Service difficulty report · Valve · Boeing 737990ER

Difficulty date
October 22, 2021
Submitted
October 26, 2021
Operation
Air carrier
Aircraft
N467AS
Make and model
Boeing 737990ER
Aircraft serial
36362
Aircraft time
27,341 hours, 8,873 cycles
Part
Valve
Part number
3989085
Part serial
21588
Condition
None
Location
Left Ecs Bay
Part time
27,126 hours, 8,761 cycles
Stage of operation
NR
How discovered
V
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

ON RECALL CONT CAB "ZONE TEMP" ILLUMINATED. ON RECALL RESET LIGHT GOES OUT. GROUNDED - YES. REMOVED AND REPLACED CONTROL CABIN TRIM MODULATING VALVE IAW B737-900 AMM 21-61-21-000-801 AND AMM 21-61-21-400-801, GROUND FUNCTIONAL CHECK GOOD IAW AMM 21-61-00-700-806-002, CLEARS MEL 21-21G, CONTROL NUMBER 22020467 REMOVED, SEAMC DAVE NOTIFIED OF MEL MAINTENANCE AND ETOPS MAINTENANCE. NO AIRCRAFT CONFIRGURATION CHANGE.