Finger Doubler

183 failure reports named the finger doubler in the last ten years, 617 since 1995, most often on the Embraer ERJ 170 E170 and E175; the condition most often found was "corroded". The reports call it "finger doubler", "finger doubler".

Reports by year

Reports by year, as a table

	reports
1995	3
1996	3
1997	4
1998	1
1999	12
2000	40
2001	9
2002	15
2003	17
2004	13
2005	40
2006	41
2007	8
2008	6
2009	4
2010	13
2011	25
2012	37
2013	42
2014	39
2015	62
2016	74
2017	21
2018	26
2019	17
2020	18
2021	4
2022	7
2023	3
2024	12
2025	1

Which system the reports file it under last ten years

Airframe structure183

Reports by system, as a table

	reports
Airframe structure	183

Models most often reporting it last ten years

Embraer ERJ 170 E170 and E17564Embraer ERJ 190 E190 and E19556Mcdonnell Douglas MD-1133Mcdonnell Douglas Aircraft Co MD-8812Boeing 7179Mcdonnell Douglas MD-102Boeing-Vertol 1071Boeing 7371Douglas DC-91

Models most reported, as a table

	reports
Embraer ERJ 170 E170 and E175	64
Embraer ERJ 190 E190 and E195	56
Mcdonnell Douglas MD-11	33
Mcdonnell Douglas Aircraft Co MD-88	12
Boeing 717	9
Mcdonnell Douglas MD-10	2
Boeing-Vertol 107	1
Boeing 737	1
Douglas DC-9	1

How it failed the condition found, last ten years

corroded135detached17cracked6delaminated6chafed5gouged5damaged3debonded3bent1dented1

Conditions found, as a table

	reports
corroded	135
detached	17
cracked	6
delaminated	6
chafed	5
gouged	5
damaged	3
debonded	3
bent	1
dented	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.