Apparatus

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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
Broadcasting now · callsign SWR65 · 37,000 ft
Flights observed
195
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 20:05 UTC

Current position

4B191D is currently broadcasting. Map zoomed to live position.

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 20 distinct

Callsign Airline Flights Last seen
SWR40 Swiss International Air Lines 19 2026-07-25
SWR41G Swiss International Air Lines 17 2026-07-26
SWR139 Swiss International Air Lines 16 2026-07-23
SWR93 Swiss International Air Lines 15 2026-07-20
SWR181 - 15 2026-07-10
SWR138 - 15 2026-07-23
SWR92 - 14 2026-07-19
SWR180 Swiss International Air Lines 14 2026-07-26
SWR177 - 14 2026-07-01
SWR176 - 10 2026-06-30
SWR64E - 9 2026-07-24
SWR65 Swiss International Air Lines 7 2026-07-25
SWR161 - 7 2026-07-13
SWR160 - 7 2026-07-12
SWR39 - 6 2026-06-29
SWR35G - 6 2026-06-28
SWR9G Swiss International Air Lines 1 2026-04-22
SWR8T Swiss International Air Lines 1 2026-04-21
SWR7092 Swiss International Air Lines 1 2026-06-27
SWR5141 Swiss International Air Lines 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR180 ZRH → BKK Jul 26, 16:35 UTCJul 26, 20:05 UTC3h 30m
2026-07-26 SWR41G LAX → ZRH Jul 26, 02:45 UTCJul 26, 12:50 UTC10h 6m
2026-07-25 SWR40 ZRH → LAX Jul 25, 11:55 UTCJul 25, 23:20 UTC11h 25m
2026-07-25 SWR65 MIA → ZRH Jul 25, 00:00 UTCJul 25, 08:40 UTC8h 40m
2026-07-24 SWR64E ZRH → MIA Jul 24, 11:45 UTCJul 24, 21:05 UTC9h 20m
2026-07-23 SWR139 HKG → ZRH Jul 23, 18:15 UTCJul 24, 04:15 UTC10h 0m
2026-07-23 SWR139 HKG → ZRH Jul 23, 16:00 UTCJul 23, 16:15 UTC15m
2026-07-23 SWR138 - Jul 23, 07:35 UTCJul 23, 08:15 UTC40m
2026-07-22 SWR138 - Jul 22, 21:00 UTCJul 23, 00:25 UTC3h 25m
2026-07-22 SWR41G LAX → ZRH Jul 22, 03:05 UTCJul 22, 13:30 UTC10h 25m
2026-07-21 SWR40 ZRH → LAX Jul 21, 12:10 UTCJul 21, 23:25 UTC11h 15m
2026-07-20 SWR93 GRU → ZRH Jul 20, 21:45 UTCJul 21, 08:15 UTC10h 29m
2026-07-19 SWR92 - Jul 19, 21:20 UTCJul 20, 08:30 UTC11h 10m
2026-07-19 SWR41G LAX → ZRH Jul 19, 04:35 UTCJul 19, 15:10 UTC10h 35m
2026-07-18 SWR40 - Jul 18, 15:20 UTCJul 19, 02:25 UTC11h 5m
2026-07-17 SWR93 - Jul 17, 21:39 UTCJul 18, 08:10 UTC10h 31m
2026-07-16 SWR92 - Jul 16, 21:25 UTCJul 17, 08:49 UTC11h 25m
2026-07-16 SWR41G - Jul 16, 02:55 UTCJul 16, 13:30 UTC10h 35m
2026-07-15 SWR40 - Jul 15, 12:50 UTCJul 16, 00:05 UTC11h 15m
2026-07-14 SWR93 - Jul 14, 21:40 UTCJul 15, 08:10 UTC10h 29m
2026-07-13 SWR92 - Jul 13, 21:05 UTCJul 14, 08:25 UTC11h 20m
2026-07-13 SWR161 - Jul 13, 02:45 UTCJul 13, 16:50 UTC14h 5m
2026-07-12 SWR160 ZRH → NRT Jul 12, 12:35 UTCJul 13, 00:30 UTC11h 55m
2026-07-11 SWR139 - Jul 11, 17:50 UTCJul 12, 04:10 UTC10h 20m
2026-07-11 SWR139 - Jul 11, 15:45 UTCJul 11, 16:00 UTC15m
2026-07-11 SWR138 - Jul 11, 08:10 UTCJul 11, 08:30 UTC20m
2026-07-11 SWR138 - Jul 11, 07:55 UTCJul 11, 08:05 UTC10m
2026-07-10 SWR138 - Jul 10, 21:15 UTCJul 11, 00:35 UTC3h 20m
2026-07-10 SWR181 - Jul 10, 06:10 UTCJul 10, 17:30 UTC11h 20m
2026-07-09 SWR180 - Jul 9, 16:30 UTCJul 10, 02:45 UTC10h 15m
2026-07-09 SWR41G - Jul 9, 02:55 UTCJul 9, 13:35 UTC10h 40m
2026-07-08 SWR40 - Jul 8, 12:30 UTCJul 8, 23:40 UTC11h 10m
2026-07-07 SWR93 - Jul 7, 21:50 UTCJul 8, 08:35 UTC10h 45m
2026-07-06 SWR92 - Jul 6, 21:15 UTCJul 7, 08:10 UTC10h 55m
2026-07-06 SWR161 - Jul 6, 02:55 UTCJul 6, 16:55 UTC14h 0m
2026-07-05 SWR160 ZRH → NRT Jul 5, 12:25 UTCJul 6, 00:25 UTC12h 0m
2026-07-04 SWR93 - Jul 4, 21:55 UTCJul 5, 08:50 UTC10h 55m
2026-07-04 SWR93 - Jul 4, 16:35 UTCJul 4, 18:35 UTC2h 0m
2026-07-04 SWR92 - Jul 4, 11:35 UTCJul 4, 14:15 UTC2h 40m
2026-07-03 SWR92 - Jul 3, 21:05 UTCJul 4, 08:15 UTC11h 10m
2026-07-01 SWR177 - Jul 1, 15:55 UTCJul 2, 04:20 UTC12h 25m
2026-06-30 SWR176 - Jun 30, 22:40 UTCJul 1, 10:20 UTC11h 40m
2026-06-30 SWR181 - Jun 30, 06:25 UTCJun 30, 17:15 UTC10h 50m
2026-06-29 SWR180 - Jun 29, 16:39 UTCJun 30, 03:00 UTC10h 21m
2026-06-29 SWR39 SFO → ZRH Jun 29, 02:50 UTCJun 29, 13:14 UTC10h 25m
2026-06-28 SWR35G - Jun 28, 12:39 UTCJun 28, 23:04 UTC10h 25m
2026-06-27 SWR93 - Jun 27, 23:14 UTCJun 28, 09:50 UTC10h 35m
2026-06-27 SWR7092 ZRH → GRU Jun 27, 10:00 UTCJun 27, 20:55 UTC10h 55m
2026-06-26 SWR177 - Jun 26, 16:00 UTCJun 27, 04:09 UTC12h 10m
2026-06-25 SWR176 - Jun 25, 21:10 UTCJun 26, 09:00 UTC11h 50m

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?
Yes. Mode-S 4B191D is currently airborne.
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 20 distinct callsigns, including SWR40, SWR41G, SWR139, SWR93, SWR181.