Service difficulty report · Apu · Boeing 737890

Difficulty date
January 28, 2020
Submitted
January 29, 2020
Operation
Air carrier
Aircraft
N506AS
Make and model
Boeing 737890
Aircraft serial
35690
Aircraft time
43,923 hours, 13,392 cycles
Part
Apu
Part number
38007021
Part serial
P7482
Condition
Reads High
Part time
14,679 hours, 23,650 cycles
Stage of operation
NR
How discovered
O
Nature of condition
M, 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 CT5ATP EGT HAS SHIFTED ABOVE THE 593 DEGREE THRESHOLD AND REMAINS ABOVE THE 605 THRESHOLD. GROUNDED - YES. REMOVED AND REPLACED APU IAW AMM 49-11-00-000-803.