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
Broadcasting now · callsign SWR896B · 6,950 ft
Flights observed
312
Distinct callsigns
20
Country
CH
Last broadcast
1h ago

Current position

4B028A is currently broadcasting. Map zoomed to live position.

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 8 2026-05-20
SWR7GK Swiss International Air Lines 8 2026-05-20
SWR849W Swiss International Air Lines 6 2026-05-26
SWR7DF Swiss International Air Lines 6 2026-05-26
SWR43E - 6 2026-05-26
SWR3MD Swiss International Air Lines 6 2026-05-26
SWR2VF - 6 2026-05-19
SWR2LE Swiss International Air Lines 6 2026-05-19
SWR9ZV Swiss International Air Lines 5 2026-05-24
SWR9LK - 5 2026-05-28
SWR8GL Swiss International Air Lines 5 2026-05-20
SWR880E Swiss International Air Lines 5 2026-05-14
SWR74A Swiss International Air Lines 5 2026-05-15
SWR564 Swiss International Air Lines 5 2026-05-29
SWR502V Swiss International Air Lines 5 2026-05-20
SWR26D Swiss International Air Lines 5 2026-05-29
SWR1EX Swiss International Air Lines 5 2026-05-28
SWR1667 Swiss International Air Lines 5 2026-05-30
SWR1108 Swiss International Air Lines 5 2026-05-23
SWR9YP Swiss International Air Lines 4 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 SWR1102 ZRH → MUC May 30, 08:50 UTCMay 30, 09:45 UTC55m
2026-05-30 SWR1667 VCE → ZRH May 30, 04:50 UTCMay 30, 05:40 UTC50m
2026-05-29 SWR26D ZRH → VCE May 29, 20:05 UTCMay 29, 20:45 UTC40m
2026-05-29 SWR83B DUS → ZRH May 29, 13:55 UTCMay 29, 14:40 UTC45m
2026-05-29 SWR4ZW ZRH → DUS May 29, 11:55 UTCMay 29, 12:45 UTC50m
2026-05-29 SWR4EA - May 29, 09:20 UTCMay 29, 10:25 UTC1h 5m
2026-05-29 SWR564 ZRH → NCE May 29, 07:00 UTCMay 29, 07:55 UTC55m
2026-05-29 SWR1667 VCE → ZRH May 29, 04:55 UTCMay 29, 05:40 UTC45m
2026-05-28 SWR26D ZRH → VCE May 28, 19:55 UTCMay 28, 20:40 UTC45m
2026-05-28 SWR1GE BRE → ZRH May 28, 18:05 UTCMay 28, 18:55 UTC50m
2026-05-28 SWR854 ZRH → BRE May 28, 15:40 UTCMay 28, 16:45 UTC1h 5m
2026-05-28 SWR9LK HAJ → ZRH May 28, 13:10 UTCMay 28, 14:15 UTC1h 5m
2026-05-28 SWR1EX ZRH → HAJ May 28, 11:15 UTCMay 28, 12:15 UTC1h 0m
2026-05-28 SWR1BH CLJ → ZRH May 28, 08:15 UTCMay 28, 10:00 UTC1h 45m
2026-05-28 SWR7EM - May 28, 05:35 UTCMay 28, 07:00 UTC1h 25m
2026-05-27 SWR3F LCY → LCY May 27, 17:40 UTCMay 27, 18:50 UTC1h 10m
2026-05-27 SWR478V ZRH → LCY May 27, 15:20 UTCMay 27, 16:40 UTC1h 20m
