Apparatus

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sensors Mode-S transponder

4B1A2E

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JXU · AIRBUS A-320

Hex
4B1A2E
Octal
22615056
Decimal
4,921,902
Country
CH
Tail
HB-JXU
Type
A320
Broadcasting now · callsign EZS48HL · 37,000 ft
Flights observed
608
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 21:30 UTC

Current position

4B1A2E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B1A2E 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
EJU92KW easyJet Europe 9 2026-05-18
EJU31ZN easyJet Europe 9 2026-05-18
EJU96KT - 7 2026-05-14
EJU82PN - 7 2026-07-15
EJU529H - 7 2026-05-18
EJU412C - 7 2026-05-18
EZS85YX Easyjet Switzerland 5 2026-07-21
EZS72MD - 5 2026-07-13
EZS32PC Easyjet Switzerland 5 2026-07-26
EZS23HQ Easyjet Switzerland 5 2026-07-21
EZS21MA Easyjet Switzerland 5 2026-07-26
EJU85TQ - 5 2026-05-09
EJU738J easyJet Europe 5 2026-05-17
EJU63KL easyJet Europe 5 2026-05-14
EJU572R easyJet Europe 5 2026-05-18
EJU52WT - 5 2026-07-15
EJU351H easyJet Europe 5 2026-05-17
EJU169Y easyJet Europe 5 2026-05-18
EZS89PM Easyjet Switzerland 4 2026-07-17
EZS62HY - 4 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZS51TE HAM → BSL Jul 26, 20:25 UTCJul 26, 21:25 UTC1h 0m
2026-07-26 EZS82KM BSL → HAM Jul 26, 18:30 UTCJul 26, 19:40 UTC1h 10m
2026-07-26 EZS41BP - Jul 26, 14:45 UTCJul 26, 17:40 UTC2h 55m
2026-07-26 EZS82AW BSL → CHQ Jul 26, 10:45 UTCJul 26, 13:10 UTC2h 25m
2026-07-26 EZS32PC OLB → BSL Jul 26, 06:35 UTCJul 26, 07:50 UTC1h 15m
2026-07-26 EZS21MA BSL → OLB Jul 26, 04:15 UTCJul 26, 05:15 UTC1h 0m
2026-07-25 EZS315H BIA → BSL Jul 25, 19:15 UTCJul 25, 20:15 UTC1h 0m
2026-07-25 EZS453Z BSL → BIA Jul 25, 17:25 UTCJul 25, 18:15 UTC50m
2026-07-25 EZS67UZ PRN → BSL Jul 25, 12:15 UTCJul 25, 16:30 UTC4h 15m
2026-07-25 EZS89GX PRN → ZRH Jul 25, 09:20 UTCJul 25, 10:45 UTC1h 25m
2026-07-25 EZS29ZA BSL → PRN Jul 25, 06:00 UTCJul 25, 07:30 UTC1h 30m
2026-07-24 EZS67UZ PRN → BSL Jul 24, 17:00 UTCJul 24, 21:25 UTC4h 25m
2026-07-24 EZS89GX PRN → ZRH Jul 24, 13:35 UTCJul 24, 15:30 UTC1h 55m
2026-07-24 EZS29ZA BSL → PRN Jul 24, 10:55 UTCJul 24, 12:20 UTC1h 25m
2026-07-24 EZS51CE CAG → BSL Jul 24, 08:15 UTCJul 24, 09:55 UTC1h 40m
2026-07-24 EZS91JX BSL → CAG Jul 24, 05:40 UTCJul 24, 07:00 UTC1h 20m
2026-07-23 EZS19HP OLB → BSL Jul 23, 20:05 UTCJul 23, 21:20 UTC1h 15m
2026-07-23 EZS21NY ZRH → OLB Jul 23, 17:45 UTCJul 23, 18:40 UTC55m
2026-07-23 EZS65PD OLB → ZRH Jul 23, 15:30 UTCJul 23, 16:40 UTC1h 10m
2026-07-23 EZS48DR - Jul 23, 13:15 UTCJul 23, 14:25 UTC1h 10m
2026-07-23 EZS87KU - Jul 23, 10:55 UTCJul 23, 12:15 UTC1h 20m
