Parts · Instruments and avionics

Dau

36 failure reports named the dau in the last ten years, 124 since 1997, most often on the Embraer EMB-145 ERJ 145; the condition most often found was "failed". 3 FAA approvals let 3 companies make a replacement dau, Rogerson Kratos holding the most (1).

Reports by year

Reports by year, as a table

	reports
1997	2
1998	4
2000	2
2001	6
2002	8
2003	9
2004	6
2005	5
2006	5
2007	8
2008	2
2009	6
2010	4
2011	10
2012	2
2013	6
2015	3
2016	1
2017	1
2018	4
2019	3
2020	1
2021	4
2022	5
2023	1
2024	4
2025	7
2026	5

Which system the reports file it under last ten years

Instruments and avionics17Engine7Electrical power3Fuel system3Heating, ice protection and utility systems3Flight controls2Emergency equipment1

Reports by system, as a table

	reports
Instruments and avionics	17
Engine	7
Electrical power	3
Fuel system	3
Heating, ice protection and utility systems	3
Flight controls	2
Emergency equipment	1

Models most often reporting it last ten years

Embraer EMB-145 ERJ 14527Embraer EMB-135 ERJ 135 and Legacy4Cessna 750 Citation X2Airbus A3191Boeing 7371Learjet 601

Models most reported, as a table

	reports
Embraer EMB-145 ERJ 145	27
Embraer EMB-135 ERJ 135 and Legacy	4
Cessna 750 Citation X	2
Airbus A319	1
Boeing 737	1
Learjet 60	1

How it failed the condition found, last ten years

failed10faulted10malfunctioned4inoperative3abnormal2faulty2unknown2chattering1intermittent1none1

Conditions found, as a table

	reports
failed	10
faulted	10
malfunctioned	4
inoperative	3
abnormal	2
faulty	2
unknown	2
chattering	1
intermittent	1
none	1

Engines most often reporting it

Pratt & Whitney Canada PW305A 1Rolls-Royce AE 3007A1 1

Approved replacement parts 3 parts manufacturer approvals

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

Rogerson Kratos 1Parker Hannifin CORP 1Ametek Aerospace 1

For these models most: Bell 427 (1), Agusta A109 (1).

Maker	Part	Replaces	Fits	Granted	Status
Rogerson Kratos	M427 DAU 166M002-5	427-375-001-109	Bell Helicopter 427	2018-05-21	current
Parker Hannifin CORP	DAU - Data Acquisition Unit 367-352-002	367-352-002	Airbus A380-841, A380-842, A380-861	2015-01-15	current
Ametek Aerospace	DAU 10705B01M06	Agusta P/N 109-0900-76-6A05	Agusta A109S, AW109SP	2011-10-18	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.