Apparatus

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sensors Mode-S transponder

4B1A24

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JXK · AIRBUS A-320

Hex
4B1A24
Octal
22615044
Decimal
4,921,892
Country
CH
Tail
HB-JXK
Type
A320
Broadcasting now · callsign EZS48YR · 22,700 ft
Flights observed
607
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 19:35 UTC

Current position

4B1A24 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B1A24 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 20 distinct

Callsign Airline Flights Last seen
EZS72MD - 8 2026-07-07
EZS25QK - 8 2026-07-07
EZS78GR - 7 2026-07-17
EZS71RV - 7 2026-07-26
EZS59XA Easyjet Switzerland 7 2026-07-26
EZS14EZ - 7 2026-07-17
EZS91YN - 6 2026-07-19
EZS82EN Easyjet Switzerland 6 2026-07-23
EZS79YP Easyjet Switzerland 6 2026-07-21
EZS72YG Easyjet Switzerland 6 2026-06-10
EZS63WG Easyjet Switzerland 6 2026-07-25
EZS63BD - 6 2026-07-21
EZS62HY Easyjet Switzerland 6 2026-07-20
EZS62GR - 6 2026-07-19
EZS48AX - 6 2026-07-20
EZS37UG - 6 2026-07-12
EZS36FD Easyjet Switzerland 6 2026-07-23
EZS17GH Easyjet Switzerland 6 2026-07-25
EZS12XR - 6 2026-07-16
EJU85QE - 6 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZS43JB RHO → GVA Jul 26, 16:30 UTCJul 26, 19:30 UTC3h 0m
2026-07-26 EZS62AV GVA → RHO Jul 26, 12:35 UTCJul 26, 15:05 UTC2h 30m
2026-07-26 EZS83TQ - Jul 26, 10:20 UTCJul 26, 11:30 UTC1h 10m
2026-07-26 EZS58ZV - Jul 26, 07:45 UTCJul 26, 08:50 UTC1h 5m
2026-07-26 EZS59XA NCE → GVA Jul 26, 06:05 UTCJul 26, 06:45 UTC41m
2026-07-26 EZS71RV GVA → NCE Jul 26, 04:20 UTCJul 26, 05:00 UTC40m
2026-07-25 EZS17GH BOD → GVA Jul 25, 21:00 UTCJul 25, 21:55 UTC55m
2026-07-25 EZS63WG GVA → BOD Jul 25, 18:55 UTCJul 25, 19:45 UTC50m
2026-07-25 EZS43AP TIV → GVA Jul 25, 16:20 UTCJul 25, 18:00 UTC1h 40m
2026-07-25 EZS48KU GVA → TIV Jul 25, 12:20 UTCJul 25, 13:40 UTC1h 20m
2026-07-25 EZS59MN NCE → GVA Jul 25, 10:20 UTCJul 25, 11:15 UTC55m
2026-07-25 EZS1395 GVA → NCE Jul 25, 08:00 UTCJul 25, 08:45 UTC45m
2026-07-25 EZS51WA - Jul 25, 06:10 UTCJul 25, 07:05 UTC55m
2026-07-25 EZS96XV - Jul 25, 04:10 UTCJul 25, 05:00 UTC50m
2026-07-24 EZS65HE AMS → GVA Jul 24, 19:55 UTCJul 24, 21:05 UTC1h 10m
2026-07-24 EZS43XU GVA → AMS Jul 24, 17:25 UTCJul 24, 18:35 UTC1h 10m
2026-07-24 EZS18FL - Jul 24, 15:25 UTCJul 24, 16:25 UTC1h 0m
2026-07-24 EZS1343 - Jul 24, 13:35 UTCJul 24, 14:30 UTC55m
2026-07-24 EZS41BX BHX → GVA Jul 24, 11:05 UTCJul 24, 12:35 UTC1h 30m
2026-07-24 EZS1571 GVA → BHX Jul 24, 08:40 UTCJul 24, 09:55 UTC1h 15m
2026-07-24 EZS41MA NTE → GVA Jul 24, 06:30 UTCJul 24, 07:30 UTC1h 0m
