Service difficulty report · Warning System · Boeing 737890

Difficulty date
November 2, 2011
Submitted
November 4, 2011
Operation
Air carrier
Aircraft
N559AS
Make and model
Boeing 737890
Aircraft serial
35178
Aircraft time
19,373 hours, 5,879 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
TX
How discovered
O
Nature of condition
N
Precautionary procedure
K

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

What was found

RT PACK LIGHT ILLUMINATED ON MASTER CAUTION RECALL. LIGHT STAYS OFF AFTER RESET. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST IAW M/M 21 61 00 700 806 002. FOUND RT CONTROLLER SHOWING RAM AIR ACR FAILURE. PERFORMED VERIFY AND RESET. NO RT PACK LIGHT ON RECALL NOW. RAN RT PACK PER M/M TASK 21 53 00 810 804 FOR INITIAL EVALUATION. UNABLE TO DUPLICATE.