Cmu Installation
No failure report names the cmu installation. 2 FAA approvals let 2 companies make a replacement cmu installation, L2 Aviation holding the most (1).
Approved replacement parts 2 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a cmu installation and sell it as an approved part for the models named. These are the companies holding such approvals for a cmu installation:
For these models most: Boeing 747 (1), Boeing 737 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| L2 Aviation | CMU Installation/Modification Kit 1510-2322-500-1 (386-0191-000) | Modification Part | Boeing 747-400 Series | 2014-06-11 | current |
| Electronic Cable Specialists | CMU Installation Kit 90603-501 | Modification Part | Boeing 737-700 Series, 737-800 Series | 2009-06-10 | 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.