sensors Mode-S transponder
AE4BF1
ICAO 24-bit transponder address
Currently assigned to 2317 · CASA HC-144A Ocean Sentry
- Hex
- AE4BF1
- Octal
- 53445761
- Decimal
- 11,422,705
- Tail
- 2317
- Type
- CN35
- Flights observed
- 73
- Distinct callsigns
- 4
- Country
- -
- Last broadcast
- Jul 2, 16:30 UTC
Last known position
Callsign history 4 distinct
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-02 | C2317 | - | Jul 2, 14:00 UTC | Jul 2, 16:30 UTC | 2h 30m |
| 2026-07-01 | C2317 | - | Jul 1, 13:55 UTC | Jul 1, 16:15 UTC | 2h 20m |
| 2026-07-01 | C2317 | - | Jul 1, 00:20 UTC | Jul 1, 02:10 UTC | 1h 50m |
| 2026-06-30 | C2317 | - | Jun 30, 21:05 UTC | Jun 30, 23:50 UTC | 2h 45m |
| 2026-06-29 | C2317 | - | Jun 29, 21:05 UTC | Jun 29, 23:49 UTC | 2h 45m |
| 2026-06-26 | C2317 | - | Jun 26, 14:05 UTC | Jun 26, 15:25 UTC | 1h 20m |
| 2026-06-25 | C2317 | - | Jun 25, 18:55 UTC | Jun 25, 20:19 UTC | 1h 25m |
| 2026-06-25 | C2317 | - | Jun 25, 13:50 UTC | Jun 25, 16:20 UTC | 2h 30m |
| 2026-06-24 | C2317 | - | Jun 24, 17:55 UTC | Jun 24, 18:15 UTC | 20m |
| 2026-06-24 | C2317 | - | Jun 24, 16:14 UTC | Jun 24, 16:29 UTC | 15m |
| 2026-06-24 | C2317 | - | Jun 24, 15:05 UTC | Jun 24, 15:29 UTC | 25m |
| 2026-06-24 | C2317 | - | Jun 24, 13:14 UTC | Jun 24, 13:40 UTC | 25m |
| 2026-06-18 | C2317 | - | Jun 18, 16:40 UTC | Jun 18, 18:15 UTC | 1h 35m |
| 2026-06-18 | C2317 | - | Jun 18, 13:30 UTC | Jun 18, 16:10 UTC | 2h 40m |
| 2026-06-18 | C2317 | - | Jun 18, 02:15 UTC | Jun 18, 02:45 UTC | 30m |
| 2026-06-18 | C2317 | - | Jun 18, 00:55 UTC | Jun 18, 01:35 UTC | 40m |
| 2026-06-17 | C2317 | - | Jun 17, 20:50 UTC | Jun 17, 23:35 UTC | 2h 45m |
| 2026-06-17 | C2317 | - | Jun 17, 17:05 UTC | Jun 17, 17:40 UTC | 35m |
| 2026-06-17 | C2317 | - | Jun 17, 15:40 UTC | Jun 17, 16:05 UTC | 25m |
| 2026-06-13 | C2317 | - | Jun 13, 14:40 UTC | Jun 13, 15:15 UTC | 35m |
| 2026-06-13 | C2317 | - | Jun 13, 13:10 UTC | Jun 13, 13:50 UTC | 40m |
| 2026-06-12 | C2317 | - | Jun 12, 23:45 UTC | Jun 13, 00:15 UTC | 30m |
| 2026-06-12 | 00000000 | - | Jun 12, 21:55 UTC | Jun 12, 22:20 UTC | 25m |
| 2026-06-12 | C2317 | - | Jun 12, 18:20 UTC | Jun 12, 18:30 UTC | 10m |
| 2026-06-12 | C2317 | - | Jun 12, 13:15 UTC | Jun 12, 13:25 UTC | 10m |
| 2026-06-11 | C2317 | - | Jun 11, 21:55 UTC | Jun 11, 22:15 UTC | 20m |
| 2026-06-11 | C2317 | - | Jun 11, 19:40 UTC | Jun 11, 21:05 UTC | 1h 25m |
| 2026-06-10 | C2317 | - | Jun 10, 23:30 UTC | Jun 11, 01:55 UTC | 2h 25m |
| 2026-06-10 | C2317 | - | Jun 10, 20:45 UTC | Jun 10, 21:25 UTC | 40m |
| 2026-06-10 | C2317 | - | Jun 10, 13:00 UTC | Jun 10, 16:40 UTC | 3h 40m |
| 2026-06-09 | C2317 | - | Jun 9, 22:30 UTC | Jun 10, 02:40 UTC | 4h 10m |
| 2026-06-04 | C2317 | - | Jun 4, 23:50 UTC | Jun 5, 02:05 UTC | 2h 15m |
| 2026-06-02 | C2317 | - | Jun 2, 21:40 UTC | Jun 2, 23:55 UTC | 2h 15m |
| 2026-05-28 | C2317 | - | May 28, 21:20 UTC | May 29, 00:35 UTC | 3h 15m |
| 2026-05-28 | C2317 | - | May 28, 17:30 UTC | May 28, 17:50 UTC | 20m |
| 2026-05-28 | C2317 | - | May 28, 13:35 UTC | May 28, 16:05 UTC | 2h 30m |
| 2026-05-23 | C2317 | - | May 23, 13:25 UTC | May 23, 15:30 UTC | 2h 5m |
| 2026-05-20 | C2317 | - | May 20, 18:45 UTC | May 20, 19:20 UTC | 35m |
| 2026-05-20 | C2317 | - | May 20, 13:45 UTC | May 20, 16:35 UTC | 2h 50m |
| 2026-05-18 | C2317 | - | May 18, 23:25 UTC | May 19, 02:00 UTC | 2h 35m |
| 2026-05-18 | C2301 | - | May 18, 21:40 UTC | May 18, 22:25 UTC | 45m |
| 2026-05-17 | C2317 | - | May 17, 22:35 UTC | May 18, 00:05 UTC | 1h 30m |
| 2026-05-17 | C2317 | - | May 17, 21:15 UTC | May 17, 21:25 UTC | 10m |
| 2026-05-16 | 00000000 | - | May 16, 20:45 UTC | May 16, 21:15 UTC | 30m |
| 2026-05-15 | C2317 | - | May 15, 21:55 UTC | May 16, 00:10 UTC | 2h 15m |
| 2026-05-14 | C2316 | - | May 14, 15:05 UTC | May 14, 16:15 UTC | 1h 10m |
| 2026-04-27 | C2317 | - | Apr 27, 22:15 UTC | Apr 27, 23:15 UTC | 1h 0m |
| 2026-04-27 | C2317 | - | Apr 27, 20:40 UTC | Apr 27, 20:55 UTC | 15m |
| 2026-04-27 | C2317 | - | Apr 27, 05:20 UTC | Apr 27, 06:15 UTC | 55m |
| 2026-04-27 | C2317 | - | Apr 27, 03:35 UTC | Apr 27, 04:00 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 2317 page for operator, model, and routing details .