Service difficulty report · Threshold Web · Boeing 7377H4

Difficulty date
August 26, 2025
Submitted
October 1, 2025
Operation
Air carrier
Aircraft
N909WN
Make and model
Boeing 7377H4
Aircraft serial
32458
Aircraft time
56,758 hours, 34,420 cycles
Part
Threshold Web
Condition
Corroded
Location
Zone 100
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 AFT CARGO COMPARTMENT DOOR CUT-OUT SUB THRESHOLD WEB FROM STA 807+12 TO 827+13; RBL 27 TO RBL 20; WL 156. REMOVED AND REPLACED NEW ON AFT CARGO COMPARTMENT DOOR CUT-OUT SUB-THRESHOLD WEB FROM BS794 TO BS847 RBL 20 TO RBL27 IAW SRM 51-40-02 AND DWG 146A8340 0009 REV A.

More about the Boeing 737-7H4