Downlock Switch
91 failure reports named the downlock switch in the last ten years, 550 since 1995, most often on the Cessna 680 Citation Sovereign and Latitude; the condition most often found was "defective".
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 29 |
| 1996 | 28 |
| 1997 | 45 |
| 1998 | 3 |
| 1999 | 1 |
| 2000 | 22 |
| 2001 | 29 |
| 2002 | 26 |
| 2003 | 21 |
| 2004 | 24 |
| 2005 | 28 |
| 2006 | 22 |
| 2007 | 42 |
| 2008 | 18 |
| 2009 | 24 |
| 2010 | 18 |
| 2011 | 14 |
| 2012 | 19 |
| 2013 | 16 |
| 2014 | 18 |
| 2015 | 12 |
| 2016 | 12 |
| 2017 | 14 |
| 2018 | 10 |
| 2019 | 14 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 6 |
| 2025 | 6 |
| 2026 | 10 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Landing gear | 91 |
Models most often reporting it last ten years
Cessna 680 Citation Sovereign and Latitude19Beechcraft B300 King Air 35014Beechcraft C90 King Air C908Beechcraft B200 King Air B2006Cessna 750 Citation X5Piper PA-44 Seminole5Beechcraft 1900 Airliner4Beechcraft C-994Cessna 560 Citation V, Ultra, Encore and Excel4Saab-Fairchild 3403Swearingen SA2272Airbus Helicopters EC 1551
Models most reported, as a table
How it failed the condition found, last ten years
defective15failed13intermittent9faulty7inoperative6false indication4faulted4out of rig4dirty3malfunctioned3
Conditions found, as a table
| reports | |
|---|---|
| defective | 15 |
| failed | 13 |
| intermittent | 9 |
| faulty | 7 |
| inoperative | 6 |
| false indication | 4 |
| faulted | 4 |
| out of rig | 4 |
| dirty | 3 |
| malfunctioned | 3 |
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.