Service difficulty report · Unknown · Boeing 737890

Difficulty date
November 5, 2023
Submitted
November 9, 2023
Operation
Air carrier
Aircraft
N589AS
Make and model
Boeing 737890
Aircraft serial
35686
Aircraft time
57,510 hours, 17,049 cycles
Part
Unknown
Part number
UNKNOWN
Condition
Unknown
Location
Unknown
Stage of operation
IN
How discovered
V
Nature of condition
J
Precautionary procedure
K

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

What was found

PERFORMED T/C 78273000 INTERROGATE THE FMC CDU FOR ENGINE FAULTS ENG#2 EEC BITE TEST FOUND ENG @2 ECONOMIC FAULT MESSAGE 77-20872 THE TOP LEFT EGT SIGNAL (T495S4) IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.