Reu

18 failure reports named the reu in the last ten years, 21 since 1998, most often on the Airbus BD-500; the condition most often found was "failed". 1 FAA approvals let 1 company make a replacement reu, Parker Hannifin CORP holding the most (1).

Reports by year

Reports by year, as a table

	reports
1998	1
1999	2
2017	1
2019	3
2021	1
2022	1
2023	1
2024	3
2025	4
2026	4

Which system the reports file it under last ten years

Flight controls11Instruments and avionics7

Reports by system, as a table

	reports
Flight controls	11
Instruments and avionics	7

Models most often reporting it last ten years

Airbus BD-5004Messerschmitt-Bolkow-Blohm BK 1174Boeing 7373Bombardier BD-100 Challenger 300 and 3502Gulfstream GVI G6501

Models most reported, as a table

	reports
Airbus BD-500	4
Messerschmitt-Bolkow-Blohm BK 117	4
Boeing 737	3
Bombardier BD-100 Challenger 300 and 350	2
Gulfstream GVI G650	1

How it failed the condition found, last ten years

failed10faulted4inoperative2intermittent1malfunctioned1

Conditions found, as a table

	reports
failed	10
faulted	4
inoperative	2
intermittent	1
malfunctioned	1

Approved replacement parts 1 parts manufacturer approvals

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

Parker Hannifin CORP 1

For these models most: Airbus BD-500 (1).

Maker	Part	Replaces	Fits	Granted	Status
Parker Hannifin CORP	REU 491100-1011	C05500026-007	Bombardier BD-500-1A10, BD-500-1A11	2018-03-07	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.