Apparatus

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sensors Mode-S transponder

4B191F

ICAO 24-bit transponder address · allocated to Switzerland

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

Hex
4B191F
Octal
22614437
Decimal
4,921,631
Country
CH
Tail
HB-JNJ
Type
B77W
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
196
Distinct callsigns
18
Country
CH
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S 4B191F.

Country allocation

The ICAO 24-bit address 4B191F 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 18 distinct

Callsign Airline Flights Last seen
SWR161 Swiss International Air Lines 22 2026-07-26
SWR177 Swiss International Air Lines 20 2026-07-18
SWR176 - 16 2026-07-17
SWR138 Swiss International Air Lines 16 2026-07-26
SWR160 Swiss International Air Lines 14 2026-07-25
SWR139 - 14 2026-07-14
SWR65 - 11 2026-07-12
SWR64E - 11 2026-07-11
SWR92 Swiss International Air Lines 10 2026-07-23
SWR181 - 10 2026-07-17
SWR93 Swiss International Air Lines 9 2026-07-24
SWR180 - 9 2026-07-16
SWR41G - 8 2026-06-24
SWR40 - 8 2026-06-23
SWR39 - 5 2026-07-16
SWR35G - 5 2026-07-15
SWR9G - 4 2026-07-07
SWR8T - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR138 ZRH → HKG Jul 26, 21:00 UTCJul 26, 21:45 UTC45m
2026-07-26 SWR161 NRT → ZRH Jul 26, 02:35 UTCJul 26, 16:15 UTC13h 41m
2026-07-25 SWR160 ZRH → NRT Jul 25, 11:50 UTCJul 25, 23:55 UTC12h 5m
2026-07-24 SWR93 GRU → ZRH Jul 24, 22:00 UTCJul 25, 08:40 UTC10h 40m
2026-07-23 SWR92 ZRH → GRU Jul 23, 21:05 UTCJul 24, 08:05 UTC11h 0m
2026-07-23 SWR161 NRT → ZRH Jul 23, 02:20 UTCJul 23, 15:45 UTC13h 25m
2026-07-22 SWR160 - Jul 22, 11:45 UTCJul 22, 23:50 UTC12h 5m
2026-07-21 SWR93 GRU → ZRH Jul 21, 22:00 UTCJul 22, 00:45 UTC2h 45m
2026-07-21 SWR92 - Jul 21, 02:00 UTCJul 21, 08:35 UTC6h 35m
2026-07-20 SWR92 - Jul 20, 21:15 UTCJul 20, 23:05 UTC1h 50m
2026-07-20 SWR161 - Jul 20, 02:30 UTCJul 20, 16:20 UTC13h 50m
2026-07-19 SWR160 ZRH → NRT Jul 19, 12:00 UTCJul 19, 23:45 UTC11h 45m
2026-07-18 SWR177 SIN → ZRH Jul 18, 16:00 UTCJul 19, 04:05 UTC12h 5m
2026-07-17 SWR176 - Jul 17, 21:20 UTCJul 18, 09:25 UTC12h 6m
2026-07-17 SWR181 - Jul 17, 06:25 UTCJul 17, 17:05 UTC10h 40m
2026-07-16 SWR180 ZRH → BKK Jul 16, 16:25 UTCJul 17, 02:45 UTC10h 20m
2026-07-16 SWR39 SFO → ZRH Jul 16, 03:10 UTCJul 16, 13:30 UTC10h 20m
2026-07-15 SWR35G - Jul 15, 11:50 UTCJul 15, 23:25 UTC11h 35m
2026-07-14 SWR139 - Jul 14, 18:05 UTCJul 15, 04:15 UTC10h 9m
2026-07-14 SWR139 - Jul 14, 16:00 UTCJul 14, 16:15 UTC15m
