Yaw Damper
31 failure reports named the yaw damper in the last ten years, 172 since 1995, most often on the Bombardier CL-600 Challenger and CRJ; the condition most often found was "faulted". 179 FAA approvals let 8 companies make a replacement yaw damper, S-Tec Corporation holding the most (81).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 5 |
| 1996 | 10 |
| 1997 | 4 |
| 1998 | 9 |
| 1999 | 11 |
| 2000 | 1 |
| 2004 | 5 |
| 2005 | 13 |
| 2006 | 28 |
| 2007 | 7 |
| 2008 | 7 |
| 2009 | 4 |
| 2010 | 2 |
| 2011 | 10 |
| 2012 | 8 |
| 2013 | 6 |
| 2014 | 6 |
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 3 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Flight controls | 31 |
Models most often reporting it last ten years
How it failed the condition found, last ten years
faulted5malfunctioned5failed4disengaged3faulty3inoperative3defective1disconnected1leaking1none1
Conditions found, as a table
| reports | |
|---|---|
| faulted | 5 |
| malfunctioned | 5 |
| failed | 4 |
| disengaged | 3 |
| faulty | 3 |
| inoperative | 3 |
| defective | 1 |
| disconnected | 1 |
| leaking | 1 |
| none | 1 |
Approved replacement parts 179 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a yaw damper and sell it as an approved part for the models named. These are the companies holding such approvals for a yaw damper:
S-Tec Corporation 81Century Flight Systems INC 41Bae Systems Controls INC 36Nabtesco Aerospace INC 10Rockwell Collins INC. 6Teijin Seiki America INC 2Sigma Tek INC 2Moog INC 1
For these models most: Boeing 767 (34), Boeing 757 (32), Beechcraft 58 Baron (8), Cessna 402 (6), Cessna 310 (6), Beechcraft V35 Bonanza (6), Beechcraft A36 Bonanza (6), Beechcraft 95 Travel Air and Baron 55 (6), Piper PA-31 Navajo and Chieftain (5), Cessna 414 Chancellor (5), Beechcraft E-55 (5), Beechcraft D55 (5).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Nabtesco Aerospace INC | Yaw Damper Servo 1527100-1 | S252T704-1 | Boeing 767-200 Series | 2013-03-05 | current |
| Nabtesco Aerospace INC | Yaw Damper Servo 1536600-7 | S252T704-14 | Boeing 767-200 Series 767-300 Series | 2013-03-05 | current |
| Nabtesco Aerospace INC | Yaw Damper Servo 1540500-15 | S252T704-20 | Boeing 767-300 Series | 2013-03-05 | current |
| Nabtesco Aerospace INC | Yaw Damper Servo Actuator 1529200-1 | S251N313-1 | Boeing 757-200 Series | 2013-03-05 | current |
| Nabtesco Aerospace INC | Yaw Damper Servo 1536600-5 | S252T704-13 | Boeing 767-200 Series, 767-300 Series | 2013-03-05 | current |
| Nabtesco Aerospace INC | Yaw Damper Servo 1540500-3 | S252T704-17 | Boeing 757-200 Series | 2013-03-05 | current |
| Nabtesco Aerospace INC | Yaw Damper 1540500-7 | S252T704-18 | Boeing 767-200 Series, 767-300 Series,... | 2013-03-05 | current |
| Nabtesco Aerospace INC | Yaw Damper Servo 1540500-13 | S252T704-19 | Boeing 767-300 Series | 2013-03-05 | current |
| Nabtesco Aerospace INC | Yaw Damper Servo 1540500-1 | S252T704-15 | Boeing 767-200 Series, 767-300 Series,... | 2013-03-05 | current |
| Nabtesco Aerospace INC | Yaw Damper Servo 1527100-3 | S252T704-2 | Boeing 767-200 Series | 2013-03-05 | current |
| S-Tec Corporation | Yaw Damper System ST-267 | Modification Part | Piper Aircraft, Inc. PA-23-250 and PA-E23-250 | 2012-08-29 | current |
| S-Tec Corporation | Yaw Damper System ST-345 | Modification Part | Cessna Aircraft Company 402C | 2012-06-28 | current |
