| | N19KN | Private | Unallocated | -0001 | Unallocated frame, notes 'Slepcev Nestor STORCH', if known please update accordingly |
| | N3971J | Private | Unallocated | -0001 | Unallocated frame, notes 'Homebuilt WICHAWK ', if known please update accordingly. Owner/Operator Registration Pending |
| | N11371 | Private | Unallocated | 1931 | Unallocated frame, notes 'Morgan Ramond/Deffendall Hugh CRAWFORD A1', if known please update accordingly |
| | N7013 | Private | Unallocated | 1941 | Unallocated frame, notes 'A V Roe & Co Ltd AVRO BIPLANE', if known please update accordingly |
| | N5596S | Private | Unallocated | 1980 | Unallocated frame, notes 'Homebuilt HP-18', if known please update accordingly. Owner/Operator Patton Bruce H |
| | N69FE | Private | Unallocated | 1994 | Unallocated frame, notes 'W A Fee Ltd A4 ADVENTURER 2+2', if known please update accordingly |
| | N176H | Private | Unallocated | 1994 | Unallocated frame, notes 'Homebuilt NEW STANDARD D-25 ', if known please update accordingly. Owner/Operator Rhinebeck Aerodrome Museum |
| | N138EZ | Private | Unallocated | 1995 | Unallocated frame, notes 'Homebuilt DEFIANT ', if known please update accordingly. Owner/Operator Toelaer John C |
| | N138SB | Private | Unallocated | 2012 | Unallocated frame, notes 'Homebuilt DK-2 ', if known please update accordingly. Owner/Operator Peterson Steven W |
| | N76GW | Private | Unallocated | 2013 | Unallocated frame, notes 'Homebuilt SONERAI-II', if known please update accordingly. Owner/Operator Bryant Eric W |
| | N24BX | Private | Unallocated | 2019 | Unallocated frame, notes 'Homebuilt SA-300 STARDUSTER ', if known please update accordingly. Owner/Operator Colvin Clu D |
| | N136MS | Private | Unallocated | 2021 | Unallocated frame, notes 'Homebuilt SUPER CUB ', if known please update accordingly. Owner/Operator Terhune Jack E |