Apparatus

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sensors Mode-S transponder

4B1819

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JDH · AIRBUS A-320neo

Hex
4B1819
Octal
22614031
Decimal
4,921,369
Country
CH
Tail
HB-JDH
Type
A20N
No current signal · last broadcast 6h ago
Flights observed
540
Distinct callsigns
20
Country
CH
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 4B1819.

Country allocation

The ICAO 24-bit address 4B1819 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
SWR49L - 18 2026-07-08
SWR1886 - 18 2026-07-07
SWR40L - 11 2026-07-04
SWR3AP - 11 2026-07-05
SWR5AX Swiss International Air Lines 9 2026-06-20
SWR336L - 9 2026-06-20
SWR8QE - 8 2026-07-10
SWR7DC - 8 2026-07-10
SWR4VE - 8 2026-07-13
SWR4KB - 7 2026-07-12
SWR9LA - 6 2026-06-28
SWR98P - 6 2026-07-05
SWR935L - 6 2026-06-28
SWR533X Swiss International Air Lines 6 2026-06-14
SWR438A - 6 2026-07-01
SWR3PT Swiss International Air Lines 6 2026-06-14
SWR39L Swiss International Air Lines 6 2026-06-20
SWR2XH - 6 2026-07-05
SWR2EP - 6 2026-07-12
SWR21M - 6 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWR125A CPH → ZRH Jul 14, 18:50 UTCJul 14, 20:10 UTC1h 20m
2026-07-14 SWR3TA ZRH → CPH Jul 14, 16:20 UTCJul 14, 17:40 UTC1h 20m
2026-07-14 SWR4TD BCN → ZRH Jul 14, 13:35 UTCJul 14, 15:00 UTC1h 25m
2026-07-14 SWR87C ZRH → BCN Jul 14, 10:40 UTCJul 14, 12:00 UTC1h 20m
2026-07-13 SWR57Z - Jul 13, 18:15 UTCJul 13, 19:50 UTC1h 35m
2026-07-13 SWR465K ZRH → MAD Jul 13, 14:55 UTCJul 13, 16:45 UTC1h 50m
2026-07-13 SWR731C HAM → ZRH Jul 13, 09:05 UTCJul 13, 10:20 UTC1h 15m
2026-07-13 SWR92W ZRH → HAM Jul 13, 06:50 UTCJul 13, 07:55 UTC1h 5m
2026-07-13 SWR4VE - Jul 13, 04:10 UTCJul 13, 05:35 UTC1h 25m
2026-07-12 SWR4KB ZRH → BCN Jul 12, 20:15 UTCJul 12, 21:40 UTC1h 25m
2026-07-12 SWR49K CPH → ZRH Jul 12, 17:15 UTCJul 12, 18:40 UTC1h 25m
2026-07-12 SWR96V ZRH → CPH Jul 12, 14:45 UTCJul 12, 16:05 UTC1h 20m
2026-07-12 SWR5GT - Jul 12, 11:45 UTCJul 12, 13:15 UTC1h 30m
2026-07-12 SWR2EP - Jul 12, 08:05 UTCJul 12, 09:40 UTC1h 35m
2026-07-11 SWR2089 LIS → ZRH Jul 11, 16:50 UTCJul 11, 19:15 UTC2h 25m
2026-07-11 SWR58H ZRH → LIS Jul 11, 13:05 UTCJul 11, 15:45 UTC2h 40m
2026-07-11 SWR9ZA OPO → ZRH Jul 11, 08:25 UTCJul 11, 10:35 UTC2h 10m
2026-07-11 SWR2LM - Jul 11, 04:40 UTCJul 11, 06:50 UTC2h 10m
2026-07-10 SWR7DC BRU → ZRH Jul 10, 18:10 UTCJul 10, 18:55 UTC45m
2026-07-10 SWR8QE ZRH → BRU Jul 10, 16:15 UTCJul 10, 17:15 UTC1h 0m
