Locking Plate
1 failure reports named the locking plate in the last ten years, 4 since 1996, most often on the Boeing 727; the condition most often found was "corroded". 8 FAA approvals let 6 companies make a replacement locking plate, Optimum Engineering & Manufacturing holding the most (3).
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1996 | 1 |
| 2003 | 1 |
| 2013 | 1 |
| 2018 | 1 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Airframe structure | 1 |
Models most often reporting it last ten years
Models most reported, as a table
| reports | |
|---|---|
| Boeing 727 | 1 |
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| corroded | 1 |
Approved replacement parts 8 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a locking plate and sell it as an approved part for the models named. These are the companies holding such approvals for a locking plate:
For these models most: Boeing 737 (2), Raytheon Corporate Jets Inc HAWKER 800 (1), Raytheon Corporate Jets Inc HAWKER 1000 (1), Hawker Beechcraft Corp HAWKER 900 (1), Hawker Beechcraft Corp HAWKER 750 (1), British Aerospace BAE 125 (1), Airbus Helicopters EC-135 now H135 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Av8 Pma, LLC. | Locking Plate NP-UN571-1 | 25UN571 | Textron Aviation Inc. BAe.125 Series 800A, BAe.125 Series... | 2025-02-06 | current |
| Seginus Aerospace LLC | Locking Plate SAL535M3002211 | L535M3002211 | Airbus Helicopters... EC135P1, EC135T1, EC135P2 | 2022-10-04 | current |
| Gemini Engineering | LOCKING PLATE 69-73086-1 | 69-73086-1 | Boeing 737-300 Series, 737-400 Series,... | 2009-06-03 | current |
| Spirit Aerosystems INC | LOCKING PLATE 69-73086-1 | 69-73086-1 | Boeing 737-300 SERIES, 737-400 SERIES,... | 2007-03-02 | current |
| Optimum Engineering & Manufacturing | Locking Plate Z1-190-019-03 | 1-190-019-03 | Honeywell T5313B, T5317A, T5317A-1 | 2003-01-13 | current |
| Air Technology Engines INC | Locking Plate, Nut & Bolt, Power Turbine A1-140-142-02 | Lycoming, 1-140-142-02 | Avco Lycoming,... T5313B, T5317A, T5317A-1 | 2001-01-17 | current |
| Optimum Engineering & Manufacturing | Locking Plate, Power Turbine Z1-140-142-02 | 1-140-142-02 | Honeywell T5313B, T5317A, T5317A-1 | 1992-12-31 | current |
| Optimum Engineering & Manufacturing | Locking Plate Z1-190-019-02 | 1-190-019-02 | Honeywell T5313B, T5317A, T5317A-1 | 1992-12-31 | 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.