Apparatus

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sensors Mode-S transponder

4B1A2C

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JXS · AIRBUS A-320

Hex
4B1A2C
Octal
22615054
Decimal
4,921,900
Country
CH
Tail
HB-JXS
Type
A320
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
568
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S 4B1A2C.

Country allocation

The ICAO 24-bit address 4B1A2C 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
EZS83JY Easyjet Switzerland 6 2026-06-18
EZS81ZB - 6 2026-04-16
EZS18GT Easyjet Switzerland 6 2026-06-18
EZS91PX Easyjet Switzerland 5 2026-06-15
EZS86XB Easyjet Switzerland 5 2026-06-11
EZS83LF Easyjet Switzerland 5 2026-04-16
EZS753A Easyjet Switzerland 5 2026-07-26
EZS73RT Easyjet Switzerland 5 2026-05-12
EZS68GV Easyjet Switzerland 5 2026-06-06
EZS52CP Easyjet Switzerland 5 2026-06-11
EZS46MW Easyjet Switzerland 5 2026-06-03
EZS41MU Easyjet Switzerland 5 2026-06-15
EZS349U Easyjet Switzerland 5 2026-07-26
EZS31WH - 5 2026-06-20
EZS31QP Easyjet Switzerland 5 2026-06-06
EZS25BW - 5 2026-06-19
EZS19WQ Easyjet Switzerland 5 2026-05-12
EZS13BL - 5 2026-05-22
EZS12XR - 5 2026-06-22
EJU87RL - 5 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZS19HP OLB → BSL Jul 26, 20:30 UTCJul 26, 21:35 UTC1h 5m
2026-07-26 EZS48DR BSL → OLB Jul 26, 18:15 UTCJul 26, 19:20 UTC1h 5m
2026-07-26 EZS349U BOD → BSL Jul 26, 16:15 UTCJul 26, 17:30 UTC1h 15m
2026-07-26 EZS753A BSL → BOD Jul 26, 14:00 UTCJul 26, 15:00 UTC1h 0m
2026-07-26 EZS1278 NBE → BSL Jul 26, 11:25 UTCJul 26, 13:05 UTC1h 40m
2026-07-26 EZS26LA BSL → NBE Jul 26, 07:10 UTCJul 26, 09:05 UTC1h 55m
2026-07-25 EZS28MN BSL → LPA Jul 25, 20:10 UTCJul 26, 04:50 UTC8h 40m
2026-07-25 EZS51CE CAG → BSL Jul 25, 16:35 UTCJul 25, 18:00 UTC1h 25m
2026-07-25 EZS91JX BSL → CAG Jul 25, 14:20 UTCJul 25, 15:30 UTC1h 10m
2026-07-25 EZS71UA RMI → BSL Jul 25, 12:20 UTCJul 25, 13:25 UTC1h 5m
2026-07-25 EZS94WL BSL → RMI Jul 25, 10:35 UTCJul 25, 11:25 UTC50m
2026-07-25 EJU85DP IBZ → BSL Jul 25, 08:00 UTCJul 25, 09:35 UTC1h 35m
2026-07-25 EJU85HR BSL → IBZ Jul 25, 04:40 UTCJul 25, 06:20 UTC1h 40m
2026-07-24 EZS64QE PMO → BSL Jul 24, 15:25 UTCJul 24, 17:05 UTC1h 40m
2026-07-24 EZS27BL BSL → PMO Jul 24, 12:30 UTCJul 24, 14:00 UTC1h 30m
2026-07-24 EZS64LP RAK → BSL Jul 24, 08:20 UTCJul 24, 11:20 UTC3h 0m
2026-07-24 EZS34KT BSL → RAK Jul 24, 04:20 UTCJul 24, 07:05 UTC2h 45m
2026-07-23 EZS34PY CPH → BSL Jul 23, 19:15 UTCJul 23, 20:30 UTC1h 15m
2026-07-23 EZS73TU BSL → CPH Jul 23, 16:55 UTCJul 23, 18:30 UTC1h 35m
2026-07-23 EZS26WZ - Jul 23, 14:50 UTCJul 23, 16:00 UTC1h 10m