| S-Tec Corporation | Yaw Damper System ST-286 | Modification Part | Hawker Beechcraft Corporation B95A, D95A, and E95 | 2012-06-28 | current |
| S-Tec Corporation | Yaw Damper System ST-201 | Modification Part | Cessna Aircraft Company 310I, 310J, E310J | 2012-06-28 | current |
| S-Tec Corporation | Yaw Damper System ST-112 | Modification Part | Mooney Aviation Company, Inc. M20F, M20G, M20J and M20K | 2012-05-20 | current |
| S-Tec Corporation | Yaw Damper System ST-164 | Modification Part | Piper Aircraft, Inc. PA-32-260, PA-32-300, and PA-32R-300 | 2012-05-20 | current |
| Bae Systems Controls INC | Yaw Damper Module Modification, Component Kit 015T0695-1 | (015T0695-1) | The Boeing Company 757-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module Modification, Component Kit 015T0826-1 | (015T0826-1) | The Boeing Company 767-200 Series 767-300 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module Modification, Component Kit 015T0695-5 | (015T0695-5) | The Boeing Company 757-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-16 | (285T1102-16) | The Boeing Company 757-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-2 | (285T1102-2) | The Boeing Company 767-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-23 | (285T1102-23) | The Boeing Company 767-200 Series 767-300 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-2 | (285T1102-2) | The Boeing Company 757-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-14 | (285T1102-14) | The Boeing Company 767-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-23 | (285T1102-23) | The Boeing Company 757-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-17 | (285T1102-17) | The Boeing Company 767-300 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-18 | (285T1102-18) | The Boeing Company 767-200 Series 767-300 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-15 | (285T1102-15) | The Boeing Company 767-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-18 | (285T1102-18) | The Boeing Company 757-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-1 | (285T1102-1) | The Boeing Company 767-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-15 | (285T1102-15) | The Boeing Company 757-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-16 | (285T1102-16) | The Boeing Company 767-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-1 | (285T1102-1) | The Boeing Company 757-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-17 | (285T1102-17) | The Boeing Company 757-200 Series | 2012-05-15 | current |
| Bae Systems Controls INC | Yaw Damper Module, Component Kit 285T1102-14 | (285T1102-14) | The Boeing Company 757-200 Series | 2012-05-15 | current |
| S-Tec Corporation | Yaw Damper System ST-084 | Modification Part | Hawker Beechcraft Corporation V35B | 2012-01-29 | current |
| S-Tec Corporation | Yaw Damper System ST-404 | Modification Part | Hawker Beechcraft Corporation B90 and C90 | 2012-01-29 | current |
| S-Tec Corporation | Yaw Damper System ST-406 | Modification Part | Cessna Aircraft Company 335, 340, and 340A | 2012-01-29 | current |
| S-Tec Corporation | Yaw Damper System ST-201 | Modification Part | Cessna Aircraft Company 310R | 2012-01-29 | current |
| S-Tec Corporation | Yaw Damper System ST-404 | Modification Part | Hawker Beechcraft Corporation 65-90 and 65-A90 | 2012-01-29 | current |
| S-Tec Corporation | Yaw Damper System ST-072 | Modification Part | Hawker Beechcraft Corporation S35, V35, V35A | 2012-01-29 | current |
