Apparatus

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sensors Mode-S transponder

4067A4

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-DHLK · BOEING 767-300

Hex
4067A4
Octal
20063644
Decimal
4,220,836
Country
GB
Tail
G-DHLK
Type
B763
No current signal · last broadcast Jul 26, 18:05 UTC
Flights observed
254
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 18:05 UTC

Last known position

Most recent position reported by Mode-S 4067A4.

Country allocation

The ICAO 24-bit address 4067A4 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
DHK037 - 18 2026-07-23
DHK038 - 17 2026-07-13
DHK036 - 15 2026-07-15
DHK035 - 13 2026-07-19
DHK817 DHL Air 12 2026-05-17
DHK3999 DHL Air 9 2026-07-21
DHK7LK DHL Air 8 2026-07-21
DHK3998 DHL Air 8 2026-07-24
DHK4SM DHL Air 7 2026-07-23
DHK376 DHL Air 7 2026-07-25
DHK2507 - 7 2026-07-08
DHK842 - 6 2026-07-09
DHK453 - 6 2026-07-08
DHK897 - 5 2026-06-28
DHK811 DHL Air 5 2026-06-18
DHK4AW - 5 2026-07-21
DHK2506 - 5 2026-07-07
DHK009A - 5 2026-04-13
DHK373 - 4 2026-06-22
DHK367 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DHK370 EMA → CVG Jul 26, 09:55 UTCJul 26, 18:05 UTC8h 10m
2026-07-25 DHK007 - Jul 25, 16:10 UTCJul 25, 23:00 UTC6h 50m
2026-07-25 DHK376 LHR → CVG Jul 25, 04:40 UTCJul 25, 13:35 UTC8h 55m
2026-07-24 DHK376 LHR → CVG Jul 24, 22:25 UTCJul 24, 23:45 UTC1h 20m
2026-07-24 DHK3997 KEF → LEJ Jul 24, 17:35 UTCJul 24, 19:45 UTC2h 10m
2026-07-24 DHK3998 LEJ → KEF Jul 24, 04:35 UTCJul 24, 07:00 UTC2h 25m
2026-07-23 DHK037 - Jul 23, 22:10 UTCJul 23, 22:55 UTC45m
2026-07-23 DHK841 EMA → BRU Jul 23, 19:35 UTCJul 23, 20:20 UTC45m
2026-07-23 DHK4SM LEJ → EMA Jul 23, 01:35 UTCJul 23, 02:55 UTC1h 20m
2026-07-22 DHK4911 BSL → LEJ Jul 22, 20:55 UTCJul 22, 21:50 UTC55m
2026-07-22 DHK4904 LEJ → BSL Jul 22, 03:00 UTCJul 22, 03:55 UTC55m
2026-07-21 DHK7LK EMA → LEJ Jul 21, 21:45 UTCJul 21, 23:10 UTC1h 25m
2026-07-21 DHK3999 KEF → EMA Jul 21, 17:05 UTCJul 21, 19:15 UTC2h 10m
2026-07-21 DHK3998 LEJ → KEF Jul 21, 04:35 UTCJul 21, 07:15 UTC2h 40m
2026-07-21 DHK4AW LEJ → EMA Jul 21, 00:00 UTCJul 21, 01:25 UTC1h 25m
2026-07-20 DHK4911 BSL → LEJ Jul 20, 20:45 UTCJul 20, 21:40 UTC55m
2026-07-20 DHK4904 LEJ → BSL Jul 20, 02:10 UTCJul 20, 03:05 UTC55m
2026-07-19 DHK52H EMA → LEJ Jul 19, 21:15 UTCJul 19, 22:40 UTC1h 25m
2026-07-19 DHK035 - Jul 19, 19:00 UTCJul 19, 19:50 UTC50m
2026-07-17 DHK179 - Jul 17, 14:10 UTCJul 17, 21:00 UTC6h 50m
