Apparatus

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sensors Mode-S transponder

4B1A2D

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JXT · AIRBUS A-320

Hex
4B1A2D
Octal
22615055
Decimal
4,921,901
Country
CH
Tail
HB-JXT
Type
A320
No current signal · last broadcast Jul 26, 19:40 UTC
Flights observed
523
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 19:40 UTC

Last known position

Most recent position reported by Mode-S 4B1A2D.

Country allocation

The ICAO 24-bit address 4B1A2D 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
EZS64DZ Easyjet Switzerland 7 2026-06-19
EZS78GR Easyjet Switzerland 6 2026-07-24
EZS62KF - 6 2026-07-15
EZS52NT Easyjet Switzerland 6 2026-06-19
EZS16QR - 6 2026-07-15
EZS14EZ - 6 2026-07-24
EJU51MB easyJet Europe 6 2026-06-11
EJU19DW easyJet Europe 6 2026-06-11
EZS85YX Easyjet Switzerland 5 2026-06-19
EZS84LU Easyjet Switzerland 5 2026-07-18
EZS72QV Easyjet Switzerland 5 2026-07-24
EZS59MN - 5 2026-07-13
EZS47XZ - 5 2026-07-24
EZS23HQ Easyjet Switzerland 5 2026-06-19
EZS1395 - 5 2026-07-13
EZS83YJ - 4 2026-07-17
EZS83LF - 4 2026-07-09
EZS83JY - 4 2026-07-19
EZS81ZB - 4 2026-07-09
EZS75NE - 4 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EJU73ZQ GVA → PMI Jul 26, 18:35 UTCJul 26, 19:40 UTC1h 5m
2026-07-26 EZS42JW LGW → GVA Jul 26, 16:15 UTCJul 26, 17:20 UTC1h 5m
2026-07-26 EZS72YG - Jul 26, 13:40 UTCJul 26, 15:00 UTC1h 20m
2026-07-26 EZS67AR RAK → GVA Jul 26, 08:50 UTCJul 26, 11:25 UTC2h 35m
2026-07-26 EZS58KB GVA → RAK Jul 26, 04:50 UTCJul 26, 07:20 UTC2h 31m
2026-07-25 EZS13DG FAO → GVA Jul 25, 17:00 UTCJul 25, 19:00 UTC2h 0m
2026-07-25 EZS57GC - Jul 25, 13:40 UTCJul 25, 16:00 UTC2h 20m
2026-07-25 EZS45GJ GVA → AMS Jul 25, 11:50 UTCJul 25, 12:50 UTC1h 0m
2026-07-25 EZS49KR GVA → BIA Jul 25, 09:55 UTCJul 25, 10:40 UTC45m
2026-07-25 EZS83TQ - Jul 25, 07:30 UTCJul 25, 08:50 UTC1h 20m
2026-07-25 EZS58ZV - Jul 25, 05:00 UTCJul 25, 06:05 UTC1h 5m
2026-07-24 EZS51BG NCE → GVA Jul 24, 21:10 UTCJul 24, 21:45 UTC35m
2026-07-24 EZS53VN - Jul 24, 19:35 UTCJul 24, 20:25 UTC50m
2026-07-24 EZS78GR VLC → GVA Jul 24, 16:55 UTCJul 24, 18:35 UTC1h 40m
2026-07-24 EZS14EZ GVA → VLC Jul 24, 14:20 UTCJul 24, 15:55 UTC1h 35m
2026-07-24 EZS47XZ - Jul 24, 12:15 UTCJul 24, 13:15 UTC1h 0m
2026-07-24 EZS72QV GVA → FSC Jul 24, 09:40 UTCJul 24, 10:40 UTC1h 0m
2026-07-24 EJU87RL IBZ → GVA Jul 24, 06:35 UTCJul 24, 08:10 UTC1h 35m
2026-07-24 EJU85KQ OPO → BSL Jul 24, 04:15 UTCJul 24, 05:35 UTC1h 20m
2026-07-23 EZS52CP - Jul 23, 18:35 UTCJul 23, 21:35 UTC3h 0m
