Service difficulty report · Threshold Web · Boeing 737924ER

Difficulty date
May 13, 2026
Submitted
May 18, 2026
Operation
Air carrier
Aircraft
N45440
Make and model
Boeing 737924ER
Aircraft serial
33535
Aircraft time
52,790 hours, 18,878 cycles
Part
Threshold Web
Part number
143A812210
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

FWD CARGO DOOR CUTOUT LOWER THRESHOLD WEB HAS SEVERAL AREAS OF CORROSION. COMPLIED WITH ESFR REMOVED CORROSION,ORIGINAL MATERIAL THICKNESS .040 REMOVED .018 REMAINING .022 FOUND TO BE OUT OF LIMITS IAW SRM 53-30-15 AND SRM 53-00-53. REMOVED DAMAGED WEB AND INSTALLED NEW WEB AND NUTPLATES. 1145538.3 IAW BAC DWG 143A8330 REV B AND SRM 51-40-02 LOCATED AND DRILLED IAW SRM 51-40-05.