There're 5 aircraft made by Gehrlein.
| N3973 | 0000 Gehrlein GP-1 | 007 | 0 | 1 | OH, |
| N3KR | 1973 Gehrlein GP-1 | 4 | 0 | 1 | AZ, United States |
| N5471 | 1968 Gehrlein GP-1 | 1 | 0 | 1 | PA, United States |
| N7094 | 1974 Gehrlein GP-1 | 3 | 0 | 1 | CA, United States |
| N99Z | 1971 Gehrlein GP-1 | 2 | 0 | 1 | PA, United States |