2026-07-23 EZS16RV BSL → SPU Jul 23, 12:30 UTCJul 23, 13:35 UTC1h 5m
2026-07-23 EZS34KT BSL → RAK Jul 23, 04:25 UTCJul 23, 11:40 UTC7h 15m
2026-07-22 EZS26WZ - Jul 22, 20:15 UTCJul 22, 21:30 UTC1h 15m
2026-07-22 EZS16RV BSL → SPU Jul 22, 18:05 UTCJul 22, 19:05 UTC1h 0m
2026-07-22 EZS349U BOD → BSL Jul 22, 15:50 UTCJul 22, 17:15 UTC1h 25m
2026-07-22 EZS753A BSL → BOD Jul 22, 13:50 UTCJul 22, 15:05 UTC1h 15m
2026-07-22 EZS32PC - Jul 22, 11:40 UTCJul 22, 12:55 UTC1h 15m
2026-07-22 EZS598Z BSL → NTE Jul 22, 04:20 UTCJul 22, 05:25 UTC1h 5m
2026-07-21 EZS51TE HAM → BSL Jul 21, 19:55 UTCJul 21, 20:55 UTC1h 0m
2026-07-21 EZS82KM BSL → HAM Jul 21, 17:50 UTCJul 21, 19:00 UTC1h 10m
2026-07-21 EZS64QE PMO → BSL Jul 21, 15:25 UTCJul 21, 16:55 UTC1h 30m
2026-07-21 EZS27BL BSL → PMO Jul 21, 12:25 UTCJul 21, 14:10 UTC1h 45m
2026-07-21 EZS34KT BSL → RAK Jul 21, 04:10 UTCJul 21, 11:20 UTC7h 10m
2026-07-20 EJU38WN ALC → BSL Jul 20, 23:40 UTCJul 20, 23:55 UTC15m
2026-07-20 EJU38WN ALC → BSL Jul 20, 19:30 UTCJul 20, 21:15 UTC1h 45m
2026-07-20 EJU67KU BSL → ALC Jul 20, 16:30 UTCJul 20, 18:30 UTC2h 0m
2026-07-20 EZS65KL EDI → BSL Jul 20, 13:00 UTCJul 20, 14:45 UTC1h 45m
2026-07-20 EZS1231 BSL → EDI Jul 20, 10:05 UTCJul 20, 11:55 UTC1h 50m
2026-07-20 EZS952B TLS → BSL Jul 20, 08:00 UTCJul 20, 09:00 UTC1h 0m
2026-07-20 EZS473H BSL → TLS Jul 20, 05:35 UTCJul 20, 06:40 UTC1h 5m
2026-07-19 EZS19HP OLB → BSL Jul 19, 20:20 UTCJul 19, 21:25 UTC1h 5m
2026-07-19 EZS48DR - Jul 19, 17:40 UTCJul 19, 18:50 UTC1h 10m
2026-07-19 EZS349U BOD → BSL Jul 19, 15:30 UTCJul 19, 16:50 UTC1h 20m
2026-07-19 EZS753A BSL → BOD Jul 19, 13:05 UTCJul 19, 14:20 UTC1h 15m
2026-07-19 EZS1278 - Jul 19, 10:25 UTCJul 19, 12:00 UTC1h 35m
2026-07-19 EZS26LA - Jul 19, 07:20 UTCJul 19, 08:55 UTC1h 35m
2026-07-19 EZS1062 LPA → BSL Jul 19, 00:35 UTCJul 19, 03:45 UTC3h 10m
2026-07-18 EZS28MN - Jul 18, 19:00 UTCJul 18, 22:50 UTC3h 50m
2026-07-18 EZS372F - Jul 18, 11:45 UTCJul 18, 13:00 UTC1h 15m
2026-07-18 EZS295B BSL → BIQ Jul 18, 09:25 UTCJul 18, 10:45 UTC1h 20m

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

Mode-S 4B1A2C frequently asked

What is Mode-S code 4B1A2C?
4B1A2C is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JXS.
Where is Mode-S 4B1A2C registered?
Mode-S code 4B1A2C is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1A2C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1A2C, octal 22615054, decimal 4,921,900.
What flights does 4B1A2C operate?
Mode-S 4B1A2C has broadcast 20 distinct callsigns, including EZS83JY, EZS81ZB, EZS18GT, EZS91PX, EZS86XB.