sensors Mode-S transponder
AF8437
ICAO 24-bit transponder address
Currently assigned to 170754 · BEECH 200 Super King Air
- Hex
- AF8437
- Octal
- 53702067
- Decimal
- 11,502,647
- Tail
- 170754
- Type
- BE20
No current signal · last broadcast 22d ago
- Flights observed
- 105
- Distinct callsigns
- 20
- Country
- -
- Last broadcast
- 22d ago
Last known position
Callsign history 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| STGRY07 | - | 15 | 2026-06-21 |
| BGST416 | - | 10 | 2026-05-07 |
| STGRY61 | - | 8 | 2026-06-15 |
| STGRY43 | - | 8 | 2026-06-25 |
| STGRY64 | - | 6 | 2026-05-06 |
| STGRY30 | - | 6 | 2026-06-24 |
| STGRY17 | - | 6 | 2026-06-05 |
| STGRY02 | - | 6 | 2026-06-15 |
| BGST464 | - | 5 | 2026-04-14 |
| STGRY57 | - | 4 | 2026-06-05 |
| STGRY47 | - | 4 | 2026-05-31 |
| STGRY44 | - | 3 | 2026-04-15 |
| BGST424 | - | 3 | 2026-06-25 |
| BGST360 | - | 3 | 2026-05-18 |
| STGRY56 | - | 2 | 2026-06-02 |
| STGRY50 | - | 2 | 2026-05-01 |
| STGRY40 | - | 2 | 2026-05-05 |
| STGRY26 | - | 2 | 2026-06-23 |
| BGST415 | - | 2 | 2026-04-30 |
| BGST335 | - | 2 | 2026-05-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-25 | BGST424 | - | Jun 25, 10:45 UTC | Jun 25, 13:00 UTC | 2h 15m |
| 2026-06-25 | STGRY43 | - | Jun 25, 01:09 UTC | Jun 25, 02:49 UTC | 1h 40m |
| 2026-06-24 | STGRY43 | - | Jun 24, 22:49 UTC | Jun 24, 23:34 UTC | 45m |
| 2026-06-24 | STGRY43 | - | Jun 24, 21:50 UTC | Jun 24, 22:10 UTC | 20m |
| 2026-06-24 | BGST317 | - | Jun 24, 17:55 UTC | Jun 24, 18:05 UTC | 10m |
| 2026-06-24 | BGST317 | - | Jun 24, 13:50 UTC | Jun 24, 14:55 UTC | 1h 5m |
| 2026-06-24 | STGRY30 | - | Jun 24, 02:20 UTC | Jun 24, 03:15 UTC | 55m |
| 2026-06-23 | STGRY30 | - | Jun 23, 23:05 UTC | Jun 24, 01:04 UTC | 2h 0m |
| 2026-06-23 | STGRY26 | - | Jun 23, 21:05 UTC | Jun 23, 22:34 UTC | 1h 30m |
| 2026-06-23 | STGRY26 | - | Jun 23, 17:44 UTC | Jun 23, 19:10 UTC | 1h 25m |
| 2026-06-22 | BGST424 | - | Jun 22, 19:14 UTC | Jun 22, 20:34 UTC | 1h 20m |
| 2026-06-22 | BGST424 | - | Jun 22, 14:55 UTC | Jun 22, 15:54 UTC | 1h 0m |
| 2026-06-21 | STGRY07 | - | Jun 21, 01:30 UTC | Jun 21, 03:30 UTC | 2h 0m |
| 2026-06-20 | STGRY07 | - | Jun 20, 19:55 UTC | Jun 20, 22:54 UTC | 3h 0m |
| 2026-06-20 | STGRY07 | - | Jun 20, 14:44 UTC | Jun 20, 17:59 UTC | 3h 15m |
| 2026-06-18 | STGRY07 | - | Jun 18, 22:30 UTC | Jun 19, 02:04 UTC | 3h 34m |
| 2026-06-18 | STGRY07 | - | Jun 18, 18:50 UTC | Jun 18, 21:30 UTC | 2h 40m |
| 2026-06-18 | STGRY07 | - | Jun 18, 15:30 UTC | Jun 18, 17:25 UTC | 1h 55m |
| 2026-06-15 | STGRY02 | - | Jun 15, 20:20 UTC | Jun 15, 20:50 UTC | 30m |
| 2026-06-15 | STGRY02 | - | Jun 15, 16:15 UTC | Jun 15, 16:45 UTC | 30m |
