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 EJU19DW · 30,000 ft
Flights observed
201
Distinct callsigns
20
Country
CH
Last broadcast
1h ago

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
EZS74RG Easyjet Switzerland 6 2026-05-16
EZS54RD Easyjet Switzerland 6 2026-05-16
EZS14LH - 5 2026-05-14
EZS12XR Easyjet Switzerland 5 2026-05-14
EZS53VN Easyjet Switzerland 4 2026-05-22
EZS51BG Easyjet Switzerland 4 2026-05-22
EZS72MD Easyjet Switzerland 3 2026-05-19
EZS68GV Easyjet Switzerland 3 2026-05-15
EZS51JQ Easyjet Switzerland 3 2026-05-11
EZS45RN Easyjet Switzerland 3 2026-05-21
EZS31QP Easyjet Switzerland 3 2026-05-15
EZS25QK Easyjet Switzerland 3 2026-05-19
EZS98DF Easyjet Switzerland 2 2026-05-29
EZS91YN - 2 2026-05-24
EZS85RK Easyjet Switzerland 2 2026-05-04
EZS83LF Easyjet Switzerland 2 2026-05-07
EZS82EN Easyjet Switzerland 2 2026-05-22
EZS81ZH Easyjet Switzerland 2 2026-05-10
EZS81ZB Easyjet Switzerland 2 2026-05-07
EZS79YP Easyjet Switzerland 2 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 EJU19DW TFS → BSL May 30, 17:05 UTCMay 30, 19:00 UTC1h 55m
2026-05-30 EJU51MB BSL → TFS May 30, 11:45 UTCMay 30, 15:30 UTC3h 45m
2026-05-29 EZS72LT VLC → BSL May 29, 14:30 UTCMay 29, 16:25 UTC1h 55m
2026-05-29 EZS98DF BSL → VLC May 29, 11:30 UTCMay 29, 13:05 UTC1h 35m
2026-05-29 EZS23HQ CTA → BSL May 29, 08:00 UTCMay 29, 09:55 UTC1h 55m
2026-05-29 EZS85YX BSL → CTA May 29, 04:50 UTCMay 29, 06:35 UTC1h 45m
2026-05-28 EZS51TE HAM → BSL May 28, 19:40 UTCMay 28, 20:45 UTC1h 5m
2026-05-28 EZS82KM BSL → HAM May 28, 17:45 UTCMay 28, 18:55 UTC1h 10m
2026-05-28 EZS45MR PRN → BSL May 28, 15:15 UTCMay 28, 16:55 UTC1h 40m
2026-05-28 EZS72ZY BSL → PRN May 28, 12:25 UTCMay 28, 14:00 UTC1h 35m
2026-05-28 EZS74ZT RHO → BSL May 28, 08:10 UTCMay 28, 11:10 UTC3h 0m
2026-05-28 EZS17VT BSL → RHO May 28, 04:20 UTCMay 28, 07:00 UTC2h 40m
2026-05-27 EJU19DW TFS → BSL May 27, 16:30 UTCMay 27, 20:25 UTC3h 55m
2026-05-27 EJU51MB BSL → TFS May 27, 11:15 UTCMay 27, 15:15 UTC4h 0m
2026-05-27 EZS1278 NBE → BSL May 27, 08:05 UTCMay 27, 09:50 UTC1h 45m
2026-05-27 EZS26LA BSL → NBE May 27, 05:04 UTCMay 27, 06:40 UTC1h 35m
2026-05-26 EZS64DZ KRK → BSL May 26, 18:55 UTCMay 26, 20:20 UTC1h 25m
2026-05-26 EZS52NT BSL → KRK May 26, 16:40 UTCMay 26, 18:05 UTC1h 25m