2026-07-16 DHK035 - Jul 16, 22:19 UTCJul 17, 06:05 UTC7h 45m
2026-07-16 DHK035 - Jul 16, 18:19 UTCJul 16, 18:34 UTC15m
2026-07-15 DHK036 - Jul 15, 19:05 UTCJul 16, 16:35 UTC21h 30m
2026-07-15 DHK036 - Jul 15, 17:05 UTCJul 16, 16:35 UTC23h 30m
2026-07-15 DHK036 - Jul 15, 14:15 UTCJul 15, 19:50 UTC5h 35m
2026-07-15 DHK181 - Jul 15, 12:05 UTCJul 15, 13:00 UTC55m
2026-07-15 DHK181 - Jul 15, 02:35 UTCJul 15, 09:40 UTC7h 5m
2026-07-14 DHK177 - Jul 14, 20:50 UTCJul 15, 00:15 UTC3h 24m
2026-07-14 DHK177 - Jul 14, 20:30 UTCJul 14, 20:45 UTC15m
2026-07-14 DHK177 - Jul 14, 17:15 UTCJul 14, 20:25 UTC3h 10m
2026-07-14 DHK177 - Jul 14, 13:45 UTCJul 14, 14:40 UTC55m
2026-07-14 DHK037 - Jul 14, 04:20 UTCJul 14, 10:25 UTC6h 5m
2026-07-14 DHK037 - Jul 14, 01:25 UTCJul 14, 01:40 UTC15m
2026-07-13 DHK038 - Jul 13, 09:45 UTCJul 13, 23:45 UTC14h 0m
2026-07-13 DHK161A - Jul 13, 06:45 UTCJul 13, 07:45 UTC1h 0m
2026-07-12 DHK159 - Jul 12, 17:45 UTCJul 13, 01:35 UTC7h 50m
2026-07-11 DHK007 - Jul 11, 16:20 UTCJul 11, 23:25 UTC7h 5m
2026-07-11 DHK376 LEJ → CVG Jul 11, 04:15 UTCJul 11, 13:15 UTC9h 0m
2026-07-10 - EMA → LEJ Jul 10, 22:30 UTCJul 10, 23:55 UTC1h 25m
2026-07-10 DHK3997 KEF → EMA Jul 10, 17:05 UTCJul 10, 19:20 UTC2h 15m
2026-07-10 DHK3998 EMA → KEF Jul 10, 04:35 UTCJul 10, 06:55 UTC2h 20m
2026-07-10 DHK816 LEJ → EMA Jul 10, 00:00 UTCJul 10, 01:25 UTC1h 25m
2026-07-09 DHK56W EMA → LEJ Jul 9, 19:00 UTCJul 9, 20:20 UTC1h 20m
2026-07-09 DHK842 - Jul 9, 01:00 UTCJul 9, 01:45 UTC45m
2026-07-08 DHK453 EMA → BRU Jul 8, 22:20 UTCJul 8, 23:05 UTC45m
2026-07-08 DHK2507 - Jul 8, 19:40 UTCJul 8, 20:25 UTC45m
2026-07-08 DHK833P EMA → BFS Jul 8, 18:10 UTCJul 8, 18:50 UTC40m
2026-07-08 DHK832P - Jul 8, 07:35 UTCJul 8, 08:15 UTC40m
2026-07-08 - EMA → BFS Jul 8, 05:35 UTCJul 8, 06:15 UTC40m
2026-07-08 DHK842 - Jul 8, 00:55 UTCJul 8, 01:40 UTC45m

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

Mode-S 4067A4 frequently asked

What is Mode-S code 4067A4?
4067A4 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-DHLK.
Where is Mode-S 4067A4 registered?
Mode-S code 4067A4 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 4067A4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4067A4, octal 20063644, decimal 4,220,836.
What flights does 4067A4 operate?
Mode-S 4067A4 has broadcast 20 distinct callsigns, including DHK037, DHK038, DHK036, DHK035, DHK817.