Apparatus

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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 4h ago
Flights observed
97
Distinct callsigns
16
Country
CH
Last broadcast
4h ago

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 16 distinct

Callsign Airline Flights Last seen
SWR139 Swiss International Air Lines 13 2026-05-28
SWR138 Swiss International Air Lines 13 2026-05-27
SWR39 Swiss International Air Lines 10 2026-05-12
SWR92 Swiss International Air Lines 9 2026-05-29
SWR93 Swiss International Air Lines 8 2026-05-16
SWR181 Swiss International Air Lines 8 2026-04-18
SWR180 Swiss International Air Lines 8 2026-04-18
SWR9G Swiss International Air Lines 5 2026-05-26
SWR8T Swiss International Air Lines 5 2026-05-25
SWR161 Swiss International Air Lines 5 2026-05-20
SWR160 Swiss International Air Lines 5 2026-05-19
SWR35G Swiss International Air Lines 4 2026-05-11
SWR65 Swiss International Air Lines 1 2026-04-28
SWR64E Swiss International Air Lines 1 2026-04-28
SWR177 Swiss International Air Lines 1 2026-04-22
SWR176 Swiss International Air Lines 1 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SWR92 ZRH → GRU May 29, 21:25 UTCMay 30, 00:35 UTC3h 10m
2026-05-28 SWR139 HKG → ZRH May 28, 00:15 UTCMay 28, 04:20 UTC4h 5m
2026-05-27 SWR139 HKG → ZRH May 27, 15:50 UTCMay 27, 16:05 UTC15m
2026-05-27 SWR138 ZRH → HKG May 27, 07:35 UTCMay 27, 08:10 UTC35m
2026-05-26 SWR138 ZRH → HKG May 26, 20:45 UTCMay 27, 05:35 UTC8h 50m
2026-05-26 SWR9G ORD → ZRH May 26, 00:35 UTCMay 26, 08:45 UTC8h 10m
2026-05-25 SWR8T ZRH → ORD May 25, 12:40 UTCMay 25, 21:40 UTC8h 59m
2026-05-25 SWR9G ORD → ZRH May 25, 01:55 UTCMay 25, 09:15 UTC7h 20m
2026-05-24 SWR8T ZRH → ORD May 24, 12:30 UTCMay 24, 21:45 UTC9h 15m
2026-05-23 SWR139 HKG → ZRH May 23, 23:55 UTCMay 24, 04:05 UTC4h 10m
2026-05-23 SWR139 HKG → ZRH May 23, 15:45 UTCMay 23, 16:00 UTC15m
2026-05-22 SWR138 ZRH → HKG May 22, 21:00 UTCMay 23, 08:30 UTC11h 30m
2026-05-21 SWR139 HKG → ZRH May 21, 19:05 UTCMay 22, 04:20 UTC9h 15m
2026-05-21 SWR139 HKG → ZRH May 21, 16:05 UTCMay 21, 16:15 UTC10m
2026-05-20 SWR138 ZRH → HKG May 20, 20:50 UTCMay 21, 08:35 UTC11h 45m
2026-05-20 SWR161 NRT → ZRH May 20, 02:45 UTCMay 20, 16:45 UTC14h 1m
2026-05-19 SWR160 ZRH → NRT May 19, 11:35 UTCMay 19, 23:50 UTC12h 15m
2026-05-19 SWR9G ORD → ZRH May 19, 00:50 UTCMay 19, 08:40 UTC7h 50m
2026-05-18 SWR8T ZRH → ORD May 18, 12:00 UTCMay 18, 21:20 UTC9h 19m
2026-05-18 SWR9G ORD → ZRH May 18, 00:50 UTCMay 18, 08:50 UTC8h 0m
2026-05-17 SWR8T ZRH → ORD May 17, 11:45 UTCMay 17, 20:50 UTC9h 5m
2026-05-16 SWR93 GRU → ZRH May 16, 21:40 UTCMay 17, 08:00 UTC10h 20m
2026-05-16 SWR93 GRU → ZRH May 16, 16:45 UTCMay 16, 19:15 UTC2h 30m
2026-05-16 SWR92 GRU → EZE May 16, 11:21 UTCMay 16, 14:01 UTC2h 40m
2026-05-15 SWR92 GRU → EZE May 15, 21:10 UTCMay 16, 08:16 UTC11h 6m
2026-05-15 SWR161 NRT → ZRH May 15, 03:20 UTCMay 15, 16:55 UTC13h 34m
2026-05-14 SWR160 ZRH → NRT May 14, 11:55 UTCMay 15, 00:50 UTC12h 55m
2026-05-13 SWR93 GRU → ZRH May 13, 21:55 UTCMay 14, 08:20 UTC10h 25m
2026-05-13 SWR93 GRU → ZRH May 13, 16:55 UTCMay 13, 19:10 UTC2h 15m
2026-05-13 SWR92 GRU → EZE May 13, 11:30 UTCMay 13, 14:15 UTC2h 45m
2026-05-12 SWR92 GRU → EZE May 12, 21:10 UTCMay 13, 08:45 UTC11h 35m
2026-05-12 SWR39 SFO → ZRH May 12, 02:55 UTCMay 12, 13:30 UTC10h 35m
2026-05-11 SWR35G ZRH → SFO May 11, 12:15 UTCMay 11, 22:35 UTC10h 20m
2026-05-10 SWR139 HKG → ZRH May 10, 20:50 UTCMay 11, 04:20 UTC7h 30m
2026-05-10 SWR139 HKG → ZRH May 10, 15:39 UTCMay 10, 15:55 UTC15m
2026-05-10 SWR138 ZRH → HKG May 10, 07:30 UTCMay 10, 07:55 UTC25m
2026-05-09 SWR138 ZRH → HKG May 9, 20:55 UTCMay 10, 05:20 UTC8h 25m
2026-05-09 SWR39 SFO → ZRH May 9, 02:55 UTCMay 9, 13:20 UTC10h 25m
2026-05-08 SWR35G ZRH → SFO May 8, 11:44 UTCMay 8, 23:00 UTC11h 15m
2026-05-07 SWR139 HKG → ZRH May 7, 20:50 UTCMay 8, 04:19 UTC7h 30m
2026-05-07 SWR139 HKG → ZRH May 7, 15:35 UTCMay 7, 15:50 UTC15m
2026-05-07 SWR138 ZRH → HKG May 7, 07:20 UTCMay 7, 07:45 UTC25m
2026-05-06 SWR138 ZRH → HKG May 6, 20:36 UTCMay 7, 05:30 UTC8h 54m
2026-05-06 SWR161 NRT → ZRH May 6, 02:40 UTCMay 6, 16:30 UTC13h 50m
2026-05-05 SWR160 ZRH → NRT May 5, 11:30 UTCMay 5, 23:50 UTC12h 20m
2026-05-04 SWR93 GRU → ZRH May 4, 21:45 UTCMay 5, 07:50 UTC10h 5m
2026-05-03 SWR92 GRU → EZE May 3, 21:05 UTCMay 4, 08:55 UTC11h 50m
2026-05-03 SWR161 NRT → ZRH May 3, 02:20 UTCMay 3, 16:25 UTC14h 4m
2026-05-02 SWR160 ZRH → NRT May 2, 11:25 UTCMay 2, 23:55 UTC12h 30m
2026-05-01 SWR93 GRU → ZRH May 1, 21:55 UTCMay 2, 08:20 UTC10h 25m

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 4h ago.
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 16 distinct callsigns, including SWR139, SWR138, SWR39, SWR92, SWR93.