Switch Duct
No failure report names the switch duct. 3 FAA approvals let 2 companies make a replacement switch duct, Hartzell Engine Technologies LLC holding the most (2).
Approved replacement parts 3 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a switch duct and sell it as an approved part for the models named. These are the companies holding such approvals for a switch duct:
For these models most: Piper PA-34 Seneca (3).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Hartzell Engine Technologies LLC | Switch Duct Adjust 4759 | Piper 688-415 | Piper PA-34-220T | 2013-02-24 | current |
| Hartzell Engine Technologies LLC | Switch Duct Adjust 4759 | Piper 688-415 | Piper PA-34-220T | 2010-10-21 | current |
| Janaero Devices | Switch Duct Adjust 4759 | Piper 688-415 | Piper PA-34-220T | 1994-10-05 | 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.