sensors Mode-S transponder
4D2443
ICAO 24-bit transponder address
Currently assigned to 9H-DEE · EMBRAER ERJ-190-100
- Hex
- 4D2443
- Octal
- 23222103
- Decimal
- 5,055,555
- Tail
- 9H-DEE
- Type
- E190
No current signal · last broadcast 15d ago
- Flights observed
- 58
- Distinct callsigns
- 20
- Country
- -
- Last broadcast
- 15d ago
Last known position
Callsign history 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| AXY404P | - | 3 | 2026-06-21 |
| AXY278A | - | 3 | 2026-07-06 |
| AXY206C | - | 3 | 2026-06-20 |
| AXY678F | - | 2 | 2026-06-27 |
| AXY457S | - | 2 | 2026-07-14 |
| AXY262J | - | 2 | 2026-07-01 |
| AXY2130 | - | 2 | 2026-07-11 |
| AXY161E | - | 2 | 2026-06-30 |
| AXY999K | - | 1 | 2026-07-19 |
| AXY958H | - | 1 | 2026-07-04 |
| AXY950V | - | 1 | 2026-07-03 |
| AXY851H | - | 1 | 2026-07-10 |
| AXY805P | - | 1 | 2026-07-13 |
| AXY793T | - | 1 | 2026-06-12 |
| AXY781R | - | 1 | 2026-07-10 |
| AXY746Y | - | 1 | 2026-07-05 |
| AXY742E | - | 1 | 2026-07-03 |
| AXY740H | - | 1 | 2026-06-29 |
| AXY736Y | - | 1 | 2026-07-16 |
| AXY728T | - | 1 | 2026-07-14 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-19 | AXY240N | KEF → STN | Jul 19, 12:00 UTC | Jul 19, 14:30 UTC | 2h 30m |
| 2026-07-19 | AXY999K | - | Jul 19, 07:55 UTC | Jul 19, 11:00 UTC | 3h 5m |
| 2026-07-18 | AXY710P | MXP → FAB | Jul 18, 14:20 UTC | Jul 18, 16:10 UTC | 1h 50m |
| 2026-07-17 | AXY423G | NCE → MXP | Jul 17, 09:45 UTC | Jul 17, 10:15 UTC | 30m |
| 2026-07-17 | AXY182N | - | Jul 17, 05:50 UTC | Jul 17, 07:55 UTC | 2h 5m |
| 2026-07-16 | AXY736Y | - | Jul 16, 12:00 UTC | Jul 16, 14:10 UTC | 2h 10m |
| 2026-07-15 | AXY709T | ZRH → OLB | Jul 15, 15:10 UTC | Jul 15, 16:20 UTC | 1h 10m |
| 2026-07-14 | AXY457S | - | Jul 14, 18:50 UTC | Jul 15, 13:30 UTC | 18h 39m |
| 2026-07-14 | AXY457S | - | Jul 14, 18:15 UTC | Jul 15, 13:30 UTC | 19h 14m |
| 2026-07-14 | AXY728T | - | Jul 14, 13:35 UTC | Jul 14, 16:50 UTC | 3h 15m |
| 2026-07-13 | AXY805P | - | Jul 13, 11:05 UTC | Jul 13, 12:00 UTC | 55m |
| 2026-07-12 | AXY357Y | - | Jul 12, 15:15 UTC | Jul 12, 16:01 UTC | 45m |
| 2026-07-12 | AXY252G | - | Jul 12, 10:15 UTC | Jul 12, 14:01 UTC | 3h 45m |
| 2026-07-12 | AXY197J | - | Jul 12, 05:20 UTC | Jul 12, 05:30 UTC | 10m |
| 2026-07-11 | AXY2130 | - | Jul 11, 22:40 UTC | Jul 11, 23:15 UTC | 35m |
| 2026-07-11 | AXY2130 | - | Jul 11, 19:50 UTC | Jul 11, 22:35 UTC | 2h 45m |
| 2026-07-10 | AXY781R | - | Jul 10, 16:15 UTC | Jul 10, 17:15 UTC | 1h 0m |
| 2026-07-10 | AXY851H | - | Jul 10, 10:35 UTC | Jul 10, 12:50 UTC | 2h 15m |
| 2026-07-10 | AXY373U | - | Jul 10, 08:15 UTC | Jul 10, 08:55 UTC | 40m |
| 2026-07-09 | AXY715C | - | Jul 9, 15:15 UTC | Jul 9, 17:20 UTC | 2h 5m |
