- Cancelled
- June 15, 2009
- Status when cancelled
- Registration revoked
- Serial number
- SEM80
- Year built
- 1973
- Type
- Balloon
- Engine
- None
- Airworthiness
- Experimental, exhibition
- Certificate issued
- August 27, 1973
- Last registry action
- January 14, 1977
- Mode S code
- A18F3D
- Owner when cancelled
- Research Operations Inc
- Location
- Quakertown, PA
- Owner type
- Corporation
From the FAA registry file of October 29, 2026, cancelled registrations. Owners’ street addresses are left out. The Mode S code belongs to the N-number, not the airframe.