Rheostat
10 failure reports named the rheostat in the last ten years, 90 since 1995, most often on the Cessna 560 Citation V, Ultra, Encore and Excel; the condition most often found was "failed". 64 FAA approvals let 9 companies make a replacement rheostat, Aviation Specialties Unlimited INC holding the most (21).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 1 |
| 1996 | 3 |
| 1997 | 1 |
| 1998 | 3 |
| 1999 | 3 |
| 2000 | 4 |
| 2001 | 9 |
| 2002 | 12 |
| 2003 | 6 |
| 2004 | 8 |
| 2005 | 5 |
| 2006 | 5 |
| 2007 | 3 |
| 2008 | 4 |
| 2009 | 2 |
| 2010 | 4 |
| 2011 | 2 |
| 2012 | 2 |
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 3 |
| 2021 | 1 |
| 2023 | 1 |
| 2025 | 2 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Electrical power | 9 |
| Airframe structure | 1 |
Models most often reporting it last ten years
How it failed the condition found, last ten years
failed4burned2cracked1inoperative1shorted1unknown1
Conditions found, as a table
| reports | |
|---|---|
| failed | 4 |
| burned | 2 |
| cracked | 1 |
| inoperative | 1 |
| shorted | 1 |
| unknown | 1 |
Engines most often reporting it
Approved replacement parts 64 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a rheostat and sell it as an approved part for the models named. These are the companies holding such approvals for a rheostat:
Aviation Specialties Unlimited INC 21Pacific Scientific, Oeco 14Oeco LLC 11Worthington Aviation 9Servo Instrument CORP 3Machen INC 2Ge Aviation Systems LLC (Formerly Smiths and Barbar Coleman) 2Pma Aeroparts LLC 1Geneva Aviation 1
For these models most: Boeing 747 (15), Airbus Helicopters AS350 AStar (Écureuil), now H125 (11), Israel Aircraft Industries 1124 (8), Boeing 737 (7), Boeing 767 (6), Boeing 757 (6), Airbus Helicopters EC-135 now H135 (4), Mcdonnell Douglas DC-9 (3), Airbus Helicopters AS-365 (3), Piper PA-60 Aerostar (2), Douglas DC-8 (2), Mcdonnell Douglas Aircraft Co MD-88 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Pma Aeroparts LLC | Rheostat, Temperature Control 754822-4AP | 754822-4 | Bombardier/ CRJ CL 600 B219 Series 100/200/440 | 2016-07-27 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-002 | Modification Part | Bell 205A-1 | 2012-02-29 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5501-001 | Modification Part | Eurocopter France AS350B AS350BA AS350B2 AS350B3 EC130B4 | 2011-10-31 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-003 | Modification Part | Eurocopter France AS350B AS350BA AS350B2 AS350B3 EC130B4 | 2011-10-31 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5502-001 | Modification Part | Eurocopter France AS350B AS350BA AS350B2 AS350B3 EC130B4 | 2011-10-31 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5502-002 | Modification Part | Eurocopter France AS350B AS350BA AS350B2 AS350B3 EC130B4 | 2011-10-31 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-002 | Modification Part | Eurocopter France AS350B AS350BA AS350B2 AS350B3 EC130B4 | 2011-10-31 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-001 | Modification Part | Eurocopter France AS350B AS350BA AS350B2 AS350B3 EC130B4 | 2011-10-31 | current |
| Pacific Scientific, Oeco | Rheostat 26405 | 26405 | Airbus A300 B2-1C, A300 B4-2C, A300 B2K-3C | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 26443 | 26443 | The Boeing Company 747-100, 747-SP | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 200-26604-02 | 200-26604-02 | The Boeing Company 737-400 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 26416 | 26416 | The Boeing Company 767-200, 767-300, 757-200 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 200-26549-01 | 200-26549-01 | The Boeing Company 767-200, 767-300, 757-200 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 26411 | 26411 | The Boeing Company 747-100 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 200-26564-04 | 200-26564-04 | The Boeing Company 747-400 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 200-26569-01 | 200-26569-01 | The Boeing Company 737-300, 737-400, 737-500 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 200-26546-01 | 200-26546-01 | The Boeing Company 737-200, 737-300, 737-400 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 26472 | 26472 | The Boeing Company 747-200 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 200-26564-05 | 200-26564-05 | The Boeing Company 747-400 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 26435 | 26435 | The Boeing Company 747-100, 747-200, 747-300 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 26405 | 26405 | The Boeing Company 737-200, 737-300, 737-400 | 2011-04-19 | current |
