Apparatus

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sensors Mode-S transponder

406723

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-LBAC · EVEKTRO EV-97 EuroStar

Hex
406723
Octal
20063443
Decimal
4,220,707
Country
GB
Tail
G-LBAC
Type
EV97
No current signal · last broadcast 8h ago
Flights observed
74
Distinct callsigns
4
Country
GB
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 406723.

Country allocation

The ICAO 24-bit address 406723 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 4 distinct

Callsign Airline Flights Last seen
GLBAC - 64 2026-07-22
DHK842 - 6 2026-07-01
DHK852 - 1 2026-07-10
DHK4AW - 1 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 GLBAC - Jul 22, 13:15 UTCJul 22, 14:30 UTC1h 15m
2026-07-22 GLBAC - Jul 22, 11:10 UTCJul 22, 11:25 UTC15m
2026-07-21 GLBAC - Jul 21, 14:00 UTCJul 21, 14:50 UTC50m
2026-07-21 GLBAC - Jul 21, 12:05 UTCJul 21, 12:50 UTC45m
2026-07-17 GLBAC - Jul 17, 17:35 UTCJul 17, 18:00 UTC25m
2026-07-17 GLBAC - Jul 17, 12:30 UTCJul 17, 13:10 UTC40m
2026-07-17 GLBAC - Jul 17, 10:40 UTCJul 17, 11:20 UTC40m
2026-07-11 GLBAC - Jul 11, 15:30 UTCJul 11, 17:30 UTC2h 0m
2026-07-10 GLBAC - Jul 10, 09:30 UTCJul 10, 10:45 UTC1h 15m
2026-07-10 DHK852 - Jul 10, 03:15 UTCJul 10, 03:25 UTC10m
2026-07-09 GLBAC - Jul 9, 15:10 UTCJul 9, 16:05 UTC55m
2026-07-09 GLBAC - Jul 9, 12:10 UTCJul 9, 13:25 UTC1h 15m
2026-07-09 GLBAC - Jul 9, 10:10 UTCJul 9, 10:40 UTC30m
2026-07-08 GLBAC - Jul 8, 14:20 UTCJul 8, 14:55 UTC35m
2026-07-08 GLBAC - Jul 8, 09:15 UTCJul 8, 11:10 UTC1h 55m
2026-07-07 GLBAC - Jul 7, 14:05 UTCJul 7, 15:30 UTC1h 25m
2026-07-07 GLBAC - Jul 7, 11:25 UTCJul 7, 12:15 UTC50m
2026-07-07 GLBAC - Jul 7, 07:25 UTCJul 7, 09:10 UTC1h 45m
2026-07-06 GLBAC - Jul 6, 08:45 UTCJul 6, 09:00 UTC15m
2026-07-05 GLBAC - Jul 5, 16:15 UTCJul 5, 16:55 UTC40m
2026-07-05 GLBAC - Jul 5, 12:25 UTCJul 5, 14:00 UTC1h 35m
2026-07-04 GLBAC - Jul 4, 11:45 UTCJul 4, 13:25 UTC1h 40m
2026-07-04 GLBAC - Jul 4, 07:25 UTCJul 4, 08:50 UTC1h 25m
2026-07-03 GLBAC - Jul 3, 12:00 UTCJul 3, 12:45 UTC45m
2026-07-03 GLBAC - Jul 3, 10:15 UTCJul 3, 10:55 UTC40m
2026-07-01 GLBAC - Jul 1, 13:35 UTCJul 1, 14:05 UTC30m
2026-07-01 GLBAC - Jul 1, 12:15 UTCJul 1, 12:45 UTC30m
2026-07-01 DHK842 - Jul 1, 02:15 UTCJul 1, 02:25 UTC10m
2026-06-30 GLBAC - Jun 30, 12:40 UTCJun 30, 13:20 UTC40m
2026-06-30 GLBAC - Jun 30, 10:25 UTCJun 30, 11:20 UTC55m
2026-06-30 DHK842 - Jun 30, 01:40 UTCJun 30, 01:50 UTC10m
2026-06-29 GLBAC - Jun 29, 12:34 UTCJun 29, 13:19 UTC45m
2026-06-29 GLBAC - Jun 29, 10:50 UTCJun 29, 11:25 UTC35m
2026-06-25 DHK842 - Jun 25, 01:30 UTCJun 25, 01:40 UTC10m
2026-06-24 DHK842 - Jun 24, 01:39 UTCJun 24, 01:49 UTC10m
2026-06-19 - - Jun 19, 00:55 UTCJun 19, 01:04 UTC10m
2026-06-18 GLBAC - Jun 18, 18:45 UTCJun 18, 19:25 UTC40m
2026-06-18 GLBAC - Jun 18, 15:30 UTCJun 18, 16:20 UTC50m
2026-06-18 DHK4AW - Jun 18, 01:00 UTCJun 18, 01:10 UTC10m
2026-06-16 GLBAC - Jun 16, 13:55 UTCJun 16, 14:55 UTC1h 0m
2026-06-16 GLBAC - Jun 16, 10:25 UTCJun 16, 12:10 UTC1h 45m
2026-06-14 GLBAC - Jun 14, 12:30 UTCJun 14, 13:20 UTC50m
2026-06-14 GLBAC - Jun 14, 10:25 UTCJun 14, 11:10 UTC45m
2026-06-06 DHK842 BRU → EMA Jun 6, 17:34 UTCJun 6, 17:44 UTC10m
2026-06-05 GLBAC - Jun 5, 12:45 UTCJun 5, 13:30 UTC45m
2026-06-05 GLBAC - Jun 5, 10:50 UTCJun 5, 11:30 UTC40m
2026-05-30 GLBAC - May 30, 13:25 UTCMay 30, 14:20 UTC55m
2026-05-30 GLBAC - May 30, 10:15 UTCMay 30, 11:10 UTC55m
2026-05-26 GLBAC - May 26, 12:05 UTCMay 26, 12:54 UTC50m
2026-05-26 GLBAC - May 26, 10:14 UTCMay 26, 11:09 UTC55m

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-LBAC page for operator, model, and routing details .

Mode-S 406723 frequently asked

What is Mode-S code 406723?
406723 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-LBAC.
Where is Mode-S 406723 registered?
Mode-S code 406723 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 406723 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406723, octal 20063443, decimal 4,220,707.
What flights does 406723 operate?
Mode-S 406723 has broadcast 4 distinct callsigns, including GLBAC, DHK842, DHK852, DHK4AW.