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sensors Mode-S transponder

4B1918

ICAO 24-bit transponder address · allocated to Switzerland

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

Hex
4B1918
Octal
22614430
Decimal
4,921,624
Country
CH
Tail
HB-JNC
Type
B77W
No current signal · last broadcast Jul 26, 16:05 UTC
Flights observed
198
Distinct callsigns
18
Country
CH
Last broadcast
Jul 26, 16:05 UTC

Last known position

Most recent position reported by Mode-S 4B1918.

Country allocation

The ICAO 24-bit address 4B1918 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
SWR176 - 17 2026-07-15
SWR177 - 15 2026-07-16
SWR139 Swiss International Air Lines 15 2026-07-26
SWR138 Swiss International Air Lines 15 2026-07-26
SWR92 - 14 2026-07-18
SWR93 Swiss International Air Lines 13 2026-07-19
SWR65 - 13 2026-07-23
SWR161 - 13 2026-07-12
SWR40 - 11 2026-07-23
SWR160 - 11 2026-07-11
SWR64E - 10 2026-07-22
SWR41G Swiss International Air Lines 10 2026-07-24
SWR180 Swiss International Air Lines 9 2026-07-24
SWR181 Swiss International Air Lines 8 2026-07-25
SWR39 - 7 2026-06-30
SWR35G - 7 2026-06-29
SWR9G Swiss International Air Lines 5 2026-07-22
SWR8T - 5 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR139 HKG → ZRH Jul 26, 15:50 UTCJul 26, 16:05 UTC15m
2026-07-26 SWR138 ZRH → HKG Jul 26, 08:15 UTCJul 26, 08:30 UTC15m
2026-07-25 SWR138 ZRH → HKG Jul 25, 21:10 UTCJul 26, 00:45 UTC3h 35m
2026-07-25 SWR181 BKK → ZRH Jul 25, 08:00 UTCJul 25, 18:35 UTC10h 35m
2026-07-24 SWR180 ZRH → BKK Jul 24, 16:25 UTCJul 25, 02:25 UTC10h 0m
2026-07-24 SWR41G LAX → ZRH Jul 24, 03:05 UTCJul 24, 13:20 UTC10h 15m
2026-07-23 SWR40 - Jul 23, 12:25 UTCJul 23, 23:50 UTC11h 25m
2026-07-23 SWR65 - Jul 23, 00:20 UTCJul 23, 09:15 UTC8h 55m
2026-07-22 SWR64E ZRH → MIA Jul 22, 12:30 UTCJul 22, 21:35 UTC9h 5m
2026-07-22 SWR9G ORD → ZRH Jul 22, 01:10 UTCJul 22, 03:35 UTC2h 25m
2026-07-21 SWR8T ZRH → ORD Jul 21, 11:45 UTCJul 21, 20:35 UTC8h 50m
2026-07-21 SWR65 - Jul 21, 00:05 UTCJul 21, 08:55 UTC8h 50m
2026-07-20 SWR64E - Jul 20, 11:50 UTCJul 20, 20:50 UTC9h 0m
2026-07-19 SWR93 GRU → ZRH Jul 19, 21:50 UTCJul 20, 08:15 UTC10h 25m
2026-07-18 SWR92 - Jul 18, 21:20 UTCJul 19, 08:30 UTC11h 10m
2026-07-18 SWR41G LAX → ZRH Jul 18, 02:55 UTCJul 18, 13:25 UTC10h 30m
2026-07-17 SWR40 - Jul 17, 11:55 UTCJul 17, 23:10 UTC11h 15m
2026-07-16 SWR177 - Jul 16, 16:09 UTCJul 17, 04:10 UTC12h 0m
2026-07-15 SWR176 - Jul 15, 21:50 UTCJul 16, 09:55 UTC12h 5m
