Apparatus

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sensors Mode-S transponder

4B1A34

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JYA · AIRBUS A-320

Hex
4B1A34
Octal
22615064
Decimal
4,921,908
Country
CH
Tail
HB-JYA
Type
A320
Broadcasting now · callsign EZS21NY · 29,675 ft
Flights observed
519
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 21:50 UTC

Current position

4B1A34 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B1A34 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
EZS14LH - 9 2026-07-10
EZS12XR - 9 2026-07-10
EZS53VN Easyjet Switzerland 8 2026-07-26
EZS51BG - 7 2026-07-03
EZS91YN - 6 2026-07-11
EZS91DA - 6 2026-07-16
EZS74RG Easyjet Switzerland 6 2026-05-16
EZS54RD Easyjet Switzerland 6 2026-05-16
EZS47HC - 6 2026-07-16
EJU51MB easyJet Europe 6 2026-06-10
EZS62KF Easyjet Switzerland 5 2026-07-23
EZS62HY Easyjet Switzerland 5 2026-07-26
EZS62GR - 5 2026-07-11
EZS51JQ - 5 2026-07-03
EZS43HQ - 5 2026-07-17
EZS34AF - 5 2026-07-17
EJU19DW easyJet Europe 5 2026-06-10
EZS86XB - 4 2026-07-16
EZS68GV - 4 2026-06-19
EZS59MQ - 4 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZS575A NCE → BSL Jul 26, 21:00 UTCJul 26, 21:50 UTC50m
2026-07-26 EZS53VN GVA → NCE Jul 26, 19:10 UTCJul 26, 19:50 UTC40m
2026-07-26 EZS75KZ TLS → GVA Jul 26, 16:25 UTCJul 26, 17:25 UTC1h 0m
2026-07-26 EZS26DT GVA → TLS Jul 26, 14:50 UTCJul 26, 15:35 UTC45m
2026-07-26 EZS59MN NCE → GVA Jul 26, 11:55 UTCJul 26, 12:35 UTC40m
2026-07-26 EZS1395 GVA → NCE Jul 26, 10:15 UTCJul 26, 10:55 UTC40m
2026-07-26 EZS48AX - Jul 26, 07:25 UTCJul 26, 09:10 UTC1h 45m
2026-07-26 EZS62HY PRG → BSL Jul 26, 04:20 UTCJul 26, 06:10 UTC1h 50m
2026-07-25 EZS76LA - Jul 25, 14:10 UTCJul 25, 21:10 UTC7h 0m
2026-07-25 EZS27QG - Jul 25, 12:10 UTCJul 25, 13:05 UTC55m
2026-07-25 EZS29UW GVA → LRH Jul 25, 10:20 UTCJul 25, 11:10 UTC50m
2026-07-25 EZS81DV - Jul 25, 07:40 UTCJul 25, 09:10 UTC1h 30m
2026-07-25 EZS12DC GVA → NBE Jul 25, 04:20 UTCJul 25, 05:40 UTC1h 20m
2026-07-24 EZS19WQ GVA → GVA Jul 24, 16:35 UTCJul 24, 21:35 UTC5h 0m
2026-07-24 EZS61RW NCE → GVA Jul 24, 14:35 UTCJul 24, 15:20 UTC45m
2026-07-24 EZS1403 GVA → AGP Jul 24, 12:30 UTCJul 24, 13:10 UTC40m
2026-07-24 EZS68CN - Jul 24, 08:15 UTCJul 24, 11:05 UTC2h 50m
2026-07-24 EZS73GL - Jul 24, 04:50 UTCJul 24, 07:20 UTC2h 30m
2026-07-23 EZS16QR EDI → GVA Jul 23, 18:40 UTCJul 23, 20:35 UTC1h 55m
2026-07-23 EZS62KF GVA → EDI Jul 23, 15:55 UTCJul 23, 17:50 UTC1h 55m
2026-07-23 EZS81ZB TBS → GVA Jul 23, 10:05 UTCJul 23, 14:50 UTC4h 45m
