8 failure reports named the mixer box in the last ten years, 55 since 1997, most often on the Airbus A320; the condition most often found was "contaminated". 2 FAA approvals let 1 company make a replacement mixer box, Triumph Controls INC holding the most (2).
Reports by year
Reports by year, as a table
reports
1997
1
2000
1
2001
9
2002
9
2003
19
2005
4
2006
1
2007
3
2017
1
2018
1
2020
1
2021
1
2024
1
2025
2
2026
1
Which system the reports file it under last ten years
contaminated2cracked2failed1faulty1odor1out of adjust1
Conditions found, as a table
reports
contaminated
2
cracked
2
failed
1
faulty
1
odor
1
out of adjust
1
Approved replacement parts 2 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a mixer box and sell it as an approved part for the models named. These are the companies holding such approvals for a mixer box:
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.