2026-07-23 EZS86XB GVA → HER Jul 23, 14:55 UTCJul 23, 17:20 UTC2h 25m
2026-07-23 EZS87ML SUF → GVA Jul 23, 12:00 UTCJul 23, 13:50 UTC1h 50m
2026-07-23 EZS1435 - Jul 23, 09:00 UTCJul 23, 10:35 UTC1h 35m
2026-07-23 EZS1386 NCE → GVA Jul 23, 07:15 UTCJul 23, 08:05 UTC50m
2026-07-23 EZS12VL GVA → NCE Jul 23, 05:20 UTCJul 23, 06:05 UTC45m
2026-07-22 EJU79CA IBZ → GVA Jul 22, 19:40 UTCJul 22, 21:10 UTC1h 30m
2026-07-22 EJU85QE GVA → IBZ Jul 22, 17:15 UTCJul 22, 18:50 UTC1h 35m
2026-07-22 EZS98NZ MAH → GVA Jul 22, 14:55 UTCJul 22, 16:05 UTC1h 10m
2026-07-22 EZS81FQ GVA → MAH Jul 22, 12:45 UTCJul 22, 13:55 UTC1h 10m
2026-07-22 EZS13BL - Jul 22, 05:10 UTCJul 22, 11:40 UTC6h 30m
2026-07-21 EZS73RT PRN → GVA Jul 21, 19:20 UTCJul 21, 21:20 UTC2h 0m
2026-07-21 EZS19WQ - Jul 21, 16:30 UTCJul 21, 18:05 UTC1h 35m
2026-07-21 EZS36FD PMO → GVA Jul 21, 13:05 UTCJul 21, 14:45 UTC1h 40m
2026-07-21 EZS82EN GVA → PMO Jul 21, 10:30 UTCJul 21, 11:55 UTC1h 25m
2026-07-21 EZS1534 - Jul 21, 07:55 UTCJul 21, 09:15 UTC1h 20m
2026-07-21 EZS1533 GVA → CAG Jul 21, 05:20 UTCJul 21, 06:25 UTC1h 5m
2026-07-20 EZS51BG NCE → GVA Jul 20, 20:00 UTCJul 20, 20:40 UTC40m
2026-07-20 EZS53VN - Jul 20, 18:25 UTCJul 20, 19:10 UTC45m
2026-07-20 EZS83TQ - Jul 20, 16:10 UTCJul 20, 17:25 UTC1h 15m
2026-07-20 EZS58ZV - Jul 20, 13:30 UTCJul 20, 14:40 UTC1h 10m
2026-07-20 EZS1362 - Jul 20, 11:35 UTCJul 20, 12:30 UTC55m
2026-07-20 EZS78JM - Jul 20, 09:30 UTCJul 20, 10:45 UTC1h 15m
2026-07-20 EJU87RL IBZ → GVA Jul 20, 06:50 UTCJul 20, 08:25 UTC1h 35m
2026-07-20 EJU85KQ OPO → BSL Jul 20, 04:15 UTCJul 20, 05:40 UTC1h 25m
2026-07-19 EZS18GT BUD → GVA Jul 19, 19:00 UTCJul 19, 20:45 UTC1h 45m
2026-07-19 EZS83JY GVA → BUD Jul 19, 16:40 UTCJul 19, 18:00 UTC1h 20m
2026-07-19 EZS54RD OPO → GVA Jul 19, 13:30 UTCJul 19, 15:15 UTC1h 45m
2026-07-19 EZS74RG GVA → OPO Jul 19, 10:45 UTCJul 19, 12:45 UTC2h 0m
2026-07-19 EJU17TF SVQ → GVA Jul 19, 07:20 UTCJul 19, 09:15 UTC1h 55m
2026-07-19 EJU91PC GVA → SVQ Jul 19, 04:25 UTCJul 19, 06:30 UTC2h 5m

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

Mode-S 4B1A2D frequently asked

What is Mode-S code 4B1A2D?
4B1A2D is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JXT.
Where is Mode-S 4B1A2D registered?
Mode-S code 4B1A2D is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1A2D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1A2D, octal 22615055, decimal 4,921,901.
What flights does 4B1A2D operate?
Mode-S 4B1A2D has broadcast 20 distinct callsigns, including EZS64DZ, EZS78GR, EZS62KF, EZS52NT, EZS16QR.