| S-Tec Corporation | Yaw Damper System ST-076 | Modification Part | Hawker Beechcraft Corporation 76 | 2012-01-29 | current |
| S-Tec Corporation | Yaw Damper System ST-108 | Modification Part | Hawker Beechcraft Corporation 76 | 2012-01-29 | current |
| S-Tec Corporation | Yaw Damper System ST-468 | Modification Part | Piper Aircraft, Inc. PA-31-325 | 2011-08-10 | current |
| S-Tec Corporation | Yaw Damper System ST-660 | Modification Part | Cessna Aircraft Company T303 | 2011-08-10 | current |
| S-Tec Corporation | Yaw Damper System ST-238 | Modification Part | Cessna Aircraft Company 421 and 421A | 2011-08-09 | current |
| S-Tec Corporation | Yaw Damper System ST-401 | Modification Part | Cessna Aircraft Company 414A | 2011-08-09 | current |
| S-Tec Corporation | Yaw Damper System ST-118 | Modification Part | Hawker Beechcraft Corporation F33A | 2011-08-09 | current |
| S-Tec Corporation | Yaw Damper System ST-345 | Modification Part | Cessna Aircraft Company 402A and 402B | 2011-08-09 | current |
| S-Tec Corporation | Yaw Damper System ST-401 | Modification Part | Cessna Aircraft Company 421C | 2011-08-09 | current |
| S-Tec Corporation | Yaw Damper System ST-466 | Modification Part | Hawker Beechcraft Corporation D50, D50A, D50B | 2011-08-09 | current |
| S-Tec Corporation | Yaw Damper System ST-404 | Modification Part | Hawker Beechcraft Corporation E90 | 2011-08-09 | current |
| S-Tec Corporation | Yaw Damper System ST-424 | Modification Part | Hawker Beechcraft Corporation 60, A60, and B60 | 2011-08-09 | current |
| S-Tec Corporation | Yaw Damper System ST-579 | Modification Part | Piper Aircraft, Inc. PA-31T | 2011-08-09 | current |
| S-Tec Corporation | Yaw Damper System ST-591 | Modification Part | Twin Commander Aircraft LLC 690, 690A, and 690B | 2010-11-29 | current |
| S-Tec Corporation | Yaw Damper System ST-554 | Modification Part | Cessna Aircraft Company P210N | 2010-11-29 | current |
| S-Tec Corporation | Yaw Damper System ST-482 | Modification Part | CPAC, Inc. 114TC | 2010-11-29 | current |
| S-Tec Corporation | Yaw Damper System ST-529 | Modification Part | Twin Commander Aircraft LLC 680E | 2010-07-19 | current |
| S-Tec Corporation | Yaw Damper System ST-652 | Modification Part | Piper Aircraft, Inc. PA-34-200T and PA-34-220T | 2010-06-22 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-16 | 285T1102-16 | The Boeing Company 757-200 SERIES, 767-200 SERIES | 2010-05-03 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-17 | 285T1102-17 | The Boeing Company 757-200 SERIES, 767-300 SERIES | 2010-05-03 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-14 | 285T1102-14 | The Boeing Company 757-200 SERIES, 767-200 SERIES | 2010-05-03 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-23 | 285T1102-23 | The Boeing Company 757-200 SERIES, 767-200 SERIES,... | 2010-05-03 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-15 | 285T1102-15 | The Boeing Company 757-200 SERIES, 767-200 SERIES | 2010-05-03 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-2 | 285T1102-2 | The Boeing Company 757-200 SERIES, 767-200 SERIES | 2010-05-03 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-18 | 285T1102-18 | The Boeing Company 757-200 SERIES, 767-200 SERIES,... | 2010-05-03 | current |
| S-Tec Corporation | Yaw Damper System ST-690 | Modification Part | M7 Aerospace LP SA227-AC (C-26A) | 2010-04-14 | current |
