sensors Mode-S transponder
AF54C4
ICAO 24-bit transponder address
Currently assigned to 170747 · BEECH 200 Super King Air
- Hex
- AF54C4
- Octal
- 53652304
- Decimal
- 11,490,500
- Tail
- 170747
- Type
- BE20
No current signal · last broadcast Jul 26, 21:00 UTC
- Flights observed
- 139
- Distinct callsigns
- 20
- Country
- -
- Last broadcast
- Jul 26, 21:00 UTC
Last known position
Callsign history 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| STGRY47 | - | 14 | 2026-06-15 |
| STGRY31 | - | 14 | 2026-07-20 |
| STGRY07 | - | 12 | 2026-07-23 |
| STGRY50 | - | 11 | 2026-07-13 |
| STGRY64 | - | 10 | 2026-06-05 |
| STGRY62 | - | 7 | 2026-07-26 |
| STGRY26 | - | 7 | 2026-05-15 |
| BGST416 | - | 6 | 2026-07-17 |
| STGRY43 | - | 5 | 2026-07-13 |
| STGRY63 | - | 4 | 2026-06-11 |
| STGRY61 | - | 4 | 2026-04-26 |
| STGRY20 | - | 4 | 2026-07-15 |
| STGRY10 | - | 4 | 2026-07-14 |
| BGST01 | - | 4 | 2026-06-24 |
| STGRY67 | - | 3 | 2026-07-21 |
| STGRY42 | - | 3 | 2026-06-26 |
| STGRY27 | - | 3 | 2026-06-25 |
| BGST346 | - | 3 | 2026-06-01 |
| STGY61Z | - | 2 | 2026-06-04 |
| STGRY60 | - | 2 | 2026-04-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | STGRY62 | MSP → BNW | Jul 26, 18:30 UTC | Jul 26, 21:00 UTC | 2h 30m |
| 2026-07-25 | STGRY62 | - | Jul 25, 01:00 UTC | Jul 25, 03:05 UTC | 2h 5m |
| 2026-07-24 | STGRY62 | - | Jul 24, 21:00 UTC | Jul 24, 23:25 UTC | 2h 25m |
| 2026-07-23 | STGRY07 | - | Jul 23, 14:35 UTC | Jul 23, 17:00 UTC | 2h 25m |
| 2026-07-23 | STGRY07 | - | Jul 23, 13:10 UTC | Jul 23, 13:40 UTC | 30m |
| 2026-07-21 | STGRY07 | - | Jul 21, 22:10 UTC | Jul 21, 23:40 UTC | 1h 30m |
| 2026-07-21 | STGRY07 | - | Jul 21, 16:50 UTC | Jul 21, 19:30 UTC | 2h 40m |
| 2026-07-21 | STGRY67 | - | Jul 21, 13:40 UTC | Jul 21, 15:05 UTC | 1h 25m |
| 2026-07-20 | STGRY62 | - | Jul 20, 23:55 UTC | Jul 21, 01:25 UTC | 1h 30m |
| 2026-07-20 | STGRY62 | - | Jul 20, 20:00 UTC | Jul 20, 21:15 UTC | 1h 15m |
| 2026-07-20 | STGRY31 | - | Jul 20, 18:45 UTC | Jul 20, 19:15 UTC | 30m |
| 2026-07-20 | STGRY31 | - | Jul 20, 14:15 UTC | Jul 20, 15:00 UTC | 45m |
| 2026-07-19 | STGRY31 | - | Jul 19, 21:30 UTC | Jul 19, 22:00 UTC | 30m |
| 2026-07-19 | STGRY31 | - | Jul 19, 20:05 UTC | Jul 19, 20:55 UTC | 50m |
| 2026-07-19 | STGRY31 | - | Jul 19, 16:25 UTC | Jul 19, 17:35 UTC | 1h 10m |
| 2026-07-18 | STGRY31 | - | Jul 18, 19:05 UTC | Jul 18, 21:20 UTC | 2h 15m |
| 2026-07-18 | STGRY31 | - | Jul 18, 16:25 UTC | Jul 18, 17:10 UTC | 45m |
| 2026-07-18 | STGRY31 | - | Jul 18, 15:05 UTC | Jul 18, 15:35 UTC | 30m |
| 2026-07-17 | BGST416 | - | Jul 17, 19:49 UTC | Jul 17, 20:50 UTC | 1h 0m |
| 2026-07-17 | BGST416 | - | Jul 17, 15:44 UTC | Jul 17, 16:29 UTC | 45m |
