sensors Mode-S transponder

408143

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-DHMD · BOEING 777-200LR

Hex
408143
Octal
20100503
Decimal
4,227,395
Country
GB
Tail
G-DHMD
Type
B77L
Broadcasting now · callsign DHK051 · 31,000 ft
Flights observed
120
Distinct callsigns
20
Country
GB
Last broadcast
5h ago

Current position

408143 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 408143 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 20 distinct

Callsign Airline Flights Last seen
DHK524 DHL Air 18 2026-05-07
DHK591 DHL Air 15 2026-05-08
DHK075 - 9 2026-05-24
DHK593 DHL Air 8 2026-05-16
DHK053 DHL Air 8 2026-05-22
DHK009 - 7 2026-04-15
DHK528 DHL Air 6 2026-05-15
DHK076 DHL Air 6 2026-05-23
DHK051 DHL Air 6 2026-05-29
DHK004 - 5 2026-04-13
DHK705 DHL Air 4 2026-05-18
DHK054 DHL Air 4 2026-05-21
DHK511 DHL Air 3 2026-04-19
DHK052 DHL Air 3 2026-05-29
DHK868 DHL Air 2 2026-05-03
DHK814 DHL Air 2 2026-04-23
DHK372 DHL Air 2 2026-05-24
DHK371 DHL Air 2 2026-05-26
DHK018 DHL Air 2 2026-04-27
DHK007 - 2 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 DHK051 LEJ → LAX May 29, 23:40 UTCMay 30, 08:45 UTC9h 5m
2026-05-29 DHK052 EMA → BRU May 29, 04:55 UTCMay 29, 20:45 UTC15h 50m
2026-05-29 DHK052 EMA → BRU May 29, 01:15 UTCMay 29, 02:10 UTC55m
2026-05-28 DHK051 LEJ → LAX May 28, 12:25 UTCMay 28, 22:15 UTC9h 50m
2026-05-27 DHK051 LEJ → LAX May 27, 14:50 UTCMay 28, 06:25 UTC15h 35m
2026-05-27 DHK051 LEJ → LAX May 27, 08:50 UTCMay 28, 06:25 UTC21h 35m
2026-05-27 DHK051 LEJ → LAX May 27, 06:49 UTCMay 28, 06:25 UTC23h 35m
2026-05-27 DHK052 EMA → BRU May 27, 05:04 UTCMay 27, 21:30 UTC16h 25m
2026-05-26 DHK371 ORD → EMA May 26, 11:09 UTCMay 26, 18:30 UTC7h 20m
2026-05-24 DHK372 LEJ → EMA May 24, 16:30 UTCMay 24, 23:46 UTC7h 16m
2026-05-24 DHK800 LEJ → EMA May 24, 12:00 UTCMay 24, 13:20 UTC1h 20m
2026-05-24 DHK597 - May 24, 08:10 UTCMay 24, 09:30 UTC1h 20m
2026-05-24 DHK075 LEJ → EMA May 24, 04:05 UTCMay 24, 05:25 UTC1h 20m
2026-05-23 DHK075 - May 23, 22:05 UTCMay 24, 01:55 UTC3h 50m
2026-05-23 DHK076 EMA → EMA May 23, 00:50 UTCMay 23, 23:20 UTC22h 30m
2026-05-22 DHK076 EMA → EMA May 22, 23:20 UTCMay 23, 22:45 UTC23h 25m
2026-05-22 DHK053 LEJ → EMA May 22, 11:50 UTCMay 22, 21:00 UTC9h 10m
2026-05-21 DHK053 LEJ → EMA May 21, 14:55 UTCMay 22, 07:00 UTC16h 5m
2026-05-21 DHK053 LEJ → EMA May 21, 08:50 UTCMay 22, 07:00 UTC22h 10m
2026-05-21 DHK053 LEJ → EMA May 21, 06:50 UTCMay 22, 06:45 UTC23h 55m
2026-05-21 DHK054 EMA → BRU May 21, 04:55 UTCMay 21, 22:40 UTC17h 45m
