIGH STAGE VALVE REF MM 36-11-06, OPS NORMAL DURING TEST. AS PRECAUTIONARY REPLACED HIGH STAGE REGULATOR REF MM 36-11-07 OPS & LEAK CHECKED NORMAL.