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
No current signal · last broadcast 3h ago
Flights observed
175
Distinct callsigns
20
Country
CH
Last broadcast
3h 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 20 distinct

Callsign Airline Flights Last seen
SWR40 - 15 2026-07-08
SWR181 - 15 2026-07-10
SWR177 - 14 2026-07-01
SWR139 - 14 2026-07-11
SWR41G - 13 2026-07-09
SWR180 - 13 2026-07-09
SWR138 - 13 2026-07-11
SWR93 - 12 2026-07-07
SWR92 - 12 2026-07-13
SWR176 - 10 2026-06-30
SWR64E Swiss International Air Lines 8 2026-06-18
SWR161 - 7 2026-07-13
SWR160 - 7 2026-07-12
SWR65 - 6 2026-06-19
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
2026-07-13 SWR92 - Jul 13, 21:05 UTCJul 13, 23:05 UTC2h 0m
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
2026-06-25 SWR181 - Jun 25, 06:20 UTCJun 25, 17:09 UTC10h 50m
2026-06-24 SWR180 - Jun 24, 16:29 UTCJun 25, 02:59 UTC10h 30m
2026-06-24 SWR39 SFO → ZRH Jun 24, 02:54 UTCJun 24, 13:34 UTC10h 40m
2026-06-23 SWR35G - Jun 23, 11:45 UTCJun 23, 23:10 UTC11h 25m
2026-06-22 SWR93 - Jun 22, 22:30 UTCJun 23, 09:20 UTC10h 50m
2026-06-21 SWR92 - Jun 21, 21:14 UTCJun 22, 08:19 UTC11h 5m
2026-06-21 SWR181 - Jun 21, 06:14 UTCJun 21, 17:24 UTC11h 10m
2026-06-20 SWR180 ZRH → BKK Jun 20, 16:39 UTCJun 21, 02:45 UTC10h 5m
2026-06-20 SWR41G - Jun 20, 02:54 UTCJun 20, 13:29 UTC10h 35m
2026-06-19 SWR40 - Jun 19, 12:29 UTCJun 19, 23:44 UTC11h 15m
2026-06-19 SWR65 - Jun 19, 00:05 UTCJun 19, 08:34 UTC8h 29m
2026-06-18 SWR64E ZRH → MIA Jun 18, 11:30 UTCJun 18, 21:05 UTC9h 35m
2026-06-18 SWR139 - Jun 18, 00:00 UTCJun 18, 04:10 UTC4h 10m
2026-06-17 SWR139 - Jun 17, 15:55 UTCJun 17, 16:10 UTC15m
2026-06-17 SWR138 - Jun 17, 07:45 UTCJun 17, 08:15 UTC30m
2026-06-16 SWR138 - Jun 16, 20:50 UTCJun 17, 05:10 UTC8h 20m
2026-06-16 SWR41G - Jun 16, 04:25 UTCJun 16, 15:00 UTC10h 35m
2026-06-15 SWR40 ZRH → LAX Jun 15, 11:54 UTCJun 15, 22:45 UTC10h 50m
2026-06-14 SWR177 - Jun 14, 15:50 UTCJun 15, 04:20 UTC12h 29m
2026-06-13 SWR176 - Jun 13, 21:05 UTCJun 14, 08:50 UTC11h 45m

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 3h 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 20 distinct callsigns, including SWR40, SWR181, SWR177, SWR139, SWR41G.