Alexander Schleicher ASK 21
N421GB is an Alexander Schleicher ASK 21, a glider with no engine, built in 2016. It has 2 seats. It is registered to Greater Boston Soaring Club INC, a corporation in Sterling, Massachusetts. The registration is valid: it was issued on August 12, 2016 and expires on August 31, 2029. It holds a standard airworthiness certificate for normal, dated September 14, 2016.
Alexander Schleicher: AS 33 ME
Aircraft
- Maker
- Alexander Schleicher (Germany)FAA spelling: ALEXANDER SCHLEICHER GMBH & CO
- Model
- ASK 21 · all ASK 21s and related versions
- Serial number
- 21937
- Type
- Glider
- Power
- None · None NONE
- Seats
- 2
- Year built
- 2016
- Transponder code
- A4FFEE (octal 51177756)
Registration
- Status
- Valid registration
- Certificate issued
- August 12, 2016
- Expires
- August 31, 2029
- Last FAA action
- August 25, 2023
- Airworthiness
- Standard · Normal · September 14, 2016
- FAA region
- New England
- FAA record id
- 01203163
Owner as the FAA publishes it
- Name
- Greater Boston Soaring Club INC
- Type
- Corporation
- Address
- PO Box 655
Sterling, MA 01564-0655
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.
Earlier use of this number 1
Records check free · 1 to understand · 4 clear
The public federal record on N421GB, read the way a buyer, lender or insurer reads it: FAA registration, prior tail numbers keyed on the serial number, reuse of the tail number, recent registry filings, and the NTSB accident record under this and every earlier registration.
Valid registration to Greater Boston Soaring Club INC, a corporation, certificate issued August 12, 2016, expires August 31, 2029. No fractional interest recorded. [1]
Standard certificate for normal, dated September 14, 2016, consistent with the 2016 manufacture year. [1]
No earlier tail number is recorded against serial 21937 for this model in the deregistered file. [2]
N421GB was previously assigned to 1 other aircraft: Cessna 421A (serial 421A0116, cancelled August 11, 2003). Histories keyed to the tail number alone can mix aircraft up; this check keys on the serial number. [2]
No bills of sale, loans or releases have reached the registry in recent weeks. The index covers only recent filings; older liens are in the records file. [3]
No NTSB investigation records located under N421GB. CLEAR means the query ran and returned nothing, not that nothing ever happened. [4]
These live in the FAA aircraft records file (every document ever filed against the aircraft) and, for larger aircraft, the International Registry. Part of the full report.
AD compliance against the logbooks and flight-activity reconciliation are researched layers of the full report.
- FAA Releasable Aircraft Database, master file, file of October 2, 2026. registry.faa.gov/
- FAA deregistered aircraft file (part of the same download), file of October 2, 2026. registry.faa.gov/
- FAA document index: registry documents received in recent weeks, file of October 2, 2026. registry.faa.gov/
- NTSB aviation accident database (CAROL), records through August 27, 2026. data.ntsb.gov/carol-main-public/basic-search
This automated check reads the public federal record. Nothing here is a legal opinion, an appraisal or a statement about the aircraft's condition; a CLEAR line is a statement about the searched record, not the aircraft.
Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 2, 2026. See this record on the FAA site · This record as data