Service difficulty report · Warning Message · Boeing 737890

Difficulty date
November 19, 2019
Submitted
November 26, 2019
Operation
Air carrier
Aircraft
N590AS
Make and model
Boeing 737890
Aircraft serial
35687
Aircraft time
45,107 hours, 13,598 cycles
Part
Warning Message
Condition
False Activation
Location
Lt 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

ON MASTER CAUTION RECALL WE GET A LEFT PACK ON THAT RESETS ON MASTER CAUTION RESET. GROUNDED - YES. PERFORMED B737-800 FIM 21-53 TASK 821. RAM AIR ACT FAULTS, CLEARED FAULT, AND RETESTED. FAULT DID NOT RETURN, OK FOR SERVICE.