Service difficulty report · Control Valve · Boeing 737890

Difficulty date
March 24, 2014
Submitted
March 26, 2014
Operation
Air carrier
Aircraft
N588AS
Make and model
Boeing 737890
Aircraft serial
35685
Aircraft time
24,264 hours, 7,467 cycles
Part
Control Valve
Part number
3966081
Part serial
2983
Condition
Failed
Location
Lt A/C Pack
Part time
24,266 hours, 7,468 cycles
Stage of operation
TX
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

LT PACK OFF FAILS PACK HIGH FLOW INHIBIT TEST, REF FCF CHECKLIST 3.200, PG 31. ACFT GROUNDED. REPLACED LT PACK FLOW CONTROL VALVE AND REINSTALLED MIX MUFF AND COMPRESSOR INLET/OUTLET DUCTS REF MM 21-51-01 AND 21-00-05.