Service difficulty report · Control Valve · Boeing 737990ER

Difficulty date
September 10, 2017
Submitted
September 11, 2017
Operation
Air carrier
Aircraft
N408AS
Make and model
Boeing 737990ER
Aircraft serial
41732
Aircraft time
19,052 hours, 6,180 cycles
Part
Control Valve
Condition
Faulted
Location
Rt A/C Pack
Part time
12,199 hours, 4,052 cycles
Stage of operation
NR
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

AT MASTER CAUTION RECALL RIGHT PACK LIGHT ILLUMINATED. THE LIGHT RESETS AFTER PUSHING MASTER CAUTION RESET. ACFT GROUNDED. T HE SYSTEM RESET BUT THERE IS HISTORY, REMOVED AND REPLACED THE RT TEMPERATURE CONTROL VALVE IAW AMM 21-51-10-000-801, AND 21-51-10-400-801, OPS CHECKED GOOD IAW AMM 21-61-00-700-806-002.