sensors Mode-S transponder
400E09
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-ECLB · AIRBUS A-340-600
- Hex
- 400E09
- Octal
- 20007011
- Decimal
- 4,197,897
- Country
- GB
- Tail
- G-ECLB
- Type
- A346
- Flights observed
- 27
- Distinct callsigns
- 2
- Country
- GB
- Last broadcast
- 18d ago
Last known position
Country allocation
The ICAO 24-bit address 400E09 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 2 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| URO901 | European Cargo Limited | 18 | 2026-05-15 |
| URO900 | European Cargo Limited | 9 | 2026-05-14 |
Recent flights last 27
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-15 | URO901 | URC → BOH | May 15, 13:00 UTC | May 15, 18:05 UTC | 5h 4m |
| 2026-05-14 | URO901 | URC → BOH | May 14, 16:55 UTC | May 15, 16:15 UTC | 23h 19m |
| 2026-05-14 | URO900 | BOH → URC | May 14, 14:20 UTC | May 15, 14:15 UTC | 23h 55m |
| 2026-05-14 | URO900 | BOH → URC | May 14, 13:10 UTC | May 14, 17:50 UTC | 4h 40m |
| 2026-05-14 | URO901 | URC → BOH | May 14, 02:35 UTC | May 14, 07:55 UTC | 5h 20m |
| 2026-05-11 | URO900 | BOH → URC | May 11, 13:15 UTC | May 11, 17:50 UTC | 4h 36m |
| 2026-05-10 | URO901 | URC → BOH | May 10, 07:30 UTC | May 10, 12:59 UTC | 5h 30m |
| 2026-05-09 | URO901 | URC → BOH | May 9, 16:20 UTC | May 10, 12:59 UTC | 20h 40m |
| 2026-05-09 | URO901 | URC → BOH | May 9, 14:20 UTC | May 10, 12:59 UTC | 22h 40m |
| 2026-05-09 | URO900 | BOH → URC | May 9, 13:15 UTC | May 10, 12:15 UTC | 23h 0m |
| 2026-05-02 | URO901 | URC → BOH | May 2, 07:20 UTC | May 2, 12:35 UTC | 5h 15m |
| 2026-05-01 | URO901 | URC → BOH | May 1, 16:20 UTC | May 2, 12:35 UTC | 20h 15m |
| 2026-05-01 | URO901 | URC → BOH | May 1, 14:20 UTC | May 2, 12:35 UTC | 22h 15m |
| 2026-05-01 | URO901 | URC → BOH | May 1, 13:20 UTC | May 2, 12:15 UTC | 22h 56m |
| 2026-04-30 | URO901 | URC → BOH | Apr 30, 08:20 UTC | Apr 30, 13:40 UTC | 5h 20m |
| 2026-04-29 | URO901 | URC → BOH | Apr 29, 14:20 UTC | Apr 30, 13:40 UTC | 23h 20m |
| 2026-04-29 | URO900 | BOH → URC | Apr 29, 13:15 UTC | Apr 30, 12:15 UTC | 22h 59m |
| 2026-04-19 | URO901 | URC → BOH | Apr 19, 08:00 UTC | Apr 19, 13:15 UTC | 5h 15m |
| 2026-04-18 | URO901 | URC → BOH | Apr 18, 16:20 UTC | Apr 19, 13:15 UTC | 20h 55m |
| 2026-04-18 | URO901 | URC → BOH | Apr 18, 14:20 UTC | Apr 19, 13:15 UTC | 22h 55m |
| 2026-04-18 | URO900 | BOH → URC | Apr 18, 13:15 UTC | Apr 19, 12:15 UTC | 23h 0m |
| 2026-04-15 | URO901 | URC → BOH | Apr 15, 15:05 UTC | Apr 15, 16:40 UTC | 1h 35m |
| 2026-04-15 | URO901 | URC → BOH | Apr 15, 13:50 UTC | Apr 15, 14:55 UTC | 1h 4m |
| 2026-04-15 | URO901 | URC → BOH | Apr 15, 11:20 UTC | Apr 15, 12:45 UTC | 1h 25m |
| 2026-04-14 | URO900 | BOH → URC | Apr 14, 18:55 UTC | Apr 14, 19:35 UTC | 40m |
| 2026-04-14 | URO900 | BOH → URC | Apr 14, 16:50 UTC | Apr 14, 18:45 UTC | 1h 55m |
| 2026-04-14 | URO900 | BOH → URC | Apr 14, 16:35 UTC | Apr 14, 16:45 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-ECLB page for operator, model, and routing details .