Service difficulty report · Spar · Boeing 737724

Difficulty date
December 20, 2025
Submitted
December 23, 2025
Operation
Air carrier
Aircraft
N13720
Make and model
Boeing 737724
Aircraft serial
28939
Aircraft time
81,363 hours, 28,714 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Part number
112A21013
Condition
Corroded
Location
Zone 500
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

FOUND CORROSION AT LT WING FRONT SPAR AT IFSS 120, BOOST PUMP LOCATION. REPAIRED THE LT WING FRONT SPAR AT IFSS 120 BOOST PUMP LOCATION, IAW ECRA 5720-03588.