| S-Tec Corporation | Yaw Damper System ST-690 | Modification Part | M7 Aerospace LP SA227-DC (C-26B) | 2010-04-14 | current |
| S-Tec Corporation | Yaw Damper System ST-870 | Modification Part | Aerostar Aircraft Corporation PA-60-600 (Aerostar 600), PA-60-601... | 2010-04-05 | current |
| S-Tec Corporation | Yaw Damper System ST-468 | Modification Part | Piper Aircraft Inc. PA-31-350 | 2010-03-14 | current |
| S-Tec Corporation | Yaw Damper System ST-135 | Modification Part | Hawker Beechcraft Corporation H35, J35, K35 | 2010-01-25 | current |
| S-Tec Corporation | Yaw Damper System ST-141 | Modification Part | Piper Aircraft, Inc. PA-34-200T and PA-34-220T | 2010-01-25 | current |
| S-Tec Corporation | Yaw Damper System ST-134 | Modification Part | Piper Aircraft, Inc. PA-32R-301 and PA-32R-301T | 2010-01-25 | current |
| S-Tec Corporation | Yaw Damper System ST-139 | Modification Part | Piper Aircraft, Inc. PA-28R-201 and PA-28R-201T | 2010-01-25 | current |
| S-Tec Corporation | Yaw Damper System ST-118 | Modification Part | Hawker Beechcraft Corporation 36 and A36 | 2010-01-25 | current |
| S-Tec Corporation | Yaw Damper System ST-133 | Modification Part | B-N Group Ltd. BN-2A-2, BN-2A-8, BN-2A-20 | 2010-01-25 | current |
| S-Tec Corporation | Yaw Damper System ST-117 | Modification Part | Hawker Beechcraft Corporation A36, A36TC, and B36TC | 2010-01-25 | current |
| S-Tec Corporation | Yaw Damper System ST-145 | Modification Part | CPAC, Inc. 112, 112B, 114 | 2010-01-25 | current |
| S-Tec Corporation | Yaw Damper System ST-081 | Modification Part | Hawker Beechcraft Corporation 58 and 58A | 2010-01-25 | current |
| S-Tec Corporation | Yaw Damper System ST-083 | Modification Part | Hawker Beechcraft Corporation 95-55, 95-A55, 95-B55 | 2010-01-25 | current |
| S-Tec Corporation | Yaw Damper System ST-113 | Modification Part | Piper Aircraft, Inc. PA-28RT-201 and PA-28RT-201T | 2010-01-25 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-23 | 285T1102-23 | Boeing 757-200 SERIES, 767-200 SERIES,... | 2009-05-28 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-16 | 285T1102-16 | Boeing 757-200 SERIES, 767-200 SERIES | 2009-05-28 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-2 | 285T1102-2 | Boeing 757-200 SERIES, 767-200 SERIES | 2009-05-28 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-17 | 285T1102-17 | Boeing 757-200 SERIES, 767-300 SERIES | 2009-05-28 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE MODIFICATION, COMPONENT KIT 015T0695-5 | 015T0695-5 | Boeing 757-200 SERIES | 2009-05-28 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE MODIFICATION, COMPONENT KIT 015T0826-1 | 015T0826-1 | Boeing 767-200 SERIES, 767-300 SERIES | 2009-05-28 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-1 | 285T1102-1 | Boeing 757-200 SERIES, 767-200 SERIES | 2009-05-28 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE MODIFICATION, COMPONENT KIT 015T0695-1 | 015T0695-1 | Boeing 757-200 SERIES | 2009-05-28 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-14 | 285T1102-14 | Boeing 757-200 SERIES, 767-200 SERIES | 2009-05-28 | current |
| Bae Systems Controls INC | YAW DAMPER MODULE, COMPONENT KIT 285T1102-15 | 285T1102-15 | Boeing 757-200 SERIES, 767-200 SERIES | 2009-05-28 | current |
| Moog INC | Yaw Damper Servovalve A61545-001 (D026-014) | A61545-001 | Airbus A318-111, -112, A319-111 | 2006-11-30 | current |
