Service difficulty report · Unknown · Boeing 737990ER

Difficulty date
October 18, 2023
Submitted
October 23, 2023
Operation
Air carrier
Aircraft
N440AS
Make and model
Boeing 737990ER
Aircraft serial
41705
Aircraft time
37,484 hours, 11,792 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

REF TC 78273000 ENG 1 ECON FAULT 77-20871 THE TOP LEFT EGT SIGNAL IS OUT OF RANGE (T495S4). GROUNDED - YES. ON DEFERRAL.