Dual Rockwell
No failure report names the dual rockwell. 2 FAA approvals let 2 companies make a replacement dual rockwell, Learjet INC 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 dual rockwell and sell it as an approved part for the models named. These are the companies holding such approvals for a dual rockwell:
For these models most: Learjet 60 (1), Boeing 737 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Learjet INC | Dual Rockwell Collins RTU-4220 Radio Tuning Units (RTU)... M100264ICT | Modification Part | Learjet 60 | 2004-12-20 | current |
| Hollingsead International (No Longer Have Pma Production Approval) | Dual Rockwell Collins Global Navigation and Landing Unit... 2642-01 | 2642-01 | Boeing 737-300, 737-400, 737-500 | 2002-03-13 | 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.