Apparatus

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sensors Mode-S transponder

46104C

ICAO 24-bit transponder address · allocated to Finland

Currently assigned to OH-GEM · PILATUS PC-12

Hex
46104C
Octal
21410114
Decimal
4,591,692
Country
FI
Tail
OH-GEM
Type
PC12
No current signal · last broadcast 2d ago
Flights observed
94
Distinct callsigns
20
Country
FI
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 46104C.

Country allocation

The ICAO 24-bit address 46104C falls within the block assigned to Finland (FI) by ICAO Annex 10, Volume III. Every aircraft registered in Finland 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
FSF778G - 7 2026-07-12
FSF432G - 5 2026-05-30
FSF208A - 5 2026-04-18
FSF801A - 4 2026-06-17
FSF706A - 4 2026-05-04
FSF245K - 4 2026-06-03
FSF827G - 3 2026-05-10
FSF612J - 3 2026-06-10
FSF526G - 3 2026-05-09
FSF359M - 3 2026-06-19
FSF336G - 3 2026-04-19
FSF924A - 2 2026-05-08
FSF885D - 2 2026-05-22
FSF874R - 2 2026-07-02
FSF764M - 2 2026-05-31
FSF702K - 2 2026-05-17
FSF700A - 2 2026-05-07
FSF610B - 2 2026-05-17
FSF598H - 2 2026-06-14
FSF559U - 2 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 FSF198Z - Jul 15, 15:55 UTCJul 15, 17:00 UTC1h 5m
2026-07-15 FSF198Z - Jul 15, 13:10 UTCJul 15, 14:10 UTC1h 0m
2026-07-13 FSF557G - Jul 13, 09:10 UTCJul 13, 09:50 UTC40m
2026-07-13 FSF557G CEQ → LUG Jul 13, 07:15 UTCJul 13, 08:10 UTC55m
2026-07-12 FSF141E - Jul 12, 17:45 UTCJul 12, 18:45 UTC1h 0m
2026-07-12 FSF450H - Jul 12, 15:35 UTCJul 12, 16:30 UTC55m
2026-07-12 FSF778G - Jul 12, 10:30 UTCJul 12, 12:50 UTC2h 20m
2026-07-11 FSF778G - Jul 11, 17:50 UTCJul 11, 18:15 UTC25m
2026-07-06 FSF532M - Jul 6, 07:05 UTCJul 6, 09:15 UTC2h 10m
2026-07-05 FSF827S - Jul 5, 12:50 UTCJul 5, 13:45 UTC55m
2026-07-05 FSF778G - Jul 5, 11:40 UTCJul 5, 11:55 UTC15m
2026-07-04 FSF778G - Jul 4, 11:30 UTCJul 4, 13:45 UTC2h 15m
2026-07-04 FSF778G - Jul 4, 06:35 UTCJul 4, 09:15 UTC2h 40m
2026-07-03 FSF249M - Jul 3, 10:25 UTCJul 3, 10:40 UTC15m
2026-07-02 FSF524A GVA → LTT Jul 2, 16:40 UTCJul 2, 17:35 UTC55m
2026-07-02 FSF874R - Jul 2, 10:20 UTCJul 2, 14:20 UTC4h 0m
2026-07-01 FSF874R LTT → AMS Jul 1, 12:50 UTCJul 1, 15:35 UTC2h 45m
2026-07-01 FSF422A - Jul 1, 11:05 UTCJul 1, 12:05 UTC1h 0m
2026-07-01 FSF422A - Jul 1, 06:45 UTCJul 1, 07:40 UTC55m
2026-06-30 FSF559U GVA → LTT Jun 30, 15:20 UTCJun 30, 16:25 UTC1h 5m
2026-06-30 FSF559U - Jun 30, 13:00 UTCJun 30, 14:00 UTC1h 0m
2026-06-30 FSF778G - Jun 30, 08:45 UTCJun 30, 11:05 UTC2h 20m
2026-06-30 FSF778G - Jun 30, 06:00 UTCJun 30, 07:50 UTC1h 50m
2026-06-19 FSF359M NCE → GVA Jun 19, 13:24 UTCJun 19, 14:24 UTC1h 0m
2026-06-19 FSF359M - Jun 19, 10:29 UTCJun 19, 11:30 UTC1h 0m
2026-06-19 FSF359M ZRH → GVA Jun 19, 08:29 UTCJun 19, 09:04 UTC35m
2026-06-17 FSF801A - Jun 17, 15:00 UTCJun 17, 16:45 UTC1h 45m
2026-06-17 FSF801A - Jun 17, 12:55 UTCJun 17, 13:35 UTC40m
2026-06-17 FSF221A LIN → LTT Jun 17, 09:15 UTCJun 17, 10:25 UTC1h 10m
2026-06-17 FSF221A VIP → LIN Jun 17, 06:55 UTCJun 17, 07:40 UTC45m
2026-06-14 FSF598H - Jun 14, 15:20 UTCJun 14, 16:55 UTC1h 35m
2026-06-14 FSF598H - Jun 14, 12:05 UTCJun 14, 14:05 UTC2h 0m
2026-06-11 FSF499N - Jun 11, 14:30 UTCJun 11, 15:20 UTC50m
2026-06-10 FSF612J - Jun 10, 11:20 UTCJun 10, 12:20 UTC1h 0m
2026-06-10 FSF612J - Jun 10, 08:10 UTCJun 10, 10:45 UTC2h 35m
2026-06-10 FSF612J - Jun 10, 06:05 UTCJun 10, 06:55 UTC50m
2026-06-03 FSF245K - Jun 3, 12:15 UTCJun 3, 12:30 UTC15m
2026-06-03 FSF245K - Jun 3, 10:30 UTCJun 3, 11:40 UTC1h 10m
2026-06-03 FSF245K - Jun 3, 07:25 UTCJun 3, 09:30 UTC2h 5m
2026-06-03 FSF245K - Jun 3, 06:10 UTCJun 3, 06:35 UTC25m
2026-06-02 FSF328G - Jun 2, 13:20 UTCJun 2, 14:35 UTC1h 15m
2026-05-31 FSF764M - May 31, 11:55 UTCMay 31, 13:35 UTC1h 40m
2026-05-31 FSF764M - May 31, 08:25 UTCMay 31, 11:00 UTC2h 35m
2026-05-30 FSF432G - May 30, 13:20 UTCMay 30, 15:30 UTC2h 10m
2026-05-30 FSF432G - May 30, 09:25 UTCMay 30, 11:50 UTC2h 25m
2026-05-29 FSF432G BXO → CEQ May 29, 13:15 UTCMay 29, 14:35 UTC1h 20m
2026-05-26 OHGEM - May 26, 11:05 UTCMay 26, 11:30 UTC25m
2026-05-26 FSF308J - May 26, 08:19 UTCMay 26, 09:45 UTC1h 25m
2026-05-25 FSF212A - May 25, 13:30 UTCMay 25, 16:30 UTC3h 0m
2026-05-25 FSF212A - May 25, 11:25 UTCMay 25, 12:40 UTC1h 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 OH-GEM page for operator, model, and routing details .

Mode-S 46104C frequently asked

What is Mode-S code 46104C?
46104C is an ICAO 24-bit transponder address. Allocated to Finland. Assigned to OH-GEM.
Where is Mode-S 46104C registered?
Mode-S code 46104C is allocated to Finland (FI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 46104C broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 46104C, octal 21410114, decimal 4,591,692.
What flights does 46104C operate?
Mode-S 46104C has broadcast 20 distinct callsigns, including FSF778G, FSF432G, FSF208A, FSF801A, FSF706A.