2026-07-14 SWR138 - Jul 14, 08:10 UTCJul 14, 08:45 UTC35m
2026-07-13 SWR138 - Jul 13, 21:15 UTCJul 14, 00:45 UTC3h 30m
2026-07-13 SWR39 SFO → ZRH Jul 13, 02:45 UTCJul 13, 13:05 UTC10h 20m
2026-07-12 SWR35G ZRH → SFO Jul 12, 11:50 UTCJul 12, 23:20 UTC11h 30m
2026-07-12 SWR65 - Jul 12, 00:05 UTCJul 12, 08:55 UTC8h 50m
2026-07-11 SWR64E ZRH → MIA Jul 11, 12:10 UTCJul 11, 21:25 UTC9h 15m
2026-07-11 SWR177 - Jul 11, 01:35 UTCJul 11, 04:10 UTC2h 35m
2026-07-10 SWR177 - Jul 10, 15:45 UTCJul 11, 01:30 UTC9h 46m
2026-07-09 SWR176 - Jul 9, 21:05 UTCJul 10, 08:45 UTC11h 40m
2026-07-09 SWR181 - Jul 9, 06:15 UTCJul 9, 17:20 UTC11h 5m
2026-07-08 SWR180 ZRH → BKK Jul 8, 16:35 UTCJul 9, 02:55 UTC10h 20m
2026-07-08 SWR39 - Jul 8, 03:20 UTCJul 8, 13:45 UTC10h 25m
2026-07-07 SWR35G - Jul 7, 11:55 UTCJul 7, 23:25 UTC11h 30m
2026-07-07 SWR9G - Jul 7, 00:45 UTCJul 7, 08:40 UTC7h 55m
2026-07-06 SWR8T ZRH → ORD Jul 6, 12:20 UTCJul 6, 21:15 UTC8h 55m
2026-07-05 SWR93 - Jul 5, 21:45 UTCJul 6, 08:30 UTC10h 45m
2026-07-04 SWR92 - Jul 4, 21:05 UTCJul 5, 08:15 UTC11h 10m
2026-07-04 SWR161 - Jul 4, 03:00 UTCJul 4, 17:10 UTC14h 10m
2026-07-03 SWR160 ZRH → NRT Jul 3, 12:55 UTCJul 4, 00:50 UTC11h 55m
2026-07-02 SWR177 - Jul 2, 16:05 UTCJul 3, 04:25 UTC12h 20m
2026-07-01 SWR176 - Jul 1, 21:15 UTCJul 2, 09:10 UTC11h 55m
2026-06-29 SWR177 - Jun 29, 16:15 UTCJun 30, 04:25 UTC12h 11m
2026-06-28 SWR176 - Jun 28, 21:40 UTCJun 29, 09:20 UTC11h 40m
2026-06-28 SWR161 - Jun 28, 02:29 UTCJun 28, 16:55 UTC14h 25m
2026-06-27 SWR160 ZRH → NRT Jun 27, 11:44 UTCJun 27, 23:45 UTC12h 0m
2026-06-27 SWR65 - Jun 27, 00:05 UTCJun 27, 08:20 UTC8h 15m
2026-06-26 SWR64E ZRH → MIA Jun 26, 11:30 UTCJun 26, 21:10 UTC9h 40m
2026-06-25 SWR177 - Jun 25, 15:59 UTCJun 26, 04:10 UTC12h 10m
2026-06-24 SWR176 - Jun 24, 21:04 UTCJun 25, 09:14 UTC12h 10m
2026-06-24 SWR41G - Jun 24, 02:54 UTCJun 24, 13:30 UTC10h 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-JNJ page for operator, model, and routing details .

Mode-S 4B191F frequently asked

What is Mode-S code 4B191F?
4B191F is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JNJ.
Where is Mode-S 4B191F registered?
Mode-S code 4B191F is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B191F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B191F, octal 22614437, decimal 4,921,631.
What flights does 4B191F operate?
Mode-S 4B191F has broadcast 18 distinct callsigns, including SWR161, SWR177, SWR176, SWR138, SWR160.