Parts · Heating, ice protection and utility systems

Ptu

24 failure reports named the ptu in the last ten years, 71 since 1995, most often on the Airbus A320; the condition most often found was "leaking".

Reports by year

Reports by year, as a table

	reports
1995	1
1996	1
1997	1
2002	3
2003	3
2004	4
2005	7
2006	3
2007	3
2008	2
2009	3
2010	3
2011	3
2012	2
2013	2
2014	4
2015	2
2016	3
2017	1
2018	1
2019	6
2021	2
2022	2
2023	6
2025	2
2026	1

Which system the reports file it under last ten years

Heating, ice protection and utility systems22Flight controls1Airframe structure1

Reports by system, as a table

	reports
Heating, ice protection and utility systems	22
Flight controls	1
Airframe structure	1

Models most often reporting it last ten years

Airbus A32010Airbus A3215Boeing 7373Boeing 7672Airbus A3001Airbus A3191Boeing 7571

Models most reported, as a table

	reports
Airbus A320	10
Airbus A321	5
Boeing 737	3
Boeing 767	2
Airbus A300	1
Airbus A319	1
Boeing 757	1

How it failed the condition found, last ten years

leaking9failed4malfunctioned3overtemp2fault message1faulty1noisy1out of position1overheated1unknown1

Conditions found, as a table

	reports
leaking	9
failed	4
malfunctioned	3
overtemp	2
fault message	1
faulty	1
noisy	1
out of position	1
overheated	1
unknown	1

Engines most often reporting it

CFM International CFM56-5B4/3 1International Aero Engines V2527-A5 1Pratt & Whitney Canada PW150A 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.