Du
No failure report names the du. 7 FAA approvals let 3 companies make a replacement du, Diagnostic Solutions International, LLC holding the most (4).
Approved replacement parts 7 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a du and sell it as an approved part for the models named. These are the companies holding such approvals for a du:
For these models most: Bell 407 (3), Bell 429 (1), Bell 412 (1), Airbus Helicopters EC-135 now H135 (1), Agusta Spa AB139 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Diagnostic Solutions International, LLC | DU Kit 17118 | Modification Article | AIRBUS HELICOPTERS... EC135P2, EC135P2+, EC135T2 | 2025-03-03 | current |
| Diagnostic Solutions International, LLC | DU Kit 17118 | Modification Article | Leonardo S.p.a AB139 | 2025-03-03 | current |
| Diagnostic Solutions International, LLC | DU Kit 17118 | Modification Article | Bell Textron Canada Limited 407 | 2025-03-03 | current |
| Diagnostic Solutions International, LLC | DU Kit 17118 | 17118 | Bell 407) Leonardo Helicopters... | 2020-04-21 | current |
| Rogerson Kratos | 429 DU 160M034-11-1 | 429-375-013-107 | Bell Helicopter 429 | 2018-05-21 | current |
| Rogerson Kratos | M412 DU 160M053-3-1 | 412-374-009-105 | Bell Helicopter 412EP, 412EPI | 2018-05-21 | current |
| Keystone Helicopter Corporation | DU Kit 17118 | Modification Part | Bell 407 | 2005-01-31 | 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.