HB-1589 — ASK 21 of Segelfluggruppe Olten
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Live status
Last seen on radar: July 12, 2026.
Facts
- Type
- ASK 21
- Manufacturer
- Schleicher
- Operator
- Segelfluggruppe Olten
- Country
- Switzerland
- Built
- 1981
- Serial (MSN)
- 21078
- ICAO hex
- 4B4ADC
Rarity & spotters
★★★☆☆HB-1589 is one of 467 ASK 21 in our database.
Activity
From our radar history of the last 7 days.
- Flights
- 5
- Airborne time
- 14.8 h
- Max altitude
- 7,140 ft
- Max speed
- 132 kt
- Typical cruise
- 3,808 ft · 55 kt
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Airborne minutes per weekday (UTC)
00
04
08
12
16
20
Airborne minutes per hour of day (UTC)
Likely based at LSPO — judging by take-off and landing patterns over the last 30 days.
About the type: Schleicher ASK 21
The ASK 21 is a glass-reinforced plastic (GRP) two-seat glider aircraft with a T-tail. The ASK 21 is designed primarily for beginner instruction, but is also suitable for cross-country flying and aerobatic instruction.
More aircraft operated by Segelfluggruppe Olten
More ASK 21
Track it live on the map
See HB-1589 and the surrounding airspace in real time in the spotter radar — get the Aero.Academy app now.