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sensors Mode-S transponder

4B1919

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JND · BOEING 777-300ER

Hex
4B1919
Octal
22614431
Decimal
4,921,625
Country
CH
Tail
HB-JND
Type
B77W
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
201
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 4B1919.

Country allocation

The ICAO 24-bit address 4B1919 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
SWR139 - 32 2026-07-16
SWR138 - 29 2026-07-16
SWR39 Swiss International Air Lines 16 2026-07-26
SWR93 - 14 2026-07-13
SWR92 - 11 2026-06-15
SWR35G Swiss International Air Lines 10 2026-07-25
SWR181 - 10 2026-07-23
SWR180 Swiss International Air Lines 10 2026-07-22
SWR9G - 8 2026-07-21
SWR8T - 8 2026-07-20
SWR161 - 8 2026-07-18
SWR160 - 8 2026-07-17
SWR41G - 6 2026-07-15
SWR40 - 6 2026-07-14
SWR176 Swiss International Air Lines 6 2026-07-26
SWR65 - 5 2026-07-02
SWR64E - 5 2026-07-01
SWR177 Swiss International Air Lines 5 2026-07-24
SWR7092 Swiss International Air Lines 2 2026-07-13
SWR5573 - 1 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR176 ZRH → SIN Jul 26, 21:10 UTCJul 26, 22:15 UTC1h 5m
2026-07-26 SWR39 SFO → ZRH Jul 26, 03:00 UTCJul 26, 12:50 UTC9h 51m
2026-07-25 SWR35G ZRH → SFO Jul 25, 12:10 UTCJul 25, 23:40 UTC11h 30m
2026-07-24 SWR177 SIN → ZRH Jul 24, 15:55 UTCJul 25, 04:15 UTC12h 20m
2026-07-23 SWR176 ZRH → SIN Jul 23, 21:05 UTCJul 24, 08:50 UTC11h 45m
2026-07-23 SWR181 - Jul 23, 06:20 UTCJul 23, 17:20 UTC11h 0m
2026-07-22 SWR180 ZRH → BKK Jul 22, 16:30 UTCJul 23, 02:25 UTC9h 55m
2026-07-22 SWR39 SFO → ZRH Jul 22, 02:55 UTCJul 22, 13:10 UTC10h 15m
2026-07-21 SWR35G ZRH → SFO Jul 21, 12:00 UTCJul 21, 23:30 UTC11h 30m
2026-07-21 SWR9G - Jul 21, 00:50 UTCJul 21, 08:50 UTC8h 0m
2026-07-20 SWR8T ZRH → ORD Jul 20, 12:10 UTCJul 20, 20:55 UTC8h 45m
2026-07-19 SWR177 SIN → ZRH Jul 19, 15:55 UTCJul 20, 04:15 UTC12h 20m
2026-07-18 SWR176 ZRH → SIN Jul 18, 21:25 UTCJul 19, 09:15 UTC11h 50m
2026-07-18 SWR161 - Jul 18, 02:45 UTCJul 18, 17:00 UTC14h 16m
2026-07-17 SWR160 ZRH → NRT Jul 17, 12:10 UTCJul 17, 23:50 UTC11h 40m
2026-07-16 SWR139 - Jul 16, 18:10 UTCJul 17, 04:10 UTC10h 0m
2026-07-16 SWR139 - Jul 16, 16:00 UTCJul 16, 16:19 UTC20m
2026-07-16 SWR138 - Jul 16, 07:50 UTCJul 16, 08:30 UTC40m
2026-07-15 SWR138 - Jul 15, 21:10 UTCJul 16, 00:45 UTC3h 35m
2026-07-15 SWR41G - Jul 15, 03:00 UTCJul 15, 13:50 UTC10h 50m
2026-07-14 SWR40 ZRH → LAX Jul 14, 11:55 UTCJul 14, 23:10 UTC11h 14m
2026-07-13 SWR93 - Jul 13, 22:00 UTCJul 14, 08:35 UTC10h 35m
2026-07-13 SWR7092 ZRH → GRU Jul 13, 06:55 UTCJul 13, 18:25 UTC11h 30m
2026-07-12 SWR139 - Jul 12, 18:10 UTCJul 13, 04:15 UTC10h 5m
2026-07-12 SWR139 - Jul 12, 16:01 UTCJul 12, 16:15 UTC15m
2026-07-12 SWR138 - Jul 12, 07:55 UTCJul 12, 08:25 UTC30m
2026-07-11 SWR138 - Jul 11, 21:00 UTCJul 12, 06:10 UTC9h 10m
2026-07-11 SWR41G - Jul 11, 02:50 UTCJul 11, 13:30 UTC10h 40m
2026-07-10 SWR40 - Jul 10, 12:35 UTCJul 10, 23:45 UTC11h 10m
2026-07-10 SWR139 - Jul 10, 03:40 UTCJul 10, 04:05 UTC25m
2026-07-09 SWR139 - Jul 9, 17:50 UTCJul 10, 01:00 UTC7h 10m
2026-07-09 SWR139 - Jul 9, 15:40 UTCJul 9, 15:55 UTC15m
2026-07-09 SWR138 - Jul 9, 07:35 UTCJul 9, 08:05 UTC30m
2026-07-08 SWR138 - Jul 8, 20:50 UTCJul 9, 00:25 UTC3h 35m
2026-07-08 SWR5573 - Jul 8, 14:55 UTCJul 8, 15:50 UTC55m
2026-07-08 SWR5570 ZRH → ZRH Jul 8, 06:25 UTCJul 8, 07:15 UTC50m
2026-07-07 SWR139 - Jul 7, 18:10 UTCJul 8, 04:20 UTC10h 10m
2026-07-07 SWR139 - Jul 7, 16:05 UTCJul 7, 16:25 UTC20m
2026-07-07 SWR138 - Jul 7, 07:45 UTCJul 7, 08:20 UTC35m
2026-07-06 SWR138 - Jul 6, 21:05 UTCJul 6, 23:15 UTC2h 10m
2026-07-06 SWR41G - Jul 6, 02:50 UTCJul 6, 13:15 UTC10h 25m
2026-07-05 SWR40 - Jul 5, 11:50 UTCJul 5, 23:25 UTC11h 35m
2026-07-04 SWR177 - Jul 4, 15:50 UTCJul 5, 04:10 UTC12h 20m
2026-07-03 SWR176 - Jul 3, 21:10 UTCJul 4, 08:45 UTC11h 35m
2026-07-03 SWR39 SFO → ZRH Jul 3, 03:05 UTCJul 3, 13:20 UTC10h 15m
2026-07-02 SWR35G - Jul 2, 13:10 UTCJul 3, 00:10 UTC11h 0m
2026-07-02 SWR65 - Jul 2, 01:50 UTCJul 2, 10:25 UTC8h 35m
2026-07-01 SWR64E ZRH → MIA Jul 1, 12:10 UTCJul 1, 21:55 UTC9h 45m
2026-06-30 SWR177 - Jun 30, 15:50 UTCJul 1, 04:15 UTC12h 25m
2026-06-29 SWR176 - Jun 29, 21:39 UTCJun 30, 09:40 UTC12h 1m

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

Mode-S 4B1919 frequently asked

What is Mode-S code 4B1919?
4B1919 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JND.
Where is Mode-S 4B1919 registered?
Mode-S code 4B1919 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1919 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1919, octal 22614431, decimal 4,921,625.
What flights does 4B1919 operate?
Mode-S 4B1919 has broadcast 20 distinct callsigns, including SWR139, SWR138, SWR39, SWR93, SWR92.