Service difficulty report · Apu · Boeing 737890

Difficulty date
January 4, 2023
Submitted
January 4, 2023
Operation
Air carrier
Aircraft
N529AS
Make and model
Boeing 737890
Aircraft serial
35198
Aircraft time
44,928 hours, 13,226 cycles
Part
Apu
Part number
38007021
Part serial
P8518
Condition
Overtemp
Location
Zone 100
Part time
13,223 hours, 22,523 cycles
Stage of operation
NR
How discovered
9
Nature of condition
J
Precautionary procedure
O

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

What was found

APU TREND DATA SHOWS CT5ATP TEMP IS APPROACHING THE 605 DEGREES THRESHOLD. GROUNDED - YES. REMOVED AND REPLACED APU REFERENCE ASA WORK ORDER# 1932303.