| Pacific Scientific, Oeco | Rheostat 26458 | 26458 | Lockheed Martin Corporation L-1011-385-1, and -1-15 | 2011-04-19 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-002 | Modification Part | Eurocopter France AS-350B, AS-350BA, AS-350B2 | 2010-10-21 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5502-002 | Modification Part | Eurocopter Deutschland GmbH) (EC135 | 2010-10-21 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-003 | Modification Part | Eurocopter France AS-350B, AS-350BA, AS-350B2 | 2010-10-21 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5502-002 | Modification Part | Eurocopter France AS-350B, AS-350BA, AS-350B2 | 2010-10-21 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-002 | Modification Part | Bell 206A, 206B, 206 L | 2010-10-21 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-001 | Modification Part | Eurocopter France AS-350B, AS-350BA, AS-350B2 | 2010-10-21 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-002 | Modification Part | Eurocopter Deutschland GmbH) (MBB-BK117 A-4, MBB-BK117 B-1,... | 2010-10-21 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5502-001 | Modification Part | Eurocopter Deutschland GmbH EC135 | 2010-08-26 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-002 | Modification Part | Eurocopter Deutschland GmbH EC135 | 2010-08-26 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5501-001 | Modification Part | Eurocopter Deutschland GmbH EC135 | 2010-08-26 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5501-001 | Modification Part | Eurocopter France AS365N2 AS365N3 | 2010-03-28 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-002 | Modification Part | Eurocopter France AS365N2 AS365N3 | 2010-03-28 | current |
| Aviation Specialties Unlimited INC | Rheostat 231-5500-001 | Modification Part | Eurocopter France AS365N2 AS365N3 | 2010-03-28 | current |
| Worthington Aviation | Rheostat 883714-503 | 883714-503 | Israel 1124 | 2009-03-04 | current |
| Worthington Aviation | Rheostat 883714-509 | 883714-509 | Israel 1124 | 2009-03-04 | current |
| Worthington Aviation | Rheostat 883714-515 | 883714-515 | Israel 1124 | 2009-03-04 | current |
| Worthington Aviation | Rheostat 883714-505 | 883714-505 | Israel 1124 | 2009-03-04 | current |
| Worthington Aviation | Rheostat 883714-511 | 883714-511 | Israel 1124 | 2009-03-04 | current |
| Worthington Aviation | Rheostat 883714-513 | 883714-513 | Israel 1124 | 2009-03-04 | current |
| Worthington Aviation | Rheostat 883714-501 | 883714-501 | Israel 1124 | 2009-03-04 | current |
| Worthington Aviation | Rheostat 883714-507 | 883714-507 | Israel 1125 | 2009-03-04 | current |
| Worthington Aviation | Rheostat 883714-517 | 883714-517 | Israel 1124 | 2009-03-04 | current |
| Aviation Specialties Unlimited INC | Rheostat Assembly 723-1120-7200 | Modification Part | Eurocopter Deutschland EC 135 | 2007-03-26 | current |
| Ge Aviation Systems LLC (Formerly Smiths and Barbar Coleman) | Rheostat Assembly BYLZ-5508-2 | BYLZ-5508-2 | McDonnell Douglas DC-8-10 through DC-8-40 series airplanes | 2003-07-16 | current |
| Ge Aviation Systems LLC (Formerly Smiths and Barbar Coleman) | Rheostat Assembly BYLZ-5509-2 | BYLZ-5509-2 | McDonnell Douglas DC-8-10 through DC-8-40 series airplanes | 2003-07-16 | current |
| Geneva Aviation | Rheostat G10011 | Modification Part | Eurocopter France AS350 Series | 2000-01-04 | current |
| Oeco LLC | Rheostat 26416 | Boeing 26416 | Boeing 767-200, 767-300, 757-200 | 1999-08-03 | current |
| Oeco LLC | Rheostat 200-26546-01 | Boeing 200-26546-01 | Boeing 737-200, -300, -400 | 1999-08-03 | current |
| Oeco LLC | Rheostat 200-26549-01 | Boeing 200-26549-01 | Boeing 767-200, -300, 757-200 | 1999-08-03 | current |
| Oeco LLC | Rheostat 26472 | Boeing 26472 | Boeing 747-200 | 1999-08-03 | current |
| Oeco LLC | Rheostat 26405 | Boeing 26405 | Boeing 737-200, 737-300, 737-400 | 1999-08-03 | current |
| Oeco LLC | Rheostat 26435 | Boeing 26435 | Boeing 747-100, 747-200, 747-300 | 1999-08-03 | current |
| Oeco LLC | Rheostat 26443 | Boeing 26443 | Boeing 747-100, -SP | 1999-08-03 | current |
| Oeco LLC | Rheostat 26458 | Lockheed 26458 | Lockheed L-1011-385-1, -1-15 | 1999-08-03 | current |
| Oeco LLC | Rheostat 200-26564-05 | Boeing 200-26564-05 | Boeing 747-400 | 1999-08-03 | current |
| Oeco LLC | Rheostat 200-26569-01 | Boeing 200-26569-01 | Boeing 737-300, -400, -500 | 1999-08-03 | current |
| Oeco LLC | Rheostat 200-26564-04 | Boeing 200-26564-04 | Boeing 747-400 | 1999-08-03 | current |
| Machen INC | Rheostat 640083-001 | Piper 640083-001 | Aerostar Aircraft PA-60-600 & -601 | 1999-02-18 | current |
| Machen INC | Rheostat 640083-001 | Piper 640083-001 | Aerostar Aircraft PA-60-600, -601 | 1993-12-21 | current |
| Servo Instrument CORP | Rheostat 744-6119 | Douglas 7923996-501 | McDonnell Douglas DC-9-51 | 1993-04-06 | current |
| Servo Instrument CORP | Rheostat 744-6121 | Douglas 7923996-505 | McDonnell Douglas DC-9-81, -82, -83 | 1993-04-06 | current |
| Servo Instrument CORP | Rheostat 744-6082 | Douglas 7923996-1 | McDonnell Douglas DC-9, -31, -32 | 1993-04-06 | 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.