Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
May 25, 2018
Submitted
May 29, 2018
Operation
Air carrier
Aircraft
N478AS
Make and model
Boeing 737990ER
Aircraft serial
44105
Aircraft time
11,491 hours, 3,894 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

RIGHT PACK LIGHT ILLUMINATED AND STAYS LIT AFTER RECALL. RIGHT PACK TEMP CLIMBED FROM 55 DEGREES C TO 88 DEGREES C. GROUNDED - YES. ACCOMPLISHED PACK ZONE TEMP CONTROL BITE PER AMM 21-51-00. NO DEFECTS NOTED. RAN RT PACK FOR TEN MINUTES. NO DEFECTS NOTED. OPS CHECK NORMAL PER AMM 21-51-00.