SDR SWAA2026030269071

Service difficulty report · Threshold Web · Boeing 7377H4

Difficulty date: February 8, 2026
Submitted: March 2, 2026
Operation: Air carrier
Aircraft: N247WN
Make and model: Boeing 7377H4
Aircraft serial: 32508
Aircraft time: 64,547 hours, 38,979 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
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 ACB DOOR CUTOUT SURROUND THRESHOLD BS 787+18 AND BS 787+13, RBL 27, WL 156. REMOVED AND INSTALLED NEW ACB DOOR CUTOUT SURROUND THRESHOLD AT DISCREPANCY AREA ITEM# 146A8123U25; IAW SRM 53-60-15-0I-1, SRM 53-60-15-1A-1, SRM 51-10-02-0G-0, SRM 51-40-05-0G-0, SRM 51-40-02-0G-0, DWG 146A8340, REV-.

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