2026-07-23 EZS83LF GVA → TBS Jul 23, 04:40 UTCJul 23, 08:30 UTC3h 50m
2026-07-22 EZS19BN BEG → GVA Jul 22, 19:45 UTCJul 22, 21:30 UTC1h 45m
2026-07-22 EZS92DC GVA → BEG Jul 22, 17:10 UTCJul 22, 18:50 UTC1h 40m
2026-07-22 EZS1386 NCE → GVA Jul 22, 15:15 UTCJul 22, 15:55 UTC40m
2026-07-22 EZS12VL GVA → NCE Jul 22, 13:25 UTCJul 22, 14:10 UTC45m
2026-07-22 EZS45GJ GVA → AMS Jul 22, 11:35 UTCJul 22, 12:30 UTC55m
2026-07-22 EZS62HY PRG → BSL Jul 22, 04:05 UTCJul 22, 05:25 UTC1h 20m
2026-07-21 EZS81DV - Jul 21, 15:40 UTCJul 21, 17:10 UTC1h 30m
2026-07-21 EZS12DC - Jul 21, 12:30 UTCJul 21, 14:00 UTC1h 30m
2026-07-21 EZS13BL - Jul 21, 09:00 UTCJul 21, 11:10 UTC2h 10m
2026-07-21 EZS58WL - Jul 21, 05:10 UTCJul 21, 07:40 UTC2h 30m
2026-07-20 EZS41RL - Jul 20, 20:00 UTCJul 20, 21:50 UTC1h 50m
2026-07-20 EZS1489 GVA → PRN Jul 20, 17:20 UTCJul 20, 18:45 UTC1h 25m
2026-07-20 EZS81AP OLB → GVA Jul 20, 14:40 UTCJul 20, 15:45 UTC1h 5m
2026-07-20 EZS79ER - Jul 20, 12:35 UTCJul 20, 13:35 UTC1h 0m
2026-07-20 EZS58KB GVA → RAK Jul 20, 04:15 UTCJul 20, 10:50 UTC6h 35m
2026-07-19 EZS16QR EDI → GVA Jul 19, 18:30 UTCJul 19, 20:20 UTC1h 50m
2026-07-19 EZS62KF GVA → EDI Jul 19, 15:45 UTCJul 19, 17:40 UTC1h 55m
2026-07-19 EZS79FY LCA → GVA Jul 19, 10:15 UTCJul 19, 14:10 UTC3h 55m
2026-07-19 EZS32QU GVA → LCA Jul 19, 05:25 UTCJul 19, 08:40 UTC3h 15m
2026-07-18 EZS82UP - Jul 18, 19:20 UTCJul 18, 21:15 UTC1h 55m
2026-07-18 EZS19CP - Jul 18, 15:55 UTCJul 18, 17:35 UTC1h 40m
2026-07-18 EZS59GQ - Jul 18, 14:00 UTCJul 18, 15:00 UTC1h 0m
2026-07-18 EZS32GV - Jul 18, 11:55 UTCJul 18, 12:45 UTC50m
2026-07-18 EZS43RY - Jul 18, 07:50 UTCJul 18, 09:40 UTC1h 50m
2026-07-18 EZS14ZV - Jul 18, 04:20 UTCJul 18, 05:55 UTC1h 35m
2026-07-17 EZS34AF PRG → GVA Jul 17, 15:05 UTCJul 17, 16:24 UTC1h 20m
2026-07-17 EZS43HQ - Jul 17, 12:00 UTCJul 17, 13:05 UTC1h 5m
2026-07-17 EZS58CH MAN → GVA Jul 17, 08:30 UTCJul 17, 10:05 UTC1h 35m

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

Mode-S 4B1A34 frequently asked

What is Mode-S code 4B1A34?
4B1A34 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JYA.
Where is Mode-S 4B1A34 registered?
Mode-S code 4B1A34 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1A34 broadcasting right now?
Yes. Mode-S 4B1A34 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1A34, octal 22615064, decimal 4,921,908.
What flights does 4B1A34 operate?
Mode-S 4B1A34 has broadcast 20 distinct callsigns, including EZS14LH, EZS12XR, EZS53VN, EZS51BG, EZS91YN.