Apparatus

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sensors Mode-S transponder

4B1917

ICAO 24-bit transponder address · allocated to Switzerland

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

Hex
4B1917
Octal
22614427
Decimal
4,921,623
Country
CH
Tail
HB-JNB
Type
B77W
Broadcasting now · callsign SWR9G · 20,000 ft
Flights observed
199
Distinct callsigns
18
Country
CH
Last broadcast
Jul 26, 21:10 UTC

Current position

4B1917 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B1917 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
SWR139 Swiss International Air Lines 29 2026-07-22
SWR138 - 23 2026-07-21
SWR160 Swiss International Air Lines 17 2026-07-24
SWR161 Swiss International Air Lines 14 2026-07-25
SWR93 - 11 2026-07-18
SWR92 - 11 2026-07-18
SWR180 Swiss International Air Lines 11 2026-07-20
SWR39 - 10 2026-07-09
SWR35G - 10 2026-07-08
SWR181 - 10 2026-07-21
SWR40 - 8 2026-07-19
SWR9G - 7 2026-07-12
SWR41G Swiss International Air Lines 7 2026-07-20
SWR177 Swiss International Air Lines 7 2026-07-26
SWR8T - 6 2026-07-11
SWR65 Swiss International Air Lines 6 2026-07-24
SWR64E - 6 2026-07-23
SWR176 Swiss International Air Lines 6 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR177 SIN → ZRH Jul 26, 16:10 UTCJul 26, 21:10 UTC5h 0m
2026-07-25 SWR176 ZRH → SIN Jul 25, 21:20 UTCJul 26, 09:15 UTC11h 56m
2026-07-25 SWR161 NRT → ZRH Jul 25, 02:35 UTCJul 25, 16:00 UTC13h 25m
2026-07-24 SWR160 ZRH → NRT Jul 24, 12:00 UTCJul 25, 00:00 UTC12h 0m
2026-07-24 SWR65 MIA → ZRH Jul 24, 00:00 UTCJul 24, 08:55 UTC8h 55m
2026-07-23 SWR64E ZRH → MIA Jul 23, 11:35 UTCJul 23, 20:35 UTC9h 0m
2026-07-22 SWR139 HKG → ZRH Jul 22, 18:25 UTCJul 23, 04:25 UTC10h 0m
2026-07-22 SWR139 HKG → ZRH Jul 22, 16:00 UTCJul 22, 16:15 UTC15m
2026-07-21 SWR138 - Jul 21, 21:00 UTCJul 22, 00:25 UTC3h 25m
2026-07-21 SWR181 - Jul 21, 06:20 UTCJul 21, 17:30 UTC11h 10m
2026-07-20 SWR180 ZRH → BKK Jul 20, 16:15 UTCJul 21, 02:20 UTC10h 4m
2026-07-20 SWR41G LAX → ZRH Jul 20, 02:55 UTCJul 20, 13:25 UTC10h 30m
2026-07-19 SWR40 - Jul 19, 12:25 UTCJul 19, 23:35 UTC11h 10m
2026-07-18 SWR93 GRU → ZRH Jul 18, 22:10 UTCJul 19, 08:30 UTC10h 20m
2026-07-18 SWR93 - Jul 18, 17:00 UTCJul 18, 19:15 UTC2h 15m
2026-07-18 SWR92 - Jul 18, 11:30 UTCJul 18, 13:55 UTC2h 25m
2026-07-17 SWR92 - Jul 17, 21:25 UTCJul 18, 08:35 UTC11h 11m
2026-07-15 SWR139 - Jul 15, 19:00 UTCJul 16, 04:20 UTC9h 20m
2026-07-15 SWR139 - Jul 15, 16:20 UTCJul 15, 16:30 UTC10m
2026-07-15 SWR138 - Jul 15, 07:45 UTCJul 15, 08:25 UTC40m
