Service difficulty report · Heat Exchanger · Boeing 737823

Difficulty date
May 9, 2023
Submitted
May 12, 2023
Operation
Air carrier
Aircraft
N878NN
Make and model
Boeing 737823
Aircraft serial
40768
Aircraft time
34,452 hours, 14,471 cycles
Part
Heat Exchanger
Part number
1828203
Part serial
26457
Condition
Inoperative
Location
Zone 400
Part time
8,125 hours, 3,745 cycles
Stage of operation
CR
How discovered
V
Nature of condition
J
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: LEFT WING-BODY OVERHEAT LIGHT ILLUMINATED AT CRUISE POWER. PERFORMED NON-NORMAL CHECKLIST IGHT WENT OUT. REPLACED L/H HEAT EXCHANGER.