| S-Tec Corporation | Yaw Damper Amplifier 0121-8 | Modification Part | Twin Commander 690, 690A, and 690B with STC... | 2003-08-27 | current |
| S-Tec Corporation | Yaw Damper System ST-072 | Modification Part | Raytheon S35, V35, V35A | 2002-08-18 | current |
| S-Tec Corporation | Yaw Damper System ST-117 | Modification Part | Beech Raytheon) (A36, A36TC, and B36TC | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-145 | Modification Part | Gulfstream 112, 112B, 114 | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-083 | Modification Part | Beech Raytheon) (95-55, 95-A55, 95-B55 | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-133 | Modification Part | Britten Norman BN-2A-2, BN-2A-8, BN-2A-20 | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-076 | Modification Part | Beech Raytheon) (76 | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-135 | Modification Part | Beech Raytheon) (C35, D35, E35 | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-081 | Modification Part | Beech Raytheon) (58 and 58A | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-141 | Modification Part | Piper PA-34-200T and PA-34-220T | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-113 | Modification Part | Piper PA-28RT-201 and PA-28RT-201T | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-108 | Modification Part | Beech Raytheon) (76 | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-072 | Modification Part | Beech Raytheon) (S35, V35, V35A | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-084 | Modification Part | Beech Raytheon) (V35B | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-134 | Modification Part | Piper PA-32R-301 and PA-32R-301T | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-139 | Modification Part | Piper PA-28R-201 and PA-28R-201T | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-112 | Modification Part | Mooney Aircraft M20F, M20G, M20J | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-081 | Modification Part | Beech Raytheon) (58 and 58A | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-118 | Modification Part | Beech Raytheon) (36 and A36 | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-135 | Modification Part | Beech Raytheon) (H35, J35, K35 | 2001-11-06 | current |
| S-Tec Corporation | Yaw Damper System ST-870 | Modification Part | Aerostar Aircraft PA-60-600 (Aerostar 600), PA-60-601... | 2001-06-27 | current |
| Sigma Tek INC | Yaw Damper System 42890-1000 | Cessna 42890-1000 | Cessna 402C | 1996-08-04 | current |
| Sigma Tek INC | Yaw Damper Switch 41536-0000 | Cessna 41536-0000 | Cessna T303, 402C, 414A | 1996-08-04 | current |
| Rockwell Collins INC. | Yaw Damper Sys Dwg 597-0732-032 | Modification Part | Beech Raytheon) (A-36 | 1995-05-10 | current |
| Rockwell Collins INC. | Yaw Damper Sys Dwg 597-0732-053 | Modification Part | Beech Raytheon) (58 and 58A | 1995-05-10 | current |
| Rockwell Collins INC. | Yaw Damper Sys Dwg 597-0732-020 by... | Modification Part | Cessna T310P and T310Q | 1995-05-10 | current |
| Rockwell Collins INC. | Yaw Damper Sys Dwg 597-0732-004 | Modification Part | Beech Raytheon) (60, A60, and B60 | 1995-05-10 | current |
| Rockwell Collins INC. | Yaw Damper Sys Dwg 597-0732-041 | Modification Part | Cessna 310R | 1995-05-10 | current |
| Rockwell Collins INC. | Yaw Damper Sys Dwg 597-0732-045 | Modification Part | Piper PA-31-325 | 1995-05-10 | current |
