Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
July 14, 2019
Submitted
July 16, 2019
Operation
Air carrier
Aircraft
N419AS
Make and model
Boeing 737990ER
Aircraft serial
41734
Aircraft time
25,037 hours, 8,160 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
NR
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

RIGHT PACK LIGHT ILLUMINATES DURING RECALL. EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. GROUNDED - YES. PACK/ZONE TEMP CONTROLLER BITE TEST DONE REF AMM 21-51-00-700-803. NO FAULTS AND GROUND VERIFICATION SUCCESSFUL.