Parts · Instruments and avionics

Mmr

6 failure reports named the mmr in the last ten years, 9 since 2011, most often on the Airbus A321; the condition most often found was "fault message".

Reports by year

Reports by year, as a table

	reports
2011	2
2014	1
2018	2
2019	1
2020	1
2025	1
2026	1

Which system the reports file it under last ten years

Instruments and avionics5Flight controls1

Reports by system, as a table

	reports
Instruments and avionics	5
Flight controls	1

Models most often reporting it last ten years

Airbus A3213Airbus A3001Airbus A3191Boeing 7171

Models most reported, as a table

	reports
Airbus A321	3
Airbus A300	1
Airbus A319	1
Boeing 717	1

How it failed the condition found, last ten years

fault message1faulted1faulty1malfunctioned1not reported1not seated1

Conditions found, as a table

	reports
fault message	1
faulted	1
faulty	1
malfunctioned	1
not reported	1
not seated	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.