2026-07-14 SWR138 - Jul 14, 20:55 UTCJul 15, 00:25 UTC3h 29m
2026-07-14 SWR41G - Jul 14, 05:10 UTCJul 14, 15:45 UTC10h 35m
2026-07-13 SWR40 - Jul 13, 16:00 UTCJul 14, 03:05 UTC11h 5m
2026-07-13 SWR41G - Jul 13, 02:50 UTCJul 13, 13:15 UTC10h 25m
2026-07-12 SWR40 - Jul 12, 12:05 UTCJul 12, 23:25 UTC11h 20m
2026-07-12 SWR9G ORD → ZRH Jul 12, 00:40 UTCJul 12, 08:50 UTC8h 10m
2026-07-11 SWR8T ZRH → ORD Jul 11, 11:45 UTCJul 11, 20:20 UTC8h 35m
2026-07-10 SWR139 HKG → ZRH Jul 10, 15:40 UTCJul 11, 04:20 UTC12h 40m
2026-07-10 SWR138 - Jul 10, 07:35 UTCJul 10, 08:20 UTC45m
2026-07-09 SWR138 - Jul 9, 21:00 UTCJul 9, 23:05 UTC2h 5m
2026-07-09 SWR39 SFO → ZRH Jul 9, 02:55 UTCJul 9, 13:30 UTC10h 35m
2026-07-08 SWR35G ZRH → SFO Jul 8, 11:55 UTCJul 8, 23:10 UTC11h 15m
2026-07-07 SWR177 - Jul 7, 15:50 UTCJul 8, 04:05 UTC12h 15m
2026-07-06 SWR176 - Jul 6, 21:00 UTCJul 7, 08:40 UTC11h 40m
2026-07-06 SWR181 - Jul 6, 06:15 UTCJul 6, 17:25 UTC11h 10m
2026-07-05 SWR180 - Jul 5, 16:30 UTCJul 6, 02:50 UTC10h 20m
2026-07-05 SWR39 SFO → ZRH Jul 5, 03:00 UTCJul 5, 13:10 UTC10h 10m
2026-07-04 SWR35G ZRH → SFO Jul 4, 12:10 UTCJul 4, 23:50 UTC11h 40m
2026-07-03 SWR139 - Jul 3, 18:05 UTCJul 4, 04:20 UTC10h 15m
2026-07-03 SWR139 - Jul 3, 15:55 UTCJul 3, 16:10 UTC15m
2026-07-02 SWR138 - Jul 2, 21:00 UTCJul 3, 06:10 UTC9h 10m
2026-07-02 SWR181 - Jul 2, 06:15 UTCJul 2, 17:15 UTC11h 0m
2026-07-01 SWR180 - Jul 1, 17:15 UTCJul 2, 02:55 UTC9h 40m
2026-07-01 SWR39 SFO → ZRH Jul 1, 03:05 UTCJul 1, 13:20 UTC10h 15m
2026-06-30 SWR35G - Jun 30, 12:25 UTCJun 30, 23:30 UTC11h 5m
2026-06-29 SWR139 - Jun 29, 18:25 UTCJun 30, 04:15 UTC9h 51m
2026-06-29 SWR139 - Jun 29, 16:10 UTCJun 29, 16:29 UTC20m
2026-06-29 SWR138 - Jun 29, 08:09 UTCJun 29, 08:44 UTC35m
2026-06-28 SWR138 - Jun 28, 21:24 UTCJun 29, 01:05 UTC3h 40m
2026-06-28 SWR181 - Jun 28, 06:10 UTCJun 28, 17:25 UTC11h 15m

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-JNB page for operator, model, and routing details .

Mode-S 4B1917 frequently asked

What is Mode-S code 4B1917?
4B1917 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JNB.
Where is Mode-S 4B1917 registered?
Mode-S code 4B1917 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1917 broadcasting right now?
Yes. Mode-S 4B1917 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1917, octal 22614427, decimal 4,921,623.
What flights does 4B1917 operate?
Mode-S 4B1917 has broadcast 18 distinct callsigns, including SWR139, SWR138, SWR160, SWR161, SWR93.