Sprocket
10 failure reports named the sprocket in the last ten years, 41 since 1995, most often on the Mcdonnell Douglas MD-11; the condition most often found was "corroded". 15 FAA approvals let 7 companies make a replacement sprocket, Lucas Aerospace Equipment CORP holding the most (7). The reports call it "sprocket", "sprocket assy".
Reports by year
Reports by year, as a table
| reports | |
|---|---|
| 1995 | 1 |
| 1996 | 1 |
| 1997 | 3 |
| 1998 | 2 |
| 1999 | 4 |
| 2000 | 1 |
| 2001 | 2 |
| 2002 | 2 |
| 2003 | 4 |
| 2004 | 1 |
| 2005 | 1 |
| 2008 | 2 |
| 2012 | 2 |
| 2013 | 2 |
| 2014 | 1 |
| 2015 | 2 |
| 2017 | 2 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 1 |
| 2024 | 2 |
Which system the reports file it under last ten years
Reports by system, as a table
| reports | |
|---|---|
| Airframe structure | 6 |
| Flight controls | 4 |
Models most often reporting it last ten years
Models most reported, as a table
| reports | |
|---|---|
| Mcdonnell Douglas MD-11 | 5 |
| Boeing 757 | 2 |
| Cessna 182 Skylane | 1 |
| Embraer ERJ 170 E170 and E175 | 1 |
| Mcdonnell Douglas MD-10 | 1 |
How it failed the condition found, last ten years
Conditions found, as a table
| reports | |
|---|---|
| corroded | 2 |
| damaged | 2 |
| inoperative | 2 |
| worn | 2 |
| broken | 1 |
| failed | 1 |
Engines most often reporting it
Approved replacement parts 15 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a sprocket and sell it as an approved part for the models named. These are the companies holding such approvals for a sprocket:
For these models most: Boeing 717 (2), Piper PA-22 Tri-Pacer and Colt (1), Piper PA-20 Pacer (1), Mcdonnell Douglas DC-9 (1), Mcdonnell Douglas Aircraft Co MD-88 (1), Cessna TR182 Turbo Skylane RG (1), Cessna T182 Turbo Skylane (1), Cessna R182 Skylane RG (1), Cessna A152 (1), Cessna A150 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Garmin International INC | Sprocket, 22 Tooth 380-00057-00 | Modification Part | See Approved Model... See Approved Model List for STC SA01866WI | 2019-02-14 | current |
| Garmin International INC | Sprocket, 55 Tooth 380-00059-00 | Modification Part | See Approved Model... See Approved Model List for STC SA01866WI | 2019-02-14 | current |
| Mcfarlane Aviation INC | Sprocket MC0761210-1 | 0761210-1, 0761210-1AWG | Textron Aviation 180 s/n All, 180A s/n All, 180B s/n All | 2016-05-12 | current |
| Mcfarlane Aviation INC | Sprocket MC0432134-1 | 0432134-1 | Textron Aviation 120 s/n All, 140 s/n All, 140A s/n All | 2016-05-12 | current |
| Denezol Tool CO INC | Sprocket 3915965-1 | 3915965-1 | McDonnell Douglas DC-9-31, DC-9-32, DC-9-32F | 2010-11-22 | current |
| Steve'S Aircraft | Sprocket SA2-12 | Modification Part | Piper PA-20, PA-20S, PA-20115 | 2002-08-29 | current |
| Kapco | Sprocket 3915964-503 | 3915964-503 | Boeing 717-200 | 2001-04-03 | current |
| Inspectech Aero Service INC | Sprocket IT457C23 | 457C23 | Lockheed L-382 B/E/F/G | 2001-02-26 | current |
| Lucas Aerospace Equipment CORP | Sprocket Assembly 65806-311 | Lockheed 671980-129 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Lucas Aerospace Equipment CORP | Sprocket Assembly 65806-303 | Lockheed 671980-201 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Lucas Aerospace Equipment CORP | Sprocket Assembly 65806-301 | Lockheed 671980-155 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Lucas Aerospace Equipment CORP | Sprocket Assembly 65806-314 | Lockheed 671980-195 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Lucas Aerospace Equipment CORP | Sprocket Assembly 65806-313 | Lockheed 671980-171 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Lucas Aerospace Equipment CORP | Sprocket Assembly 65806-302 | Lockheed 671980-159 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | current |
| Lucas Aerospace Equipment CORP | Sprocket Assembly 65806-300 | Lockheed 671980-109 | Lockheed L1011-385-1, -1-14, -1-15 | 1997-05-18 | 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.