Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4B43AE

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-ZQK · AGUSTA AW-139

Hex
4B43AE
Octal
22641656
Decimal
4,932,526
Country
CH
Tail
HB-ZQK
Type
A139
No current signal · last broadcast Jul 26, 19:50 UTC
Flights observed
258
Distinct callsigns
1
Country
CH
Last broadcast
Jul 26, 19:50 UTC

Last known position

Most recent position reported by Mode-S 4B43AE.

Country allocation

The ICAO 24-bit address 4B43AE 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
HBZQK - 258 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HBZQK - Jul 26, 19:25 UTCJul 26, 19:45 UTC20m
2026-07-26 HBZQK - Jul 26, 18:20 UTCJul 26, 18:30 UTC10m
2026-07-25 HBZQK - Jul 25, 11:25 UTCJul 25, 12:10 UTC45m
2026-07-22 HBZQK - Jul 22, 13:35 UTCJul 22, 13:50 UTC15m
2026-07-22 HBZQK - Jul 22, 12:40 UTCJul 22, 12:50 UTC10m
2026-07-21 HBZQK - Jul 21, 16:40 UTCJul 21, 16:50 UTC10m
2026-07-21 HBZQK - Jul 21, 14:30 UTCJul 21, 16:10 UTC1h 40m
2026-07-21 HBZQK - Jul 21, 08:40 UTCJul 21, 08:50 UTC10m
2026-07-21 HBZQK - Jul 21, 07:20 UTCJul 21, 07:35 UTC15m
2026-07-20 HBZQK - Jul 20, 17:05 UTCJul 20, 17:25 UTC20m
2026-07-20 HBZQK - Jul 20, 16:30 UTCJul 20, 16:40 UTC10m
2026-07-20 HBZQK - Jul 20, 11:05 UTCJul 20, 11:15 UTC10m
2026-07-20 HBZQK - Jul 20, 10:15 UTCJul 20, 10:25 UTC10m
2026-07-20 HBZQK - Jul 20, 09:15 UTCJul 20, 09:25 UTC10m
2026-07-19 HBZQK NCE → CEQ Jul 19, 17:40 UTCJul 19, 18:05 UTC25m
2026-07-19 HBZQK - Jul 19, 17:00 UTCJul 19, 17:10 UTC10m
2026-07-19 HBZQK - Jul 19, 13:50 UTCJul 19, 14:45 UTC55m
2026-07-19 HBZQK - Jul 19, 11:25 UTCJul 19, 12:25 UTC1h 0m
2026-07-18 HBZQK - Jul 18, 13:00 UTCJul 18, 13:55 UTC55m
2026-07-18 HBZQK - Jul 18, 08:05 UTCJul 18, 09:00 UTC55m
2026-07-18 HBZQK - Jul 18, 07:00 UTCJul 18, 07:10 UTC10m
2026-07-17 HBZQK - Jul 17, 13:40 UTCJul 17, 13:50 UTC10m
2026-07-17 HBZQK - Jul 17, 11:30 UTCJul 17, 11:39 UTC10m
2026-07-16 HBZQK - Jul 16, 17:05 UTCJul 16, 19:20 UTC2h 15m
2026-07-16 HBZQK - Jul 16, 14:10 UTCJul 16, 14:25 UTC15m
2026-07-16 HBZQK - Jul 16, 08:40 UTCJul 16, 08:50 UTC10m
2026-07-16 HBZQK - Jul 16, 08:05 UTCJul 16, 08:10 UTC5m
2026-07-16 HBZQK - Jul 16, 07:15 UTCJul 16, 07:35 UTC20m
2026-07-16 HBZQK - Jul 16, 03:30 UTCJul 16, 03:45 UTC15m
2026-07-15 HBZQK MCM → NCE Jul 15, 17:45 UTCJul 15, 17:55 UTC10m
2026-07-15 HBZQK - Jul 15, 16:55 UTCJul 15, 17:15 UTC20m
2026-07-15 HBZQK - Jul 15, 15:30 UTCJul 15, 15:50 UTC20m
2026-07-15 HBZQK - Jul 15, 15:00 UTCJul 15, 15:15 UTC15m
2026-07-13 HBZQK - Jul 13, 18:45 UTCJul 13, 19:20 UTC35m
2026-07-13 HBZQK - Jul 13, 14:50 UTCJul 13, 15:30 UTC40m
2026-07-13 HBZQK - Jul 13, 13:45 UTCJul 13, 14:15 UTC30m
2026-07-13 HBZQK - Jul 13, 10:50 UTCJul 13, 11:00 UTC10m
2026-07-13 HBZQK - Jul 13, 08:25 UTCJul 13, 08:55 UTC30m
2026-07-12 HBZQK - Jul 12, 15:25 UTCJul 12, 16:10 UTC45m
2026-07-12 HBZQK - Jul 12, 12:05 UTCJul 12, 13:10 UTC1h 5m
2026-07-10 HBZQK - Jul 10, 15:30 UTCJul 10, 17:25 UTC1h 55m
2026-07-10 HBZQK - Jul 10, 14:15 UTCJul 10, 14:25 UTC10m
2026-07-10 HBZQK - Jul 10, 12:35 UTCJul 10, 13:35 UTC1h 0m
2026-07-09 HBZQK - Jul 9, 11:15 UTCJul 9, 11:25 UTC10m
2026-07-09 HBZQK - Jul 9, 10:15 UTCJul 9, 10:30 UTC15m
2026-07-08 HBZQK - Jul 8, 18:50 UTCJul 8, 19:10 UTC20m
2026-07-08 HBZQK - Jul 8, 18:20 UTCJul 8, 18:30 UTC10m
2026-07-06 HBZQK NCE → CEQ Jul 6, 14:35 UTCJul 6, 14:45 UTC10m
2026-07-06 HBZQK - Jul 6, 13:30 UTCJul 6, 13:40 UTC10m
2026-07-06 HBZQK - Jul 6, 08:10 UTCJul 6, 08:25 UTC15m

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

Mode-S 4B43AE frequently asked

What is Mode-S code 4B43AE?
4B43AE is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-ZQK.
Where is Mode-S 4B43AE registered?
Mode-S code 4B43AE is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B43AE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B43AE, octal 22641656, decimal 4,932,526.
What flights does 4B43AE operate?
Mode-S 4B43AE has broadcast 1 distinct callsign, including HBZQK.