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 Jul 26, 19:00 UTC
Flights observed
638
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 19:00 UTC

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 13 2026-07-21
SWR7GK - 13 2026-07-21
SWR9ZV Swiss International Air Lines 12 2026-07-23
SWR7DF - 12 2026-07-18
SWR3MD - 12 2026-07-18
SWR1108 Swiss International Air Lines 12 2026-07-22
SWR3VB Swiss International Air Lines 11 2026-07-24
SWR3EZ Swiss International Air Lines 11 2026-07-24
SWR83B - 10 2026-07-22
SWR4ZW Swiss International Air Lines 10 2026-07-22
SWR9TC - 9 2026-06-28
SWR8AK - 8 2026-06-28
SWR849W - 8 2026-07-13
SWR43E - 8 2026-07-13
SWR2VF - 8 2026-07-11
SWR2LE - 8 2026-07-11
SWR896B Swiss International Air Lines 7 2026-07-23
SWR880E - 7 2026-06-21
SWR7PW Swiss International Air Lines 7 2026-07-23
SWR74A - 7 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR7DC BRU → ZRH Jul 26, 18:05 UTCJul 26, 18:55 UTC50m
2026-07-26 SWR8QE ZRH → BRU Jul 26, 15:40 UTCJul 26, 16:35 UTC55m
2026-07-26 SWR15Y BRU → ZRH Jul 26, 13:40 UTCJul 26, 14:25 UTC45m
2026-07-26 SWR74D ZRH → BRU Jul 26, 11:40 UTCJul 26, 12:35 UTC55m
2026-07-26 SWR78Y VLC → ZRH Jul 26, 08:45 UTCJul 26, 10:30 UTC1h 45m
2026-07-26 SWR245T ZRH → VLC Jul 26, 05:20 UTCJul 26, 07:00 UTC1h 41m
2026-07-25 SWR1841 ATH → ZRH Jul 25, 18:30 UTCJul 25, 21:00 UTC2h 30m
2026-07-25 SWR4ZH ZRH → ATH Jul 25, 15:00 UTCJul 25, 17:10 UTC2h 10m
2026-07-25 SWR457 LCY → ZRH Jul 25, 11:50 UTCJul 25, 13:10 UTC1h 20m
2026-07-25 SWR4AH ZRH → LCY Jul 25, 09:50 UTCJul 25, 11:05 UTC1h 15m
2026-07-25 SWR7AK NCE → ZRH Jul 25, 07:50 UTCJul 25, 08:55 UTC1h 5m
2026-07-25 SWR42B ZRH → NCE Jul 25, 05:55 UTCJul 25, 06:45 UTC50m
2026-07-24 SWR919F DRS → ZRH Jul 24, 17:45 UTCJul 24, 18:40 UTC55m
2026-07-24 SWR7EB ZRH → PRG Jul 24, 15:45 UTCJul 24, 16:45 UTC1h 0m
2026-07-24 SWR7ZX - Jul 24, 13:35 UTCJul 24, 14:45 UTC1h 10m
2026-07-24 SWR5TQ ZRH → WRO Jul 24, 11:20 UTCJul 24, 12:30 UTC1h 10m
2026-07-24 SWR3VB LCY → ZRH Jul 24, 08:55 UTCJul 24, 10:05 UTC1h 10m
2026-07-24 SWR3EZ ZRH → LCY Jul 24, 06:20 UTCJul 24, 07:35 UTC1h 15m
2026-07-23 SWR1GE - Jul 23, 18:05 UTCJul 23, 18:55 UTC50m
2026-07-23 SWR854 ZRH → BRE Jul 23, 15:40 UTCJul 23, 16:50 UTC1h 10m
2026-07-23 SWR166M - Jul 23, 13:35 UTCJul 23, 14:10 UTC35m
2026-07-23 SWR7PW ZRH → MUC Jul 23, 11:45 UTCJul 23, 12:20 UTC35m
2026-07-23 SWR896B MUC → ZRH Jul 23, 09:50 UTCJul 23, 10:30 UTC40m
2026-07-23 SWR1102 ZRH → MUC Jul 23, 07:45 UTCJul 23, 08:25 UTC40m
2026-07-23 SWR9ZV ZRH → OSL Jul 23, 05:50 UTCJul 23, 06:20 UTC30m
2026-07-22 SWR1108 ZRH → MUC Jul 22, 19:30 UTCJul 22, 20:05 UTC35m
2026-07-22 SWR4Q - Jul 22, 17:15 UTCJul 22, 18:15 UTC1h 0m
2026-07-22 SWR841C - Jul 22, 15:05 UTCJul 22, 16:00 UTC55m
2026-07-22 SWR83B - Jul 22, 13:10 UTCJul 22, 13:55 UTC45m
2026-07-22 SWR4ZW ZRH → DUS Jul 22, 11:10 UTCJul 22, 11:55 UTC45m
2026-07-21 SWR85D ZRH → ALC Jul 21, 18:35 UTCJul 21, 19:50 UTC1h 15m
2026-07-21 SWR7GK ZRH → LCY Jul 21, 16:35 UTCJul 21, 17:50 UTC1h 15m
2026-07-21 SWR83B DUS → ZRH Jul 21, 14:10 UTCJul 21, 14:55 UTC45m
2026-07-21 SWR4ZW ZRH → DUS Jul 21, 12:10 UTCJul 21, 13:10 UTC1h 0m
2026-07-21 SWR3VB LCY → ZRH Jul 21, 09:15 UTCJul 21, 10:25 UTC1h 10m
2026-07-21 SWR3EZ ZRH → LCY Jul 21, 06:55 UTCJul 21, 08:10 UTC1h 15m
2026-07-19 SWR4Q - Jul 19, 17:15 UTCJul 19, 18:10 UTC55m
2026-07-19 SWR841C ZRH → MRS Jul 19, 14:50 UTCJul 19, 15:50 UTC1h 0m
2026-07-19 SWR5PE MLA → ZRH Jul 19, 11:25 UTCJul 19, 13:20 UTC1h 55m
2026-07-19 SWR1792 ZRH → MLA Jul 19, 08:25 UTCJul 19, 10:10 UTC1h 45m
2026-07-19 SWR9ZV ZRH → OSL Jul 19, 06:00 UTCJul 19, 06:40 UTC40m
2026-07-18 SWR1108 ZRH → MUC Jul 18, 19:40 UTCJul 18, 20:15 UTC35m
2026-07-18 SWR2HE MUC → ZRH Jul 18, 18:00 UTCJul 18, 18:40 UTC40m
2026-07-18 SWR5BP ZRH → MUC Jul 18, 15:50 UTCJul 18, 16:45 UTC55m
2026-07-18 SWR7DF - Jul 18, 13:00 UTCJul 18, 13:50 UTC50m
2026-07-18 SWR3MD - Jul 18, 10:50 UTCJul 18, 11:50 UTC1h 0m
2026-07-18 SWR3VB - Jul 18, 08:25 UTCJul 18, 09:35 UTC1h 10m
2026-07-18 SWR3EZ ZRH → LCY Jul 18, 06:00 UTCJul 18, 07:20 UTC1h 20m
2026-07-17 SWR171D - Jul 17, 17:50 UTCJul 17, 19:05 UTC1h 15m
2026-07-17 SWR2TV - Jul 17, 15:25 UTCJul 17, 16:34 UTC1h 10m

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 Jul 26, 19:00 UTC.
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.