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sensors Mode-S transponder

4613D3

ICAO 24-bit transponder address · allocated to Finland

Currently assigned to OH-HNF · AIRBUS HELICOPTERS EC-145

Hex
4613D3
Octal
21411723
Decimal
4,592,595
Country
FI
Tail
OH-HNF
Type
EC45
No current signal · last broadcast 25d ago
Flights observed
99
Distinct callsigns
3
Country
FI
Last broadcast
25d ago

Last known position

Most recent position reported by Mode-S 4613D3.

Country allocation

The ICAO 24-bit address 4613D3 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 3 distinct

Callsign Airline Flights Last seen
FIH50 - 79 2026-07-26
FIH60 - 12 2026-05-29
OHHNF - 8 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FIH50 - Jul 26, 18:55 UTCJul 26, 19:40 UTC45m
2026-07-26 FIH50 - Jul 26, 11:45 UTCJul 26, 12:15 UTC30m
2026-07-26 FIH50 - Jul 26, 04:50 UTCJul 26, 05:25 UTC35m
2026-07-25 FIH50 - Jul 25, 15:45 UTCJul 25, 16:15 UTC30m
2026-07-24 FIH50 - Jul 24, 07:35 UTCJul 24, 08:40 UTC1h 5m
2026-07-21 FIH50 - Jul 21, 08:10 UTCJul 21, 08:20 UTC10m
2026-07-20 FIH50 - Jul 20, 19:10 UTCJul 20, 19:20 UTC10m
2026-07-20 FIH50 - Jul 20, 05:30 UTCJul 20, 06:05 UTC35m
2026-07-19 FIH50 - Jul 19, 18:30 UTCJul 19, 19:05 UTC35m
2026-07-18 FIH50 - Jul 18, 14:15 UTCJul 18, 14:50 UTC35m
2026-07-18 FIH50 - Jul 18, 02:19 UTCJul 18, 03:00 UTC41m
2026-07-18 FIH50 - Jul 18, 00:25 UTCJul 18, 00:39 UTC15m
2026-07-17 FIH50 - Jul 17, 20:29 UTCJul 17, 21:10 UTC40m
2026-07-17 FIH50 - Jul 17, 07:25 UTCJul 17, 07:40 UTC15m
2026-07-17 FIH50 - Jul 17, 06:00 UTCJul 17, 06:10 UTC10m
2026-07-16 OHHNF OUL → OUL Jul 16, 07:50 UTCJul 16, 08:40 UTC50m
2026-07-15 OHHNF - Jul 15, 12:55 UTCJul 15, 13:45 UTC50m
2026-07-14 FIH50 OUL → OUL Jul 14, 17:00 UTCJul 14, 17:35 UTC35m
2026-07-14 FIH50 - Jul 14, 02:40 UTCJul 14, 02:50 UTC10m
2026-07-14 FIH50 - Jul 14, 01:10 UTCJul 14, 01:20 UTC10m
2026-07-12 FIH50 - Jul 12, 17:55 UTCJul 12, 18:05 UTC10m
2026-07-12 FIH50 - Jul 12, 13:35 UTCJul 12, 13:55 UTC20m
2026-07-11 FIH50 - Jul 11, 08:01 UTCJul 11, 09:10 UTC1h 10m
2026-07-10 FIH50 - Jul 10, 15:50 UTCJul 10, 16:05 UTC15m
2026-07-10 FIH50 - Jul 10, 09:30 UTCJul 10, 10:05 UTC35m
2026-07-09 FIH50 - Jul 9, 17:45 UTCJul 9, 18:10 UTC25m
2026-07-09 FIH50 - Jul 9, 15:40 UTCJul 9, 16:30 UTC50m
2026-07-08 FIH50 - Jul 8, 08:25 UTCJul 8, 09:20 UTC55m
2026-07-08 FIH50 - Jul 8, 07:00 UTCJul 8, 07:10 UTC10m
2026-07-07 FIH50 - Jul 7, 15:50 UTCJul 7, 16:00 UTC10m
2026-07-07 FIH50 - Jul 7, 06:20 UTCJul 7, 07:35 UTC1h 15m
2026-07-05 FIH50 - Jul 5, 22:05 UTCJul 5, 22:15 UTC10m
2026-07-05 FIH50 - Jul 5, 07:35 UTCJul 5, 07:50 UTC15m
2026-07-05 FIH50 - Jul 5, 06:35 UTCJul 5, 06:45 UTC10m
2026-07-02 FIH50 - Jul 2, 09:50 UTCJul 2, 10:00 UTC10m
2026-07-02 FIH50 - Jul 2, 08:35 UTCJul 2, 08:45 UTC10m
2026-07-02 FIH50 - Jul 2, 06:35 UTCJul 2, 07:05 UTC30m
2026-06-30 FIH50 - Jun 30, 14:55 UTCJun 30, 17:05 UTC2h 10m
2026-06-30 FIH50 OUL → OUL Jun 30, 10:10 UTCJun 30, 10:55 UTC45m
2026-06-28 FIH50 OUL → OUL Jun 28, 08:19 UTCJun 28, 08:55 UTC35m
2026-06-27 FIH50 - Jun 27, 20:34 UTCJun 27, 21:10 UTC35m
2026-06-27 FIH50 - Jun 27, 16:14 UTCJun 27, 16:35 UTC20m
2026-06-27 FIH50 - Jun 27, 14:05 UTCJun 27, 14:39 UTC35m
2026-06-26 FIH50 - Jun 26, 18:54 UTCJun 26, 19:04 UTC10m
2026-06-26 FIH50 - Jun 26, 17:54 UTCJun 26, 18:04 UTC10m
2026-06-26 FIH50 - Jun 26, 09:39 UTCJun 26, 09:50 UTC10m
2026-06-25 FIH50 - Jun 25, 06:30 UTCJun 25, 07:34 UTC1h 5m
2026-06-24 FIH50 - Jun 24, 01:39 UTCJun 24, 01:49 UTC10m
2026-06-23 FIH50 - Jun 23, 12:09 UTCJun 23, 13:15 UTC1h 5m
2026-06-22 FIH50 - Jun 22, 16:40 UTCJun 22, 16:50 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-HNF page for operator, model, and routing details .

Mode-S 4613D3 frequently asked

What is Mode-S code 4613D3?
4613D3 is an ICAO 24-bit transponder address. Allocated to Finland. Assigned to OH-HNF.
Where is Mode-S 4613D3 registered?
Mode-S code 4613D3 is allocated to Finland (FI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4613D3 broadcasting right now?
No active broadcast right now. Last signal was 25d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4613D3, octal 21411723, decimal 4,592,595.
What flights does 4613D3 operate?
Mode-S 4613D3 has broadcast 3 distinct callsigns, including FIH50, FIH60, OHHNF.