Gliders, Balloons & Other/ALEXANDER SCHLEICHER GMBH & CO/ASK 21/N421EF

N421EF — 2013 ALEXANDER SCHLEICHER GMBH & CO ASK 21

Registry aircraft record

✦FAA Registry Record

N-NumberN421EF

Serial number21905

ManufacturerALEXANDER SCHLEICHER GMBH & CO

ModelASK 21

Year built2013

RegistrantSOARING SOCIETY OF BOULDER

Registry statusRegistered (V)

RegistrationRegistration current · expires 31 Oct 2027

AirworthinessAirworthiness certificate on file

Last action2023-03-24

Source: FAA (United States) · updated Oct 22, 2026

One of 26 active ALEXANDER SCHLEICHER GMBH & CO ASK 21s across the 4 registries BuyJet tracks. Registry record last updated Oct 22, 2026.

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About N421EF

N421EF is a 2013 ALEXANDER SCHLEICHER GMBH & CO ASK 21 registered with the FAA (United States).

Yes — the FAA (United States) lists N421EF as registered (registry data updated 2026-10-22).

The ALEXANDER SCHLEICHER GMBH & CO ASK 21 has 2 seats and 0 engines.