Service difficulty report · Valve · Boeing 737990ER

Difficulty date
November 19, 2016
Submitted
November 28, 2016
Operation
Air carrier
Aircraft
N468AS
Make and model
Boeing 737990ER
Aircraft serial
41735
Aircraft time
9,577 hours, 3,157 cycles
Part
Valve
Part number
3989083
Part serial
10459
Condition
Failed
Location
Rt A/C Pack
Part time
30,200 hours, 9,961 cycles
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

RIGHT A/C PACK LIGHT ILLUMINATED ON RECALL AND EXTINGUISHED WITH MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED RIGHT PACK, ZONE TEMP CONTROLLER BITE TEST IAW AMM 21-60-00. NO FAULTS. LIGHT REMAINS EXTINGUISHED ON RECALL. REMOVED AND REPLACED RIGHT TEMPERATURE CONTROL VALVE. LEAK CHECK GOOD IAW 21-51-10.