| 2026-07-08 | AXY403R | LIN → CIA | Jul 8, 15:10 UTC | Jul 8, 15:55 UTC | 45m |
| 2026-07-07 | AXY609R | - | Jul 7, 12:50 UTC | Jul 7, 14:10 UTC | 1h 20m |
| 2026-07-07 | AXY286E | NCE → LBG | Jul 7, 10:20 UTC | Jul 7, 11:35 UTC | 1h 15m |
| 2026-07-06 | AXY127R | - | Jul 6, 15:05 UTC | Jul 6, 15:45 UTC | 40m |
| 2026-07-06 | AXY278A | - | Jul 6, 10:15 UTC | Jul 6, 13:45 UTC | 3h 30m |
| 2026-07-05 | AXY278A | - | Jul 5, 14:50 UTC | Jul 6, 13:45 UTC | 22h 55m |
| 2026-07-05 | AXY278A | - | Jul 5, 14:15 UTC | Jul 6, 12:45 UTC | 22h 30m |
| 2026-07-05 | AXY746Y | - | Jul 5, 10:50 UTC | Jul 5, 11:45 UTC | 55m |
| 2026-07-04 | AXY958H | MXP → NCE | Jul 4, 14:20 UTC | Jul 4, 15:10 UTC | 50m |
| 2026-07-04 | AXY255Y | - | Jul 4, 05:10 UTC | Jul 4, 11:40 UTC | 6h 30m |
| 2026-07-03 | AXY950V | ATH → DWC | Jul 3, 18:55 UTC | Jul 3, 23:15 UTC | 4h 20m |
| 2026-07-03 | AXY742E | - | Jul 3, 16:35 UTC | Jul 3, 17:35 UTC | 1h 0m |
| 2026-07-02 | AXY434R | LIN → ISL | Jul 2, 13:50 UTC | Jul 2, 16:05 UTC | 2h 15m |
| 2026-07-02 | AXY686T | - | Jul 2, 09:10 UTC | Jul 2, 12:20 UTC | 3h 10m |
| 2026-07-01 | AXY173V | - | Jul 1, 16:05 UTC | Jul 1, 19:15 UTC | 3h 10m |
| 2026-07-01 | AXY262J | - | Jul 1, 11:10 UTC | Jul 1, 14:45 UTC | 3h 35m |
| 2026-06-30 | AXY262J | - | Jun 30, 16:50 UTC | Jul 1, 14:45 UTC | 21h 55m |
| 2026-06-30 | AXY161E | - | Jun 30, 14:50 UTC | Jul 1, 14:45 UTC | 23h 55m |
| 2026-06-30 | AXY161E | - | Jun 30, 14:15 UTC | Jul 1, 12:45 UTC | 22h 30m |
| 2026-06-29 | AXY740H | MAD → BRU | Jun 29, 11:25 UTC | Jun 29, 13:14 UTC | 1h 50m |
| 2026-06-28 | AXY393P | - | Jun 28, 09:39 UTC | Jun 28, 11:45 UTC | 2h 5m |
| 2026-06-28 | AXY471F | - | Jun 28, 06:49 UTC | Jun 28, 07:40 UTC | 50m |
| 2026-06-27 | AXY678F | - | Jun 27, 18:49 UTC | Jun 27, 23:19 UTC | 4h 30m |
| 2026-06-26 | AXY678F | - | Jun 26, 20:50 UTC | Jun 27, 20:44 UTC | 23h 55m |
| 2026-06-26 | AXY202S | - | Jun 26, 20:34 UTC | Jun 26, 21:59 UTC | 1h 25m |
| 2026-06-24 | AXY349S | - | Jun 24, 09:00 UTC | Jun 24, 11:24 UTC | 2h 25m |
| 2026-06-24 | AXY111R | PRG → MUC | Jun 24, 05:44 UTC | Jun 24, 06:20 UTC | 35m |
| 2026-06-21 | AXY404P | - | Jun 21, 21:49 UTC | Jun 22, 04:30 UTC | 6h 40m |
| 2026-06-21 | AXY404P | - | Jun 21, 19:45 UTC | Jun 21, 19:55 UTC | 10m |
| 2026-06-21 | AXY404P | - | Jun 21, 13:09 UTC | Jun 21, 18:04 UTC | 4h 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 9H-DEE page for operator, model, and routing details .
Mode-S 4D2443 frequently asked
What is Mode-S code 4D2443?
4D2443 is an ICAO 24-bit transponder address. Assigned to 9H-DEE.
Is 4D2443 broadcasting right now?
No active broadcast right now. Last signal was 15d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2443, octal 23222103, decimal 5,055,555.