2026-07-23 EZS61NC BSL → ZAD Jul 23, 09:00 UTCJul 23, 09:50 UTC50m
2026-07-23 EZS32PC OLB → BSL Jul 23, 06:40 UTCJul 23, 07:55 UTC1h 15m
2026-07-23 EZS21MA BSL → OLB Jul 23, 04:15 UTCJul 23, 05:10 UTC55m
2026-07-22 EZS34PY CPH → BSL Jul 22, 18:55 UTCJul 22, 20:15 UTC1h 20m
2026-07-22 EZS73TU BSL → CPH Jul 22, 16:20 UTCJul 22, 17:50 UTC1h 30m
2026-07-22 EZS28NQ NAP → BSL Jul 22, 13:55 UTCJul 22, 15:20 UTC1h 25m
2026-07-22 EZS83UF BSL → NAP Jul 22, 11:30 UTCJul 22, 12:45 UTC1h 15m
2026-07-22 EJU49VB - Jul 22, 05:10 UTCJul 22, 05:25 UTC15m
2026-07-21 EZS23HQ CTA → BSL Jul 21, 19:10 UTCJul 21, 21:00 UTC1h 50m
2026-07-21 EZS85YX BSL → CTA Jul 21, 16:15 UTCJul 21, 18:00 UTC1h 45m
2026-07-21 EZS98RM BUD → BSL Jul 21, 12:40 UTCJul 21, 14:10 UTC1h 30m
2026-07-21 EZS74KY BSL → BUD Jul 21, 10:25 UTCJul 21, 11:40 UTC1h 15m
2026-07-21 EZS95WH BIO → BSL Jul 21, 08:10 UTCJul 21, 10:15 UTC2h 5m
2026-07-21 EZS1065 BSL → BIO Jul 21, 05:20 UTCJul 21, 06:45 UTC1h 25m
2026-07-20 EZS23HQ CTA → BSL Jul 20, 18:40 UTCJul 20, 20:35 UTC1h 55m
2026-07-20 EZS85YX BSL → CTA Jul 20, 15:55 UTCJul 20, 17:35 UTC1h 40m
2026-07-20 EJU36DT - Jul 20, 13:00 UTCJul 20, 15:00 UTC2h 0m
2026-07-20 EJU49VB - Jul 20, 10:00 UTCJul 20, 12:10 UTC2h 10m
2026-07-20 EJU54LH MAD → BSL Jul 20, 07:10 UTCJul 20, 08:45 UTC1h 35m
2026-07-20 EJU16BQ BSL → MAD Jul 20, 04:10 UTCJul 20, 05:55 UTC1h 45m
2026-07-19 EZS64DZ KRK → BSL Jul 19, 19:45 UTCJul 19, 21:30 UTC1h 45m
2026-07-19 EZS52NT BSL → KRK Jul 19, 17:20 UTCJul 19, 18:40 UTC1h 20m
2026-07-19 EZS58YX - Jul 19, 15:15 UTCJul 19, 16:30 UTC1h 15m
2026-07-19 EZS31JB BSL → FCO Jul 19, 13:05 UTCJul 19, 14:10 UTC1h 5m
2026-07-19 EZS47BN LGW → BSL Jul 19, 10:50 UTCJul 19, 12:00 UTC1h 10m
2026-07-19 EZS8478 BSL → LGW Jul 19, 08:15 UTCJul 19, 09:30 UTC1h 15m
2026-07-19 EZS124Y AJA → BSL Jul 19, 06:15 UTCJul 19, 07:15 UTC1h 0m
2026-07-19 EZS96XV - Jul 19, 04:25 UTCJul 19, 05:15 UTC50m
2026-07-18 EZS81AP OLB → GVA Jul 18, 21:05 UTCJul 18, 22:10 UTC1h 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-JXU page for operator, model, and routing details .

Mode-S 4B1A2E frequently asked

What is Mode-S code 4B1A2E?
4B1A2E is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JXU.
Where is Mode-S 4B1A2E registered?
Mode-S code 4B1A2E is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1A2E broadcasting right now?
Yes. Mode-S 4B1A2E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1A2E, octal 22615056, decimal 4,921,902.
What flights does 4B1A2E operate?
Mode-S 4B1A2E has broadcast 20 distinct callsigns, including EJU92KW, EJU31ZN, EJU96KT, EJU82PN, EJU529H.