sensors Mode-S transponder
AB20BC
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N816MC · CIRRUS SR-22T Turbo · operated by MCA AVIATION LLC
- Hex
- AB20BC
- Octal
- 52620274
- Decimal
- 11,215,036
- Country
- US
- Tail
- N816MC
- Type
- S22T
- Flights observed
- 44
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 26, 19:40 UTC
Last known position
Country allocation
The ICAO 24-bit address AB20BC 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 |
|---|---|---|---|
| N816MC | - | 44 | 2026-07-26 |
Recent flights last 44
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | N816MC | - | Jul 26, 18:30 UTC | Jul 26, 19:40 UTC | 1h 10m |
| 2026-07-20 | N816MC | - | Jul 20, 19:30 UTC | Jul 20, 21:10 UTC | 1h 40m |
| 2026-07-15 | N816MC | - | Jul 15, 13:50 UTC | Jul 15, 14:45 UTC | 55m |
| 2026-07-12 | N816MC | - | Jul 12, 13:10 UTC | Jul 12, 14:45 UTC | 1h 35m |
| 2026-07-10 | N816MC | - | Jul 10, 14:25 UTC | Jul 10, 15:15 UTC | 50m |
| 2026-07-05 | N816MC | - | Jul 5, 11:35 UTC | Jul 5, 13:05 UTC | 1h 30m |
| 2026-07-04 | N816MC | - | Jul 4, 13:00 UTC | Jul 4, 14:25 UTC | 1h 25m |
| 2026-07-03 | N816MC | - | Jul 3, 14:25 UTC | Jul 3, 15:55 UTC | 1h 30m |
| 2026-06-29 | N816MC | - | Jun 29, 19:29 UTC | Jun 29, 20:30 UTC | 1h 0m |
| 2026-06-27 | N816MC | - | Jun 27, 19:05 UTC | Jun 27, 20:44 UTC | 1h 40m |
| 2026-06-27 | N816MC | - | Jun 27, 15:45 UTC | Jun 27, 16:59 UTC | 1h 15m |
| 2026-06-26 | N816MC | - | Jun 26, 19:55 UTC | Jun 26, 21:04 UTC | 1h 10m |
| 2026-06-26 | N816MC | - | Jun 26, 15:45 UTC | Jun 26, 16:09 UTC | 25m |
| 2026-06-25 | N816MC | - | Jun 25, 20:34 UTC | Jun 25, 20:45 UTC | 10m |
| 2026-06-25 | N816MC | - | Jun 25, 17:09 UTC | Jun 25, 17:25 UTC | 15m |
| 2026-06-25 | N816MC | - | Jun 25, 16:09 UTC | Jun 25, 16:24 UTC | 15m |
| 2026-06-16 | N816MC | - | Jun 16, 17:24 UTC | Jun 16, 17:35 UTC | 10m |
| 2026-06-16 | N816MC | - | Jun 16, 15:35 UTC | Jun 16, 16:10 UTC | 35m |
| 2026-06-16 | N816MC | - | Jun 16, 14:20 UTC | Jun 16, 14:30 UTC | 10m |
| 2026-06-03 | N816MC | - | Jun 3, 14:55 UTC | Jun 3, 15:25 UTC | 30m |
| 2026-05-31 | N816MC | - | May 31, 19:30 UTC | May 31, 20:00 UTC | 30m |
| 2026-05-30 | N816MC | - | May 30, 16:25 UTC | May 30, 16:45 UTC | 20m |
| 2026-05-30 | N816MC | - | May 30, 14:05 UTC | May 30, 14:30 UTC | 25m |
| 2026-05-29 | N816MC | - | May 29, 17:35 UTC | May 29, 18:05 UTC | 30m |
| 2026-05-26 | N816MC | - | May 26, 12:10 UTC | May 26, 14:35 UTC | 2h 25m |
| 2026-05-21 | N816MC | - | May 21, 19:40 UTC | May 21, 21:50 UTC | 2h 10m |
| 2026-05-18 | N816MC | - | May 18, 00:40 UTC | May 18, 02:10 UTC | 1h 30m |
| 2026-05-17 | N816MC | - | May 17, 21:50 UTC | May 17, 23:40 UTC | 1h 50m |
| 2026-05-13 | N816MC | - | May 13, 18:35 UTC | May 13, 18:50 UTC | 15m |
| 2026-05-13 | N816MC | - | May 13, 14:15 UTC | May 13, 17:00 UTC | 2h 45m |
| 2026-05-10 | N816MC | - | May 10, 20:05 UTC | May 10, 20:35 UTC | 30m |
| 2026-05-10 | N816MC | - | May 10, 16:40 UTC | May 10, 19:05 UTC | 2h 25m |
| 2026-05-08 | N816MC | - | May 8, 17:20 UTC | May 8, 19:25 UTC | 2h 5m |
| 2026-05-03 | N816MC | - | May 3, 20:49 UTC | May 3, 21:14 UTC | 25m |
| 2026-04-29 | N816MC | - | Apr 29, 21:05 UTC | Apr 29, 21:25 UTC | 20m |
| 2026-04-26 | N816MC | - | Apr 26, 21:30 UTC | Apr 26, 22:00 UTC | 30m |
| 2026-04-24 | N816MC | - | Apr 24, 20:35 UTC | Apr 24, 21:00 UTC | 25m |
| 2026-04-24 | N816MC | - | Apr 24, 19:00 UTC | Apr 24, 19:20 UTC | 20m |
| 2026-04-24 | N816MC | - | Apr 24, 13:50 UTC | Apr 24, 14:15 UTC | 25m |
| 2026-04-22 | N816MC | - | Apr 22, 23:30 UTC | Apr 22, 23:55 UTC | 25m |
| 2026-04-22 | N816MC | - | Apr 22, 21:00 UTC | Apr 22, 21:20 UTC | 20m |
| 2026-04-19 | N816MC | - | Apr 19, 20:45 UTC | Apr 19, 21:10 UTC | 25m |
| 2026-04-17 | N816MC | - | Apr 17, 12:40 UTC | Apr 17, 13:05 UTC | 25m |
| 2026-04-13 | N816MC | - | Apr 13, 12:55 UTC | Apr 13, 15:10 UTC | 2h 15m |
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 N816MC page for operator, model, and routing details .