Service difficulty report · Control Valve · Boeing 737890

Difficulty date
June 12, 2021
Submitted
June 16, 2021
Operation
Air carrier
Aircraft
N588AS
Make and model
Boeing 737890
Aircraft serial
35685
Aircraft time
48,366 hours, 14,397 cycles
Part
Control Valve
Part number
3989083
Part serial
11190
Condition
Inoperative
Location
Cockpit Temp
Part time
38,239 hours, 15,117 cycles
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

FLIGHT DECK TEMP EXCESSIVELY HOT, SHOWING 62'C ON CONT CAB. FOLLOWED MEL PROCEDURE WITH NO EFFECT. GROUNDED - YES. REMOVED & REPLACED LEFT AC PACK TEMPERATURE CONTROL VALVE REF B737-800 AMM 21-51-10, OP CHECKS FOR INSTALLATION OK.