| 2026-07-17 | STGRY35 | - | Jul 17, 02:50 UTC | Jul 17, 04:20 UTC | 1h 30m |
| 2026-07-16 | STGRY35 | - | Jul 16, 23:35 UTC | Jul 17, 01:05 UTC | 1h 30m |
| 2026-07-15 | STGRY20 | - | Jul 15, 01:10 UTC | Jul 15, 02:05 UTC | 55m |
| 2026-07-14 | STGRY20 | - | Jul 14, 21:20 UTC | Jul 14, 22:35 UTC | 1h 15m |
| 2026-07-14 | STGRY10 | - | Jul 14, 18:05 UTC | Jul 14, 18:50 UTC | 45m |
| 2026-07-14 | STGRY10 | - | Jul 14, 16:15 UTC | Jul 14, 17:25 UTC | 1h 10m |
| 2026-07-14 | STGRY62 | - | Jul 14, 03:50 UTC | Jul 14, 04:25 UTC | 35m |
| 2026-07-13 | STGRY62 | - | Jul 13, 23:35 UTC | Jul 14, 00:55 UTC | 1h 20m |
| 2026-07-13 | STGRY43 | - | Jul 13, 21:50 UTC | Jul 13, 23:05 UTC | 1h 15m |
| 2026-07-13 | STGRY43 | - | Jul 13, 17:50 UTC | Jul 13, 20:00 UTC | 2h 10m |
| 2026-07-13 | STGRY50 | - | Jul 13, 14:10 UTC | Jul 13, 14:45 UTC | 35m |
| 2026-07-13 | STGRY50 | - | Jul 13, 12:50 UTC | Jul 13, 13:25 UTC | 35m |
| 2026-07-11 | STGRY57 | - | Jul 11, 21:30 UTC | Jul 11, 22:45 UTC | 1h 15m |
| 2026-07-11 | STGRY57 | - | Jul 11, 18:35 UTC | Jul 11, 20:00 UTC | 1h 25m |
| 2026-07-11 | STGRY53 | - | Jul 11, 17:25 UTC | Jul 11, 18:05 UTC | 40m |
| 2026-07-11 | STGRY53 | - | Jul 11, 13:00 UTC | Jul 11, 14:50 UTC | 1h 50m |
| 2026-07-01 | BGST416 | - | Jul 1, 21:55 UTC | Jul 1, 22:55 UTC | 1h 0m |
| 2026-07-01 | BGST416 | - | Jul 1, 18:10 UTC | Jul 1, 19:50 UTC | 1h 40m |
| 2026-06-28 | STGRY67 | PNS → NGP | Jun 28, 18:10 UTC | Jun 28, 21:04 UTC | 2h 55m |
| 2026-06-28 | STGRY67 | - | Jun 28, 13:25 UTC | Jun 28, 16:00 UTC | 2h 35m |
| 2026-06-26 | STGRY42 | - | Jun 26, 15:10 UTC | Jun 26, 17:15 UTC | 2h 5m |
| 2026-06-25 | STGRY27 | - | Jun 25, 20:05 UTC | Jun 25, 20:39 UTC | 35m |
| 2026-06-25 | STGRY27 | - | Jun 25, 18:39 UTC | Jun 25, 19:09 UTC | 30m |
| 2026-06-25 | STGRY27 | - | Jun 25, 15:24 UTC | Jun 25, 16:59 UTC | 1h 35m |
| 2026-06-25 | STGRY30 | - | Jun 25, 01:40 UTC | Jun 25, 02:59 UTC | 1h 20m |
| 2026-06-24 | STGRY30 | - | Jun 24, 23:45 UTC | Jun 25, 00:35 UTC | 50m |
| 2026-06-24 | BGST01 | - | Jun 24, 18:55 UTC | Jun 24, 20:54 UTC | 2h 0m |
| 2026-06-24 | BGST01 | - | Jun 24, 17:20 UTC | Jun 24, 17:50 UTC | 30m |
| 2026-06-24 | BGST01 | - | Jun 24, 14:55 UTC | Jun 24, 15:14 UTC | 20m |
| 2026-06-24 | BGST01 | - | Jun 24, 12:04 UTC | Jun 24, 14:09 UTC | 2h 5m |
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 170747 page for operator, model, and routing details .
Mode-S AF54C4 frequently asked
What is Mode-S code AF54C4?
AF54C4 is an ICAO 24-bit transponder address. Assigned to 170747.
Is AF54C4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AF54C4, octal 53652304, decimal 11,490,500.