Three Frequency
No failure report names the three frequency. 1 FAA approvals let 1 company make a replacement three frequency, Chippewa Aerospace holding the most (1).
Approved replacement parts 1 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a three frequency and sell it as an approved part for the models named. These are the companies holding such approvals for a three frequency:
For these models most: Bombardier CL-600 Challenger and CRJ (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Chippewa Aerospace | Three Frequency ELT Installation kit 601-2562-01-0001 | Modification Part | Bombardier CL-600-2B19, -2C10, -2D24 Series... | 2008-07-31 | 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.