Not currently tracked · last seen 1d ago
- Flights observed
- 15
- Avg flight time
- 1h 18m
- Typical route
- -
- Last seen
- 1d ago
Last known area
Recent flights last 15
| Date | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|
| 2026-07-12 | - | Jul 12, 14:15 UTC | Jul 12, 14:40 UTC | 25m |
| 2026-07-01 | - | Jul 1, 14:05 UTC | Jul 1, 15:10 UTC | 1h 5m |
| 2026-05-29 | - | May 29, 20:05 UTC | May 29, 20:20 UTC | 15m |
| 2026-05-29 | - | May 29, 16:05 UTC | May 29, 16:25 UTC | 20m |
| 2026-05-21 | - | May 21, 15:35 UTC | May 21, 18:30 UTC | 2h 55m |
| 2026-05-21 | - | May 21, 12:05 UTC | May 21, 14:50 UTC | 2h 45m |
| 2026-05-16 | - | May 16, 12:31 UTC | May 16, 12:55 UTC | 25m |
| 2026-05-08 | - | May 8, 14:40 UTC | May 8, 17:25 UTC | 2h 45m |
| 2026-05-08 | - | May 8, 10:39 UTC | May 8, 13:35 UTC | 2h 55m |
| 2026-05-07 | - | May 7, 19:15 UTC | May 7, 20:25 UTC | 1h 10m |
| 2026-05-07 | - | May 7, 17:25 UTC | May 7, 18:20 UTC | 55m |
| 2026-05-05 | - | May 5, 18:00 UTC | May 5, 18:15 UTC | 15m |
| 2026-05-05 | - | May 5, 14:40 UTC | May 5, 15:15 UTC | 35m |
| 2026-04-23 | - | Apr 23, 20:35 UTC | Apr 23, 20:50 UTC | 15m |
| 2026-04-12 | - | Apr 12, 17:15 UTC | Apr 12, 19:50 UTC | 2h 35m |
Specifications
| Registration | N621SM |
| Operator | SIERRA MIKE LLC |
| Mode-S code | A81B90 · 52015620 (octal) |
Looking for transponder-level data? View the Mode-S A81B90 page for country allocation, callsign history, and ADS-B signal details.
N621SM frequently asked
Who operates N621SM?
N621SM is operated by SIERRA MIKE LLC.
What is the Mode-S transponder code for N621SM?
N621SM broadcasts on Mode-S (ICAO 24-bit) address A81B90 (octal 52015620). View the transponder page.
Where is N621SM right now?
N621SM is not currently being tracked; last seen 1d ago.