| | N275TW | Private | Unallocated | -0001 | Unallocated frame, notes 'Allen David K NUWACO T10', if known please update accordingly |
| | N429 | Private | Unallocated | -0001 | Unallocated frame, notes 'Tips And Smith Inc UNITED', if known please update accordingly |
| | N3153K | Private | Unallocated | -0001 | Unallocated frame, notes 'Allied 2', if known please update accordingly |
| | N1901G | Private | Unallocated | -0001 | Unallocated frame, notes 'Kosch Andrew J WHITEHEAD #21', if known please update accordingly |
| | N523 | Private | Unallocated | 2006 | Unallocated frame, notes 'Elmendorf Leonard C ES 2 ', if known please update accordingly |
| | N72BZ | Private | Unallocated | 2009 | Unallocated frame, notes 'Smith Aviation Corp PA-18 REPLICA ', if known please update accordingly. Owner/Operator Parker Bruce C |
| | N21CU | Private | Unallocated | 2010 | Unallocated frame, notes 'Homebuilt THATCHER CX4', if known please update accordingly. Owner/Operator Pritchard Harold R |
| | N64SK | Private | Unallocated | 2010 | Unallocated frame, notes 'Homebuilt SKYOTE', if known please update accordingly. Owner/Operator Beyer Mark E |
| | N5913S | Private | Unallocated | 2011 | Unallocated frame, notes 'Homebuilt WA SPORT CRUISER', if known please update accordingly. Owner/Operator Stoican Steve Gene |
| | N21QT | Private | Unallocated | 2011 | Unallocated frame, notes 'Homebuilt SEA HAWKER', if known please update accordingly. Owner/Operator Harper Ken C |
| | N821Z | Private | Unallocated | 2015 | Unallocated frame, notes 'Homebuilt HP-11A', if known please update accordingly. Owner/Operator Wiese Paul R |
| | N502NU | Private | Unallocated | 2016 | Unallocated frame, notes 'Nasa Langley Research Center EDGE 540', if known please update accordingly. Owner/Operator Nasa Langley Research Center |
| | N22LN | Private | Unallocated | 2016 | Unallocated frame, notes 'Homebuilt NEW LONGREN ', if known please update accordingly. Owner/Operator Miller John J Trustee |
| | N272T | Private | Unallocated | 2018 | Unallocated frame, notes 'Staudacher Aircraft S-300D2 ', if known please update accordingly. Owner/Operator G-Load Aviation Llc |
| | G-ACXE | Unallocated | Unallocated | 2024 | Private | Unallocated | Unallocated | Unallocated Frame | KLEMM L25C |