Service difficulty report · Pressure Switch · Boeing 757224

Difficulty date
January 4, 2021
Submitted
January 4, 2021
Operation
Air carrier
Aircraft
N12125
Make and model
Boeing 757224
Aircraft serial
28967
Aircraft time
84,526 hours, 20,672 cycles
Part
Pressure Switch
Condition
Faulted
Location
Apu Oil
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

APU OIL QTY EICAS S THE APU OIL QUANTITY IS LOW NOTE: APU AUTO EVENT ALSO-APU OIL ADD ON EICAS STATUS PAGE ON ARRIVAL SERVICED APU OIL, RAN APU AND TWICE WAS AUTO SHUTDOWN. BITE THE CONTROLLER FAULTED LOW OIL PRESSURE SWITCH. REPLACE OIL PRESSURE SWITCH AND ALSO REPLACED APU OIL QUANTITY TRANSMITTER, RAN APU AND RAN OK. MM REF ARE TASK 49-94-02-402-008 AND TASK 49-49-04-402-010.