Service difficulty report · Heat Exchanger · Boeing 737800*

Difficulty date
September 20, 2025
Submitted
September 22, 2025
Operation
Air carrier
Aircraft
N849SY
Make and model
Boeing 737800*
Aircraft serial
41131
Aircraft time
24,180 hours, 14,514 cycles
Part
Heat Exchanger
Condition
Dirty
Location
Zone 100
Stage of operation
NR
How discovered
O
Nature of condition
B
Precautionary procedure
O

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

What was found

L/H PACK FUME SMELL ( AIR CONDITIONING PACKS (PRESSURIZED) ) R&R OF RECIRCULATION FILTERS ACCOMPLISHED ON W/O 98445 N/R-00001 PERFORMED L/H PACK HEAT EXCHANGER CLEAN IAW AMM 21-51-00 PERFORMED FIM 21-00 TASK 802 NO SIGN OF CABIN FUMES THIS CLEARS MEL

More about the Boeing 737-800