Aircraft Description
Model Year
2013
Manufacturer
ALEXANDER SCHLEICHER GMBH & CO
Model
ASK 21
Type Aircraft
Glider
ICAO Type Code
AS21ASK-21Mi
Weight Class
Up to 12,500 lbs
Airworthiness Date
August 29, 2013
Classification
Standard Utility Category
Type Registration
Corporation
Status
Valid Registration
Cert Issue Date
October 23, 2014
Registered Owner
Name
SOARING SOCIETY OF BOULDER
Address
PO BOX 17577
City
BOULDER
State / Zip Code
Colorado80308-0577
Country
United States
Powerplant & Avionics
Engine Type
None
Number of Engines
—
Engine Manufacturer
NONE
Engine Model
NONE
Mode S Code (Oct)
51177700
Mode S Code (Hex)
A4FFC0
Additional Details
Registration
N421EF
Serial Number
21905
Number of Engines
—
Number of Seats
2
Expiration Date
October 31, 2027
Last Action Date
March 24, 2023
Last Update Date
January 19, 2026
Unique ID
01129860
Last Known Position
Date
March 20, 2026 (UTC 18:36:56)
Airport
—
Latitude
40.039764
Longitude
-105.217957
Data Source
Data provided by the US Federal Aviation Administration. View on FAA.gov
Last updated: 2026-03-15 01:32:20 UTC