2026-05-21 DHK054 EMA → BRU May 21, 01:25 UTCMay 21, 02:15 UTC50m
2026-05-20 DHK053 LEJ → EMA May 20, 12:15 UTCMay 20, 21:20 UTC9h 5m
2026-05-19 DHK053 LEJ → EMA May 19, 14:50 UTCMay 20, 06:20 UTC15h 31m
2026-05-19 DHK053 LEJ → EMA May 19, 08:50 UTCMay 20, 06:20 UTC21h 31m
2026-05-19 DHK053 LEJ → EMA May 19, 06:50 UTCMay 20, 06:20 UTC23h 31m
2026-05-19 DHK054 EMA → BRU May 19, 05:00 UTCMay 19, 21:45 UTC16h 45m
2026-05-19 DHK054 EMA → BRU May 19, 01:20 UTCMay 19, 02:10 UTC50m
2026-05-18 DHK003 - May 18, 15:05 UTCMay 18, 22:10 UTC7h 4m
2026-05-18 DHK705 CVG → BAH May 18, 04:00 UTCMay 18, 12:30 UTC8h 30m
2026-05-17 DHK705 CVG → BAH May 17, 23:55 UTCMay 18, 01:15 UTC1h 20m
2026-05-17 DHK051 LEJ → LAX May 17, 14:30 UTCMay 17, 21:25 UTC6h 55m
2026-05-17 DHK703 BAH → HKG May 17, 03:10 UTCMay 17, 10:50 UTC7h 40m
2026-05-16 DHK593 LEJ → EMA May 16, 12:55 UTCMay 16, 21:35 UTC8h 40m
2026-05-16 DHK593 LEJ → EMA May 16, 04:15 UTCMay 16, 09:31 UTC5h 16m
2026-05-15 DHK528 EMA → EMA May 15, 12:55 UTCMay 15, 13:20 UTC25m
2026-05-15 DHK528 EMA → EMA May 15, 02:20 UTCMay 15, 05:55 UTC3h 35m
2026-05-14 DHK528 EMA → EMA May 14, 22:15 UTCMay 14, 23:50 UTC1h 35m
2026-05-14 DHK593 LEJ → EMA May 14, 07:30 UTCMay 14, 16:15 UTC8h 45m
2026-05-14 DHK593 LEJ → EMA May 14, 01:05 UTCMay 14, 04:35 UTC3h 30m
2026-05-13 DHK593 LEJ → EMA May 13, 23:00 UTCMay 13, 23:15 UTC15m
2026-05-13 DHK528 EMA → EMA May 13, 13:00 UTCMay 13, 13:35 UTC35m
2026-05-13 DHK528 EMA → EMA May 13, 02:30 UTCMay 13, 06:00 UTC3h 30m
2026-05-12 DHK528 EMA → EMA May 12, 22:25 UTCMay 12, 23:55 UTC1h 30m
2026-05-12 DHK371 ORD → EMA May 12, 11:35 UTCMay 12, 18:25 UTC6h 50m
2026-05-10 DHK372 LEJ → EMA May 10, 11:05 UTCMay 10, 18:55 UTC7h 50m
2026-05-10 DHK075 LEJ → EMA May 10, 03:25 UTCMay 10, 04:55 UTC1h 30m
2026-05-09 DHK075 - May 9, 08:25 UTCMay 10, 01:04 UTC16h 40m
2026-05-09 DHK075 - May 9, 00:50 UTCMay 10, 00:45 UTC23h 55m
2026-05-08 DHK076 EMA → EMA May 8, 22:50 UTCMay 9, 22:20 UTC23h 30m

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

Mode-S 408143 frequently asked

What is Mode-S code 408143?
408143 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-DHMD.
Where is Mode-S 408143 registered?
Mode-S code 408143 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 408143 broadcasting right now?
Yes. Mode-S 408143 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 408143, octal 20100503, decimal 4,227,395.
What flights does 408143 operate?
Mode-S 408143 has broadcast 20 distinct callsigns, including DHK524, DHK591, DHK075, DHK593, DHK053.