Avionics Master
No failure report names the avionics master. 7 FAA approvals let 3 companies make a replacement avionics master, American Eurocopter LLC holding the most (4).
Approved replacement parts 7 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a avionics master and sell it as an approved part for the models named. These are the companies holding such approvals for a avionics master:
For these models most: Airbus Helicopters EC-135 now H135 (6), Cessna 500 Citation I (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Airbus Helicopters, INC. | Avionics Master Switch System 135A73-0011-01 | Modification Part | Airbus Helicopters... EC135 P1, T1 | 2018-01-16 | current |
| Airbus Helicopters, INC. | Avionics Master Switch System 135A73-0011-02 | Modification Part | Airbus Helicopters... EC135 P1, T1 | 2018-01-16 | current |
| Sierra Industries, LTD. | Avionics Master Switch, Kit SI250 Series | Modification Part | Cessna 500 | 2006-06-22 | current |
| American Eurocopter LLC | Avionics Master Switch System 135A73-0011-01 | Modification Part | Eurocopter Deutschland EC135 P1, T1 | 2003-08-10 | current |
| American Eurocopter LLC | Avionics Master Switch System 135A73-0011-02 | Modification Part | Eurocopter Deutschland EC135 P1, T1 | 2003-08-10 | current |
| American Eurocopter LLC | Avionics Master Switch System 135A73-0011-02 | Modification Part | Eurocopter Deutschland EC135 P1, T1 | 2003-08-10 | current |
| American Eurocopter LLC | Avionics Master Switch System 135A73-0011-01 | Modification Part | Eurocopter Deutschland EC135 P1, T1 | 2003-08-10 | 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.