Service difficulty report · Heat Exchanger · Boeing 777223

Difficulty date
January 18, 2024
Submitted
January 23, 2024
Operation
Air carrier
Aircraft
N755AN
Make and model
Boeing 777223
Aircraft serial
30263
Aircraft time
84,641 hours, 10,902 cycles
Part
Heat Exchanger
Part number
8102102
Part serial
2014100014
Condition
Inoperative
Location
Zone 100 - Fuse
Part time
5,525 hours, 675 cycles
Stage of operation
DE
How discovered
O
Nature of condition
B
Precautionary procedure
K

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

What was found

AIRCRAFT WAS GROUNDED: A SOF EVENT DUE TO DIRTY SOCK SMELL ON DESCENT. **SUPPLEMENTAL FOR (AALA202401197973): REMOVE AND REPLACED OZONE CONVERTER (AALA202401197973) PER AMM 21-73-01; REMOVE AND REPLACED DUAL HEAT EXCHANGER (AALA202401230387) PER AMM 21-52-01; REMOVE AND REPLACED CONDENSER (AALA202401234057) PER AMM 21-52-03 AND REMOVE AND REPLACED (ACM) AIR CYCLE MACHINE (AALA202401237496) PER AMM 21-52-02. RIGHT HAND PACK OPERATIONAL CHECK GOOD. **(CLOSED).