Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
February 15, 2019
Submitted
February 20, 2019
Operation
Air carrier
Aircraft
N433AS
Make and model
Boeing 737990ER
Aircraft serial
41704
Aircraft time
21,092 hours, 6,893 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
TX
How discovered
O
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

LEFT PACK ILLUMINATED DURING RECALL AFTER ENGINE START. PACK LIGHT EXTINGUISHED W/MASTER CAUTION RESET. GROUNDED - YES. TESTED THE PACK/ZONE TEMP CONTROLLER BITE TEST PER AMM 21-61-00-700-806-002. SRADA INLET SENSOR SHOWED A FAULT BUT CLEARED DURING VERIFY. THIS IS CONSIDERED AN INTERMITTENT FAULT.