Service difficulty report · Control Module · Boeing 737890

Difficulty date
March 29, 2017
Submitted
March 31, 2017
Operation
Air carrier
Aircraft
N558AS
Make and model
Boeing 737890
Aircraft serial
35177
Aircraft time
41,070 hours, 12,037 cycles
Part
Control Module
Part number
693732478
Part serial
D02053
Condition
Faulted
Location
Cabin Temp
Part time
72,483 hours, 35,939 cycles
Stage of operation
TX
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

AFTER ENGINE START, PRESSED THE MASTER CAUTION, AIR CONDITION LIGHT AND ALL 3 ZONE TEMP LIGHTS ON OVERHEAD. ACFT GROUNDED. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER LT & RT BITE IAW AMM 21-61-00-700-806-002. CONTROLLERS SHOW SELECTOR , FLT DECK, ZONE FAULTS. RESET FAULTS. TAGGED TWO CIRCUIT BREAKERS. REMOVED & REPLACED THE TEMP CONTROL MODULE IAW AMM 21-61-15-400-801. RESET THE CIRCUIT BREAKERS. OPS TESTED NORMAL.