Service difficulty report · Warning System · Boeing 737890

Difficulty date
March 11, 2020
Submitted
March 12, 2020
Operation
Air carrier
Aircraft
N579AS
Make and model
Boeing 737890
Aircraft serial
35187
Aircraft time
49,479 hours, 14,672 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

LH PACK LIGHT ILLUMINATES ON RECALL EXTINGUISHES ON RESET. GROUNDED - YES. FOUND L/H RAM AIR ACT FAULT. WAS ABLE TO RESET. A/C CHECKED AND RELEASED IAW MEL 21-32B. ACCOMPLISHED PZTC BITE TEST, NO FAULT SHOWS FROM PREVIOUS FLIGHT. NO FAULT FOUND DURING TEST. REF B737-800 FIM 21-62 TASK 801. A/C RELEASED FROM MEL 21-32B.