Block Down
No failure report names the block down. 5 FAA approvals let 2 companies make a replacement block down, Rockwell Collins INC. holding the most (4).
Approved replacement parts 5 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a block down and sell it as an approved part for the models named. These are the companies holding such approvals for a block down:
For these models most: Gulfstream G-IV Gulfstream IV (2), Bombardier CL-600 Challenger and CRJ (1), Bombardier BD-700 Global Express, 5000 and 6000 (1), Bombardier BD-100 Challenger 300 and 350 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Rockwell Collins INC. | Block Down Converter BDC-2000 822-3662-001 | 822-3662-001 | Bombardier Inc. BD-700-1A10, BD-700-1A11 | 2023-09-27 | current |
| Rockwell Collins INC. | Block Down Converter BUC-2000 822-3662-001 | 822-3662-001 | Bombardier BD-100-1A10 Aircraft | 2022-05-26 | current |
| Rockwell Collins INC. | Block Down Converter, BDC-2000 822-3662-001 | 822-3662-001 | Bombardier CL-600-2B16 | 2022-03-02 | current |
| Rockwell Collins INC. | Block Down Converter (BDC-2000) 822-3662-001 | 005-2025-3001 | Gulfstream G-IV | 2020-04-06 | current |
| Astronics Aerosat Corporation | T-311 Block Down Converter (BDC) 005-2025-3001 | 005-2025-3001 | Gulfstream Aerospace... G-IV | 2020-02-09 | 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.