Transcowl
59 failure reports named the transcowl in the last ten years, 75 since 2009, most often on the Bombardier CL-600 Challenger and CRJ; the condition most often found was "cracked". 10 FAA approvals let 1 company make a replacement transcowl, Mra Systems, LLC holding the most (10).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 2009 | 1 |
| 2010 | 3 |
| 2011 | 3 |
| 2012 | 1 |
| 2013 | 3 |
| 2014 | 2 |
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 4 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 25 |
| 2025 | 14 |
| 2026 | 4 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Engine | 55 |
| Airframe structure | 4 |
Models most often reporting it last ten years
Models most reported, as a table
| reports | |
|---|---|
| Bombardier CL-600 Challenger and CRJ | 56 |
| Boeing 767 | 2 |
| Boeing 757 | 1 |
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| cracked | 36 |
| chafed | 4 |
| loose | 4 |
| damaged | 3 |
| corroded | 2 |
| sheared | 2 |
| worn | 2 |
| dented | 1 |
| gouged | 1 |
| open | 1 |
Engines most often reporting it
Approved replacement parts 10 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a transcowl and sell it as an approved part for the models named. These are the companies holding such approvals for a transcowl:
For these models most: Airbus A321 (10), Airbus A320 (10).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Mra Systems, LLC | Transcowl Assembly 612C4100-279 | 612C4100-279 | Airbus SAS A320-251N, A320-252N, A320-253N | 2025-03-07 | current |
| Mra Systems, LLC | Transcowl Assembly 612C4100-269 | 612C4100-269 | Airbus SAS A320-251N, A320-252N, A320-253N | 2025-03-07 | current |
| Mra Systems, LLC | Transcowl Assembly 612C4100- 259 | 612C4100-259 | Airbus SAS A320-251N, A320-252N, A320-253N | 2024-08-14 | current |
| Mra Systems, LLC | Transcowl Assembly 612C4100-249 | 612C4100-249 | Airbus SAS A320-251N, A320-252N, A320-253N | 2024-08-14 | current |
| Mra Systems, LLC | Transcowl Assembly 612C4100- 139 | 612C4100-139 | Airbus SAS A320-251N, A320-252N, A320-253N | 2023-09-12 | current |
| Mra Systems, LLC | Transcowl Assembly 612C4100-129 | 612C4100-129 | Airbus SAS A320-251N, A320-252N, A320-253N | 2023-09-12 | current |
| Mra Systems, LLC | Transcowl Assembly 612C4100-199 | 612C4100-199 | Airbus SAS A320-251N, A320-252N, A320-253N | 2023-09-12 | current |
| Mra Systems, LLC | Transcowl Assembly 612C4100-149 | 612C4100-149 | Airbus SAS A320-251N, A320-252N, A320-253N | 2023-09-12 | current |
| Mra Systems, LLC | Transcowl Assembly 612C4100-189 | 612C4100-189 | Airbus SAS A320-251N, A320-252N, A320-253N | 2023-09-12 | current |
| Mra Systems, LLC | Transcowl Assembly 612C4100- 159 | 612C4100-159 | Airbus SAS A320-251N, A320-252N, A320-253N | 2023-09-12 | 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.