sensors Mode-S transponder
4065F3
ICAO 24-bit transponder address · allocated to United Kingdom
- Hex
- 4065F3
- Octal
- 20062763
- Decimal
- 4,220,403
- Country
- GB
- Flights observed
- 23
- Distinct callsigns
- 17
- Country
- GB
- Last broadcast
- 10d ago
Last known position
Country allocation
The ICAO 24-bit address 4065F3 falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.
Callsign history 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| TOM50G | TUI Airways | 2 | 2026-06-27 |
| TOM95Y | TUI Airways | 1 | 2026-06-20 |
| TOM8KT | - | 1 | 2026-04-29 |
| TOM8FG | - | 1 | 2026-05-07 |
| TOM89K | TUI Airways | 1 | 2026-05-30 |
| TOM6LX | TUI Airways | 1 | 2026-07-18 |
| TOM5TH | - | 1 | 2026-07-14 |
| TOM5DV | TUI Airways | 1 | 2026-06-04 |
| TOM5BW | - | 1 | 2026-05-01 |
| TOM59A | TUI Airways | 1 | 2026-07-04 |
| TOM50L | TUI Airways | 1 | 2026-07-17 |
| TOM4GY | TUI Airways | 1 | 2026-05-02 |
| TOM44K | - | 1 | 2026-06-15 |
| TOM3AT | TUI Airways | 1 | 2026-07-21 |
| TOM31G | TUI Airways | 1 | 2026-07-20 |
| TOM2HX | TUI Airways | 1 | 2026-06-02 |
| TOM1GM | TUI Airways | 1 | 2026-06-06 |
Recent flights last 23
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-21 | TOM3AT | KGS → KGS | Jul 21, 05:55 UTC | Jul 21, 23:25 UTC | 17h 30m |
| 2026-07-20 | TOM31G | MAN → JSI | Jul 20, 07:05 UTC | Jul 21, 05:55 UTC | 22h 50m |
| 2026-07-18 | TOM6LX | MAN → CHQ | Jul 18, 06:10 UTC | Jul 18, 22:30 UTC | 16h 20m |
| 2026-07-17 | TOM50L | SMI → LGW | Jul 17, 18:10 UTC | Jul 18, 06:15 UTC | 12h 6m |
| 2026-07-14 | TOM5TH | - | Jul 14, 03:25 UTC | Jul 14, 03:35 UTC | 10m |
| 2026-07-13 | - | - | Jul 13, 13:35 UTC | Jul 13, 13:45 UTC | 10m |
| 2026-07-06 | - | - | Jul 6, 10:55 UTC | Jul 6, 13:20 UTC | 2h 25m |
| 2026-07-04 | TOM59A | VRN → LGW | Jul 4, 03:05 UTC | Jul 4, 21:00 UTC | 17h 55m |
| 2026-06-28 | - | - | Jun 28, 07:40 UTC | Jun 28, 07:50 UTC | 10m |
| 2026-06-27 | TOM50G | BHX → PFO | Jun 27, 22:25 UTC | Jun 27, 22:35 UTC | 10m |
| 2026-06-27 | TOM50G | BHX → PFO | Jun 27, 00:39 UTC | Jun 27, 22:35 UTC | 21h 55m |
| 2026-06-25 | - | - | Jun 25, 05:55 UTC | Jun 25, 12:40 UTC | 6h 45m |
| 2026-06-20 | TOM95Y | NCL → LCA | Jun 20, 05:49 UTC | Jun 20, 10:20 UTC | 4h 30m |
| 2026-06-15 | TOM44K | - | Jun 15, 14:20 UTC | Jun 15, 14:30 UTC | 10m |
| 2026-06-06 | TOM1GM | MAN → DBV | Jun 6, 13:44 UTC | Jun 7, 06:00 UTC | 16h 15m |
| 2026-06-04 | TOM5DV | BFS → CFU | Jun 4, 06:35 UTC | Jun 5, 02:20 UTC | 19h 45m |
| 2026-06-03 | - | - | Jun 3, 23:25 UTC | Jun 3, 23:35 UTC | 10m |
| 2026-06-02 | TOM2HX | CWL → MAN | Jun 2, 07:05 UTC | Jun 2, 07:20 UTC | 15m |
| 2026-05-30 | TOM89K | BRS → VRN | May 30, 05:50 UTC | May 30, 10:35 UTC | 4h 45m |
| 2026-05-07 | TOM8FG | - | May 7, 17:00 UTC | May 7, 17:10 UTC | 10m |
| 2026-05-02 | TOM4GY | GLA → TRN | May 2, 13:10 UTC | May 2, 21:00 UTC | 7h 50m |
| 2026-05-01 | TOM5BW | - | May 1, 12:30 UTC | May 1, 12:40 UTC | 10m |
| 2026-04-29 | TOM8KT | - | Apr 29, 18:50 UTC | Apr 29, 19:00 UTC | 10m |
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.