Apparatus

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sensors Mode-S transponder

4B028A

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-AZA · EMBRAER ERJ-190-300

Hex
4B028A
Octal
22601212
Decimal
4,915,850
Country
CH
Tail
HB-AZA
Type
E290
No current signal · last broadcast 1h ago
Flights observed
570
Distinct callsigns
20
Country
CH
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4B028A.

Country allocation

The ICAO 24-bit address 4B028A 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
SWR85D Swiss International Air Lines 12 2026-06-17
SWR7GK Swiss International Air Lines 12 2026-06-17
SWR9ZV - 10 2026-07-14
SWR7DF - 10 2026-07-14
SWR3MD - 10 2026-07-14
SWR1108 - 10 2026-07-13
SWR9TC - 9 2026-06-28
SWR8AK - 8 2026-06-28
SWR849W - 8 2026-07-13
SWR43E - 8 2026-07-13
SWR3VB - 8 2026-07-04
SWR3EZ - 8 2026-07-04
SWR2VF - 8 2026-07-11
SWR2LE - 8 2026-07-11
SWR880E - 7 2026-06-21
SWR83B Swiss International Air Lines 7 2026-06-23
SWR74A - 7 2026-06-22
SWR4ZW - 7 2026-06-23
SWR2WX - 7 2026-06-17
SWR1BH - 7 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWR5AT - Jul 14, 18:15 UTCJul 14, 18:30 UTC15m
2026-07-14 SWR4DM - Jul 14, 15:55 UTCJul 14, 17:00 UTC1h 5m
2026-07-14 SWR7DF - Jul 14, 13:30 UTCJul 14, 14:35 UTC1h 5m
2026-07-14 SWR3MD - Jul 14, 11:35 UTCJul 14, 12:30 UTC55m
2026-07-14 SWR896B - Jul 14, 09:40 UTCJul 14, 10:15 UTC35m
2026-07-14 SWR1102 ZRH → MUC Jul 14, 08:00 UTCJul 14, 08:40 UTC40m
2026-07-14 SWR9ZV MUC → ZRH Jul 14, 06:00 UTCJul 14, 06:40 UTC40m
2026-07-13 SWR1108 ZRH → MUC Jul 13, 19:35 UTCJul 13, 20:05 UTC30m
2026-07-13 SWR849W DUS → ZRH Jul 13, 17:35 UTCJul 13, 18:20 UTC45m
2026-07-13 SWR43E ZRH → DUS Jul 13, 15:40 UTCJul 13, 16:30 UTC50m
2026-07-12 SWR5PC LGW → ZRH Jul 12, 19:30 UTCJul 12, 20:40 UTC1h 10m
2026-07-12 SWR5GM ZRH → LGW Jul 12, 16:40 UTCJul 12, 18:05 UTC1h 25m
2026-07-12 SWR7DF - Jul 12, 14:10 UTCJul 12, 15:10 UTC1h 0m
2026-07-12 SWR3MD - Jul 12, 11:35 UTCJul 12, 12:35 UTC1h 0m
2026-07-12 SWR2DV - Jul 12, 08:15 UTCJul 12, 09:10 UTC55m
2026-07-12 SWR883P ZRH → AMS Jul 12, 05:45 UTCJul 12, 06:50 UTC1h 5m
2026-07-11 SWR47D - Jul 11, 18:20 UTCJul 11, 19:15 UTC55m
2026-07-11 SWR44L ZRH → FLR Jul 11, 16:45 UTCJul 11, 17:30 UTC45m
2026-07-11 SWR2LE - Jul 11, 13:10 UTCJul 11, 14:45 UTC1h 35m
2026-07-11 SWR2VF - Jul 11, 10:25 UTCJul 11, 12:10 UTC1h 45m
2026-07-11 SWR2DV - Jul 11, 08:30 UTCJul 11, 09:25 UTC55m
