Parts · Engine

Buffer Valve

3 failure reports named the buffer valve in the last ten years, 3 since 2018, most often on the Airbus A321; the condition most often found was "failed".

Reports by year

Reports by year, as a table

	reports
2018	1
2022	1
2025	1

Which system the reports file it under last ten years

Engine2Heating, ice protection and utility systems1

Reports by system, as a table

	reports
Engine	2
Heating, ice protection and utility systems	1

Models most often reporting it last ten years

Airbus A3212Boeing 7171

Models most reported, as a table

	reports
Airbus A321	2
Boeing 717	1

How it failed the condition found, last ten years

failed1leaking1used1

Conditions found, as a table

	reports
failed	1
leaking	1
used	1

Engines most often reporting it

International Aero Engines PW1133GA-JM 2

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.