Apparatus

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sensors Mode-S transponder

406CBC

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-WLTS · BELL 429 GlobalRanger

Hex
406CBC
Octal
20066274
Decimal
4,222,140
Country
GB
Tail
G-WLTS
Type
B429
No current signal · last broadcast 13h ago
Flights observed
286
Distinct callsigns
1
Country
GB
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 406CBC.

Country allocation

The ICAO 24-bit address 406CBC 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 1 distinct

Callsign Airline Flights Last seen
HLE22 - 286 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 HLE22 - Jul 17, 14:39 UTCJul 17, 15:35 UTC55m
2026-07-17 HLE22 - Jul 17, 12:30 UTCJul 17, 12:55 UTC25m
2026-07-17 HLE22 - Jul 17, 11:39 UTCJul 17, 11:55 UTC15m
2026-07-17 HLE22 - Jul 17, 09:35 UTCJul 17, 09:55 UTC20m
2026-07-16 HLE22 - Jul 16, 17:54 UTCJul 16, 18:10 UTC15m
2026-07-16 HLE22 - Jul 16, 15:00 UTCJul 16, 15:10 UTC10m
2026-07-16 HLE22 - Jul 16, 13:25 UTCJul 16, 13:34 UTC10m
2026-07-15 HLE22 - Jul 15, 19:20 UTCJul 15, 19:50 UTC30m
2026-07-15 HLE22 - Jul 15, 18:10 UTCJul 15, 18:40 UTC30m
2026-07-15 HLE22 - Jul 15, 16:40 UTCJul 15, 16:50 UTC10m
2026-07-14 HLE22 - Jul 14, 21:35 UTCJul 14, 22:05 UTC30m
2026-07-14 HLE22 - Jul 14, 12:15 UTCJul 14, 12:25 UTC10m
2026-07-14 HLE22 - Jul 14, 10:20 UTCJul 14, 10:30 UTC10m
2026-07-14 HLE22 - Jul 14, 09:05 UTCJul 14, 09:20 UTC15m
2026-07-14 HLE22 - Jul 14, 07:50 UTCJul 14, 08:05 UTC15m
2026-07-13 HLE22 - Jul 13, 21:45 UTCJul 13, 23:10 UTC1h 25m
2026-07-13 HLE22 - Jul 13, 20:40 UTCJul 13, 20:50 UTC10m
2026-07-13 HLE22 - Jul 13, 19:50 UTCJul 13, 20:00 UTC10m
2026-07-13 HLE22 - Jul 13, 18:35 UTCJul 13, 19:00 UTC25m
2026-07-13 HLE22 - Jul 13, 16:20 UTCJul 13, 16:30 UTC10m
2026-07-12 HLE22 - Jul 12, 16:35 UTCJul 12, 16:45 UTC10m
2026-07-12 HLE22 - Jul 12, 15:35 UTCJul 12, 15:50 UTC15m
2026-07-12 HLE22 - Jul 12, 14:40 UTCJul 12, 14:50 UTC10m
2026-07-12 HLE22 - Jul 12, 13:35 UTCJul 12, 13:55 UTC20m
2026-07-12 HLE22 - Jul 12, 11:30 UTCJul 12, 12:05 UTC35m
2026-07-12 HLE22 - Jul 12, 09:55 UTCJul 12, 10:25 UTC30m
2026-07-11 HLE22 - Jul 11, 19:25 UTCJul 11, 20:15 UTC50m
2026-07-11 HLE22 - Jul 11, 17:05 UTCJul 11, 17:20 UTC15m
2026-07-10 HLE22 - Jul 10, 23:20 UTCJul 10, 23:30 UTC10m
2026-07-10 HLE22 - Jul 10, 22:05 UTCJul 10, 22:15 UTC10m
2026-07-10 HLE22 - Jul 10, 10:25 UTCJul 10, 11:20 UTC55m
2026-07-10 HLE22 - Jul 10, 09:35 UTCJul 10, 09:50 UTC15m
2026-07-01 HLE22 - Jul 1, 23:55 UTCJul 2, 00:05 UTC10m
2026-07-01 HLE22 - Jul 1, 22:45 UTCJul 1, 23:05 UTC20m
2026-07-01 HLE22 - Jul 1, 21:15 UTCJul 1, 21:25 UTC10m
2026-07-01 HLE22 - Jul 1, 16:10 UTCJul 1, 16:50 UTC40m
2026-07-01 HLE22 - Jul 1, 14:35 UTCJul 1, 15:05 UTC30m
2026-07-01 HLE22 - Jul 1, 13:15 UTCJul 1, 13:30 UTC15m
2026-06-22 HLE22 - Jun 22, 13:19 UTCJun 22, 13:54 UTC35m
2026-06-22 HLE22 - Jun 22, 12:19 UTCJun 22, 12:30 UTC10m
2026-06-22 HLE22 - Jun 22, 10:30 UTCJun 22, 10:40 UTC10m
2026-06-22 HLE22 - Jun 22, 00:14 UTCJun 22, 00:29 UTC15m
2026-06-21 HLE22 - Jun 21, 22:20 UTCJun 21, 22:29 UTC10m
2026-06-21 HLE22 - Jun 21, 20:14 UTCJun 21, 20:59 UTC45m
2026-06-21 HLE22 - Jun 21, 18:54 UTCJun 21, 19:09 UTC15m
2026-06-21 HLE22 - Jun 21, 16:39 UTCJun 21, 16:49 UTC10m
2026-06-21 HLE22 - Jun 21, 15:44 UTCJun 21, 15:59 UTC15m
2026-06-21 HLE22 - Jun 21, 14:59 UTCJun 21, 15:09 UTC10m
2026-06-21 HLE22 - Jun 21, 13:59 UTCJun 21, 14:10 UTC10m
2026-06-21 HLE22 - Jun 21, 12:49 UTCJun 21, 13:00 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-WLTS page for operator, model, and routing details .

Mode-S 406CBC frequently asked

What is Mode-S code 406CBC?
406CBC is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-WLTS.
Where is Mode-S 406CBC registered?
Mode-S code 406CBC 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 406CBC broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406CBC, octal 20066274, decimal 4,222,140.
What flights does 406CBC operate?
Mode-S 406CBC has broadcast 1 distinct callsign, including HLE22.