Processing Unit
30 failure reports named the processing unit in the last ten years, 72 since 1997, most often on the Boeing 737; the condition most often found was "failed".
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1997 | 1 |
| 2007 | 1 |
| 2008 | 5 |
| 2009 | 7 |
| 2010 | 2 |
| 2011 | 9 |
| 2012 | 4 |
| 2013 | 4 |
| 2014 | 5 |
| 2015 | 4 |
| 2016 | 1 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 4 |
| 2024 | 6 |
| 2026 | 3 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Fuel system | 18 |
| Instruments and avionics | 9 |
| Landing gear | 2 |
| Airframe structure | 1 |
Models most often reporting it last ten years
How it failed the condition found, last ten years
failed10faulty8faulted4malfunctioned4smoke2intermittent1unreliable1
Conditions found, as a table
| reports | |
|---|---|
| failed | 10 |
| faulty | 8 |
| faulted | 4 |
| malfunctioned | 4 |
| smoke | 2 |
| intermittent | 1 |
| unreliable | 1 |
Engines most often reporting it
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.