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sensors Mode-S transponder

4B1A1D

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JXD · AIRBUS A-320

Hex
4B1A1D
Octal
22615035
Decimal
4,921,885
Country
CH
Tail
HB-JXD
Type
A320
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
623
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 4B1A1D.

Country allocation

The ICAO 24-bit address 4B1A1D 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
EZS89GX Easyjet Switzerland 13 2026-07-21
EZS14LD Easyjet Switzerland 12 2026-07-21
EZS67UZ Easyjet Switzerland 10 2026-07-21
EZS72ZY - 9 2026-07-19
EZS29ZA Easyjet Switzerland 9 2026-07-21
EZS45MR - 8 2026-07-19
EZS59MQ Easyjet Switzerland 6 2026-06-12
EZS23YH Easyjet Switzerland 6 2026-06-12
EJU43TE easyJet Europe 6 2026-06-06
EJU42GT easyJet Europe 6 2026-06-06
EZS82EN Easyjet Switzerland 5 2026-06-09
EZS62TJ Easyjet Switzerland 5 2026-06-13
EZS54KG - 5 2026-07-16
EZS41MA Easyjet Switzerland 5 2026-06-13
EZS36FD Easyjet Switzerland 5 2026-06-09
EZS35JU Easyjet Switzerland 5 2026-06-10
EZS27FR Easyjet Switzerland 5 2026-06-10
EZS19BN - 5 2026-07-26
EJU53LX - 5 2026-06-13
EZS91PX Easyjet Switzerland 4 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZS91PX CPH → GVA Jul 26, 19:45 UTCJul 26, 21:15 UTC1h 30m
2026-07-26 EZS41MU GVA → CPH Jul 26, 17:05 UTCJul 26, 18:50 UTC1h 45m
2026-07-26 EZS19BN BEG → GVA Jul 26, 14:25 UTCJul 26, 16:10 UTC1h 45m
2026-07-26 EZS92DC GVA → BEG Jul 26, 11:50 UTCJul 26, 13:20 UTC1h 30m
2026-07-26 EZS73NK TIA → GVA Jul 26, 09:00 UTCJul 26, 10:35 UTC1h 35m
2026-07-26 EZS31WH - Jul 26, 05:40 UTCJul 26, 07:00 UTC1h 21m
2026-07-25 EZS81AP OLB → GVA Jul 25, 20:40 UTCJul 25, 21:50 UTC1h 10m
2026-07-25 EZS48DR - Jul 25, 17:30 UTCJul 25, 18:35 UTC1h 5m
2026-07-25 EZS26WZ - Jul 25, 15:25 UTCJul 25, 16:35 UTC1h 10m
2026-07-25 EZS16RV BSL → SPU Jul 25, 12:50 UTCJul 25, 13:55 UTC1h 5m
2026-07-25 EZS1082 BIA → BSL Jul 25, 10:55 UTCJul 25, 11:55 UTC1h 0m
2026-07-25 EZS389K BSL → BIA Jul 25, 08:50 UTCJul 25, 09:40 UTC50m
2026-07-25 EZS78RY SPU → BSL Jul 25, 06:50 UTCJul 25, 08:00 UTC1h 10m
2026-07-25 EZS69AF BSL → SPU Jul 25, 04:15 UTCJul 25, 05:20 UTC1h 5m
2026-07-24 EZS64DZ KRK → BSL Jul 24, 19:05 UTCJul 24, 20:35 UTC1h 30m
2026-07-24 EZS52NT BSL → KRK Jul 24, 16:50 UTCJul 24, 18:15 UTC1h 25m
2026-07-24 EZS47VV - Jul 24, 13:50 UTCJul 24, 15:45 UTC1h 55m
2026-07-24 EZS57GP - Jul 24, 11:00 UTCJul 24, 12:35 UTC1h 35m
2026-07-24 EZS32UK PRN → BSL Jul 24, 08:15 UTCJul 24, 10:05 UTC1h 50m
2026-07-24 EZS23QB BSL → PRN Jul 24, 05:20 UTCJul 24, 06:50 UTC1h 30m
