sensors Mode-S transponder

4B191D

ICAO 24-bit transponder address · allocated to Switzerland

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

Hex
4B191D
Octal
22614435
Decimal
4,921,629
Country
CH
Tail
HB-JNH
Type
B77W
No current signal · last broadcast 53m ago
Flights observed
101
Distinct callsigns
19
Country
CH
Last broadcast
53m ago

Last known position

Most recent position reported by Mode-S 4B191D.

Country allocation

The ICAO 24-bit address 4B191D 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 19 distinct

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SWR180 ZRH → BKK May 29, 16:35 UTCMay 30, 00:55 UTC8h 20m
2026-05-29 SWR39 SFO → ZRH May 29, 02:45 UTCMay 29, 13:35 UTC10h 50m
2026-05-28 SWR35G ZRH → SFO May 28, 12:00 UTCMay 28, 23:20 UTC11h 20m
2026-05-27 SWR177 SIN → ZRH May 27, 15:55 UTCMay 28, 04:35 UTC12h 40m
2026-05-26 SWR176 ZRH → SIN May 26, 21:00 UTCMay 27, 08:35 UTC11h 36m
2026-05-26 SWR181 BKK → ZRH May 26, 06:04 UTCMay 26, 17:30 UTC11h 25m
2026-05-25 SWR180 ZRH → BKK May 25, 16:25 UTCMay 26, 02:29 UTC10h 5m
2026-05-25 SWR41G LAX → ZRH May 25, 02:40 UTCMay 25, 13:20 UTC10h 40m
2026-05-24 SWR40 ZRH → LAX May 24, 12:25 UTCMay 24, 23:46 UTC11h 21m
2026-05-24 SWR65 MIA → ZRH May 24, 00:05 UTCMay 24, 08:55 UTC8h 50m
2026-05-23 SWR64E ZRH → MIA May 23, 11:35 UTCMay 23, 21:20 UTC9h 46m
2026-05-22 SWR93 GRU → ZRH May 22, 21:55 UTCMay 23, 08:35 UTC10h 40m
2026-05-21 SWR92 ZRH → GRU May 21, 21:15 UTCMay 22, 08:30 UTC11h 15m
2026-05-21 SWR39 SFO → ZRH May 21, 02:55 UTCMay 21, 13:20 UTC10h 25m
2026-05-20 SWR35G ZRH → SFO May 20, 11:40 UTCMay 20, 22:45 UTC11h 5m
2026-05-19 SWR65 MIA → ZRH May 19, 23:55 UTCMay 20, 08:40 UTC8h 46m
2026-05-19 SWR64E ZRH → MIA May 19, 11:35 UTCMay 19, 21:20 UTC9h 45m
2026-05-18 SWR93 GRU → ZRH May 18, 21:50 UTCMay 19, 08:35 UTC10h 45m
2026-05-17 SWR92 ZRH → GRU May 17, 21:01 UTCMay 18, 08:10 UTC11h 10m
2026-05-17 SWR161 NRT → ZRH May 17, 02:45 UTCMay 17, 17:01 UTC14h 15m
2026-05-16 SWR160 ZRH → NRT May 16, 11:35 UTCMay 17, 00:25 UTC12h 50m
2026-05-16 SWR139 HKG → ZRH May 16, 00:20 UTCMay 16, 04:15 UTC3h 55m
2026-05-15 SWR139 HKG → ZRH May 15, 15:55 UTCMay 15, 16:05 UTC10m
2026-05-15 SWR138 ZRH → HKG May 15, 07:55 UTCMay 15, 08:20 UTC25m
2026-05-14 SWR138 ZRH → HKG May 14, 21:05 UTCMay 15, 06:10 UTC9h 5m
2026-05-14 SWR161 NRT → ZRH May 14, 02:35 UTCMay 14, 16:40 UTC14h 5m
2026-05-13 SWR160 ZRH → NRT May 13, 11:35 UTCMay 14, 00:20 UTC12h 45m
2026-05-13 SWR139 HKG → ZRH May 13, 00:05 UTCMay 13, 04:10 UTC4h 5m
2026-05-12 SWR139 HKG → ZRH May 12, 15:35 UTCMay 12, 15:50 UTC15m
2026-05-12 SWR138 ZRH → HKG May 12, 07:35 UTCMay 12, 08:10 UTC35m
2026-05-11 SWR138 ZRH → HKG May 11, 21:00 UTCMay 12, 05:45 UTC8h 45m
2026-05-11 SWR161 NRT → ZRH May 11, 02:25 UTCMay 11, 16:30 UTC14h 5m
2026-05-10 SWR160 ZRH → NRT May 10, 11:30 UTCMay 10, 23:39 UTC12h 10m
2026-05-10 SWR139 HKG → ZRH May 10, 00:00 UTCMay 10, 04:15 UTC4h 15m
2026-05-09 SWR139 HKG → ZRH May 9, 15:30 UTCMay 9, 15:50 UTC20m
2026-05-09 SWR138 ZRH → HKG May 9, 07:50 UTCMay 9, 08:15 UTC25m
2026-05-08 SWR138 ZRH → HKG May 8, 21:00 UTCMay 9, 05:35 UTC8h 35m
2026-05-07 SWR139 HKG → ZRH May 7, 02:10 UTCMay 7, 04:10 UTC2h 0m
2026-05-06 SWR139 HKG → ZRH May 6, 15:30 UTCMay 6, 15:45 UTC15m
2026-05-05 SWR138 ZRH → HKG May 5, 20:50 UTCMay 6, 08:05 UTC11h 15m
2026-05-05 SWR181 BKK → ZRH May 5, 06:15 UTCMay 5, 17:35 UTC11h 20m
2026-05-04 SWR180 ZRH → BKK May 4, 16:45 UTCMay 5, 03:05 UTC10h 21m
2026-05-04 SWR41G LAX → ZRH May 4, 02:54 UTCMay 4, 13:35 UTC10h 40m
2026-05-03 SWR40 ZRH → LAX May 3, 12:05 UTCMay 3, 23:25 UTC11h 20m
2026-05-03 SWR65 MIA → ZRH May 3, 00:55 UTCMay 3, 09:35 UTC8h 39m
2026-05-02 SWR64E ZRH → MIA May 2, 11:35 UTCMay 2, 21:35 UTC10h 0m
2026-05-02 SWR65 MIA → ZRH May 2, 00:15 UTCMay 2, 08:50 UTC8h 36m
2026-05-01 SWR64E ZRH → MIA May 1, 12:00 UTCMay 1, 21:40 UTC9h 40m
2026-04-30 SWR93 GRU → ZRH Apr 30, 22:15 UTCMay 1, 08:45 UTC10h 30m
2026-04-29 SWR92 GRU → EZE Apr 29, 21:10 UTCApr 30, 08:30 UTC11h 19m

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

Mode-S 4B191D frequently asked

What is Mode-S code 4B191D?
4B191D is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JNH.
Where is Mode-S 4B191D registered?
Mode-S code 4B191D is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B191D broadcasting right now?
No active broadcast right now. Last signal was 53m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B191D, octal 22614435, decimal 4,921,629.
What flights does 4B191D operate?
Mode-S 4B191D has broadcast 19 distinct callsigns, including SWR40, SWR177, SWR139, SWR41G, SWR181.