Service difficulty report · Warning Message · Boeing 737990ER

Difficulty date
August 25, 2021
Submitted
August 27, 2021
Operation
Air carrier
Aircraft
N403AS
Make and model
Boeing 737990ER
Aircraft serial
41730
Aircraft time
32,985 hours, 10,649 cycles
Part
Warning Message
Condition
Illuminated
Location
Cockpit Temp
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

CONT CAB "ZONE TEMP"" LIGHT AFTER RECALL. GROUNDED - YES. (RESOLVED ON W/O: 1882902 TASKCARD: N/R-00005 ) VERIFID DISCREPANCY. ACCOMPLISHED BOTH PACK TEMP CONTROLLERS BITE PER TASK 21-61-00-700-806-002 PACK/ZONE TEMPERATURE CONTROLLER BITE TEST . FOUND #2 CONTROLLER LOGGIN FLT DECK TRIM VLV. ABLE TO RESET FAULTS. GROUND RAN BOTH PACKS FOR HALF HR. NO FAULTS RETURNED. SYS OPS NML. TASK 36-00-00-860-801 SUPPLY PRESSURE TO THE PNEUMATIC SYSTEM. TASK 36-00-00-860-803. SUPPLY PRESSURE TO THE PNEUMATIC SYSTEM WITH THE APU CLEAR MEL 21-21G. NO CONFIG CHANGES REQ. SEAMC FELIX NOTIFIED.