Leaf Spring
30 failure reports named the leaf spring in the last ten years, 55 since 1999, most often on the Boeing 757; the condition most often found was "damaged". 56 FAA approvals let 7 companies make a replacement leaf spring, Abi LLC holding the most (32).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1999 | 1 |
| 2003 | 1 |
| 2004 | 4 |
| 2005 | 2 |
| 2009 | 1 |
| 2010 | 1 |
| 2011 | 1 |
| 2012 | 6 |
| 2013 | 4 |
| 2014 | 3 |
| 2015 | 1 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 3 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 4 |
| 2025 | 4 |
| 2026 | 5 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Cabin, seats and restraints | 23 |
| Airframe structure | 7 |
Models most often reporting it last ten years
Models most reported, as a table
| reports | |
|---|---|
| Boeing 757 | 28 |
| Aerospatiale AS350 | 2 |
How it failed the condition found, last ten years
damaged6failed4broken3cracked3defective3faulted3no test2out of adjust2weak2inoperative1
Conditions found, as a table
| reports | |
|---|---|
| damaged | 6 |
| failed | 4 |
| broken | 3 |
| cracked | 3 |
| defective | 3 |
| faulted | 3 |
| no test | 2 |
| out of adjust | 2 |
| weak | 2 |
| inoperative | 1 |
Engines most often reporting it
Approved replacement parts 56 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a leaf spring and sell it as an approved part for the models named. These are the companies holding such approvals for a leaf spring:
Abi LLC 32Spirit Aerosystems INC 9Gemini Engineering 5Aviation Materials Management INC 4Gemini Engineering INC 3Seal Dynamics INC 2Rotair Industries INC 1
For these models most: Boeing 757 (21), Taylorcraft BCS12 (2), Piper PA-20 Pacer (2), Piper PA-19 (2), Piper PA-18 Super Cub (2), Piper PA-17 Vagabond (2), Piper PA-16 Clipper (2), Piper PA-15 (2), Piper PA-14 (2), Piper PA-12 Super Cruiser (2), Piper PA-11 Cub Special (2), Piper J5 Cub Cruiser (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | Luscombe Aircraft Corp. 8, 8A, 8B | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | Maule Aerospace... Bee Dee M-4, M-4, M-4C | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | Aviat Aircraft Inc. A-1, A-1A, A-1B | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | Piper Aircraft Inc. J3C-40, J3C-50, J3C-50S | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | Taylorcraft Inc. BLS, BLS-65, BLS12-65 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | AeroSedan LLC 15AC | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | Taylorcraft2000 LLC BCS, BCS-65, BCS12-65 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | FS 2001 Corp J5A (Army L-4F), J5A-80, J5B (Army L-4G) | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | Luscombe Aircraft Corp. 8, 8A, 8B | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | Aviat Aircraft Inc. A-1, A-1A, A-1B | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | Univair Aircraft... 108, 108-1, 108-2 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | Textron Aviation Inc 120, 140, 140A | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | American Champion... 7AC, 7ACA, S7AC | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | FS 2001 Corp. J5A (Army L-4F), J5A-80, J5B (Army L-4G) | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | FS 2002 Corp PA-14 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | STOL Aviation S-1B2 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | Textron Aviation Inc 120, 140, 140A | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | Cub Crafters Inc. CC19-180, CC19-215 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | Univair Aircraft... 