2026-07-11 SWR883P ZRH → AMS Jul 11, 05:50 UTCJul 11, 07:00 UTC1h 10m
2026-07-10 SWR7ZX WRO → ZRH Jul 10, 13:45 UTCJul 10, 14:55 UTC1h 10m
2026-07-10 SWR5TQ ZRH → WRO Jul 10, 11:35 UTCJul 10, 12:45 UTC1h 10m
2026-07-10 SWR8ZB - Jul 10, 08:20 UTCJul 10, 09:55 UTC1h 35m
2026-07-10 SWR27Q ZRH → BHX Jul 10, 05:50 UTCJul 10, 07:15 UTC1h 25m
2026-07-09 SWR7TE MLA → ZRH Jul 9, 18:45 UTCJul 9, 20:30 UTC1h 45m
2026-07-09 SWR1794 ZRH → MLA Jul 9, 16:00 UTCJul 9, 17:55 UTC1h 55m
2026-07-09 SWR2ZT - Jul 9, 13:40 UTCJul 9, 14:25 UTC45m
2026-07-09 SWR1ZM ZRH → VCE Jul 9, 11:25 UTCJul 9, 12:20 UTC55m
2026-07-09 SWR1BH - Jul 9, 08:10 UTCJul 9, 09:55 UTC1h 45m
2026-07-09 SWR7EM - Jul 9, 05:35 UTCJul 9, 07:00 UTC1h 25m
2026-07-08 SWR3F LCY → ZRH Jul 8, 17:15 UTCJul 8, 18:25 UTC1h 10m
2026-07-08 SWR478V ZRH → LCY Jul 8, 15:05 UTCJul 8, 16:20 UTC1h 15m
2026-07-08 SWR379Q BLQ → ZRH Jul 8, 13:00 UTCJul 8, 13:50 UTC50m
2026-07-08 SWR9KL ZRH → BLQ Jul 8, 11:20 UTCJul 8, 12:00 UTC40m
2026-07-08 SWR2267 DBV → ZRH Jul 8, 08:25 UTCJul 8, 10:00 UTC1h 35m
2026-07-08 SWR59H ZRH → DBV Jul 8, 05:50 UTCJul 8, 07:10 UTC1h 20m
2026-07-07 SWR90A GWT → ZRH Jul 7, 17:30 UTCJul 7, 18:40 UTC1h 10m
2026-07-07 SWR730M ZRH → GWT Jul 7, 15:05 UTCJul 7, 16:30 UTC1h 25m
2026-07-07 SWR755 LUX → ZRH Jul 7, 13:15 UTCJul 7, 13:55 UTC40m
2026-07-07 SWR594C ZRH → LUX Jul 7, 11:40 UTCJul 7, 12:20 UTC40m
2026-07-07 SWR896B - Jul 7, 09:40 UTCJul 7, 10:20 UTC40m
2026-07-07 SWR1102 ZRH → MUC Jul 7, 07:40 UTCJul 7, 08:25 UTC45m
2026-07-07 SWR9ZV - Jul 7, 05:55 UTCJul 7, 06:25 UTC30m
2026-07-06 SWR1108 ZRH → MUC Jul 6, 19:25 UTCJul 6, 20:05 UTC40m
2026-07-06 SWR4Q - Jul 6, 17:35 UTCJul 6, 18:30 UTC55m
2026-07-06 SWR841C - Jul 6, 14:55 UTCJul 6, 15:50 UTC55m
2026-07-06 SWR457 LCY → ZRH Jul 6, 12:40 UTCJul 6, 13:55 UTC1h 15m
2026-07-06 SWR4AH ZRH → LCY Jul 6, 10:20 UTCJul 6, 11:40 UTC1h 20m

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

Mode-S 4B028A frequently asked

What is Mode-S code 4B028A?
4B028A is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-AZA.
Where is Mode-S 4B028A registered?
Mode-S code 4B028A is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B028A broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B028A, octal 22601212, decimal 4,915,850.
What flights does 4B028A operate?
Mode-S 4B028A has broadcast 20 distinct callsigns, including SWR85D, SWR7GK, SWR9ZV, SWR7DF, SWR3MD.