sensors Mode-S transponder
4002AD
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to VP-CAY · LEARJET 60
- Hex
- 4002AD
- Octal
- 20001255
- Decimal
- 4,194,989
- Country
- GB
- Tail
- VP-CAY
- Type
- LJ60
- Flights observed
- 44
- Distinct callsigns
- 1
- Country
- GB
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 4002AD 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 |
|---|---|---|---|
| VPCAY | - | 44 | 2026-06-01 |
Recent flights last 44
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | VPCAY | - | Jun 1, 16:45 UTC | Jun 1, 17:40 UTC | 55m |
| 2026-05-28 | VPCAY | - | May 28, 12:00 UTC | May 28, 12:25 UTC | 25m |
| 2026-05-27 | VPCAY | - | May 27, 19:40 UTC | May 27, 20:25 UTC | 45m |
| 2026-05-25 | VPCAY | - | May 25, 22:19 UTC | May 25, 22:44 UTC | 25m |
| 2026-05-25 | VPCAY | BDA → MIA | May 25, 18:10 UTC | May 25, 20:30 UTC | 2h 19m |
| 2026-05-22 | VPCAY | - | May 22, 14:35 UTC | May 22, 16:55 UTC | 2h 20m |
| 2026-05-21 | VPCAY | - | May 21, 22:30 UTC | May 21, 23:00 UTC | 30m |
| 2026-05-21 | VPCAY | - | May 21, 19:05 UTC | May 21, 19:25 UTC | 20m |
| 2026-05-21 | VPCAY | - | May 21, 14:55 UTC | May 21, 15:30 UTC | 35m |
| 2026-05-19 | VPCAY | - | May 19, 18:55 UTC | May 19, 20:15 UTC | 1h 20m |
| 2026-05-19 | VPCAY | - | May 19, 17:20 UTC | May 19, 17:35 UTC | 15m |
| 2026-05-19 | VPCAY | - | May 19, 14:50 UTC | May 19, 16:20 UTC | 1h 30m |
| 2026-05-18 | VPCAY | - | May 18, 18:25 UTC | May 18, 20:55 UTC | 2h 29m |
| 2026-05-18 | VPCAY | - | May 18, 13:15 UTC | May 18, 16:30 UTC | 3h 15m |
| 2026-05-15 | VPCAY | - | May 15, 16:10 UTC | May 15, 16:35 UTC | 25m |
| 2026-05-15 | VPCAY | - | May 15, 14:45 UTC | May 15, 15:15 UTC | 29m |
| 2026-05-14 | VPCAY | - | May 14, 19:20 UTC | May 14, 20:35 UTC | 1h 15m |
| 2026-05-14 | VPCAY | - | May 14, 16:05 UTC | May 14, 18:15 UTC | 2h 10m |
| 2026-05-14 | VPCAY | - | May 14, 00:05 UTC | May 14, 01:00 UTC | 55m |
| 2026-05-13 | VPCAY | - | May 13, 19:05 UTC | May 13, 19:20 UTC | 15m |
| 2026-05-10 | VPCAY | - | May 10, 20:14 UTC | May 10, 20:54 UTC | 40m |
| 2026-05-06 | VPCAY | - | May 6, 19:20 UTC | May 6, 19:45 UTC | 25m |
| 2026-05-06 | VPCAY | - | May 6, 17:20 UTC | May 6, 18:00 UTC | 39m |
| 2026-05-03 | VPCAY | - | May 3, 15:40 UTC | May 3, 18:40 UTC | 3h 0m |
| 2026-05-01 | VPCAY | - | May 1, 22:25 UTC | May 2, 02:45 UTC | 4h 20m |
| 2026-04-30 | VPCAY | - | Apr 30, 23:20 UTC | May 1, 19:10 UTC | 19h 50m |
| 2026-04-30 | VPCAY | - | Apr 30, 23:00 UTC | May 1, 19:10 UTC | 20h 10m |
| 2026-04-30 | VPCAY | - | Apr 30, 19:20 UTC | May 1, 19:10 UTC | 23h 50m |
| 2026-04-30 | VPCAY | - | Apr 30, 18:50 UTC | May 1, 17:15 UTC | 22h 25m |
| 2026-04-26 | VPCAY | - | Apr 26, 18:55 UTC | Apr 26, 19:45 UTC | 50m |
| 2026-04-25 | VPCAY | - | Apr 25, 23:20 UTC | Apr 26, 19:45 UTC | 20h 25m |
| 2026-04-25 | VPCAY | - | Apr 25, 22:55 UTC | Apr 26, 19:45 UTC | 20h 50m |
| 2026-04-25 | VPCAY | - | Apr 25, 20:30 UTC | Apr 26, 19:15 UTC | 22h 45m |
| 2026-04-25 | VPCAY | - | Apr 25, 17:55 UTC | Apr 25, 23:35 UTC | 5h 40m |
| 2026-04-25 | VPCAY | - | Apr 25, 15:45 UTC | Apr 25, 16:25 UTC | 40m |
| 2026-04-22 | VPCAY | - | Apr 22, 16:45 UTC | Apr 22, 17:25 UTC | 40m |
| 2026-04-21 | VPCAY | - | Apr 21, 20:40 UTC | Apr 21, 20:50 UTC | 10m |
| 2026-04-21 | VPCAY | - | Apr 21, 19:35 UTC | Apr 21, 20:05 UTC | 30m |
| 2026-04-16 | VPCAY | - | Apr 16, 17:30 UTC | Apr 16, 18:05 UTC | 35m |
| 2026-04-16 | VPCAY | - | Apr 16, 15:15 UTC | Apr 16, 16:30 UTC | 1h 15m |
| 2026-04-16 | VPCAY | - | Apr 16, 14:25 UTC | Apr 16, 15:10 UTC | 45m |
| 2026-04-15 | VPCAY | - | Apr 15, 21:50 UTC | Apr 15, 22:20 UTC | 30m |
| 2026-04-15 | VPCAY | - | Apr 15, 19:05 UTC | Apr 15, 20:55 UTC | 1h 50m |
| 2026-04-15 | VPCAY | - | Apr 15, 18:35 UTC | Apr 15, 19:00 UTC | 25m |
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-CAY page for operator, model, and routing details .