sensors Mode-S transponder
4CC543
ICAO 24-bit transponder address
Currently assigned to TF-NLA · BEECH 200 Super King Air
- Hex
- 4CC543
- Octal
- 23142503
- Decimal
- 5,031,235
- Tail
- TF-NLA
- Type
- BE20
- Flights observed
- 186
- Distinct callsigns
- 20
- Country
- -
- Last broadcast
- 14h ago
Last known position
Callsign history 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| FNA571 | - | 30 | 2026-07-21 |
| FNA570 | - | 29 | 2026-07-21 |
| FNA590 | - | 17 | 2026-05-25 |
| FNA592 | - | 16 | 2026-05-25 |
| FNA591 | - | 15 | 2026-05-19 |
| FNA593 | - | 14 | 2026-05-25 |
| FNA575 | - | 8 | 2026-06-26 |
| FNA574 | - | 8 | 2026-06-26 |
| FNA513 | - | 8 | 2026-06-25 |
| FNA550 | - | 6 | 2026-07-18 |
| FNA514 | - | 6 | 2026-06-25 |
| FNA551 | - | 4 | 2026-07-14 |
| FNA527 | - | 3 | 2026-04-27 |
| FNA557 | - | 2 | 2026-07-20 |
| FNA556 | - | 2 | 2026-07-20 |
| FNA553 | - | 2 | 2026-06-29 |
| FNA507 | - | 2 | 2026-07-16 |
| FNA505 | - | 2 | 2026-07-13 |
| FNA595 | - | 1 | 2026-04-22 |
| FNA594 | - | 1 | 2026-04-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-21 | FNA571 | - | Jul 21, 11:30 UTC | Jul 21, 11:50 UTC | 20m |
| 2026-07-21 | FNA570 | - | Jul 21, 10:15 UTC | Jul 21, 10:40 UTC | 25m |
| 2026-07-20 | FNA558 | - | Jul 20, 18:30 UTC | Jul 20, 18:50 UTC | 20m |
| 2026-07-20 | FNA557 | - | Jul 20, 17:05 UTC | Jul 20, 17:40 UTC | 35m |
| 2026-07-20 | FNA556 | - | Jul 20, 13:05 UTC | Jul 20, 13:15 UTC | 10m |
| 2026-07-20 | FNA571 | - | Jul 20, 11:40 UTC | Jul 20, 11:55 UTC | 15m |
| 2026-07-20 | FNA570 | - | Jul 20, 10:15 UTC | Jul 20, 10:35 UTC | 20m |
| 2026-07-19 | FNA571 | - | Jul 19, 14:15 UTC | Jul 19, 14:40 UTC | 25m |
| 2026-07-19 | FNA571 | - | Jul 19, 13:10 UTC | Jul 19, 13:35 UTC | 25m |
| 2026-07-18 | FNA550 | - | Jul 18, 16:35 UTC | Jul 18, 16:50 UTC | 15m |
| 2026-07-18 | FNA510 | - | Jul 18, 15:15 UTC | Jul 18, 15:40 UTC | 25m |
| 2026-07-16 | FNA507 | - | Jul 16, 07:45 UTC | Jul 16, 08:55 UTC | 1h 10m |
| 2026-07-15 | FNA571 | - | Jul 15, 11:35 UTC | Jul 15, 12:00 UTC | 25m |
| 2026-07-15 | FNA570 | - | Jul 15, 10:15 UTC | Jul 15, 10:35 UTC | 20m |
| 2026-07-14 | FNA551 | - | Jul 14, 17:10 UTC | Jul 14, 17:40 UTC | 30m |
| 2026-07-13 | FNA505 | - | Jul 13, 10:20 UTC | Jul 13, 10:45 UTC | 25m |
| 2026-06-29 | FNA553 | - | Jun 29, 14:44 UTC | Jun 29, 15:04 UTC | 20m |
| 2026-06-29 | FNA552 | - | Jun 29, 12:20 UTC | Jun 29, 12:45 UTC | 25m |