2026-07-15 SWR181 - Jul 15, 06:15 UTCJul 15, 17:20 UTC11h 5m
2026-07-14 SWR180 - Jul 14, 16:45 UTCJul 15, 02:55 UTC10h 9m
2026-07-13 SWR177 - Jul 13, 15:50 UTCJul 14, 04:05 UTC12h 15m
2026-07-12 SWR176 - Jul 12, 21:30 UTCJul 13, 09:10 UTC11h 40m
2026-07-12 SWR161 - Jul 12, 02:20 UTCJul 12, 16:10 UTC13h 50m
2026-07-11 SWR160 ZRH → NRT Jul 11, 11:35 UTCJul 11, 23:40 UTC12h 5m
2026-07-11 SWR9G - Jul 11, 00:55 UTCJul 11, 08:50 UTC7h 55m
2026-07-10 SWR8T ZRH → ORD Jul 10, 11:40 UTCJul 10, 20:35 UTC8h 55m
2026-07-10 SWR65 - Jul 10, 00:05 UTCJul 10, 09:05 UTC9h 0m
2026-07-09 SWR64E - Jul 9, 11:35 UTCJul 9, 21:05 UTC9h 30m
2026-07-08 SWR93 - Jul 8, 21:45 UTCJul 9, 08:30 UTC10h 45m
2026-07-08 SWR93 - Jul 8, 16:45 UTCJul 8, 19:00 UTC2h 15m
2026-07-08 SWR92 - Jul 8, 13:25 UTCJul 8, 14:05 UTC40m
2026-07-08 SWR92 - Jul 8, 11:30 UTCJul 8, 12:30 UTC1h 0m
2026-07-07 SWR92 - Jul 7, 21:10 UTCJul 8, 08:05 UTC10h 55m
2026-07-07 SWR41G - Jul 7, 03:00 UTCJul 7, 13:25 UTC10h 25m
2026-07-06 SWR40 - Jul 6, 12:05 UTCJul 6, 23:35 UTC11h 30m
2026-07-06 SWR9G - Jul 6, 00:45 UTCJul 6, 08:30 UTC7h 45m
2026-07-05 SWR8T ZRH → ORD Jul 5, 12:15 UTCJul 5, 21:00 UTC8h 45m
2026-07-05 SWR65 - Jul 5, 00:15 UTCJul 5, 08:45 UTC8h 30m
2026-07-04 SWR64E ZRH → MIA Jul 4, 11:50 UTCJul 4, 21:15 UTC9h 25m
2026-07-03 SWR93 - Jul 3, 21:50 UTCJul 4, 08:45 UTC10h 55m
2026-07-02 SWR92 - Jul 2, 21:15 UTCJul 3, 08:20 UTC11h 5m
2026-07-01 SWR139 - Jul 1, 17:55 UTCJul 2, 04:05 UTC10h 10m
2026-07-01 SWR139 - Jul 1, 15:40 UTCJul 1, 15:55 UTC15m
2026-06-30 SWR138 ZRH → HKG Jun 30, 22:40 UTCJul 1, 09:50 UTC11h 10m
2026-06-30 SWR39 SFO → ZRH Jun 30, 03:05 UTCJun 30, 13:30 UTC10h 25m
2026-06-29 SWR35G - Jun 29, 12:24 UTCJun 29, 23:19 UTC10h 55m
2026-06-28 SWR93 - Jun 28, 22:04 UTCJun 29, 08:50 UTC10h 45m
2026-06-27 SWR92 - Jun 27, 21:29 UTCJun 28, 08:50 UTC11h 20m
2026-06-27 SWR161 - Jun 27, 02:55 UTCJun 27, 16:39 UTC13h 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-JNC page for operator, model, and routing details .

Mode-S 4B1918 frequently asked

What is Mode-S code 4B1918?
4B1918 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JNC.
Where is Mode-S 4B1918 registered?
Mode-S code 4B1918 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1918 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1918, octal 22614430, decimal 4,921,624.
What flights does 4B1918 operate?
Mode-S 4B1918 has broadcast 18 distinct callsigns, including SWR176, SWR177, SWR139, SWR138, SWR92.