Apparatus

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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 3h ago
Flights observed
177
Distinct callsigns
18
Country
CH
Last broadcast
3h ago

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 - 16 2026-07-12
SWR177 - 14 2026-07-13
SWR139 - 14 2026-07-01
SWR92 - 13 2026-07-08
SWR161 - 13 2026-07-12
SWR138 - 13 2026-06-30
SWR93 - 12 2026-07-08
SWR65 - 11 2026-07-10
SWR160 - 11 2026-07-11
SWR40 - 9 2026-07-06
SWR64E - 8 2026-07-09
SWR41G - 8 2026-07-07
SWR39 - 7 2026-06-30
SWR35G - 7 2026-06-29
SWR180 Swiss International Air Lines 7 2026-06-07
SWR181 Swiss International Air Lines 6 2026-06-07
SWR9G - 4 2026-07-11
SWR8T - 4 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-06-26 SWR160 ZRH → NRT Jun 26, 12:19 UTCJun 27, 00:39 UTC12h 20m
2026-06-25 SWR93 - Jun 25, 21:50 UTCJun 26, 08:34 UTC10h 45m
2026-06-24 SWR92 - Jun 24, 21:14 UTCJun 25, 08:20 UTC11h 5m
2026-06-22 SWR177 - Jun 22, 15:54 UTCJun 23, 04:09 UTC12h 15m
2026-06-21 SWR176 - Jun 21, 21:14 UTCJun 22, 08:44 UTC11h 30m
2026-06-21 SWR161 - Jun 21, 02:30 UTCJun 21, 16:25 UTC13h 55m
2026-06-20 SWR160 ZRH → NRT Jun 20, 12:14 UTCJun 20, 23:55 UTC11h 40m
2026-06-19 SWR177 - Jun 19, 15:59 UTCJun 20, 04:29 UTC12h 30m
2026-06-18 SWR176 - Jun 18, 21:10 UTCJun 19, 08:59 UTC11h 49m
2026-06-18 SWR161 - Jun 18, 02:45 UTCJun 18, 16:40 UTC13h 55m
2026-06-17 SWR160 ZRH → NRT Jun 17, 11:25 UTCJun 17, 23:50 UTC12h 25m
2026-06-17 SWR65 - Jun 17, 00:00 UTCJun 17, 08:35 UTC8h 35m
2026-06-16 SWR64E ZRH → MIA Jun 16, 11:35 UTCJun 16, 21:20 UTC9h 46m
2026-06-15 SWR93 - Jun 15, 22:05 UTCJun 16, 09:00 UTC10h 55m
2026-06-14 SWR92 ZRH → GRU Jun 14, 21:00 UTCJun 15, 08:25 UTC11h 24m
2026-06-14 SWR161 NRT → ZRH Jun 14, 02:30 UTCJun 14, 16:40 UTC14h 10m
2026-06-13 SWR160 ZRH → NRT Jun 13, 11:50 UTCJun 14, 00:05 UTC12h 15m
2026-06-12 SWR177 - Jun 12, 16:05 UTCJun 13, 04:20 UTC12h 15m
2026-06-11 SWR176 ZRH → SIN Jun 11, 21:00 UTCJun 12, 08:50 UTC11h 51m
2026-06-11 SWR161 NRT → ZRH Jun 11, 02:25 UTCJun 11, 16:00 UTC13h 35m
2026-06-10 SWR160 ZRH → NRT Jun 10, 11:45 UTCJun 10, 23:55 UTC12h 10m

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 3h ago.
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, SWR92, SWR161.