Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4067BF

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-HEMN · AIRBUS HELICOPTERS EC-135/635

Hex
4067BF
Octal
20063677
Decimal
4,220,863
Country
GB
Tail
G-HEMN
Type
EC35
No current signal · last broadcast 4d ago
Flights observed
261
Distinct callsigns
2
Country
GB
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 4067BF.

Country allocation

The ICAO 24-bit address 4067BF 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
HLE72 - 184 2026-07-23
HLE75 - 77 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 HLE72 - Jul 23, 18:10 UTCJul 23, 18:20 UTC10m
2026-07-23 HLE72 - Jul 23, 17:10 UTCJul 23, 17:20 UTC10m
2026-07-23 HLE72 - Jul 23, 16:30 UTCJul 23, 16:40 UTC10m
2026-07-22 HLE72 - Jul 22, 12:05 UTCJul 22, 12:45 UTC40m
2026-07-21 HLE72 - Jul 21, 16:05 UTCJul 21, 16:20 UTC15m
2026-07-21 HLE72 - Jul 21, 15:05 UTCJul 21, 15:25 UTC20m
2026-07-21 HLE72 - Jul 21, 10:50 UTCJul 21, 11:35 UTC45m
2026-07-20 HLE72 - Jul 20, 12:25 UTCJul 20, 12:35 UTC10m
2026-07-20 HLE72 - Jul 20, 11:05 UTCJul 20, 11:25 UTC20m
2026-07-20 HLE72 - Jul 20, 10:05 UTCJul 20, 10:15 UTC10m
2026-07-19 HLE72 - Jul 19, 15:35 UTCJul 19, 16:45 UTC1h 10m
2026-07-19 HLE72 - Jul 19, 14:35 UTCJul 19, 14:55 UTC20m
2026-07-18 HLE72 - Jul 18, 18:45 UTCJul 18, 19:00 UTC15m
2026-07-18 HLE72 - Jul 18, 18:00 UTCJul 18, 18:10 UTC10m
2026-07-18 HLE72 - Jul 18, 13:35 UTCJul 18, 14:10 UTC35m
2026-07-18 HLE72 - Jul 18, 12:45 UTCJul 18, 12:55 UTC10m
2026-07-18 HLE72 - Jul 18, 12:00 UTCJul 18, 12:10 UTC10m
2026-07-18 HLE72 - Jul 18, 11:05 UTCJul 18, 11:15 UTC10m
2026-07-17 HLE72 - Jul 17, 17:05 UTCJul 17, 17:15 UTC10m
2026-07-17 HLE72 - Jul 17, 15:44 UTCJul 17, 16:19 UTC35m
2026-07-17 HLE72 - Jul 17, 09:55 UTCJul 17, 10:05 UTC10m
2026-07-17 HLE72 - Jul 17, 08:20 UTCJul 17, 08:35 UTC15m
2026-07-16 HLE72 - Jul 16, 10:45 UTCJul 16, 10:55 UTC10m
2026-07-16 HLE72 - Jul 16, 09:10 UTCJul 16, 09:40 UTC30m
2026-07-15 HLE72 - Jul 15, 14:05 UTCJul 15, 14:55 UTC50m
2026-07-15 HLE72 - Jul 15, 11:40 UTCJul 15, 11:50 UTC10m
2026-07-14 HLE72 - Jul 14, 18:10 UTCJul 14, 19:05 UTC55m
2026-07-14 HLE72 - Jul 14, 11:45 UTCJul 14, 12:05 UTC20m
2026-07-13 HLE72 - Jul 13, 10:45 UTCJul 13, 11:15 UTC30m
2026-07-12 HLE72 - Jul 12, 14:55 UTCJul 12, 15:05 UTC10m
2026-07-11 HLE72 - Jul 11, 19:55 UTCJul 11, 20:05 UTC10m
2026-07-11 HLE72 - Jul 11, 17:45 UTCJul 11, 17:55 UTC10m
2026-07-11 HLE72 - Jul 11, 12:30 UTCJul 11, 12:40 UTC10m
2026-07-11 HLE72 - Jul 11, 11:05 UTCJul 11, 11:15 UTC10m
2026-07-10 HLE72 - Jul 10, 19:25 UTCJul 10, 19:35 UTC10m
2026-07-10 HLE72 - Jul 10, 18:10 UTCJul 10, 18:20 UTC10m
2026-07-10 HLE72 - Jul 10, 17:00 UTCJul 10, 17:10 UTC10m
2026-07-10 HLE72 - Jul 10, 14:30 UTCJul 10, 15:20 UTC50m
2026-07-10 HLE72 - Jul 10, 13:30 UTCJul 10, 13:40 UTC10m
2026-07-10 HLE72 - Jul 10, 10:25 UTCJul 10, 10:35 UTC10m
2026-07-10 HLE72 - Jul 10, 08:50 UTCJul 10, 09:45 UTC55m
2026-07-10 HLE72 - Jul 10, 07:55 UTCJul 10, 08:05 UTC10m
2026-07-09 HLE72 - Jul 9, 15:30 UTCJul 9, 15:40 UTC10m
2026-07-09 HLE72 - Jul 9, 13:45 UTCJul 9, 13:55 UTC10m
2026-07-09 HLE72 - Jul 9, 09:20 UTCJul 9, 09:30 UTC10m
2026-07-09 HLE72 - Jul 9, 08:10 UTCJul 9, 08:20 UTC10m
2026-07-08 HLE72 - Jul 8, 16:50 UTCJul 8, 17:20 UTC30m
2026-07-08 HLE72 - Jul 8, 13:45 UTCJul 8, 14:30 UTC45m
2026-07-08 HLE72 - Jul 8, 12:45 UTCJul 8, 12:55 UTC10m
2026-07-08 HLE72 - Jul 8, 09:45 UTCJul 8, 09:55 UTC10m

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

Mode-S 4067BF frequently asked

What is Mode-S code 4067BF?
4067BF is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-HEMN.
Where is Mode-S 4067BF registered?
Mode-S code 4067BF 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 4067BF broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4067BF, octal 20063677, decimal 4,220,863.
What flights does 4067BF operate?
Mode-S 4067BF has broadcast 2 distinct callsigns, including HLE72, HLE75.