Service difficulty report · Warning System · Boeing 737890

Difficulty date
July 4, 2019
Submitted
July 9, 2019
Operation
Air carrier
Aircraft
N517AS
Make and model
Boeing 737890
Aircraft serial
35197
Aircraft time
40,342 hours, 11,943 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

ON RECALL, LEFT PACK LIGHT ILLUMINATED, EXTINGUISHES ON RECALL. GROUNDED - YES. REF AMM TASK 21-61-00-700-806-002, NO.1 PZTC BITE PREV FLT LOGGED "THIS PACK TCV" FAULT. GVI TCV VALVE INTEGRITY OK. FAULT RESETABLE, BOTH PZTC BITE VERIFY GOOD W/O FAULTS. LEFT PACK OPS CHECKED NORMAL IN ALL TEMP RANGE ON GND.