2026-07-24 EZS62TJ GVA → NTE Jul 24, 04:35 UTCJul 24, 05:40 UTC1h 5m
2026-07-23 EZS36FD PMO → GVA Jul 23, 19:15 UTCJul 23, 20:55 UTC1h 40m
2026-07-23 EZS82EN GVA → PMO Jul 23, 16:55 UTCJul 23, 18:15 UTC1h 20m
2026-07-23 EZS34ML LCG → GVA Jul 23, 14:20 UTCJul 23, 16:00 UTC1h 40m
2026-07-23 EZS1369 GVA → LCG Jul 23, 11:20 UTCJul 23, 13:15 UTC1h 55m
2026-07-23 EZS73NK TIA → GVA Jul 23, 08:15 UTCJul 23, 10:05 UTC1h 50m
2026-07-23 EZS31WH - Jul 23, 05:15 UTCJul 23, 06:40 UTC1h 25m
2026-07-22 EZS59MQ LGW → GVA Jul 22, 19:45 UTCJul 22, 20:55 UTC1h 10m
2026-07-22 EZS23YH GVA → LGW Jul 22, 17:40 UTCJul 22, 18:55 UTC1h 15m
2026-07-22 EZS43AP TIV → GVA Jul 22, 14:50 UTCJul 22, 16:35 UTC1h 45m
2026-07-22 EZS48KU GVA → TIV Jul 22, 12:05 UTCJul 22, 13:30 UTC1h 25m
2026-07-21 EZS52CP - Jul 21, 15:20 UTCJul 21, 18:15 UTC2h 55m
2026-07-21 EZS86XB GVA → HER Jul 21, 11:40 UTCJul 21, 14:00 UTC2h 20m
2026-07-21 EZS63BD LIS → GVA Jul 21, 08:20 UTCJul 21, 10:15 UTC1h 55m
2026-07-21 EZS79YP GVA → LIS Jul 21, 04:50 UTCJul 21, 07:15 UTC2h 25m
2026-07-20 EZS82CH BRI → GVA Jul 20, 19:00 UTCJul 20, 20:50 UTC1h 50m
2026-07-20 EZS37HP GVA → BRI Jul 20, 16:50 UTCJul 20, 18:10 UTC1h 20m
2026-07-20 EJU79CA IBZ → GVA Jul 20, 14:05 UTCJul 20, 15:40 UTC1h 35m
2026-07-20 EJU85QE GVA → IBZ Jul 20, 11:20 UTCJul 20, 12:55 UTC1h 35m
2026-07-20 EZS48AX - Jul 20, 08:10 UTCJul 20, 10:05 UTC1h 55m
2026-07-20 EZS62HY PRG → BSL Jul 20, 05:10 UTCJul 20, 06:45 UTC1h 35m
2026-07-19 EZS17GH BOD → GVA Jul 19, 20:25 UTCJul 19, 21:20 UTC55m
2026-07-19 EZS63WG GVA → BOD Jul 19, 18:35 UTCJul 19, 19:35 UTC1h 0m
2026-07-19 EZS49JR - Jul 19, 16:55 UTCJul 19, 17:40 UTC45m
2026-07-19 EZS91HZ GVA → NCE Jul 19, 15:10 UTCJul 19, 16:00 UTC50m
2026-07-19 EZS24HA LUX → BER Jul 19, 12:15 UTCJul 19, 14:10 UTC1h 55m
2026-07-19 EZS32QW GVA → BDS Jul 19, 09:45 UTCJul 19, 11:15 UTC1h 30m
2026-07-19 EZS62GR - Jul 19, 07:25 UTCJul 19, 08:35 UTC1h 10m
2026-07-19 EZS91YN - Jul 19, 05:10 UTCJul 19, 06:10 UTC1h 0m

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

Mode-S 4B1A24 frequently asked

What is Mode-S code 4B1A24?
4B1A24 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JXK.
Where is Mode-S 4B1A24 registered?
Mode-S code 4B1A24 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1A24 broadcasting right now?
Yes. Mode-S 4B1A24 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1A24, octal 22615044, decimal 4,921,892.
What flights does 4B1A24 operate?
Mode-S 4B1A24 has broadcast 20 distinct callsigns, including EZS72MD, EZS25QK, EZS78GR, EZS71RV, EZS59XA.