sensors Mode-S transponder
40656B
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-CGTU · P&M Aviation Quik / Quantum
- Hex
- 40656B
- Octal
- 20062553
- Decimal
- 4,220,267
- Country
- GB
- Tail
- G-CGTU
- Type
- ULAC
- Flights observed
- 15
- Distinct callsigns
- 10
- Country
- GB
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 40656B 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 10 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| EZY89DE | easyJet | 1 | 2026-05-01 |
| EZY82EB | easyJet | 1 | 2026-05-09 |
| EZY68YJ | - | 1 | 2026-05-20 |
| EZY54GE | - | 1 | 2026-06-22 |
| EZY47HB | easyJet | 1 | 2026-06-15 |
| EZY36RW | easyJet | 1 | 2026-05-22 |
| EZY32CN | easyJet | 1 | 2026-05-29 |
| EZY21QW | easyJet | 1 | 2026-05-27 |
| EZY21PD | - | 1 | 2026-06-18 |
| EZY18AP | - | 1 | 2026-05-04 |
Recent flights last 15
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-22 | EZY54GE | - | Jun 22, 14:55 UTC | Jun 22, 15:10 UTC | 15m |
| 2026-06-18 | EZY21PD | - | Jun 18, 21:40 UTC | Jun 18, 21:55 UTC | 15m |
| 2026-06-15 | EZY47HB | CPH → BRS | Jun 15, 21:14 UTC | Jun 15, 21:25 UTC | 10m |
| 2026-05-29 | EZY32CN | LTN → ACE | May 29, 06:45 UTC | May 29, 07:00 UTC | 15m |
| 2026-05-27 | EZY21QW | LGW → CHQ | May 27, 07:10 UTC | May 27, 07:20 UTC | 10m |
| 2026-05-22 | EZY36RW | MAN → CDG | May 22, 19:15 UTC | May 23, 17:45 UTC | 22h 29m |
| 2026-05-22 | - | - | May 22, 06:00 UTC | May 22, 17:15 UTC | 11h 15m |
| 2026-05-20 | EZY68YJ | - | May 20, 01:00 UTC | May 20, 17:15 UTC | 16h 16m |
| 2026-05-18 | - | - | May 18, 18:05 UTC | May 18, 22:40 UTC | 4h 34m |
| 2026-05-16 | - | - | May 16, 16:55 UTC | May 17, 06:35 UTC | 13h 40m |
| 2026-05-09 | EZY82EB | MAN → DLM | May 9, 16:00 UTC | May 10, 00:39 UTC | 8h 40m |
| 2026-05-04 | EZY18AP | - | May 4, 17:10 UTC | May 5, 06:00 UTC | 12h 51m |
| 2026-05-01 | EZY89DE | ALC → MAN | May 1, 19:10 UTC | May 2, 00:10 UTC | 5h 0m |
| 2026-04-28 | - | - | Apr 28, 05:30 UTC | Apr 28, 10:45 UTC | 5h 15m |
| 2026-04-27 | - | - | Apr 27, 06:35 UTC | Apr 27, 06:45 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.
Prefer a tail-number view? See the G-CGTU page for operator, model, and routing details .