N5121
Stemme Gmbh & Co S10-VT
Valid
Colorado
N5121 is a Stemme Gmbh & Co S10-VT, a glider with a four-stroke engine. It has 2 seats. It is registered to Mountain Stemme LLC, an LLC in Boulder, Colorado. The registration is valid: it was issued on August 26, 2025 and expires on August 31, 2032. No airworthiness certificate is on file, which is normal for drones and for aircraft still being built or tested.
Aircraft
- Maker
- Stemme Gmbh & Co
- Model
- S10-VT
- Serial number
- 11-023
- Type
- Glider
- Power
- Four-cycle piston, 1 motor
- Seats
- 2
- Year built
- Not given
- Transponder code
- A66B58 (octal 51465530)
Registration
- Status
- Valid registration
- Certificate issued
- August 26, 2025
- Expires
- August 31, 2032
- Last FAA action
- August 26, 2025
- Airworthiness
- None on file
- FAA region
- Northwest Mountain
- FAA record id
- 00085752
Owner as the FAA publishes it
- Name
- Mountain Stemme LLC
- Type
- LLC
- Address
- PO Box 17088
Boulder, CO 80308-0088
Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.
Documents on file 0
No bills of sale, loans or other documents are indexed against this tail number.
Source: FAA Civil Aviation Registry, Releasable Aircraft Database, September 25, 2026. See this record on the FAA site · This record as data