Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
December 20, 2019
Submitted
December 24, 2019
Operation
Air carrier
Aircraft
N457AS
Make and model
Boeing 737990ER
Aircraft serial
36355
Aircraft time
23,196 hours, 7,519 cycles
Part
Warning Light
Condition
False Activation
Location
Rt A/C Pack
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 MASTER CAUTION RECALL. LIGHT EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. GROUNDED - YES. PERFORMED FIM 21-53 TASK 821, PACK LIGHT IS ON DURING MASTER CAUTION RECALL. PACK LIGHT ON AIR COND. MODULE P5-10, DOES NOT COME ON, THEN THERE AN INTERMITTENT FAULT, OK FOR SERVICE. NO HISTORY ON RIGHT HAND PACK FOR 30 DAYS. PERFORMED FIM TASK 21-62 TASK 801 ALL FAULTS CLEARED AND NO DEFECTS NOTED.