Parts · Airframe structure

Threshold Web

71 failure reports named the threshold web in the last ten years, 74 since 1996, most often on the Boeing 737; the condition most often found was "corroded".

Reports by year

Reports by year, as a table

	reports
1996	3
2017	1
2018	3
2019	4
2020	1
2022	13
2023	1
2024	2
2025	24
2026	22

Which system the reports file it under last ten years

Airframe structure71

Reports by system, as a table

	reports
Airframe structure	71

Models most often reporting it last ten years

Boeing 73768Airbus A3193

Models most reported, as a table

	reports
Boeing 737	68
Airbus A319	3

How it failed the condition found, last ten years

corroded68cracked2damaged1

Conditions found, as a table

	reports
corroded	68
cracked	2
damaged	1

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.