sensors Mode-S transponder
40668D
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-BKFG · Thunder & Colt AX.3 MAX.i Sky Chariot
- Hex
- 40668D
- Octal
- 20063215
- Decimal
- 4,220,557
- Country
- GB
- Tail
- G-BKFG
- Type
- BALL
- Flights observed
- 15
- Distinct callsigns
- 11
- Country
- GB
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 40668D 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 11 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| EZY96TY | easyJet | 1 | 2026-06-18 |
| EZY94WD | - | 1 | 2026-06-19 |
| EZY89DE | easyJet | 1 | 2026-06-12 |
| EZY87XA | easyJet | 1 | 2026-07-19 |
| EZY86YE | - | 1 | 2026-06-01 |
| EZY81GZ | - | 1 | 2026-06-21 |
| EZY64CA | - | 1 | 2026-06-27 |
| EZY53JD | easyJet | 1 | 2026-06-04 |
| EZY41UF | easyJet | 1 | 2026-06-05 |
| EZY32GP | easyJet | 1 | 2026-06-03 |
| EZY101E | - | 1 | 2026-07-14 |
Recent flights last 15
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-19 | EZY87XA | BRS → KRK | Jul 19, 19:15 UTC | Jul 19, 19:30 UTC | 15m |
| 2026-07-14 | EZY101E | - | Jul 14, 18:00 UTC | Jul 14, 18:10 UTC | 10m |
| 2026-07-09 | - | - | Jul 9, 22:35 UTC | Jul 9, 22:45 UTC | 10m |
| 2026-06-29 | - | - | Jun 29, 16:44 UTC | Jun 30, 05:50 UTC | 13h 6m |
| 2026-06-27 | EZY64CA | - | Jun 27, 17:25 UTC | Jun 27, 17:34 UTC | 10m |
| 2026-06-21 | EZY81GZ | - | Jun 21, 13:34 UTC | Jun 21, 16:14 UTC | 2h 40m |
| 2026-06-19 | EZY94WD | - | Jun 19, 05:14 UTC | Jun 20, 00:24 UTC | 19h 10m |
| 2026-06-18 | EZY96TY | GLA → SPU | Jun 18, 17:15 UTC | Jun 19, 05:14 UTC | 11h 59m |
| 2026-06-14 | - | - | Jun 14, 18:50 UTC | Jun 14, 23:05 UTC | 4h 15m |
| 2026-06-12 | EZY89DE | ALC → MAN | Jun 12, 23:50 UTC | Jun 13, 00:00 UTC | 10m |
| 2026-06-05 | EZY41UF | MAN → ALC | Jun 5, 19:00 UTC | Jun 6, 00:10 UTC | 5h 10m |
| 2026-06-04 | EZY53JD | MAN → NBE | Jun 4, 06:20 UTC | Jun 4, 06:30 UTC | 10m |
| 2026-06-03 | EZY32GP | TRN → LGW | Jun 3, 23:55 UTC | Jun 4, 00:05 UTC | 10m |
| 2026-06-01 | EZY86YE | - | Jun 1, 06:20 UTC | Jun 1, 18:20 UTC | 12h 0m |
| 2026-04-27 | - | - | Apr 27, 07:00 UTC | Apr 27, 13:35 UTC | 6h 35m |
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 G-BKFG page for operator, model, and routing details .