Trim Tab
22 failure reports named the trim tab in the last ten years, 196 since 1995, most often on the Boeing 737; the condition most often found was "cracked". 26 FAA approvals let 10 companies make a replacement trim tab, Bell Helicopter Textron INC (Formerly Aeronautical Accessories INC) holding the most (7). The reports call it "trim tab", "trim tab assy", "trim tab bearing", "trim tab fitting", "trim tab rib" and 2 other ways.
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 16 |
| 1996 | 15 |
| 1997 | 15 |
| 1998 | 15 |
| 1999 | 6 |
| 2000 | 10 |
| 2001 | 11 |
| 2002 | 14 |
| 2003 | 6 |
| 2004 | 6 |
| 2005 | 7 |
| 2006 | 5 |
| 2007 | 4 |
| 2008 | 11 |
| 2009 | 8 |
| 2010 | 1 |
| 2011 | 12 |
| 2012 | 6 |
| 2013 | 3 |
| 2014 | 2 |
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 7 |
| 2021 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 2 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Flight controls | 11 |
| Airframe structure | 11 |
Models most often reporting it last ten years
Models most reported, as a table
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| cracked | 8 |
| damaged | 3 |
| delaminated | 2 |
| broken | 1 |
| contaminated | 1 |
| excess play | 1 |
| faulty | 1 |
| frozen | 1 |
| loose | 1 |
| out of adjust | 1 |
Approved replacement parts 26 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a trim tab and sell it as an approved part for the models named. These are the companies holding such approvals for a trim tab:
For these models most: Bell-Carson 47 (6), Bell 47 (5), Bell 214 (3), Tiger Aircraft Llc AG-5 (2), Sikorsky UH-60 (2), Sikorsky S-70 (2), Bellanca 17 Viking (2), Piper J-3 Cub (1), Helio HT-295 (1), Helio H-395 (1), Helio H-391 (1), Helio H-295 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Helio Alaska, INC. | Trim Tab Assembly H023-001 | H023-001 | Helio Alaska H-250, H-295 (USAF U-10D), HT-295 | 2026-05-04 | current |
| Master Support INC | Trim Tab P70150-09163-102 | 70150-09163-102 | Sikorsky S-70 (UH-60A, UH-60L), S70-C | 2022-06-23 | current |
| Master Support INC | Trim Tab P70150-09163-101 | 70150-09163-101 | Sikorsky S-70 (UH-60A, UH-60L), S70-C | 2022-06-23 | current |
| Erickson Incorporated DBA Erickson Air-Crane | Trim Tab Assy - Main Rotor Blade, 33 Inch Chord 214-015-040-1 | 214-015-040-1 | Bell 214B | 2015-12-15 | current |
| Erickson Incorporated DBA Erickson Air-Crane | Trim Tab Assy - Main Rotor Blade, 33 Inch Chord 214-015-040-105 | 214-015-040-105 | Bell 214B | 2015-12-15 | current |
| Erickson Incorporated DBA Erickson Air-Crane | Trim Tab Assy - Main Rotor Blade, 33 Inch Chord 214-015-040-109 | 214-015-040-109 | Bell 214ST | 2015-12-15 | current |
| Skytronics Incoporated | Trim Tab Assembly 00855-501 | 10-60173-2 | Boeing Model 707-020, 707-120, 707-220 | 2015-05-17 | current |
| Scott'S-Bell 47 INC. | Trim Tab Assembly, Main Rotor Blade SB47-110-363-103 | 47-110-363-103 | Scott's - Bell 47, Inc. 47J, 47J-2, 47J-2A | 2014-01-15 | current |
