sensors Mode-S transponder

407E53

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-SUNE · AIRBUS A-321neo

Hex
407E53
Octal
20077123
Decimal
4,226,643
Country
GB
Tail
G-SUNE
Type
A21N
No current signal · last broadcast 12h ago
Flights observed
14
Distinct callsigns
5
Country
GB
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 407E53.

Country allocation

The ICAO 24-bit address 407E53 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 5 distinct

Callsign Airline Flights Last seen
EXS22RB - 5 2026-04-14
EXS45VK - 4 2026-04-14
EXS8AW - 3 2026-04-13
EXS892 - 1 2026-04-13
EXS4SL - 1 2026-04-12

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 EXS45VK - Apr 14, 10:55 UTCApr 14, 11:05 UTC10m
2026-04-14 EXS22RB - Apr 14, 07:10 UTCApr 14, 08:45 UTC1h 35m
2026-04-14 EXS22RB - Apr 14, 06:25 UTCApr 14, 07:10 UTC45m
2026-04-13 EXS892 - Apr 13, 21:00 UTCApr 13, 23:40 UTC2h 40m
2026-04-13 EXS8AW - Apr 13, 16:15 UTCApr 13, 18:20 UTC2h 5m
2026-04-13 EXS8AW - Apr 13, 15:50 UTCApr 13, 18:20 UTC2h 30m
2026-04-13 EXS8AW - Apr 13, 15:15 UTCApr 13, 16:15 UTC1h 0m
2026-04-13 EXS45VK - Apr 13, 12:20 UTCApr 13, 13:25 UTC1h 5m
2026-04-13 EXS45VK - Apr 13, 11:55 UTCApr 13, 13:25 UTC1h 30m
2026-04-13 EXS45VK - Apr 13, 10:35 UTCApr 13, 12:15 UTC1h 40m
2026-04-13 EXS22RB - Apr 13, 08:20 UTCApr 13, 09:30 UTC1h 10m
2026-04-13 EXS22RB - Apr 13, 07:55 UTCApr 13, 09:30 UTC1h 35m
2026-04-13 EXS22RB - Apr 13, 07:05 UTCApr 13, 08:15 UTC1h 10m
2026-04-12 EXS4SL - Apr 12, 18:30 UTCApr 12, 20:15 UTC1h 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.

Prefer a tail-number view? See the G-SUNE page for operator, model, and routing details .

Mode-S 407E53 frequently asked

What is Mode-S code 407E53?
407E53 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-SUNE.
Where is Mode-S 407E53 registered?
Mode-S code 407E53 is allocated to United Kingdom (GB). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 407E53 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407E53, octal 20077123, decimal 4,226,643.
What flights does 407E53 operate?
Mode-S 407E53 has broadcast 5 distinct callsigns, including EXS22RB, EXS45VK, EXS8AW, EXS892, EXS4SL.