Service difficulty report · Warning System · Boeing 737890

Difficulty date
February 14, 2019
Submitted
February 20, 2019
Operation
Air carrier
Aircraft
N512AS
Make and model
Boeing 737890
Aircraft serial
39043
Aircraft time
40,225 hours, 12,091 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 HAND PACK LIGHT ILLUMINATES ON RE-CALL AND EXTINGUISHES WHEN MASTER CAUTION "PUSH TO RESET" IS PUSHED. GROUNDED - YES. RELEASED PER MEL 21-32B. RIGHT HAND PACK PRIMARY TEMP CONTROL INOP. NR 2 PACK/ZONE TEMP CTRLR SHOWS "TCV THIS PACK" FAULT ON PREV FLT & BIT. VERIFY - PASSES. RESET FAULT. FAULT DID NOT RETURN. BITE TEST NR 2 PACK/ZONE TEMP CTRLR SEVERAL TIMES GOOD. REF AMM 21-51-00. GND VERIFICATION GOOD.