Parts · Engine

Hydromech Unit

6 failure reports named the hydromech unit in the last ten years, 47 since 2000, most often on the Boeing 737; the condition most often found was "failed".

Reports by year

Reports by year, as a table

	reports
2000	2
2001	1
2002	4
2003	10
2004	3
2005	5
2006	1
2007	5
2008	2
2009	2
2010	1
2011	2
2013	2
2015	1
2020	1
2021	2
2022	3

Which system the reports file it under last ten years

Engine4Heating, ice protection and utility systems2

Reports by system, as a table

	reports
Engine	4
Heating, ice protection and utility systems	2

Models most often reporting it last ten years

Boeing 7374Airbus A3301Mcdonnell Douglas MD-111

Models most reported, as a table

	reports
Boeing 737	4
Airbus A330	1
Mcdonnell Douglas MD-11	1

How it failed the condition found, last ten years

failed3defective1stalled1unserviceable1

Conditions found, as a table

	reports
failed	3
defective	1
stalled	1
unserviceable	1

Engines most often reporting it

CFM International CFM56-7B27E 2CFM International CFM56-7B20 1CFM International CFM56 series 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.