2026-05-26 EZS65UJ HRG → BSL May 26, 05:15 UTCMay 26, 15:00 UTC9h 45m
2026-05-25 EJU38WN ALC → BSL May 25, 19:10 UTCMay 25, 21:04 UTC1h 55m
2026-05-25 EJU67KU BSL → ALC May 25, 16:05 UTCMay 25, 17:55 UTC1h 50m
2026-05-25 EZS65KL EDI → BSL May 25, 13:20 UTCMay 25, 15:05 UTC1h 45m
2026-05-25 EZS1231 BSL → EDI May 25, 09:55 UTCMay 25, 11:40 UTC1h 45m
2026-05-25 EZS34PY CPH → BSL May 25, 07:45 UTCMay 25, 09:05 UTC1h 20m
2026-05-25 EZS73TU BSL → CPH May 25, 05:10 UTCMay 25, 06:40 UTC1h 30m
2026-05-24 EZS1278 NBE → BSL May 24, 18:55 UTCMay 24, 20:25 UTC1h 30m
2026-05-24 EZS26LA BSL → NBE May 24, 15:30 UTCMay 24, 17:05 UTC1h 35m
2026-05-24 EZS72LT VLC → BSL May 24, 12:30 UTCMay 24, 14:20 UTC1h 50m
2026-05-24 EZS98DF BSL → VLC May 24, 09:50 UTCMay 24, 11:25 UTC1h 35m
2026-05-24 EZS32PC OLB → BSL May 24, 07:45 UTCMay 24, 08:55 UTC1h 10m
2026-05-24 EZS91YN - May 24, 05:10 UTCMay 24, 06:10 UTC1h 0m
2026-05-23 EZS68CN - May 23, 16:55 UTCMay 23, 19:35 UTC2h 40m
2026-05-23 EZS73GL - May 23, 13:15 UTCMay 23, 15:50 UTC2h 35m
2026-05-23 EZS52HV GVA → RAK May 23, 05:05 UTCMay 23, 11:50 UTC6h 45m
2026-05-22 EZS51BG NCE → GVA May 22, 21:00 UTCMay 22, 21:40 UTC40m
2026-05-22 EZS53VN GVA → NCE May 22, 18:50 UTCMay 22, 19:45 UTC55m
2026-05-22 EZS36FD PMO → GVA May 22, 16:05 UTCMay 22, 17:50 UTC1h 45m
2026-05-22 EZS82EN GVA → PMO May 22, 13:40 UTCMay 22, 15:00 UTC1h 20m
2026-05-22 EZS43JB RHO → GVA May 22, 09:10 UTCMay 22, 12:10 UTC3h 0m
2026-05-22 EZS62AV GVA → RHO May 22, 04:50 UTCMay 22, 07:50 UTC3h 0m
2026-05-21 EZS13DG FAO → GVA May 21, 18:55 UTCMay 21, 21:00 UTC2h 5m
2026-05-21 EZS57GC - May 21, 15:40 UTCMay 21, 18:00 UTC2h 20m
2026-05-21 EZS78KW FNC → GVA May 21, 09:45 UTCMay 21, 12:50 UTC3h 5m
2026-05-21 EZS45RN GVA → FNC May 21, 08:25 UTCMay 21, 08:35 UTC10m
2026-05-21 EZS45RN GVA → FNC May 21, 05:10 UTCMay 21, 07:45 UTC2h 35m
2026-05-20 EZS67AR RAK → GVA May 20, 13:15 UTCMay 20, 20:05 UTC6h 50m
2026-05-19 EZS24DN LIS → GVA May 19, 14:30 UTCMay 19, 16:40 UTC2h 10m
2026-05-19 EZS1465 GVA → LIS May 19, 10:25 UTCMay 19, 13:00 UTC2h 35m
2026-05-19 EZS72MD OPO → GVA May 19, 07:10 UTCMay 19, 09:05 UTC1h 55m
2026-05-19 EZS25QK GVA → OPO May 19, 04:10 UTCMay 19, 06:10 UTC2h 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-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 EZS74RG, EZS54RD, EZS14LH, EZS12XR, EZS53VN.