sensors Mode-S transponder
400215
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to VP-CMS · GULFSTREAM 5
- Hex
- 400215
- Octal
- 20001025
- Decimal
- 4,194,837
- Country
- GB
- Tail
- VP-CMS
- Type
- GLF5
- Flights observed
- 42
- Distinct callsigns
- 1
- Country
- GB
- Last broadcast
- 5h ago
Last known position
Country allocation
The ICAO 24-bit address 400215 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 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| VPCMS | - | 42 | 2026-07-17 |
Recent flights last 42
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | VPCMS | - | Jul 17, 20:15 UTC | Jul 17, 21:44 UTC | 1h 30m |
| 2026-07-17 | VPCMS | - | Jul 17, 16:29 UTC | Jul 17, 18:50 UTC | 2h 20m |
| 2026-07-17 | VPCMS | - | Jul 17, 14:20 UTC | Jul 17, 15:10 UTC | 50m |
| 2026-07-16 | VPCMS | - | Jul 16, 19:14 UTC | Jul 16, 22:25 UTC | 3h 10m |
| 2026-07-16 | VPCMS | - | Jul 16, 17:14 UTC | Jul 16, 18:34 UTC | 1h 20m |
| 2026-07-16 | VPCMS | - | Jul 16, 14:20 UTC | Jul 16, 15:45 UTC | 1h 25m |
| 2026-07-14 | VPCMS | - | Jul 14, 14:15 UTC | Jul 15, 08:50 UTC | 18h 34m |
| 2026-07-14 | VPCMS | - | Jul 14, 06:45 UTC | Jul 14, 12:10 UTC | 5h 25m |
| 2026-07-12 | VPCMS | - | Jul 12, 04:01 UTC | Jul 12, 15:50 UTC | 11h 50m |
| 2026-07-09 | VPCMS | - | Jul 9, 04:25 UTC | Jul 9, 12:50 UTC | 8h 25m |
| 2026-07-08 | VPCMS | - | Jul 8, 08:35 UTC | Jul 8, 14:20 UTC | 5h 45m |
| 2026-07-02 | VPCMS | - | Jul 2, 07:25 UTC | Jul 2, 16:30 UTC | 9h 5m |
| 2026-06-30 | VPCMS | - | Jun 30, 20:25 UTC | Jun 30, 20:50 UTC | 25m |
| 2026-06-29 | VPCMS | - | Jun 29, 04:34 UTC | Jun 29, 04:55 UTC | 20m |
| 2026-06-28 | VPCMS | - | Jun 28, 10:15 UTC | Jun 28, 17:00 UTC | 6h 45m |
| 2026-06-23 | VPCMS | AMM → DWC | Jun 23, 09:45 UTC | Jun 23, 15:30 UTC | 5h 45m |
| 2026-06-18 | VPCMS | ATH → AMM | Jun 18, 11:25 UTC | Jun 18, 13:15 UTC | 1h 50m |
| 2026-06-18 | VPCMS | - | Jun 18, 03:45 UTC | Jun 18, 06:00 UTC | 2h 15m |
| 2026-06-16 | VPCMS | - | Jun 16, 09:00 UTC | Jun 16, 18:29 UTC | 9h 30m |
| 2026-06-14 | VPCMS | - | Jun 14, 10:35 UTC | Jun 14, 11:35 UTC | 1h 0m |
| 2026-06-14 | VPCMS | - | Jun 14, 07:25 UTC | Jun 14, 08:25 UTC | 1h 0m |
| 2026-06-10 | VPCMS | - | Jun 10, 04:10 UTC | Jun 10, 14:45 UTC | 10h 35m |
| 2026-06-06 | VPCMS | - | Jun 6, 13:05 UTC | Jun 6, 15:34 UTC | 2h 30m |
| 2026-06-05 | VPCMS | - | Jun 5, 19:25 UTC | Jun 5, 21:55 UTC | 2h 30m |
| 2026-06-04 | VPCMS | - | Jun 4, 14:35 UTC | Jun 4, 16:40 UTC | 2h 5m |
| 2026-06-04 | VPCMS | - | Jun 4, 05:30 UTC | Jun 4, 12:45 UTC | 7h 15m |
| 2026-05-29 | VPCMS | - | May 29, 15:45 UTC | May 30, 05:05 UTC | 13h 20m |
| 2026-05-27 | VPCMS | - | May 27, 14:50 UTC | May 27, 15:10 UTC | 20m |
| 2026-05-21 | VPCMS | - | May 21, 05:25 UTC | May 21, 05:35 UTC | 10m |
| 2026-05-19 | VPCMS | - | May 19, 21:15 UTC | May 19, 21:30 UTC | 15m |
| 2026-05-18 | VPCMS | - | May 18, 04:05 UTC | May 18, 04:25 UTC | 20m |
| 2026-05-13 | VPCMS | - | May 13, 03:15 UTC | May 13, 15:30 UTC | 12h 15m |
| 2026-05-07 | VPCMS | - | May 7, 06:40 UTC | May 7, 06:55 UTC | 15m |
| 2026-05-02 | VPCMS | - | May 2, 04:15 UTC | May 2, 18:55 UTC | 14h 40m |
| 2026-04-27 | VPCMS | AMM → AMM | Apr 27, 20:15 UTC | Apr 27, 20:25 UTC | 10m |
| 2026-04-26 | VPCMS | - | Apr 26, 04:20 UTC | Apr 26, 04:35 UTC | 15m |
| 2026-04-20 | VPCMS | - | Apr 20, 04:20 UTC | Apr 20, 04:35 UTC | 15m |
| 2026-04-17 | VPCMS | - | Apr 17, 17:35 UTC | Apr 17, 18:40 UTC | 1h 5m |
| 2026-04-17 | VPCMS | - | Apr 17, 16:25 UTC | Apr 17, 17:15 UTC | 50m |
| 2026-04-17 | VPCMS | - | Apr 17, 05:20 UTC | Apr 17, 05:45 UTC | 25m |
| 2026-04-17 | VPCMS | - | Apr 17, 04:15 UTC | Apr 17, 05:15 UTC | 1h 1m |
| 2026-04-12 | VPCMS | - | Apr 12, 17:15 UTC | Apr 12, 17:25 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 VP-CMS page for operator, model, and routing details .