Apparatus

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sensors Mode-S transponder

4B1C62

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-KTM · BRM AERO Bristell B23

Hex
4B1C62
Octal
22616142
Decimal
4,922,466
Country
CH
Tail
HB-KTM
Type
BR23
No current signal · last broadcast 15h ago
Flights observed
172
Distinct callsigns
1
Country
CH
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 4B1C62.

Country allocation

The ICAO 24-bit address 4B1C62 falls within the block assigned to Switzerland (CH) by ICAO Annex 10, Volume III. Every aircraft registered in Switzerland 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
HBKTM - 172 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 HBKTM - Jul 17, 10:30 UTCJul 17, 11:04 UTC35m
2026-07-17 HBKTM - Jul 17, 08:49 UTCJul 17, 09:40 UTC50m
2026-07-17 HBKTM - Jul 17, 07:55 UTCJul 17, 08:15 UTC20m
2026-07-17 HBKTM - Jul 17, 06:54 UTCJul 17, 07:14 UTC20m
2026-07-16 HBKTM - Jul 16, 11:40 UTCJul 16, 11:50 UTC10m
2026-07-16 HBKTM - Jul 16, 08:50 UTCJul 16, 09:05 UTC15m
2026-07-16 HBKTM - Jul 16, 07:20 UTCJul 16, 07:50 UTC30m
2026-07-16 HBKTM - Jul 16, 06:20 UTCJul 16, 06:45 UTC25m
2026-07-15 HBKTM - Jul 15, 15:40 UTCJul 15, 16:35 UTC55m
2026-07-15 HBKTM - Jul 15, 08:50 UTCJul 15, 10:20 UTC1h 30m
2026-07-15 HBKTM - Jul 15, 06:20 UTCJul 15, 08:05 UTC1h 45m
2026-07-14 HBKTM - Jul 14, 13:00 UTCJul 14, 13:10 UTC10m
2026-07-14 HBKTM - Jul 14, 09:40 UTCJul 14, 10:20 UTC40m
2026-07-14 HBKTM - Jul 14, 07:55 UTCJul 14, 08:05 UTC10m
2026-07-13 HBKTM - Jul 13, 09:25 UTCJul 13, 09:40 UTC15m
2026-07-13 HBKTM - Jul 13, 08:25 UTCJul 13, 09:00 UTC35m
2026-07-13 HBKTM - Jul 13, 07:40 UTCJul 13, 07:55 UTC15m
2026-07-13 HBKTM - Jul 13, 06:35 UTCJul 13, 07:15 UTC40m
2026-07-12 HBKTM - Jul 12, 14:40 UTCJul 12, 15:01 UTC20m
2026-07-12 HBKTM - Jul 12, 11:35 UTCJul 12, 11:50 UTC15m
2026-07-11 HBKTM - Jul 11, 08:55 UTCJul 11, 09:35 UTC40m
2026-07-11 HBKTM - Jul 11, 07:15 UTCJul 11, 08:01 UTC45m
2026-07-10 HBKTM - Jul 10, 10:00 UTCJul 10, 10:10 UTC10m
2026-07-10 HBKTM - Jul 10, 08:35 UTCJul 10, 09:15 UTC40m
2026-07-10 HBKTM - Jul 10, 07:55 UTCJul 10, 08:05 UTC10m
2026-07-10 HBKTM - Jul 10, 06:40 UTCJul 10, 07:20 UTC40m
2026-07-09 HBKTM - Jul 9, 15:30 UTCJul 9, 15:45 UTC15m
2026-07-09 HBKTM - Jul 9, 14:40 UTCJul 9, 14:50 UTC10m
2026-07-08 HBKTM - Jul 8, 14:35 UTCJul 8, 14:55 UTC20m
2026-07-08 HBKTM - Jul 8, 12:40 UTCJul 8, 13:35 UTC55m
2026-07-07 HBKTM - Jul 7, 15:10 UTCJul 7, 15:55 UTC45m
2026-07-06 HBKTM - Jul 6, 14:50 UTCJul 6, 16:25 UTC1h 35m
2026-07-05 HBKTM - Jul 5, 14:55 UTCJul 5, 15:45 UTC50m
2026-07-05 HBKTM - Jul 5, 09:25 UTCJul 5, 10:25 UTC1h 0m
2026-07-04 HBKTM - Jul 4, 16:30 UTCJul 4, 17:05 UTC35m
2026-07-04 HBKTM - Jul 4, 14:25 UTCJul 4, 15:35 UTC1h 10m
2026-07-04 HBKTM - Jul 4, 12:05 UTCJul 4, 12:55 UTC50m
2026-07-04 HBKTM - Jul 4, 08:55 UTCJul 4, 10:05 UTC1h 10m
2026-07-04 HBKTM - Jul 4, 07:25 UTCJul 4, 08:05 UTC40m
2026-07-03 HBKTM - Jul 3, 15:30 UTCJul 3, 15:45 UTC15m
2026-07-03 HBKTM - Jul 3, 14:15 UTCJul 3, 15:00 UTC45m
2026-07-03 HBKTM - Jul 3, 12:10 UTCJul 3, 13:00 UTC50m
2026-07-03 HBKTM - Jul 3, 10:40 UTCJul 3, 10:50 UTC10m
2026-07-03 HBKTM - Jul 3, 09:55 UTCJul 3, 10:10 UTC15m
2026-07-03 HBKTM - Jul 3, 06:55 UTCJul 3, 07:20 UTC25m
2026-07-02 HBKTM - Jul 2, 14:20 UTCJul 2, 15:00 UTC40m
2026-07-02 HBKTM - Jul 2, 12:15 UTCJul 2, 13:05 UTC50m
2026-07-02 HBKTM - Jul 2, 09:20 UTCJul 2, 10:15 UTC55m
2026-07-02 HBKTM - Jul 2, 07:30 UTCJul 2, 08:35 UTC1h 5m
2026-06-30 HBKTM - Jun 30, 11:55 UTCJun 30, 12:35 UTC40m

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 HB-KTM page for operator, model, and routing details .

Mode-S 4B1C62 frequently asked

What is Mode-S code 4B1C62?
4B1C62 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-KTM.
Where is Mode-S 4B1C62 registered?
Mode-S code 4B1C62 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1C62 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1C62, octal 22616142, decimal 4,922,466.
What flights does 4B1C62 operate?
Mode-S 4B1C62 has broadcast 1 distinct callsign, including HBKTM.