Flapper Valve
20 failure reports named the flapper valve in the last ten years, 145 since 1995, most often on the Embraer EMB-145 ERJ 145; the condition most often found was "leaking". 12 FAA approvals let 7 companies make a replacement flapper valve, Pma Design & Manufacturing holding the most (3).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 2 |
| 1997 | 3 |
| 1998 | 1 |
| 2001 | 4 |
| 2002 | 1 |
| 2003 | 4 |
| 2004 | 2 |
| 2005 | 3 |
| 2006 | 5 |
| 2007 | 12 |
| 2008 | 9 |
| 2009 | 5 |
| 2010 | 9 |
| 2011 | 11 |
| 2012 | 12 |
| 2013 | 27 |
| 2014 | 14 |
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2025 | 3 |
| 2026 | 1 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Fuel system | 8 |
| Heating, ice protection and utility systems | 8 |
| Engine | 3 |
| Cabin, seats and restraints | 1 |
Models most often reporting it last ten years
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| leaking | 4 |
| damaged | 3 |
| cracked | 2 |
| stuck | 2 |
| broken | 1 |
| defective | 1 |
| failed | 1 |
| faulted | 1 |
| faulty | 1 |
| malfunctioned | 1 |
Engines most often reporting it
Approved replacement parts 12 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a flapper valve and sell it as an approved part for the models named. These are the companies holding such approvals for a flapper valve:
For these models most: Dornier Luftfahrt Gmbh 328 (5), Dehavilland DHC-6 (2), Embraer EMB-120 (1), Bombardier CL-600 Challenger and CRJ (1), Boeing 767 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Airtomic - A Dover Company (Formerly Cook Airtomic) | Flapper Valve Sub-Assy AIR25286 | 1621M68G01 | CFM International CFM56-2, CFM56-2A, CFM56-2B | 2023-08-30 | current |
| Pma Design & Manufacturing | Flapper Valve Pad PDMC6PF1157-33 | C6PF1157-33 | Viking Air Limited DHC-6-400 | 2020-03-25 | current |
| Circor Aerospace, INC. | Flapper Valve Outer/ Feeder Tank ZCV175-1 | ZCV175-1 | Dornier 328-100 | 2015-05-03 | current |
| Circor Aerospace, INC. | Flapper Valve Inn/Outer Feeder Tank ZCV176 | ZCV176 | Dornier 328-100 | 2015-05-03 | current |
| Pma Design & Manufacturing | Flapper Valve Pad PDMC6PF1157-33 | C6PF1157-33 | DeHavilland Viking Air Ltd) (DHC-6-100, 200, 300 series | 2009-08-10 | current |
| Pma Design & Manufacturing | Flapper Valve Assembly PDMC6PF1157-5 | C6PF1157-5 (Heroux, Inc.) | deHavilland DHC-6-100, -200, -300 series | 2006-01-12 | current |
| Circle Seal Controls INC | Flapper Valve Outer/Feader Tank ZCV 175-1 | Dornier ZCV 175-1 | Dornier-Werke 328-100 | 1996-11-05 | current |
| Circle Seal Controls INC | Flapper Valve Inner/Outer Tank ZCV 176 | Dornier ZCV 176 | Dornier-Werke 328-100 | 1996-11-05 | current |
| Whittaker Controls INC | Flapper Valve 320995-4 | Boeing S210T170-43 | Boeing 767-200, -300 | 1995-07-25 | current |
| Parker Hannifin CORP | Flapper Valve 1111-548391 | Bombardier Canadair 1111-548-391 | Bombardier, Inc. CL600-2B19 | 1995-03-26 | current |
| Zevco INC | Flapper Valve (Outer Feeder) ZCV 175-1 | Dornier ZCV 175-1 | Dornier-Werke 328-100 | 1994-10-31 | current |
| Parker Hannifin CORP | Flapper Valve 2770138-101 | Embraer 2770138-101 | Embraer Empresa EMB-120 | 1992-08-26 | 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.