Service difficulty report · Inverter · Boeing 757231

Difficulty date
October 19, 2025
Submitted
October 21, 2025
Operation
Air carrier
Aircraft
N721TW
Make and model
Boeing 757231
Aircraft serial
29954
Aircraft time
92,934 hours, 23,952 cycles
System (JASC)
2422 · AC Inverter
Part
Inverter
Part number
7077604
Part serial
579
Condition
Odor
Location
Zone 200
Part time
58,057 hours, 23,148 cycles
Stage of operation
CR
How discovered
O
Nature of condition
B
Precautionary procedure
A

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

What was found

DIV/DE- TO SLC DUE TO ELECTRICAL SMELL IN THE FLIGHT DECK AND STANDBY INVERTER MESSAGE. REPLACED STANDBY INVERTER.