Exhaust Valve
289 failure reports named the exhaust valve in the last ten years, 519 since 1995, most often on the Cessna 402; the condition most often found was "damaged". 13 FAA approvals let 5 companies make a replacement exhaust valve, Ram Aircraft Limited Partnership holding the most (4).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 1 |
| 1996 | 7 |
| 1997 | 1 |
| 1998 | 11 |
| 1999 | 8 |
| 2000 | 17 |
| 2001 | 21 |
| 2002 | 22 |
| 2003 | 23 |
| 2004 | 12 |
| 2005 | 10 |
| 2006 | 11 |
| 2007 | 13 |
| 2008 | 5 |
| 2009 | 8 |
| 2010 | 9 |
| 2011 | 15 |
| 2012 | 17 |
| 2013 | 6 |
| 2014 | 4 |
| 2015 | 9 |
| 2016 | 212 |
| 2017 | 11 |
| 2018 | 11 |
| 2019 | 22 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 13 |
| 2023 | 5 |
| 2024 | 3 |
| 2025 | 5 |
| 2026 | 2 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Engine | 268 |
| Heating, ice protection and utility systems | 19 |
| Airframe structure | 2 |
Models most often reporting it last ten years
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| damaged | 202 |
| broken | 14 |
| stuck | 14 |
| cracked | 8 |
| failed | 7 |
| sticking | 7 |
| malfunctioned | 5 |
| worn | 5 |
| burned | 4 |
| faulted | 3 |
Engines most often reporting it
Approved replacement parts 13 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a exhaust valve and sell it as an approved part for the models named. These are the companies holding such approvals for a exhaust valve:
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Ram Aircraft Limited Partnership | Exhaust Valve Rotator Cup 1806-1 | TCM P/N 629117 | Teledyne Continental O-470-B, G, K | 2008-01-10 | current |
| Ram Aircraft Limited Partnership | Exhaust Valve Rotator Cup 1806-1 | TCM P/N 652112 | Teledyne Continental O-470-B, G, K | 2008-01-10 | current |
| Ram Aircraft Limited Partnership | Exhaust Valve Rotator Cup 1806-1 | TCM P/N 629117 | Teledyne Continental O-470-B, G, K | 2006-12-03 | current |
| Ram Aircraft Limited Partnership | Exhaust Valve Rotator Cup 1806-1 | TCM P/N 652112 | Teledyne Continental O-470-B, G, K | 2006-12-03 | current |
| Air Repair INC | Exhaust Valve Guide AR20400 | Modification Part | Teledyne Continental W670-6A, -6N, -16 | 2005-04-05 | current |
| Precision Air Parts INC | Exhaust Valve PA-17XV | Lycoming 73111 | Textron Lycoming IO-720-A1A, -D1B, -B1B | 1991-10-09 | current |
| Precision Air Parts INC | Exhaust Valve PA-19XV | Lycoming 74541 | Textron Lycoming O-540-A1A, -A1A5, -A1B5 | 1991-10-09 | current |
| Airmotive Engineering CORP | Exhaust Valve AE-L-74541T | Lycoming 74541 | Lycoming 0-235 series | 1988-07-12 | current |
| Airmotive Engineering CORP | Exhaust Valve AE-L-LW11167T | Lycoming LW11167 | Lycoming 0-235 series | 1988-07-12 | current |
| Airmotive Engineering CORP | Exhaust Valve AEC-637781 | Teledyne Continental P/N 637781 | Teledyne Continental IO-470-D, E, F | 1984-11-15 | current |
| Superior Air Parts INC | Exhaust Valve Guide SL-11626 | Avco Lycoming P/N LW11626 | Avco Lycoming,... 0-235-C1, ClB, C2A | 1984-09-04 | current |
| Superior Air Parts INC | Exhaust Valve Seat SL-60337 | Avco Lvcoming P/N 60337 | Avco Lycoming,... 0-235-F, G, J | 1984-09-04 | current |
| Superior Air Parts INC | Exhaust Valve SL-11634 | Avco Lycoming P/N LW11634 | Avco Lycoming,... 0-235-F, G, J | 1984-09-04 | 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.