Alexander Schleicher ASK 21
N421EF is an Alexander Schleicher ASK 21, a glider with no engine, built in 2013. It has 2 seats. It is registered to Soaring Society Of Boulder, a corporation in Boulder, Colorado. The registration is valid: it was issued on October 23, 2014 and expires on October 31, 2027. It holds a standard airworthiness certificate for utility, dated August 29, 2013.
Alexander Schleicher: AS 33 ME
Aircraft
- Maker
- Alexander Schleicher (Germany)FAA spelling: ALEXANDER SCHLEICHER GMBH & CO
- Model
- ASK 21
- Serial number
- 21905
- Type
- Glider
- Power
- None · None NONE
- Seats
- 2
- Year built
- 2013
- Transponder code
- A4FFC0 (octal 51177700)
Registration
- Status
- Valid registration
- Certificate issued
- October 23, 2014
- Expires
- October 31, 2027
- Last FAA action
- March 24, 2023
- Airworthiness
- Standard · Utility · August 29, 2013
- FAA region
- Northwest Mountain
- FAA record id
- 01129860
Owner as the FAA publishes it
- Name
- Soaring Society Of Boulder
- Type
- Corporation
- Address
- PO Box 17577
Boulder, CO 80308-0577
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