Parts · Rotorcraft systems

Sprag Clutch

3 failure reports named the sprag clutch in the last ten years, 34 since 1998, most often on the Hughes 369 500 series helicopters; the condition most often found was "abnormal".

Reports by year

Reports by year, as a table

	reports
1998	2
1999	2
2000	1
2001	2
2002	5
2004	1
2005	2
2007	1
2008	6
2009	2
2010	1
2011	1
2012	2
2013	2
2015	1
2020	1
2022	1
2026	1

Which system the reports file it under last ten years

Rotorcraft systems3

Reports by system, as a table

	reports
Rotorcraft systems	3

Models most often reporting it last ten years

Hughes 369 500 series helicopters1Robinson R221Robinson R441

Models most reported, as a table

	reports
Hughes 369 500 series helicopters	1
Robinson R22	1
Robinson R44	1

How it failed the condition found, last ten years

abnormal1broken1damaged1

Conditions found, as a table

	reports
abnormal	1
broken	1
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.