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sensors Mode-S transponder

4613B9

ICAO 24-bit transponder address · allocated to Finland

Currently assigned to OH-HMF · AIRBUS HELICOPTERS EC-135/635

Hex
4613B9
Octal
21411671
Decimal
4,592,569
Country
FI
Tail
OH-HMF
Type
EC35
No current signal · last broadcast Jul 26, 18:15 UTC
Flights observed
415
Distinct callsigns
1
Country
FI
Last broadcast
Jul 26, 18:15 UTC

Last known position

Most recent position reported by Mode-S 4613B9.

Country allocation

The ICAO 24-bit address 4613B9 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 1 distinct

Callsign Airline Flights Last seen
FIH10 - 415 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FIH10 - Jul 26, 18:00 UTCJul 26, 18:15 UTC15m
2026-07-26 FIH10 - Jul 26, 06:20 UTCJul 26, 07:10 UTC51m
2026-07-26 FIH10 - Jul 26, 00:00 UTCJul 26, 01:05 UTC1h 5m
2026-07-25 FIH10 - Jul 25, 20:40 UTCJul 25, 20:55 UTC15m
2026-07-25 FIH10 - Jul 25, 06:30 UTCJul 25, 06:40 UTC10m
2026-07-24 FIH10 - Jul 24, 22:50 UTCJul 24, 23:30 UTC40m
2026-07-24 FIH10 HEL → HEL Jul 24, 16:35 UTCJul 24, 16:55 UTC20m
2026-07-24 FIH10 HEL → HEL Jul 24, 09:50 UTCJul 24, 11:25 UTC1h 35m
2026-07-24 FIH10 - Jul 24, 06:50 UTCJul 24, 07:00 UTC10m
2026-07-23 FIH10 - Jul 23, 21:05 UTCJul 23, 21:10 UTC5m
2026-07-23 FIH10 - Jul 23, 20:20 UTCJul 23, 20:35 UTC15m
2026-07-23 FIH10 - Jul 23, 18:50 UTCJul 23, 19:05 UTC15m
2026-07-23 FIH10 - Jul 23, 16:25 UTCJul 23, 16:35 UTC10m
2026-07-23 FIH10 - Jul 23, 15:05 UTCJul 23, 16:00 UTC55m
2026-07-23 FIH10 - Jul 23, 12:40 UTCJul 23, 12:55 UTC15m
2026-07-23 FIH10 - Jul 23, 11:50 UTCJul 23, 12:10 UTC20m
2026-07-22 FIH10 HEL → HEL Jul 22, 22:45 UTCJul 22, 23:00 UTC15m
2026-07-22 FIH10 - Jul 22, 20:40 UTCJul 22, 21:00 UTC20m
2026-07-22 FIH10 - Jul 22, 19:40 UTCJul 22, 20:05 UTC25m
2026-07-22 FIH10 - Jul 22, 18:00 UTCJul 22, 18:10 UTC10m
2026-07-22 FIH10 - Jul 22, 12:20 UTCJul 22, 12:35 UTC15m
2026-07-21 FIH10 - Jul 21, 20:15 UTCJul 21, 20:40 UTC25m
2026-07-21 FIH10 - Jul 21, 19:25 UTCJul 21, 19:40 UTC15m
2026-07-21 FIH10 - Jul 21, 11:55 UTCJul 21, 12:05 UTC10m
2026-07-21 FIH10 - Jul 21, 06:50 UTCJul 21, 07:00 UTC10m
2026-07-21 FIH10 - Jul 21, 05:50 UTCJul 21, 06:05 UTC15m
2026-07-21 FIH10 - Jul 21, 05:20 UTCJul 21, 05:35 UTC15m
2026-07-21 FIH10 - Jul 21, 02:35 UTCJul 21, 03:00 UTC25m
2026-07-20 FIH10 - Jul 20, 17:15 UTCJul 20, 17:25 UTC10m
2026-07-20 FIH10 - Jul 20, 16:00 UTCJul 20, 16:50 UTC50m
2026-07-20 FIH10 HEL → HEL Jul 20, 14:25 UTCJul 20, 14:45 UTC20m
2026-07-20 FIH10 - Jul 20, 13:25 UTCJul 20, 13:40 UTC15m
2026-07-20 FIH10 - Jul 20, 12:15 UTCJul 20, 12:30 UTC15m
2026-07-20 FIH10 HEL → HEL Jul 20, 06:30 UTCJul 20, 06:40 UTC10m
2026-07-19 FIH10 - Jul 19, 20:45 UTCJul 19, 21:45 UTC1h 0m
2026-07-19 FIH10 - Jul 19, 09:55 UTCJul 19, 10:05 UTC10m
2026-07-19 FIH10 - Jul 19, 09:05 UTCJul 19, 09:25 UTC20m
2026-07-19 FIH10 - Jul 19, 08:15 UTCJul 19, 08:25 UTC10m
2026-07-18 FIH10 - Jul 18, 12:05 UTCJul 18, 12:20 UTC15m
2026-07-18 FIH10 - Jul 18, 11:05 UTCJul 18, 11:25 UTC20m
2026-07-18 FIH10 - Jul 18, 06:15 UTCJul 18, 07:00 UTC45m
2026-07-18 FIH10 - Jul 18, 01:34 UTCJul 18, 01:50 UTC15m
2026-07-17 FIH10 - Jul 17, 22:29 UTCJul 17, 23:10 UTC40m
2026-07-17 FIH10 - Jul 17, 21:25 UTCJul 17, 21:50 UTC25m
2026-07-17 FIH10 HEL → HEL Jul 17, 18:10 UTCJul 17, 18:50 UTC40m
2026-07-17 FIH10 HEL → HEL Jul 17, 16:24 UTCJul 17, 16:40 UTC15m
2026-07-17 FIH10 - Jul 17, 08:10 UTCJul 17, 08:40 UTC30m
2026-07-17 FIH10 - Jul 17, 07:25 UTCJul 17, 07:35 UTC10m
2026-07-17 FIH10 - Jul 17, 03:25 UTCJul 17, 03:59 UTC35m
2026-07-16 FIH10 - Jul 16, 20:49 UTCJul 16, 21:00 UTC10m

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

Mode-S 4613B9 frequently asked

What is Mode-S code 4613B9?
4613B9 is an ICAO 24-bit transponder address. Allocated to Finland. Assigned to OH-HMF.
Where is Mode-S 4613B9 registered?
Mode-S code 4613B9 is allocated to Finland (FI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4613B9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4613B9, octal 21411671, decimal 4,592,569.
What flights does 4613B9 operate?
Mode-S 4613B9 has broadcast 1 distinct callsign, including FIH10.