| Scott'S-Bell 47 INC. | Trim Tab Assembly, Main Rotor Blade SB47-110-363-001 | 47-110-363-1 | Scott's - Bell 47, Inc. 47G, 47G-2 | 2014-01-15 | current |
| Scott'S-Bell 47 INC. | Trim Tab Assembly, Main Rotor Blade SB47-110-363-103 | 47-110-363-103 | Scott's - Bell 47, Inc. 47G-2A, 47G-2A-1, 47G-3 | 2014-01-15 | current |
| Scott'S-Bell 47 INC. | Trim Tab Assembly, Main Rotor Blade SB47-110-363-001 | 47-110-363-1 | Scott's - Bell 47, Inc. 47G-2A, 47G-2A-1, 47G-3 | 2014-01-15 | current |
| Scott'S-Bell 47 INC. | Trim Tab Assembly, Main Rotor Blade SB47-110-363-001 | 47-110-363-1 | Scott's - Bell 47, Inc. 47J, 47J-2, 47J-2A | 2014-01-15 | current |
| Scott'S-Bell 47 INC. | Trim Tab Assembly, Main Rotor Blade SB47-110-363-103 | 47-110-363-103 | Scott's - Bell 47, Inc. 47G, 47G-2 | 2014-01-15 | current |
| Alexandria Aircraft LLC | Trim Tab Control Rod Rework Service Kit SK1234789-5001 | Bellanca SK1234789-5001 | Bellanca 17-30A, 17-31A, 17-31ATC | 2004-02-08 | current |
| Alexandria Aircraft LLC | Trim Tab Control Rod Rework Service Kit SK1234789-5001 | Bellanca SK1234789-5001 | Bellanca 14-19-3A, 17-30, 17-31 | 2004-02-08 | current |
| Aero Fabricators INC | Trim Tab Control Cover Plate M-269-000 | Piper 41131-00 | Piper J3C-40, J3C-50, J3C-50S | 1998-03-08 | current |
| Fletchair INC | Trim Tab 5302047-703 | Gulfstream American- 5302047-703 | Tiger Aircraft AA-5A, AA-5B, AG-5B | 1994-08-10 | current |
| Fletchair INC | Trim Tab 5302047-704 | Gulfstream American- 5302047-704 | Tiger Aircraft AA-5A, AA-5B, AG-5B | 1994-08-10 | current |
| Composite Technology INC | Trim Tab Assembly C-47-245 | 47-110-245-1 | Bell 47B, D, D1 | 1991-10-06 | current |
| Bell Helicopter Textron INC (Formerly Aeronautical Accessories INC) | Trim Tab Dwg No. 700-416 | Hiller Dwg No. 10141216 | Hiller Aviation 12D, 12L, 12E | 1990-10-11 | current |
| Bell Helicopter Textron INC (Formerly Aeronautical Accessories INC) | Trim Tab Dwg No. 10141216 | Hiller Dwg No. 2253-1216 | Rogerson Hiller 12E | 1990-05-20 | current |
| Bell Helicopter Textron INC (Formerly Aeronautical Accessories INC) | Trim Tab Assy P/N 10101203 Rev. N/C,... | Bell P/N 47-110-137 | Bell Models 47-G2 and H-13G | 1989-07-02 | current |
| Bell Helicopter Textron INC (Formerly Aeronautical Accessories INC) | Trim Tab Assy, Main Rotor Blade P/N 700-213 Rev. N/C Dtd... | Bell 206-010-219 | Bell Models 206A/B/L/L-l/L-3 | 1989-07-02 | current |
| Bell Helicopter Textron INC (Formerly Aeronautical Accessories INC) | Trim Tab Assy, Main Rotor Blade P/N 700-219 Rev. N/C Dtd... | Bell 206-015-019 | Bell Models 206L/L-1/L-3 | 1989-07-02 | current |
| Bell Helicopter Textron INC (Formerly Aeronautical Accessories INC) | Trim Tab, Main Rotor Blade P/N 700-301 Rev. N/C Dtd... | Bell 47-110-363 | Bell Model 47 | 1989-07-02 | current |
| Bell Helicopter Textron INC (Formerly Aeronautical Accessories INC) | Trim Tab Assy, Main Rotor Blade P/N 700-217 Rev. N/C Dtd... | Bell 206-015-517 | Bell Models 206L/L-1/L-3 | 1989-07-02 | 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.