Service difficulty report · Filter · Boeing 737990ER

Difficulty date
May 15, 2017
Submitted
May 17, 2017
Operation
Air carrier
Aircraft
N493AS
Make and model
Boeing 737990ER
Aircraft serial
41727
Aircraft time
4,113 hours, 1,388 cycles
Part
Filter
Part number
412A160541
Condition
Clogged
Location
Cabin Temp
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

FWD AND AFT CABIN TEMP CONTROLLERS ERRATIC. ACFT GROUNDED. FOUND FWD & AFT CABIN TEMP SENSOR FILTERS CLOGGED. REMOVED AND REPLACED BOTH FILTERS IAW AMM 21-61-06.