Service difficulty report · Warning Message · Boeing 737990ER

Difficulty date
October 2, 2017
Submitted
October 4, 2017
Operation
Air carrier
Aircraft
N493AS
Make and model
Boeing 737990ER
Aircraft serial
41727
Aircraft time
5,760 hours, 1,940 cycles
Part
Warning Message
Condition
False Activation
Location
Rt A/C Pack
Stage of operation
NR
How discovered
9
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

DURING RECALL, THE RT PACK LIGHT ILLUMINATED. EXTINGUISHED WHEN RESET. ACFT GROUNDED. PERFORMED PACK TEMP CONTROL BITE PROCEDURE. FOUND MAINTENANCE MESSAGE IAW AMM 21-62, TASK 801. MAINTENANCE MESSAGE CLEARED AFTER PERFORMING RIGHT RAM AIR EXIT ACTUATOR FAULT ISOLATION IAW FIM 21-62 TASK 854. GROUND VERIFICATION SUCCESSFUL.