2026-05-27 SWR2ZT VCE → ZRH May 27, 13:25 UTCMay 27, 14:15 UTC50m
2026-05-27 SWR1ZM ZRH → VCE May 27, 11:20 UTCMay 27, 12:05 UTC45m
2026-05-27 SWR4EA NCE → ZRH May 27, 09:10 UTCMay 27, 10:05 UTC55m
2026-05-27 SWR564 ZRH → NCE May 27, 07:00 UTCMay 27, 07:50 UTC50m
2026-05-27 SWR1667 VCE → ZRH May 27, 04:55 UTCMay 27, 05:45 UTC50m
2026-05-26 SWR26D ZRH → VCE May 26, 19:55 UTCMay 26, 20:34 UTC40m
2026-05-26 SWR849W DUS → ZRH May 26, 17:15 UTCMay 26, 18:05 UTC50m
2026-05-26 SWR43E ZRH → DUS May 26, 15:14 UTCMay 26, 16:15 UTC1h 0m
2026-05-26 SWR7DF MRS → ZRH May 26, 13:00 UTCMay 26, 13:50 UTC50m
2026-05-26 SWR3MD ZRH → MRS May 26, 11:09 UTCMay 26, 12:05 UTC55m
2026-05-26 SWR97Q BLQ → ZRH May 26, 08:59 UTCMay 26, 09:55 UTC55m
2026-05-26 SWR187D ZRH → BLQ May 26, 06:59 UTCMay 26, 07:40 UTC40m
2026-05-25 SWR849W DUS → ZRH May 25, 17:25 UTCMay 25, 18:10 UTC45m
2026-05-25 SWR43E ZRH → DUS May 25, 15:30 UTCMay 25, 16:25 UTC55m
2026-05-25 SWR9LK HAJ → ZRH May 25, 13:05 UTCMay 25, 14:00 UTC55m
2026-05-25 SWR1EX ZRH → HAJ May 25, 11:15 UTCMay 25, 12:10 UTC55m
2026-05-25 SWR7ZX WRO → ZRH May 25, 08:45 UTCMay 25, 09:55 UTC1h 10m
2026-05-25 SWR5TQ ZRH → WRO May 25, 06:10 UTCMay 25, 07:30 UTC1h 20m
2026-05-24 SWR919F DRS → ZRH May 24, 19:10 UTCMay 24, 20:20 UTC1h 10m
2026-05-24 SWR7EB ZRH → PRG May 24, 16:30 UTCMay 24, 17:25 UTC55m
2026-05-24 SWR457 LCY → ZRH May 24, 14:05 UTCMay 24, 15:15 UTC1h 10m
2026-05-24 SWR4AH ZRH → LCY May 24, 11:35 UTCMay 24, 12:55 UTC1h 20m
2026-05-24 SWR896B MUC → ZRH May 24, 09:55 UTCMay 24, 10:30 UTC35m
2026-05-24 SWR1102 ZRH → MUC May 24, 07:40 UTCMay 24, 08:20 UTC40m
2026-05-24 SWR9ZV ZRH → OSL May 24, 05:55 UTCMay 24, 06:25 UTC30m
2026-05-23 SWR1108 ZRH → MUC May 23, 19:30 UTCMay 23, 20:05 UTC35m
2026-05-23 SWR849W DUS → ZRH May 23, 17:20 UTCMay 23, 18:10 UTC50m
2026-05-23 SWR43E ZRH → DUS May 23, 15:20 UTCMay 23, 16:15 UTC55m
2026-05-23 SWR7DF MRS → ZRH May 23, 13:10 UTCMay 23, 14:05 UTC55m
2026-05-23 SWR3MD ZRH → MRS May 23, 11:15 UTCMay 23, 12:05 UTC50m
2026-05-23 SWR3VB LCY → ZRH May 23, 08:20 UTCMay 23, 09:35 UTC1h 15m
2026-05-23 SWR3EZ ZRH → LCY May 23, 06:00 UTCMay 23, 07:15 UTC1h 15m
2026-05-22 SWR9GD - May 22, 18:00 UTCMay 22, 19:35 UTC1h 35m

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?
Yes. Mode-S 4B028A is currently airborne.
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, SWR849W, SWR7DF, SWR43E.