The Alexander Schleicher ASK 21 (ICAO type AS21) is an aircraft of Germany origin. It has a maximum take-off weight of 700 kg. It offers a maximum range of 300 nm, a cruise speed of 75 knots and seating for up to 2 across its variants.
Alexander Schleicher ASK 21
Fleet & certification
- Built
- 719
- Active
- 718
- Origin
- Germany
1 for sale right now
Per-variant specifications
The FAA paperwork
TCDS G47EU · Rev 2 · issued 2019-07-03
The FAA-issued Type Certificate for this model is on file (TCDS G47EU), but we haven't yet extracted the structured spec values.
Read the TCDS (PDF) →Where to look next
Alexander Schleicher ASK 21 market & fleet intelligence
Registry, flight-tracking and market data on the Alexander Schleicher ASK 21 fleet — updated daily.
18 yearsmedian age
Of the 104 registered Alexander Schleicher ASK 21 with a known build year (14% of the 719 we track), the median age is 18 years.
5changed registration in 12 months
5 of the 719 registered Alexander Schleicher ASK 21 we track changed registration in the last 12 months (1% of the fleet), across 5 registration events. Registration changes include ownership transfers, re-registrations and address updates — not all are sales.
- Aircraft seen flying
- 1
- Tracked flights
- 1
- Tracked flight hours
- 0
- Share of fleet flying
- 0%
1 Alexander Schleicher ASK 21 were tracked flying in the last 90 days (0% of the registered fleet), across 1 flights. Sprinkle flight tracking began May 2026; coverage is ADS-B-derived and not exhaustive.
1Alexander Schleicher ASK 21 listed for sale
Browse Alexander Schleicher ASK 21 for sale →What is the range of the Alexander Schleicher ASK 21?
The Alexander Schleicher ASK 21 has a maximum range of 300 nautical miles across variants.
How many people can the Alexander Schleicher ASK 21 carry?
The Alexander Schleicher ASK 21 seats up to 2 across its variants.
What is the MTOW of the Alexander Schleicher ASK 21?
The Alexander Schleicher ASK 21's maximum take-off weight is 700 kg.
What is the ICAO type designator for the Alexander Schleicher ASK 21?
The Alexander Schleicher ASK 21's ICAO type designator is AS21.
How many Alexander Schleicher ASK 21 aircraft are registered worldwide?
Sprinkle tracks 719 registered Alexander Schleicher ASK 21 airframes worldwide.
Registered ASK 21 aircraft
Individual ASK 21 airframes by tail number — registration history, operator and lineage.
- C-FGUD· 2025
- VH-GOZ· 2023
- N696CT· 2022
- N122MN· 2022
- N211MS· 2020
- C-FXCN· 2020
- N521CG· 2019
- N214BS· 2018
- N3211W· 2018
- N940PB· 2018
- VH-GTY· 2018
- N211RM· 2018
- N211BM· 2018
- N899MA· 2017
- N899SA· 2017
- N421GB· 2016
- N221CW· 2015
- N721RC· 2015
- N648BS· 2014
- C-GPWP· 2014
- N468SA· 2014
- VH-NQK· 2014
- N214WS· 2014
- VH-NQU· 2014