| Crash location | Unknown |
| Nearest city | Davenport, IA
41.523644°N, 90.577637°W |
| Tail number | N4227N |
|---|---|
| Accident date | 23 Jun 1991 |
| Aircraft type | Heal SONERAI-I |
| Additional details: | None |
FAILURE OF THE WING SPAR STRAPS, AS THE AIRCRAFT WAS BEING MANEUVERED AROUND A PYLON IN AN AIR RACE.