sensors Mode-S transponder
AAC209
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N79212 · CESSNA 172 Skyhawk · operated by HUDSON RAE AIR LLC
- Hex
- AAC209
- Octal
- 52541011
- Decimal
- 11,190,793
- Country
- US
- Tail
- N79212
- Type
- C172
- Flights observed
- 43
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 25d ago
Last known position
Country allocation
The ICAO 24-bit address AAC209 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.
Callsign history 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| N79212 | - | 43 | 2026-06-24 |
Recent flights last 43
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-24 | N79212 | TWH → CLD | Jun 24, 22:14 UTC | Jun 24, 23:24 UTC | 1h 10m |
| 2026-06-24 | N79212 | - | Jun 24, 18:34 UTC | Jun 24, 19:20 UTC | 45m |
| 2026-06-24 | N79212 | SBD → CLD | Jun 24, 00:05 UTC | Jun 24, 01:04 UTC | 1h 0m |
| 2026-06-23 | N79212 | CLD → SBD | Jun 23, 22:29 UTC | Jun 23, 23:10 UTC | 40m |
| 2026-06-23 | N79212 | - | Jun 23, 19:10 UTC | Jun 23, 20:15 UTC | 1h 5m |
| 2026-06-21 | N79212 | CLD → CLD | Jun 21, 23:50 UTC | Jun 22, 00:29 UTC | 40m |
| 2026-06-20 | N79212 | - | Jun 20, 21:19 UTC | Jun 20, 23:34 UTC | 2h 15m |
| 2026-06-20 | N79212 | CLD → BXK | Jun 20, 18:14 UTC | Jun 20, 20:25 UTC | 2h 10m |
| 2026-06-17 | N79212 | - | Jun 17, 00:50 UTC | Jun 17, 01:25 UTC | 35m |
| 2026-06-16 | N79212 | CLD → CNO | Jun 16, 23:15 UTC | Jun 16, 23:55 UTC | 40m |
| 2026-06-14 | N79212 | - | Jun 14, 22:00 UTC | Jun 14, 22:55 UTC | 55m |
| 2026-06-14 | N79212 | CLD → CLD | Jun 14, 19:30 UTC | Jun 14, 20:20 UTC | 50m |
| 2026-06-12 | N79212 | CLD → CLD | Jun 12, 21:25 UTC | Jun 12, 21:40 UTC | 15m |
| 2026-06-07 | N79212 | CLD → CLD | Jun 7, 22:05 UTC | Jun 8, 00:10 UTC | 2h 5m |
| 2026-06-07 | N79212 | - | Jun 7, 20:35 UTC | Jun 7, 20:50 UTC | 15m |
| 2026-06-07 | N79212 | - | Jun 7, 18:55 UTC | Jun 7, 19:15 UTC | 20m |
| 2026-06-04 | N79212 | - | Jun 4, 20:20 UTC | Jun 4, 21:45 UTC | 1h 25m |
| 2026-06-04 | N79212 | - | Jun 4, 01:55 UTC | Jun 4, 02:35 UTC | 40m |
| 2026-06-03 | N79212 | - | Jun 3, 23:50 UTC | Jun 4, 00:50 UTC | 1h 0m |
| 2026-06-02 | N79212 | - | Jun 2, 01:25 UTC | Jun 2, 02:00 UTC | 35m |
| 2026-06-01 | N79212 | - | Jun 1, 23:45 UTC | Jun 2, 00:25 UTC | 40m |
| 2026-06-01 | N79212 | - | Jun 1, 20:10 UTC | Jun 1, 20:35 UTC | 25m |
| 2026-05-31 | N79212 | - | May 31, 21:05 UTC | May 31, 21:45 UTC | 40m |
| 2026-05-30 | N79212 | CLD → CLD | May 30, 21:45 UTC | May 30, 23:00 UTC | 1h 15m |
| 2026-05-30 | N79212 | - | May 30, 18:40 UTC | May 30, 19:25 UTC | 45m |
| 2026-05-28 | N79212 | CLD → CLD | May 28, 23:20 UTC | May 29, 00:30 UTC | 1h 10m |
| 2026-05-25 | N79212 | SBA → CLD | May 25, 21:35 UTC | May 25, 23:45 UTC | 2h 10m |
| 2026-05-25 | N79212 | CLD → SBA | May 25, 17:35 UTC | May 25, 19:15 UTC | 1h 40m |
| 2026-05-23 | N79212 | - | May 23, 19:15 UTC | May 23, 20:15 UTC | 1h 0m |
| 2026-05-22 | N79212 | CLD → CLD | May 22, 23:50 UTC | May 23, 00:45 UTC | 55m |
| 2026-05-15 | N79212 | CLD → CLD | May 15, 23:50 UTC | May 16, 00:15 UTC | 25m |
| 2026-05-13 | N79212 | - | May 13, 23:40 UTC | May 14, 00:15 UTC | 35m |
| 2026-05-09 | N79212 | - | May 9, 22:49 UTC | May 9, 23:44 UTC | 55m |
| 2026-05-08 | N79212 | - | May 8, 21:50 UTC | May 8, 22:55 UTC | 1h 5m |
| 2026-05-07 | N79212 | - | May 7, 21:20 UTC | May 7, 22:35 UTC | 1h 15m |
| 2026-04-23 | N79212 | - | Apr 23, 19:45 UTC | Apr 23, 20:15 UTC | 30m |
| 2026-04-23 | N79212 | - | Apr 23, 16:05 UTC | Apr 23, 16:35 UTC | 30m |
| 2026-04-22 | N79212 | - | Apr 22, 00:00 UTC | Apr 22, 00:20 UTC | 20m |
| 2026-04-19 | N79212 | - | Apr 19, 22:25 UTC | Apr 19, 23:30 UTC | 1h 5m |
| 2026-04-19 | N79212 | - | Apr 19, 17:55 UTC | Apr 19, 18:45 UTC | 50m |
| 2026-04-18 | N79212 | RAL → CLD | Apr 18, 22:10 UTC | Apr 18, 22:45 UTC | 35m |
| 2026-04-18 | N79212 | - | Apr 18, 18:50 UTC | Apr 18, 19:20 UTC | 30m |
| 2026-04-18 | N79212 | - | Apr 18, 16:10 UTC | Apr 18, 16:35 UTC | 25m |
About Mode-S
A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.
Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.
Prefer a tail-number view? See the N79212 page for operator, model, and routing details .