Parts · Airframe structure

Stringer Splice

981 failure reports named the stringer splice in the last ten years, 2,235 since 1995, most often on the Bombardier CL-600 Challenger and CRJ; the condition most often found was "corroded". 3 FAA approvals let 2 companies make a replacement stringer splice, Spirit Aerosystems INC holding the most (2).

Reports by year

Reports by year, as a table

	reports
1995	5
1996	3
1998	2
2003	2
2004	5
2005	23
2006	128
2007	157
2008	83
2009	85
2010	104
2011	164
2012	139
2013	167
2014	85
2015	102
2016	114
2017	98
2018	73
2019	137
2020	122
2021	108
2022	37
2023	58
2024	66
2025	99
2026	69

Which system the reports file it under last ten years

Airframe structure981

Reports by system, as a table

	reports
Airframe structure	981

Models most often reporting it last ten years

Bombardier CL-600 Challenger and CRJ520Boeing 737142Boeing 76763Airbus A32056Embraer ERJ 170 E170 and E17547Boeing 75743Airbus A31920Airbus A33012Bombardier DHC-8 Dash 8 and Q40012Boeing 74710Embraer EMB-145 ERJ 14510Boeing 7179

Models most reported, as a table

	reports
Bombardier CL-600 Challenger and CRJ	520
Boeing 737	142
Boeing 767	63
Airbus A320	56
Embraer ERJ 170 E170 and E175	47
Boeing 757	43
Airbus A319	20
Airbus A330	12
Bombardier DHC-8 Dash 8 and Q400	12
Boeing 747	10
Embraer EMB-145 ERJ 145	10
Boeing 717	9

How it failed the condition found, last ten years

corroded826cracked101damaged24not reported12none5chafed2unknown2worn2bent1canning1

Conditions found, as a table

	reports
corroded	826
cracked	101
damaged	24
not reported	12
none	5
chafed	2
unknown	2
worn	2
bent	1
canning	1

Engines most often reporting it

International Aero Engines V2527-A5 6General Electric CF34-8C5 1

Approved replacement parts 3 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a stringer splice and sell it as an approved part for the models named. These are the companies holding such approvals for a stringer splice:

Spirit Aerosystems INC 2Seattle Aero LLC 1

For these models most: Boeing 737 (2), Boeing 757 (1).

Maker	Part	Replaces	Fits	Granted	Status
Spirit Aerosystems INC	STRINGER SPLICE ASSY 146A0101-7	146A0101-7	Boeing 737-700 SERIES	2007-03-02	current
Seattle Aero LLC	Stringer Splice, UPPER Panel 757-3503-1, 757-3503-2,...	757-3503-1, 757-3503-2, 757-3503-3,...	Boeing 757-200 Series	2006-10-03	current
Spirit Aerosystems INC	STRINGER SPLICE ASSY 146A0101-7	146A0101-7	Boeing 737-700 SERIES	2006-02-06	current

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.