sensors Mode-S transponder
40617F
ICAO 24-bit transponder address · allocated to United Kingdom
- Hex
- 40617F
- Octal
- 20060577
- Decimal
- 4,219,263
- Country
- GB
- Flights observed
- 17
- Distinct callsigns
- 12
- Country
- GB
- Last broadcast
- 4d ago
Last known position
Country allocation
The ICAO 24-bit address 40617F 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 12 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| EXS38N | Jet2.com | 2 | 2026-06-05 |
| EXS187 | Jet2.com | 2 | 2026-05-10 |
| EXS92SG | Jet2.com | 1 | 2026-06-02 |
| EXS8ZQ | Jet2.com | 1 | 2026-05-10 |
| EXS82P | Jet2.com | 1 | 2026-05-02 |
| EXS82HN | Jet2.com | 1 | 2026-05-07 |
| EXS75HB | Jet2.com | 1 | 2026-05-14 |
| EXS2KC | Jet2.com | 1 | 2026-05-25 |
| EXS29V | Jet2.com | 1 | 2026-05-30 |
| EXS1C | Jet2.com | 1 | 2026-05-31 |
| EXS17MT | Jet2.com | 1 | 2026-05-24 |
| EXS145 | Jet2.com | 1 | 2026-05-16 |
Recent flights last 17
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-19 | - | - | Jun 19, 21:14 UTC | Jun 19, 21:24 UTC | 10m |
| 2026-06-07 | - | - | Jun 7, 01:55 UTC | Jun 7, 02:04 UTC | 10m |
| 2026-06-05 | EXS38N | MAN → TIV | Jun 5, 14:55 UTC | Jun 5, 15:05 UTC | 10m |
| 2026-06-04 | EXS38N | MAN → TIV | Jun 4, 15:55 UTC | Jun 5, 15:05 UTC | 23h 10m |
| 2026-06-02 | EXS92SG | BHX → SPU | Jun 2, 13:45 UTC | Jun 3, 05:45 UTC | 16h 0m |
| 2026-05-31 | EXS1C | MAN → CFU | May 31, 00:20 UTC | May 31, 00:30 UTC | 10m |
| 2026-05-30 | EXS29V | KGS → BRS | May 30, 06:05 UTC | May 30, 17:15 UTC | 11h 10m |
| 2026-05-25 | EXS2KC | DBV → MAN | May 25, 08:10 UTC | May 26, 07:34 UTC | 23h 24m |
| 2026-05-24 | EXS17MT | LGW → SOF | May 24, 23:35 UTC | May 25, 08:15 UTC | 8h 40m |
| 2026-05-21 | - | - | May 21, 14:10 UTC | May 22, 07:35 UTC | 17h 25m |
| 2026-05-16 | EXS145 | GLA → MAH | May 16, 07:01 UTC | May 16, 07:11 UTC | 10m |
| 2026-05-14 | EXS75HB | GLA → KRK | May 14, 06:45 UTC | May 14, 16:50 UTC | 10h 5m |
| 2026-05-10 | EXS8ZQ | REU → GLA | May 10, 14:09 UTC | May 11, 11:35 UTC | 21h 25m |
| 2026-05-10 | EXS187 | GLA → NAP | May 10, 08:15 UTC | May 10, 14:09 UTC | 5h 55m |
| 2026-05-09 | EXS187 | GLA → NAP | May 9, 17:35 UTC | May 10, 14:09 UTC | 20h 35m |
| 2026-05-07 | EXS82HN | GLA → BJV | May 7, 16:40 UTC | May 7, 16:50 UTC | 10m |
| 2026-05-02 | EXS82P | GLA → TFS | May 2, 16:30 UTC | May 2, 21:15 UTC | 4h 45m |
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.