flight Aircraft
N421EF
SCHLEICHER ASK-21
Operated by SOARING SOCIETY OF BOULDER
- Tail number
- N421EF
- Type
- AS21
- Mode-S
- A4FFC0
Not currently tracked · last seen 2h ago
- Flights observed
- 5
- Avg flight time
- 1h 7m
- Typical route
- WBU → WBU
- Last seen
- 2h ago
Last known area
Recent flights last 5
| Date | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|
| 2026-04-22 | WBU → WBU | Apr 22, 16:05 UTC | Apr 22, 17:40 UTC | 1h 35m |
| 2026-04-21 | - | Apr 21, 21:45 UTC | Apr 21, 23:45 UTC | 2h 0m |
| 2026-04-19 | WBU → WBU | Apr 19, 16:45 UTC | Apr 19, 17:45 UTC | 1h 0m |
| 2026-04-19 | WBU → WBU | Apr 19, 15:25 UTC | Apr 19, 15:50 UTC | 25m |
| 2026-04-12 | - | Apr 12, 19:40 UTC | Apr 12, 20:15 UTC | 35m |
Specifications
| Registration | N421EF |
| Aircraft type | SCHLEICHER ASK-21 (AS21) |
| Operator | SOARING SOCIETY OF BOULDER |
| Mode-S code | A4FFC0 · 51177700 (octal) |
Looking for transponder-level data? View the Mode-S A4FFC0 page for country allocation, callsign history, and ADS-B signal details.
N421EF frequently asked
What type of aircraft is N421EF?
N421EF is a SCHLEICHER ASK-21 (ICAO type code AS21).
Who operates N421EF?
N421EF is operated by SOARING SOCIETY OF BOULDER.
What is the Mode-S transponder code for N421EF?
N421EF broadcasts on Mode-S (ICAO 24-bit) address A4FFC0 (octal 51177700). View the transponder page.
What route does N421EF typically fly?
N421EF most frequently flies between WBU and WBU based on observed flights.
Where is N421EF right now?
N421EF is not currently being tracked; last seen 2h ago.