Service difficulty report · Heat Exchanger · Boeing 757251

Difficulty date
April 1, 2025
Submitted
April 2, 2025
Operation
Air carrier
Aircraft
N544US
Make and model
Boeing 757251
Aircraft serial
26491
Aircraft time
87,904 hours, 28,850 cycles
Part
Heat Exchanger
Part number
1942723
Part serial
103525
Condition
Leaking
Part time
94,932 hours, 35,142 cycles
Stage of operation
CL
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

SHIP 5644 -ATB/PRES/DE- DUE TO CABIN PRESSURE CONTROL ISSUE. CORRECTIVE ACTION: R/R OUTFLOW VALVE, CABIN PRESS CONTROL PANEL, AUTO CABIN PRESSURE CONTROLLER 1, AND RIGHT HEAT EXCHANGER. PERFORMED SINGLE PACK CONFIDENCE CHK.