Unknown Year Interstate S-1B1
8 aircraft with no manufacture year in FAA records
8
Active
100%
Active rate
7
States
Specs
- Seats
- 2
- Engines
- 1
- Engine type
- LYCOMING 0-320 SERIES
- Power
- 180 hp
- Cruise speed
- 87 mph
About the Unknown Year Interstate S-1B1
There are 8 registered Unknown Year Interstate S-1B1 and 22 Interstate S-1B1 across all years in the United States. First produced in 1942. Average fleet age is 80 years.
Get S-1B1 Market Updates
New registrations, sales activity, and fleet trends — delivered to your inbox.



