Service difficulty report · Threshold Web · Boeing 7377H4

Difficulty date
August 9, 2025
Submitted
September 8, 2025
Operation
Air carrier
Aircraft
N906WN
Make and model
Boeing 7377H4
Aircraft serial
36887
Aircraft time
57,218 hours, 33,367 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

MULTIPLE SPOTS WITH CORROSION ON ACB DOOR CUTOUT SURROUND THRESHOLD BS787+15 TO BS827+15 RBL25 WL156. REMOVED AND REPLACED ACB SUBTHRESHOLD WEB BS 787 TO BS 847 RBL 25 P/N 146A8123U25; LOT 1613067-1; IAW SRM 51-40-02-0G-0 AND DWG 146A8340.;[02] VERIFIED ALL STEPS COMPLETED

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