sensors Mode-S transponder
4080CF
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-WEAH · BOEING 737 MAX 8
- Hex
- 4080CF
- Octal
- 20100317
- Decimal
- 4,227,279
- Country
- GB
- Tail
- G-WEAH
- Type
- B38M
- Flights observed
- 22
- Distinct callsigns
- 9
- Country
- GB
- Last broadcast
- Apr 26, 18:55 UTC
Last known position
Country allocation
The ICAO 24-bit address 4080CF 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 9 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| OMS437 | Omskavia Airline | 6 | 2026-04-20 |
| OMS438 | Omskavia Airline | 4 | 2026-04-18 |
| OMS315 | Omskavia Airline | 2 | 2026-04-16 |
| OMS286 | Omskavia Airline | 2 | 2026-04-22 |
| OMS274 | - | 2 | 2026-04-14 |
| OMS273 | Omskavia Airline | 2 | 2026-04-24 |
| OMS272 | Omskavia Airline | 2 | 2026-04-23 |
| SYG954 | - | 1 | 2026-04-26 |
| OMS316 | - | 1 | 2026-04-16 |
Recent flights last 22
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-04-26 | SYG954 | - | Apr 26, 11:40 UTC | Apr 26, 18:55 UTC | 7h 15m |
| 2026-04-24 | OMS273 | MCT → MED | Apr 24, 20:35 UTC | Apr 25, 13:20 UTC | 16h 45m |
| 2026-04-23 | OMS272 | MED → MCT | Apr 23, 20:55 UTC | Apr 24, 12:00 UTC | 15h 5m |
| 2026-04-22 | OMS286 | JED → MCT | Apr 22, 23:55 UTC | Apr 23, 16:40 UTC | 16h 45m |
| 2026-04-22 | OMS286 | JED → MCT | Apr 22, 20:40 UTC | Apr 23, 16:40 UTC | 20h 0m |
| 2026-04-20 | OMS437 | MCT → CMB | Apr 20, 21:55 UTC | Apr 21, 13:10 UTC | 15h 15m |
| 2026-04-19 | OMS437 | MCT → CMB | Apr 19, 23:50 UTC | Apr 20, 22:55 UTC | 23h 5m |
| 2026-04-19 | OMS437 | MCT → CMB | Apr 19, 21:00 UTC | Apr 19, 21:45 UTC | 45m |
| 2026-04-19 | OMS272 | MED → MCT | Apr 19, 06:05 UTC | Apr 19, 12:30 UTC | 6h 25m |
| 2026-04-18 | OMS438 | CMB → MCT | Apr 18, 00:25 UTC | Apr 18, 01:10 UTC | 45m |
| 2026-04-17 | OMS438 | CMB → MCT | Apr 17, 21:50 UTC | Apr 18, 17:40 UTC | 19h 50m |
| 2026-04-17 | OMS437 | MCT → CMB | Apr 17, 21:15 UTC | Apr 18, 17:40 UTC | 20h 25m |
| 2026-04-16 | OMS316 | - | Apr 16, 18:00 UTC | Apr 16, 19:05 UTC | 1h 5m |
| 2026-04-16 | OMS315 | MCT → SPX | Apr 16, 11:09 UTC | Apr 16, 11:29 UTC | 20m |
| 2026-04-16 | OMS315 | MCT → SPX | Apr 16, 10:29 UTC | Apr 16, 11:04 UTC | 35m |
| 2026-04-16 | OMS438 | CMB → MCT | Apr 16, 00:15 UTC | Apr 16, 01:05 UTC | 50m |
| 2026-04-15 | OMS437 | MCT → CMB | Apr 15, 21:10 UTC | Apr 15, 22:05 UTC | 55m |
| 2026-04-14 | OMS274 | - | Apr 14, 12:50 UTC | Apr 14, 13:25 UTC | 35m |
| 2026-04-14 | OMS274 | - | Apr 14, 12:30 UTC | Apr 14, 12:45 UTC | 15m |
| 2026-04-14 | OMS273 | - | Apr 14, 07:15 UTC | Apr 14, 08:15 UTC | 1h 0m |
| 2026-04-13 | OMS437 | - | Apr 13, 21:15 UTC | Apr 13, 22:10 UTC | 55m |
| 2026-04-13 | OMS438 | CMB → MCT | Apr 13, 00:20 UTC | Apr 13, 01:10 UTC | 50m |
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-WEAH page for operator, model, and routing details .