Service difficulty report · Control Valve · Boeing 737890

Difficulty date
August 9, 2013
Submitted
August 13, 2013
Operation
Air carrier
Aircraft
N508AS
Make and model
Boeing 737890
Aircraft serial
35691
Aircraft time
19,328 hours, 6,032 cycles
Part
Control Valve
Condition
Malfunctioned
Location
Lt A/C Pack
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

LEFT PACK LIGHT ILLUMINATES ON RECALL EXTINGUISHES WITH MASTER CAUTION RESET. ACFT GROUNDED. BITE CHECK LT PACK CONTROLLER IAW AMM 21-31-00-700-802. FOUND TCV FAULT. CLEARED FAULT AND RETESTED. NO FURTHER FAULTS AND NO MX HISTORY WITHIN THE PAST 10 DAYS.