Seat Spring
12 failure reports named the seat spring in the last ten years, 14 since 1997, most often on the Airbus A330; the condition most often found was "corroded". 12 FAA approvals let 4 companies make a replacement seat spring, Wencor LLC holding the most (7).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1997 | 1 |
| 2002 | 1 |
| 2020 | 1 |
| 2022 | 1 |
| 2025 | 9 |
| 2026 | 1 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Airframe structure | 12 |
Models most often reporting it last ten years
Models most reported, as a table
| reports | |
|---|---|
| Airbus A330 | 5 |
| Bombardier CL-600 Challenger and CRJ | 4 |
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| corroded | 12 |
Approved replacement parts 12 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a seat spring and sell it as an approved part for the models named. These are the companies holding such approvals for a seat spring:
For these models most: Bombardier CL-600 Challenger and CRJ (3), Airbus A321 (3), Boeing 737 (2), Airbus A320 (2), Airbus A319 (2), Piper PA-34 Seneca (1), Piper PA-32 Cherokee Six, Lance and Saratoga (1), Piper PA-28 Cherokee, Warrior, Archer and Arrow (1), Boeing 777 (1), Boeing 767 (1), Boeing 727 (1), Boeing 707 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Wencor LLC | Seat-Spring 4132005-1WE | 4132005-1 | Airbus SAS A321 Model -213A340-541A340-642 | 2024-07-09 | current |
| Wencor LLC | Seat-Spring 4132005-1WE | 4132005-1 | The Boeing Company 767-400ER Series, 777-200 Series,... | 2024-07-09 | current |
| Wencor, LLC | Seat-Spring 4132005-1WE | 4132005-1 | Airbus SAS A318 Model -112, A319 Model -151N,... | 2023-01-30 | current |
| Wencor, LLC | Seat-Spring 4132005-1WE | 4132005-1 | Airbus Canada... BD-500-1A10, BD-500-1A11 | 2023-01-30 | current |
| Wencor, LLC | Seat-Spring 4132005-1WE | 4132005-1 | The Boeing Company 737-8, 737-9, 737-8200 | 2023-01-30 | current |
| Wencor LLC | Seat-Spring 700324WE | 700324 | Airbus A300, A300, Model B2-1A | 2020-01-16 | current |
| Wencor LLC | Seat-Spring Guide 887344WE | 887344 | Bombardier, Inc. CL-600-2B19 (Regional Jet Series 100 & 440) | 2017-08-31 | current |
| Mcfarlane Aviation INC | Seat Spring, Adjustment MC555-692 | 555-692, 76445-00 | Piper Aircraft, Inc. PA-28-140 s/n 28-7425061 thru... | 2016-08-23 | current |
| Wencor LLC | Seat-Spring 4132005-1WE | 4132005-1 | Airbus A318 Series, A318 Model -111, A319 Series | 2014-12-01 | current |
| Wencor LLC | Seat-Spring Guide 887344WE | 887344 | Bombardier, Inc. CL-600-2B19 (Regional Jet Series 100 & 440) | 2013-05-02 | current |
| Wencor LLC | Seat-Spring Guide 887344WE | 887344 | Bombardier, Inc. CL-600-2B19 (Regional Jet Series 100 & 440) | 2013-02-26 | current |
| Wencor West INC | Seat Spring 713328WE | Sundstrand 713328 | Boeing 707B, 707C, 720B | 1993-03-22 | 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.