| 2026-06-15 | STGRY61 | - | Jun 15, 00:29 UTC | Jun 15, 03:55 UTC | 3h 25m |
| 2026-06-14 | STGRY61 | LGB → SCF | Jun 14, 17:50 UTC | Jun 14, 19:45 UTC | 1h 55m |
| 2026-06-12 | STGRY61 | - | Jun 12, 16:55 UTC | Jun 12, 19:20 UTC | 2h 25m |
| 2026-06-12 | STGRY61 | - | Jun 12, 12:15 UTC | Jun 12, 14:25 UTC | 2h 10m |
| 2026-06-11 | STGRY61 | - | Jun 11, 18:20 UTC | Jun 11, 19:55 UTC | 1h 35m |
| 2026-06-11 | STGRY61 | - | Jun 11, 03:15 UTC | Jun 11, 03:35 UTC | 20m |
| 2026-06-11 | STGRY61 | - | Jun 11, 01:40 UTC | Jun 11, 02:25 UTC | 45m |
| 2026-06-10 | STGRY61 | - | Jun 10, 22:15 UTC | Jun 11, 00:00 UTC | 1h 45m |
| 2026-06-10 | STGRY43 | - | Jun 10, 16:05 UTC | Jun 10, 18:00 UTC | 1h 55m |
| 2026-06-10 | STGRY43 | - | Jun 10, 12:30 UTC | Jun 10, 14:35 UTC | 2h 5m |
| 2026-06-10 | STGRY07 | - | Jun 10, 01:25 UTC | Jun 10, 03:10 UTC | 1h 45m |
| 2026-06-09 | STGRY07 | - | Jun 9, 22:00 UTC | Jun 9, 23:35 UTC | 1h 35m |
| 2026-06-09 | BGST312 | - | Jun 9, 02:35 UTC | Jun 9, 04:20 UTC | 1h 45m |
| 2026-06-08 | BGST312 | - | Jun 8, 22:50 UTC | Jun 8, 23:55 UTC | 1h 5m |
| 2026-06-08 | STGRY02 | - | Jun 8, 17:25 UTC | Jun 8, 19:15 UTC | 1h 50m |
| 2026-06-08 | STGRY02 | - | Jun 8, 13:50 UTC | Jun 8, 15:35 UTC | 1h 45m |
| 2026-06-05 | STGRY17 | - | Jun 5, 22:10 UTC | Jun 5, 22:20 UTC | 10m |
| 2026-06-05 | STGRY17 | - | Jun 5, 20:50 UTC | Jun 5, 21:30 UTC | 40m |
| 2026-06-05 | STGRY17 | - | Jun 5, 17:55 UTC | Jun 5, 18:25 UTC | 30m |
| 2026-06-05 | STGRY57 | - | Jun 5, 01:30 UTC | Jun 5, 02:25 UTC | 55m |
| 2026-06-04 | STGRY57 | - | Jun 4, 21:30 UTC | Jun 4, 23:10 UTC | 1h 40m |
| 2026-06-03 | STGRY07 | - | Jun 3, 00:20 UTC | Jun 3, 02:20 UTC | 2h 0m |
| 2026-06-02 | STGRY07 | - | Jun 2, 21:30 UTC | Jun 2, 23:00 UTC | 1h 30m |
| 2026-06-02 | STGRY56 | - | Jun 2, 17:30 UTC | Jun 2, 18:55 UTC | 1h 25m |
| 2026-06-02 | STGRY56 | - | Jun 2, 14:55 UTC | Jun 2, 16:45 UTC | 1h 50m |
| 2026-05-31 | STGRY47 | - | May 31, 17:45 UTC | May 31, 21:05 UTC | 3h 20m |
| 2026-05-31 | STGRY47 | - | May 31, 12:25 UTC | May 31, 15:15 UTC | 2h 50m |
| 2026-05-29 | STGRY47 | - | May 29, 19:25 UTC | May 29, 20:30 UTC | 1h 5m |
| 2026-05-29 | STGRY47 | - | May 29, 14:35 UTC | May 29, 18:20 UTC | 3h 45m |
| 2026-05-19 | STGRY42 | - | May 19, 00:40 UTC | May 19, 02:35 UTC | 1h 55m |
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 170754 page for operator, model, and routing details .
Mode-S AF8437 frequently asked
What is Mode-S code AF8437?
AF8437 is an ICAO 24-bit transponder address. Assigned to 170754.
Is AF8437 broadcasting right now?
No active broadcast right now. Last signal was 22d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AF8437, octal 53702067, decimal 11,502,647.