One Piece
No failure report names the one piece. 18 FAA approvals let 7 companies make a replacement one piece, Nextant Aerospace LLC holding the most (8).
Approved replacement parts 18 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a one piece and sell it as an approved part for the models named. These are the companies holding such approvals for a one piece:
For these models most: Beechcraft 400 Beechjet (8), Piper PA-30 Twin Comanche (2), Piper PA-24 Comanche (2), Piper PA-23 Apache and Aztec (2), Piper PA-44 Seminole (1), Piper PA-39 Twin Comanche C/R (1), Piper PA-34 Seneca (1), Piper PA-32 Cherokee Six, Lance and Saratoga (1), Mooney M-20 (1), Beechcraft V35 Bonanza (1), Beechcraft S35 Bonanza (1), Beechcraft P35 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Nextant Aerospace LLC | Upper One Piece Pylon Skin N546123-801 | Modification Part | Raytheon Aircraft Company 400A | 2016-03-10 | current |
| Nextant Aerospace LLC | Lower One Piece Pylon Skin N546121-801 | Modification Part | Raytheon Aircraft Company 400A | 2016-03-10 | current |
| Nextant Aerospace LLC | Upper One Piece Pylon SS Liner N546123-803 | Modification Part | Raytheon Aircraft Company 400A | 2016-03-10 | current |
| Nextant Aerospace LLC | Lower One Piece Pylon SS Liner N546121-803 | Modification Part | Raytheon Aircraft Company 400A | 2016-03-10 | current |
| Nextant Aerospace LLC | Lower One Piece Pylon SS Liner N546121-803 | Modification Part | Raytheon Aircraft Company 400A | 2014-08-12 | current |
| Nextant Aerospace LLC | Lower One Piece Pylon Skin N546121-801 | Modification Part | Raytheon Aircraft Company 400A | 2014-08-12 | current |
| Nextant Aerospace LLC | Upper One Piece Pylon Skin N546123-801 | Modification Part | Raytheon Aircraft Company 400A | 2014-08-12 | current |
| Nextant Aerospace LLC | Upper One Piece Pylon SS Liner N546123-803 | Modification Part | Raytheon Aircraft Company 400A | 2014-08-12 | current |
| LP Aero Plastics INC | One Piece Windshield 999 | Gene's P/N 75121-1 and Dwg. No. 75121 Rev. B | Piper PA-24, PA-24-250, PA-24-260 | 2007-11-15 | current |
| Mod Works INC | One Piece Windshield 561.250 | Modification Part | Mooney Aircraft M20C, D, E | 2000-12-11 | current |
| Kosola and Associates INC | One-Piece Windshield Kit 97016-001 | Modification Part | Piper PA-34-200PA-34-200T | 1997-07-29 | current |
| Kosola and Associates INC | One-Piece Windshield 95032 | Modification Part | Piper PA-32 Series | 1997-02-12 | current |
| Kosola and Associates INC | One-Piece Windshield Kosola and Associates,... | Modification Part | Piper PA-44-180, PA-44-180T | 1995-03-21 | current |
| LP Aero Plastics INC | One Piece Windshield 999 | Gene 75121-1 | Piper PA-24, PA-24-250, PA-24-260 and... | 1994-11-21 | current |
| Southwest Aero-Mods INC | One Piece Windshield Unknown | Unknown | Piper PA-23, PA-23-160, PA-23-235 | 1993-08-26 | current |
| Southwest Aero-Mods INC | One Piece Windshield Unknown | Unknown | Piper PA-23, PA-23-160, PA-23-235 | 1993-08-26 | current |
| Safe Air Repair INC | One Piece Landing Gear Axle Assembly SAR 7-807 | American Champion 7-807 | American Champion 11CC, 11AC, 7AC | 1993-04-21 | current |
| Great Lakes Aero Products | One-Piece Winshield W-2050 or W/T-2050 | Modification Part | Beech Raytheon) (35, A35, B35 | 1991-10-17 | 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.