108, 108-1, 108-2 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | FS 2003 Corp PA-12 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | Maule Aerospace... Bee Dee M-4, M-4, M-4C | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | STOL Aviation S-1B2 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | Piper Aircraft Inc. J3C-40, J3C-50, J3C-50S | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | Taylorcraft2000 LLC BCS, BCS-65, BCS12-65 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | Taylorcraft Inc. BLS, BLS-65, BLS12-65 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | TopCub Aircraft Inc CC18-180 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | AeroSedan LLC 15AC | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 1 ½” ABI-3243-01 | 3243-01 | TopCub Aircraft Inc. CC18-180 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | Cub Crafters Inc. CC19-180, CC19-215 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | American Champion... 7AC, 7ACA, S7AC | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | FS 2002 Corp PA-14 | 2026-03-30 | current |
| Abi LLC | Leaf Spring Adapter 11/4” ABI-3243-02 | 3243-02 | FS 2003 Corp. PA-12 | 2026-03-30 | current |
| Aviation Materials Management INC | LEAF SPRING 315N3307-19 | 315N3307-19 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2013-03-25 | current |
| Aviation Materials Management INC | LEAF SPRING 315N3307-18 | 315N3307-18 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2013-03-25 | current |
| Aviation Materials Management INC | LEAF SPRING 315N3307-17 | 315N3307-17 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2013-03-25 | current |
| Aviation Materials Management INC | LEAF SPRING 315N3307-20 | 315N3307-20 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2013-03-25 | current |
| Spirit Aerosystems INC | LEAF SPRING 69B14855-3 | 69B14855-3 | Boeing 757-200 SERIES, 757-300 SERIES | 2011-05-15 | current |
| Spirit Aerosystems INC | LEAF SPRING 69B14855-4 | 69B14855-4 | Boeing 757-200 SERIES, 757-300 SERIES | 2011-03-30 | current |
| Spirit Aerosystems INC | LEAF SPRING 69B14855-4 | 69B14855-4 | Boeing 757-200 SERIES, 757-300 SERIES | 2011-02-28 | current |
| Seal Dynamics INC | Leaf Spring 69B14855-1SD | Boeing P/N 69B14855-1 | Boeing B747-100 Series, B747-100B Series,... | 2010-01-31 | current |
| Gemini Engineering | LEAF SPRING 315N3307-17 | 315N3307-17 | Boeing 757-200 Series, 757-200PF Series,... | 2009-11-15 | current |
| Gemini Engineering INC | LEAF SPRING 315N3307-19 | 315N3307-19 | Boeing 757-200 Series, 757-200PF Series,... | 2009-11-15 | current |
| Gemini Engineering INC | LEAF SPRING 315N3307-17 | 315N3307-17 | Boeing 757-200 Series, 757-200PF Series,... | 2009-11-15 | current |
| Gemini Engineering INC | LEAF SPRING 69B14855U1 | 69B14855U1 | Boeing 747-100 Series, 747-200B Series,... | 2009-11-15 | current |
| Gemini Engineering | LEAF SPRING 69B14855-3 | 69B14855-3 | Boeing 757-200 Series, 757-300 Series | 2009-06-03 | current |
| Seal Dynamics INC | Leaf Spring 69B14855-3SD | Bo,eing P/N 69B14855-3 | Boeing B757-200 series B757-300 series | 2009-02-10 | current |
| Gemini Engineering | LEAF SPRING 315N3307-18 | 315N3307-18 | Boeing 757-200 Series, 757-200PF Series,... | 2008-08-12 | current |
| Gemini Engineering | LEAF SPRING 315N3307-20 | 315N3307-20 | Boeing 757-200 Series, 757-200PF Series,... | 2008-08-12 | current |
| Spirit Aerosystems INC | LEAF SPRING 69B14855-4 | 69B14855-4 | Boeing 757-200 SERIES, 757-300 SERIES | 2008-02-11 | current |
| Spirit Aerosystems INC | LEAF SPRING 69B14855-3 | 69B14855-3 | Boeing 757-200 SERIES, 757-300 SERIES | 2007-07-01 | current |
| Spirit Aerosystems INC | LEAF SPRING 315N3307-17 | 315N3307-17 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2007-03-02 | current |
| Spirit Aerosystems INC | LEAF SPRING 315N3307-19 | 315N3307-19 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2007-03-02 | current |
| Spirit Aerosystems INC | LEAF SPRING 315N3307-20 | 315N3307-20 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2007-03-02 | current |
| Spirit Aerosystems INC | LEAF SPRING 315N3307-18 | 315N3307-18 | Boeing 757-200 SERIES, 757-200PF SERIES,... | 2007-03-02 | current |
| Gemini Engineering | LEAF SPRING 69B14855-1 | 69B14855-1 | Boeing 747-100 Series, 747-100B Series,... | 2006-07-30 | current |
| Rotair Industries INC | Leaf Spring R6120-62147-2 | Sikorsky S6120-62147-2 | Sikorsky S-61L, N, NM | 1994-01-12 | 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.