| 2026-06-29 | FNA551 | - | Jun 29, 10:59 UTC | Jun 29, 11:20 UTC | 20m |
| 2026-06-29 | FNA550 | - | Jun 29, 09:00 UTC | Jun 29, 09:25 UTC | 25m |
| 2026-06-26 | FNA575 | - | Jun 26, 13:49 UTC | Jun 26, 13:59 UTC | 10m |
| 2026-06-26 | FNA574 | - | Jun 26, 12:29 UTC | Jun 26, 12:50 UTC | 20m |
| 2026-06-26 | FNA571 | - | Jun 26, 11:24 UTC | Jun 26, 11:40 UTC | 15m |
| 2026-06-26 | FNA570 | - | Jun 26, 10:10 UTC | Jun 26, 10:30 UTC | 20m |
| 2026-06-25 | FNA514 | - | Jun 25, 16:09 UTC | Jun 25, 16:29 UTC | 20m |
| 2026-06-25 | FNA513 | - | Jun 25, 12:40 UTC | Jun 25, 13:00 UTC | 20m |
| 2026-06-25 | FNA571 | - | Jun 25, 11:19 UTC | Jun 25, 11:35 UTC | 15m |
| 2026-06-25 | FNA570 | - | Jun 25, 10:09 UTC | Jun 25, 10:35 UTC | 25m |
| 2026-06-24 | FNA571 | - | Jun 24, 11:05 UTC | Jun 24, 11:29 UTC | 25m |
| 2026-06-24 | FNA570 | - | Jun 24, 09:59 UTC | Jun 24, 10:25 UTC | 25m |
| 2026-06-23 | FNA571 | - | Jun 23, 11:14 UTC | Jun 23, 11:40 UTC | 25m |
| 2026-06-23 | FNA570 | - | Jun 23, 10:04 UTC | Jun 23, 10:29 UTC | 25m |
| 2026-06-19 | FNA575 | - | Jun 19, 13:44 UTC | Jun 19, 13:59 UTC | 15m |
| 2026-06-19 | FNA574 | - | Jun 19, 12:39 UTC | Jun 19, 12:59 UTC | 20m |
| 2026-06-19 | FNA571 | - | Jun 19, 11:30 UTC | Jun 19, 11:45 UTC | 15m |
| 2026-06-19 | FNA570 | - | Jun 19, 10:09 UTC | Jun 19, 10:35 UTC | 25m |
| 2026-06-18 | FNA514 | - | Jun 18, 15:50 UTC | Jun 18, 16:05 UTC | 15m |
| 2026-06-18 | FNA513 | - | Jun 18, 12:30 UTC | Jun 18, 12:55 UTC | 25m |
| 2026-06-18 | FNA571 | - | Jun 18, 11:10 UTC | Jun 18, 11:35 UTC | 25m |
| 2026-06-18 | FNA570 | - | Jun 18, 10:05 UTC | Jun 18, 10:30 UTC | 25m |
| 2026-06-16 | FNA557 | - | Jun 16, 15:09 UTC | Jun 16, 15:30 UTC | 20m |
| 2026-06-16 | FNA556 | - | Jun 16, 10:09 UTC | Jun 16, 10:25 UTC | 15m |
| 2026-06-15 | FNA571 | - | Jun 15, 11:30 UTC | Jun 15, 11:54 UTC | 25m |
| 2026-06-15 | FNA570 | - | Jun 15, 10:24 UTC | Jun 15, 10:50 UTC | 25m |
| 2026-06-11 | FNA514 | - | Jun 11, 16:35 UTC | Jun 11, 16:50 UTC | 15m |
| 2026-06-11 | FNA513 | - | Jun 11, 13:05 UTC | Jun 11, 13:30 UTC | 25m |
| 2026-06-11 | FNA571 | - | Jun 11, 11:15 UTC | Jun 11, 11:40 UTC | 25m |
| 2026-06-11 | FNA570 | - | Jun 11, 10:10 UTC | Jun 11, 10:30 UTC | 20m |
| 2026-06-09 | FNA550 | - | Jun 9, 13:10 UTC | Jun 9, 13:30 UTC | 20m |
| 2026-06-04 | FNA518 | - | Jun 4, 16:50 UTC | Jun 4, 17:40 UTC | 50m |
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 TF-NLA page for operator, model, and routing details .