2026-07-10 SWR1CK DUB → ZRH Jul 10, 12:55 UTCJul 10, 14:40 UTC1h 45m
2026-07-10 SWR477L ZRH → DUB Jul 10, 09:15 UTCJul 10, 11:05 UTC1h 50m
2026-07-10 SWR2083 LIS → ZRH Jul 10, 05:10 UTCJul 10, 07:30 UTC2h 20m
2026-07-09 SWR755L ZRH → LIS Jul 9, 19:50 UTCJul 9, 22:15 UTC2h 25m
2026-07-09 SWR849W - Jul 9, 17:30 UTCJul 9, 18:20 UTC50m
2026-07-09 SWR43E ZRH → DUS Jul 9, 15:35 UTCJul 9, 16:25 UTC50m
2026-07-09 SWR1CK DUB → ZRH Jul 9, 12:40 UTCJul 9, 14:20 UTC1h 40m
2026-07-09 SWR477L ZRH → DUB Jul 9, 09:10 UTCJul 9, 11:00 UTC1h 50m
2026-07-09 SWR2083 LIS → ZRH Jul 9, 05:05 UTCJul 9, 07:30 UTC2h 25m
2026-07-08 SWR755L ZRH → LIS Jul 8, 20:00 UTCJul 8, 22:30 UTC2h 30m
2026-07-08 SWR262C - Jul 8, 15:20 UTCJul 8, 17:40 UTC2h 20m
2026-07-08 SWR3WL - Jul 8, 11:55 UTCJul 8, 14:00 UTC2h 5m
2026-07-08 SWR2TM MXP → ZRH Jul 8, 09:00 UTCJul 8, 09:40 UTC40m
2026-07-08 SWR1DL ZRH → MXP Jul 8, 07:10 UTCJul 8, 07:40 UTC30m
2026-07-08 SWR49L - Jul 8, 03:20 UTCJul 8, 05:30 UTC2h 10m
2026-07-07 SWR1886 ZRH → OTP Jul 7, 20:15 UTCJul 7, 22:00 UTC1h 45m
2026-07-07 SWR849W DUS → ZRH Jul 7, 17:15 UTCJul 7, 18:05 UTC50m
2026-07-07 SWR43E ZRH → DUS Jul 7, 15:25 UTCJul 7, 16:20 UTC55m
2026-07-07 SWR4EA NCE → ZRH Jul 7, 09:15 UTCJul 7, 10:20 UTC1h 5m
2026-07-07 SWR564 ZRH → NCE Jul 7, 07:00 UTCJul 7, 07:55 UTC55m
2026-07-07 SWR49L - Jul 7, 03:35 UTCJul 7, 05:40 UTC2h 5m
2026-07-06 SWR1886 - Jul 6, 20:15 UTCJul 6, 22:05 UTC1h 50m
2026-07-06 SWR4HA - Jul 6, 17:25 UTCJul 6, 18:50 UTC1h 25m
2026-07-06 SWR312A ZRH → SJJ Jul 6, 15:20 UTCJul 6, 16:25 UTC1h 5m
2026-07-06 SWR75L DUB → ZRH Jul 6, 08:30 UTCJul 6, 10:25 UTC1h 55m
2026-07-06 SWR1YB - Jul 6, 06:35 UTCJul 6, 07:30 UTC55m
2026-07-06 SWR1YB - Jul 6, 05:30 UTCJul 6, 06:30 UTC1h 0m
2026-07-05 SWR8AK MAN → ZRH Jul 5, 18:40 UTCJul 5, 20:15 UTC1h 35m
2026-07-05 SWR9TC ZRH → MAN Jul 5, 15:35 UTCJul 5, 17:15 UTC1h 40m
2026-07-05 SWR2XH - Jul 5, 11:40 UTCJul 5, 13:55 UTC2h 15m

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

Mode-S 4B1819 frequently asked

What is Mode-S code 4B1819?
4B1819 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JDH.
Where is Mode-S 4B1819 registered?
Mode-S code 4B1819 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1819 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1819, octal 22614031, decimal 4,921,369.
What flights does 4B1819 operate?
Mode-S 4B1819 has broadcast 20 distinct callsigns, including SWR49L, SWR1886, SWR40L, SWR3AP, SWR5AX.