Service difficulty report · Web · Boeing 7377H4

Difficulty date
August 17, 2025
Submitted
September 4, 2025
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
70,511 hours, 42,001 cycles
Part
Web
Condition
Corroded
Location
Zone 200
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

CORROSION ON WEB LOCATED BTW BS 440 TO BS 492 AT LEVEL STR 18R AND WL 201 AT FWD CARGO COMPARTMENT. REPLACED WEB AND FASTENERS UPPER WEB LOCATED BTW BS 440 TO BS 492 AT LEVEL STR 18R RBL 70 WL 201 IAW SRM 51-40-02-0G-0 AND DWG 143A8111; SHEET 12; REV.A. AND DWG 143A0081; SHEET 38; REV.B.

More about the Boeing 737-7H4