sensors Mode-S transponder

4B1A29

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JXP · AIRBUS A-320

Hex
4B1A29
Octal
22615051
Decimal
4,921,897
Country
CH
Tail
HB-JXP
Type
A320
No current signal · last broadcast 11h ago
Flights observed
269
Distinct callsigns
20
Country
CH
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 4B1A29.

Country allocation

The ICAO 24-bit address 4B1A29 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJU94YN NCE → BER May 29, 19:20 UTCMay 29, 21:05 UTC1h 45m
2026-05-29 EJU41DH MXP → AMS May 29, 16:45 UTCMay 29, 18:15 UTC1h 30m
2026-05-29 EJU38AB CPH → CDG May 29, 14:15 UTCMay 29, 15:35 UTC1h 20m
2026-05-29 EJU61PU BER → CDG May 29, 11:35 UTCMay 29, 12:55 UTC1h 20m
2026-05-29 EJU49LD BCN → BER May 29, 08:05 UTCMay 29, 10:20 UTC2h 15m
2026-05-29 EJU35TP BER → BCN May 29, 04:35 UTCMay 29, 06:45 UTC2h 10m
2026-05-28 EJU9071 LYS → NAP May 28, 19:15 UTCMay 28, 20:25 UTC1h 10m
2026-05-27 EZS68ME BDS → BSL May 27, 08:10 UTCMay 27, 09:55 UTC1h 45m
2026-05-27 EZS52RH BSL → BDS May 27, 05:04 UTCMay 27, 06:40 UTC1h 35m
2026-05-26 EZS73NJ MLA → BSL May 26, 17:59 UTCMay 26, 20:05 UTC2h 5m
2026-05-26 EZS1281 BSL → MLA May 26, 15:00 UTCMay 26, 16:59 UTC2h 0m
2026-05-26 EZS87NG FUE → BSL May 26, 09:40 UTCMay 26, 13:29 UTC3h 50m
2026-05-26 EZS56RW BSL → FUE May 26, 04:45 UTCMay 26, 08:10 UTC3h 25m
2026-05-25 EZS65EW VCE → BSL May 25, 20:04 UTCMay 25, 20:50 UTC45m
2026-05-25 EZS83LE BSL → VCE May 25, 18:20 UTCMay 25, 19:05 UTC45m
2026-05-25 EZS124Y AJA → BSL May 25, 16:25 UTCMay 25, 17:35 UTC1h 10m
2026-05-25 EZS548Q BSL → AJA May 25, 14:35 UTCMay 25, 15:40 UTC1h 5m
2026-05-25 EZS26WZ SPU → BSL May 25, 12:35 UTCMay 25, 13:40 UTC1h 5m
2026-05-25 EZS16RV BSL → SPU May 25, 10:05 UTCMay 25, 11:20 UTC1h 15m
2026-05-25 EZS68GC LGW → BSL May 25, 08:05 UTCMay 25, 09:15 UTC1h 10m
2026-05-25 EZS51PA - May 25, 05:05 UTCMay 25, 06:20 UTC1h 15m
2026-05-24 EZS48AX - May 24, 19:00 UTCMay 24, 20:40 UTC1h 40m
2026-05-24 EZS62HY PRG → BSL May 24, 16:15 UTCMay 24, 17:50 UTC1h 35m
2026-05-24 EZS72VX NCE → GVA May 24, 14:35 UTCMay 24, 15:15 UTC40m
2026-05-24 EZS1581 GVA → NCE May 24, 12:30 UTCMay 24, 13:15 UTC45m
2026-05-24 EJU34HV - May 24, 08:20 UTCMay 24, 10:20 UTC2h 0m
2026-05-24 EJU1317 - May 24, 05:10 UTCMay 24, 07:10 UTC2h 0m
2026-05-23 EZS82UP CFU → GVA May 23, 18:55 UTCMay 23, 20:55 UTC2h 0m
2026-05-23 EZS19CP GVA → CFU May 23, 15:35 UTCMay 23, 17:35 UTC2h 0m
2026-05-23 EZS98NZ - May 23, 13:25 UTCMay 23, 14:30 UTC1h 5m
2026-05-23 EZS81FQ GVA → MAH May 23, 11:05 UTCMay 23, 12:25 UTC1h 20m
2026-05-23 EZS46MW TIA → GVA May 23, 08:20 UTCMay 23, 10:05 UTC1h 45m
2026-05-23 EZS31WH - May 23, 05:15 UTCMay 23, 06:55 UTC1h 40m
2026-05-22 EZS18AR LIS → GVA May 22, 19:15 UTCMay 22, 21:10 UTC1h 55m
2026-05-22 EZS62YX GVA → LIS May 22, 15:50 UTCMay 22, 18:05 UTC2h 15m
2026-05-22 EZS48NQ SKP → GVA May 22, 12:50 UTCMay 22, 14:45 UTC1h 55m
2026-05-22 EZS21WG GVA → SKP May 22, 09:30 UTCMay 22, 11:20 UTC1h 49m
2026-05-22 EZS16MJ BOD → GVA May 22, 06:55 UTCMay 22, 07:55 UTC1h 0m
2026-05-22 EZS25BW GVA → BOD May 22, 05:05 UTCMay 22, 06:00 UTC55m
2026-05-21 EZS51BG NCE → GVA May 21, 19:50 UTCMay 21, 20:35 UTC45m
2026-05-21 EZS53VN GVA → NCE May 21, 18:00 UTCMay 21, 18:45 UTC45m
2026-05-21 EZS42JW LGW → GVA May 21, 15:45 UTCMay 21, 16:55 UTC1h 10m
2026-05-21 EZS72YG GVA → LGW May 21, 13:30 UTCMay 21, 14:35 UTC1h 5m
2026-05-21 EZS31QP ATH → GVA May 21, 08:20 UTCMay 21, 10:50 UTC2h 30m
2026-05-21 EZS68GV GVA → ATH May 21, 04:45 UTCMay 21, 07:05 UTC2h 20m
2026-05-20 EJU39XA MAD → GVA May 20, 19:35 UTCMay 20, 21:00 UTC1h 25m
2026-05-20 EJU59FZ SPC → BER May 20, 16:40 UTCMay 20, 18:20 UTC1h 40m
2026-05-20 EZS42JW LGW → GVA May 20, 14:45 UTCMay 20, 15:50 UTC1h 5m
2026-05-20 EZS72YG GVA → LGW May 20, 12:25 UTCMay 20, 13:40 UTC1h 15m
2026-05-19 EZS46MW TIA → GVA May 19, 15:00 UTCMay 19, 16:50 UTC1h 50m

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

Mode-S 4B1A29 frequently asked

What is Mode-S code 4B1A29?
4B1A29 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JXP.
Where is Mode-S 4B1A29 registered?
Mode-S code 4B1A29 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1A29 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1A29, octal 22615051, decimal 4,921,897.
What flights does 4B1A29 operate?
Mode-S 4B1A29 has broadcast 20 distinct callsigns, including EZS51PA, EZS48NQ, EZS25BW, EZS16MJ, EZS72YG.