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 59m ago
Flights observed
176
Distinct callsigns
18
Country
CH
Last broadcast
59m ago

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
SWR177 - 19 2026-07-11
SWR161 - 19 2026-07-04
SWR176 - 15 2026-07-09
SWR138 - 15 2026-07-14
SWR139 Swiss International Air Lines 12 2026-05-12
SWR65 - 11 2026-07-12
SWR64E - 11 2026-07-11
SWR160 - 11 2026-07-03
SWR181 - 9 2026-07-09
SWR41G - 8 2026-06-24
SWR40 - 8 2026-06-23
SWR180 - 8 2026-07-08
SWR93 - 7 2026-07-05
SWR92 - 7 2026-07-04
SWR9G - 4 2026-07-07
SWR8T - 4 2026-07-06
SWR39 - 4 2026-07-13
SWR35G - 4 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-06-23 SWR40 - Jun 23, 12:09 UTCJun 23, 23:34 UTC11h 25m
2026-06-23 SWR65 - Jun 23, 00:04 UTCJun 23, 08:50 UTC8h 45m
2026-06-22 SWR64E ZRH → MIA Jun 22, 11:54 UTCJun 22, 21:25 UTC9h 30m
2026-06-22 SWR65 - Jun 22, 00:29 UTCJun 22, 09:00 UTC8h 30m
2026-06-21 SWR64E ZRH → MIA Jun 21, 12:24 UTCJun 21, 22:00 UTC9h 35m
2026-06-20 SWR93 - Jun 20, 21:55 UTCJun 21, 08:44 UTC10h 50m
2026-06-20 SWR93 - Jun 20, 16:34 UTCJun 20, 18:54 UTC2h 20m
2026-06-20 SWR92 - Jun 20, 11:30 UTCJun 20, 13:44 UTC2h 15m
2026-06-19 SWR92 - Jun 19, 22:09 UTCJun 20, 08:59 UTC10h 50m
2026-06-19 SWR181 STR → ZRH Jun 19, 19:14 UTCJun 19, 19:49 UTC35m
2026-06-19 SWR181 - Jun 19, 06:35 UTCJun 19, 17:59 UTC11h 25m
2026-06-18 SWR180 - Jun 18, 16:25 UTCJun 19, 01:04 UTC8h 39m
2026-06-18 SWR41G - Jun 18, 02:55 UTCJun 18, 13:30 UTC10h 35m
2026-06-17 SWR40 - Jun 17, 12:00 UTCJun 17, 23:15 UTC11h 15m
2026-06-16 SWR177 - Jun 16, 15:55 UTCJun 17, 04:15 UTC12h 21m
2026-06-15 SWR176 - Jun 15, 21:04 UTCJun 16, 08:39 UTC11h 35m
2026-06-15 SWR161 - Jun 15, 02:44 UTCJun 15, 16:24 UTC13h 40m
2026-06-14 SWR160 - Jun 14, 12:20 UTCJun 15, 00:35 UTC12h 15m
2026-06-13 SWR177 - Jun 13, 15:55 UTCJun 14, 04:25 UTC12h 30m
2026-06-12 SWR176 - Jun 12, 21:00 UTCJun 13, 08:30 UTC11h 29m

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 59m ago.
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 SWR177, SWR161, SWR176, SWR138, SWR139.