| Teijin Seiki America INC | Yaw Damper Servo 1536600-5 | Boeing S252T704-13 | Boeing 767-200, -300, 757-200 | 1991-07-21 | current |
| Teijin Seiki America INC | Yaw Damper Servo 1536600-7 | Boeing S252T704-14 | Boeing 767-200, -300, 757-200 | 1991-07-21 | current |
| S-Tec Corporation | Yaw Damper System ST-084 | - | Hawker Beechcraft Model V35B | 1989-05-30 | current |
| S-Tec Corporation | Yaw Damper System ST-238 | - | Cessna Model 414 | 1989-05-30 | current |
| S-Tec Corporation | Yaw Damper System ST-076 | - | Hawker Beechcraft Model 76 | 1989-05-30 | current |
| S-Tec Corporation | Yaw Damper System ST-404 | - | Hawker Beechcraft 65-90 & 65-A90 | 1987-09-16 | current |
| S-Tec Corporation | Yaw Damper System ST-201 | - | Cessna 310R | 1987-09-16 | current |
| S-Tec Corporation | Yaw Damper System ST-345 | - | Cessna 402C | 1986-04-20 | current |
| S-Tec Corporation | Yaw Damper System ST-201 | - | Cessna 310I, 310J, E310J | 1986-04-20 | current |
| S-Tec Corporation | Yaw Damper System ST-286 | - | Hawker Beechcraft B95A, D95A and E95 | 1986-01-06 | current |
| S-Tec Corporation | Yaw Damper System ST-286 | - | Hawker Beechcraft 95 and B-95 | 1985-09-16 | current |
| S-Tec Corporation | Yaw Damper System ST-320 | - | Mooney Aircraft M20J and M20K | 1985-09-16 | current |
| S-Tec Corporation | Yaw Damper System ST-309 | - | Cessna 210D, 210E, 210F and T210F | 1985-09-16 | current |
| S-Tec Corporation | Yaw Damper System ST-267 | - | Piper PA-23-250 and PA-E23-250, S/N... | 1985-03-12 | current |
| S-Tec Corporation | Yaw Damper System ST-238 | - | Cessna 421B, S/N 421B0001 Through S/N... | 1985-03-12 | current |
| S-Tec Corporation | Yaw Damper System ST-134 | - | Piper PA-32-301 and PA-32-301T | 1984-09-12 | current |
| S-Tec Corporation | Yaw Damper System ST-251 | - | Piper PA-23-250 and PA-E23-250, S/N... | 1984-09-12 | current |
| Century Flight Systems INC | Yaw Damper System Edo Avionics Model YK914 | - | Hawker Beechcraft A99, B99, C99 | 1982-10-04 | current |
| Century Flight Systems INC | Yaw Damper System Edo Avionics Model YK832 | - | Hawker Beechcraft A36, A36TC, B36TC | 1982-10-04 | current |
| Century Flight Systems INC | Yaw Damper System Mitchell Model YK849 | - | Piper PA-31, PA-31-300, PA-31-325 | 1982-01-13 | current |
| Century Flight Systems INC | Yaw Damper Mitchell Model YK877 | - | Aerostar Aircraft 600, 601, 601P | 1981-02-24 | current |
| Century Flight Systems INC | Yaw Damper Mitchell Model YK835 | - | Hawker Beechcraft 65-90, 65-A90, B90 | 1980-09-03 | current |
| Century Flight Systems INC | Yaw Damper Mitchell Model YK867 | - | Cessna 414 | 1980-09-03 | current |
| Century Flight Systems INC | Yaw Damper Mitchell Model YK871 | - | Hawker Beechcraft 60, A60, B60 | 1980-09-03 | current |
| Century Flight Systems INC | Yaw Damper Mitchell Model YK877 | - | Aerostar Aircraft 600, 601, 601P | 1980-09-03 | current |
| Century Flight Systems INC | Yaw Damper Mitchell Model YK875 | - | Piper PA-44-180, PA-44-180T | 1980-09-03 | current |
| Century Flight Systems INC | Yaw Damper Mitchell Model YK832 | - | Hawker Beechcraft A36, A36TC. 3A15 | 1980-04-24 | current |
| Century Flight Systems INC | Yaw Damper Mitchell Model YK781 | - | Hawker Beechcraft 58, 58A. 3A16 | 1980-04-24 | current |
| Century Flight Systems INC | Yaw Damper Mitchell Model YK833 | - | Hawker Beechcraft V35B. 3A15 | 1980-04-24 | current |
The first 150 of 179.
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.