2026-07-23 EJU91EY BOD → LIS Jul 23, 17:35 UTCJul 23, 19:00 UTC1h 25m
2026-07-23 EJU7108 GVA → BCN Jul 23, 15:10 UTCJul 23, 16:20 UTC1h 10m
2026-07-23 EJU13UC BCN → GVA Jul 23, 12:45 UTCJul 23, 14:00 UTC1h 15m
2026-07-23 EJU58UD LGW → BCN Jul 23, 09:05 UTCJul 23, 10:40 UTC1h 35m
2026-07-23 EJU67BR CDG → MAN Jul 23, 05:50 UTCJul 23, 08:05 UTC2h 15m
2026-07-22 EJU47PT AMS → STN Jul 22, 19:45 UTCJul 22, 20:50 UTC1h 5m
2026-07-22 EJU79UM BCN → GVA Jul 22, 17:35 UTCJul 22, 18:50 UTC1h 15m
2026-07-22 EJU84KR - Jul 22, 14:50 UTCJul 22, 16:20 UTC1h 30m
2026-07-22 EJU12ZF IBZ → AMS Jul 22, 12:30 UTCJul 22, 13:40 UTC1h 10m
2026-07-22 EJU58UD LGW → BCN Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-22 EJU9073 BER → ORY Jul 22, 04:20 UTCJul 22, 05:25 UTC1h 5m
2026-07-21 EZS67UZ PRN → BSL Jul 21, 21:00 UTCJul 21, 23:40 UTC2h 40m
2026-07-21 EZS14LD ZRH → PRN Jul 21, 18:30 UTCJul 21, 19:50 UTC1h 20m
2026-07-21 EZS89GX PRN → ZRH Jul 21, 14:00 UTCJul 21, 15:45 UTC1h 45m
2026-07-21 EZS29ZA BSL → PRN Jul 21, 11:05 UTCJul 21, 12:30 UTC1h 25m
2026-07-21 EZS51CE - Jul 21, 08:15 UTCJul 21, 09:35 UTC1h 20m
2026-07-21 EZS91JX BSL → CAG Jul 21, 05:20 UTCJul 21, 06:35 UTC1h 15m
2026-07-20 EZS64LP - Jul 20, 18:00 UTCJul 20, 20:35 UTC2h 35m
2026-07-20 EZS34KT - Jul 20, 13:50 UTCJul 20, 16:55 UTC3h 5m
2026-07-20 EZS498Q - Jul 20, 11:05 UTCJul 20, 11:55 UTC50m
2026-07-20 EZS351Y - Jul 20, 09:20 UTCJul 20, 10:15 UTC55m
2026-07-20 EZS98RM BUD → BSL Jul 20, 06:50 UTCJul 20, 08:25 UTC1h 35m
2026-07-20 EZS74KY BSL → BUD Jul 20, 04:30 UTCJul 20, 05:50 UTC1h 20m
2026-07-19 EZS45MR - Jul 19, 19:35 UTCJul 19, 21:20 UTC1h 45m
2026-07-19 EZS14LD ZRH → PRN Jul 19, 17:10 UTCJul 19, 18:35 UTC1h 25m
2026-07-19 EZS89GX PRN → ZRH Jul 19, 13:25 UTCJul 19, 15:15 UTC1h 50m
2026-07-19 EZS29ZA BSL → PRN Jul 19, 10:50 UTCJul 19, 12:15 UTC1h 25m
2026-07-19 EZS67UZ PRN → BSL Jul 19, 07:45 UTCJul 19, 09:35 UTC1h 50m
2026-07-19 EZS72ZY - Jul 19, 04:40 UTCJul 19, 06:10 UTC1h 30m
2026-07-18 EZS65PB AYT → BSL Jul 18, 20:00 UTCJul 18, 23:00 UTC3h 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-JXD page for operator, model, and routing details .

Mode-S 4B1A1D frequently asked

What is Mode-S code 4B1A1D?
4B1A1D is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JXD.
Where is Mode-S 4B1A1D registered?
Mode-S code 4B1A1D is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1A1D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1A1D, octal 22615035, decimal 4,921,885.
What flights does 4B1A1D operate?
Mode-S 4B1A1D has broadcast 20 distinct callsigns, including EZS89GX, EZS14LD, EZS67UZ, EZS72ZY, EZS29ZA.