Service difficulty report · Heat Exchanger · Boeing 75724APF

Difficulty date
July 12, 2025
Submitted
July 23, 2025
Operation
Air carrier
Aircraft
N434UP
Make and model
Boeing 75724APF
Aircraft serial
25465
Aircraft time
32,520 hours, 21,842 cycles
Engine
Pwa PW2040
Part
Heat Exchanger
Part number
1B1831
Part serial
369
Condition
Inoperative
Location
Engine Oil
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

DURING CLIMB LEFT ENG OIL TEMP IN AMBER BAND. QRH PROCEDURE WITH THROTTLE ALMOST IDLE LOWERED TEMP TO NORMAL RANGE. COMPLETED K ALERT ON BAR CODE T3F18E0071FDT. PERFORMED HIGH POWER ENG RUN RFEF 757 M/M 71-00-00- 501. LEFT ENG OIL TEMP CHKED WITHIN LIMITS.

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