Mast
13 failure reports named the mast in the last ten years, 101 since 1995, most often on the Bell 407; the condition most often found was "corroded". 8 FAA approvals let 6 companies make a replacement mast, Rotair Industries INC holding the most (2). The reports call it "mast", "mast assy", "mast assembly".
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 3 |
| 1996 | 4 |
| 1997 | 7 |
| 1998 | 3 |
| 1999 | 5 |
| 2000 | 13 |
| 2001 | 6 |
| 2002 | 4 |
| 2003 | 5 |
| 2004 | 4 |
| 2005 | 3 |
| 2006 | 1 |
| 2007 | 1 |
| 2008 | 1 |
| 2009 | 2 |
| 2010 | 1 |
| 2011 | 4 |
| 2012 | 11 |
| 2013 | 5 |
| 2014 | 1 |
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 4 |
| 2021 | 2 |
| 2022 | 3 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Rotorcraft systems | 12 |
| 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 | |
|---|---|
| corroded | 10 |
| cracked | 2 |
| loose | 1 |
Engines most often reporting it
Approved replacement parts 8 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a mast and sell it as an approved part for the models named. These are the companies holding such approvals for a mast:
For these models most: Sikorsky S-61 (2), Mcdonnell Douglas MD-10 (2), Embraer EMB-145 ERJ 145 (1), Embraer EMB-135 ERJ 135 and Legacy (1), Cessna 208 Caravan (1), Boeing 757 (1), Bell 214 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Southeast Aerospace, INC. | Mast Assembly PA-221522-323 | Modification Part | Textron Aviation Inc. 208, 208B | 2025-10-30 | current |
| Erickson Incorporated DBA Erickson Air-Crane | Mast Assy. E214-040-090-117 | 214-040-090-117 | Bell 214B | 2017-06-26 | current |
| Gemini Engineering INC | MAST ASSY 346N2023-1 | 346N2023-1 | Boeing 757-200 Series, 757-200CB Series,... | 2009-11-15 | current |
| Seal Dynamics INC | Mast, Drain Assy 145-76592-403SD | Embraer P/N 145-76592-403 | Embraer EMB-135 Series Aircraft, EMB-145... | 2007-07-25 | current |
| Kapco | Mast AHL7294-501 | AHL7294-501 | McDonnell Douglas MD-10-10F, MD-10-30F | 2002-10-07 | current |
| Kapco | Mast AHL7478-503 | AHL7478-503 | McDonnell Douglas MD-10-10F, MD-10-30F | 2002-10-07 | current |
| Rotair Industries INC | Mast Assembly R6145-62023-17 | S6145-62023-17 | Sikorsky S-61L/N/NM (TC1H15) | 1996-03-30 | current |
| Rotair Industries INC | Mast Assembly R6145-62023-13 | S6145-62023-13 | Sikorsky S-61L/N/NM (TC1H15) | 1996-03-30 | 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.