Apparatus

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sensors Mode-S transponder

4632B1

ICAO 24-bit transponder address · allocated to Finland

Currently assigned to OH-TFD · EMBRAER EMB-505 Phenom 300

Hex
4632B1
Octal
21431261
Decimal
4,600,497
Country
FI
Tail
OH-TFD
Type
E55P
Broadcasting now · callsign ABF8 · 43,000 ft
Flights observed
92
Distinct callsigns
2
Country
FI
Last broadcast
53m ago

Current position

4632B1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4632B1 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 2 distinct

Callsign Airline Flights Last seen
ABF8 - 79 2026-07-14
OHTFD - 13 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ABF8 - Jul 14, 08:05 UTCJul 14, 08:15 UTC10m
2026-07-14 OHTFD - Jul 14, 04:40 UTCJul 14, 07:10 UTC2h 30m
2026-07-14 OHTFD - Jul 14, 03:25 UTCJul 14, 03:45 UTC20m
2026-07-12 ABF8 - Jul 12, 13:45 UTCJul 12, 14:10 UTC25m
2026-07-12 ABF8 - Jul 12, 10:30 UTCJul 12, 13:20 UTC2h 50m
2026-07-12 ABF8 TLL → BLQ Jul 12, 07:05 UTCJul 12, 09:40 UTC2h 35m
2026-07-11 OHTFD ARN → TLL Jul 11, 19:50 UTCJul 11, 20:25 UTC35m
2026-07-10 OHTFD TLL → ARN Jul 10, 08:15 UTCJul 10, 08:55 UTC40m
2026-07-09 ABF8 - Jul 9, 07:10 UTCJul 9, 07:40 UTC30m
2026-07-08 ABF8 - Jul 8, 10:35 UTCJul 8, 13:10 UTC2h 35m
2026-07-08 ABF8 VLC → LBG Jul 8, 08:00 UTCJul 8, 09:50 UTC1h 50m
2026-07-07 ABF8 - Jul 7, 12:15 UTCJul 7, 13:40 UTC1h 25m
2026-07-07 ABF8 IBZ → NCE Jul 7, 10:00 UTCJul 7, 11:20 UTC1h 20m
2026-07-05 ABF8 - Jul 5, 20:50 UTCJul 5, 22:55 UTC2h 5m
2026-07-05 ABF8 IBZ → RTM Jul 5, 18:10 UTCJul 5, 20:20 UTC2h 10m
2026-07-04 ABF8 TRN → IBZ Jul 4, 20:00 UTCJul 4, 21:25 UTC1h 25m
2026-07-04 ABF8 - Jul 4, 12:35 UTCJul 4, 15:15 UTC2h 40m
2026-07-03 ABF8 - Jul 3, 21:10 UTCJul 3, 21:55 UTC45m
2026-07-03 ABF8 - Jul 3, 18:25 UTCJul 3, 20:10 UTC1h 45m
2026-07-01 ABF8 EDI → FAB Jul 1, 15:45 UTCJul 1, 16:40 UTC55m
2026-07-01 ABF8 BZR → EDI Jul 1, 12:00 UTCJul 1, 14:30 UTC2h 30m
2026-06-30 ABF8 - Jun 30, 09:10 UTCJun 30, 12:25 UTC3h 15m
2026-06-29 ABF8 - Jun 29, 16:39 UTCJun 29, 18:49 UTC2h 10m
2026-06-29 ABF8 - Jun 29, 14:04 UTCJun 29, 15:00 UTC55m
2026-06-28 ABF8 - Jun 28, 11:59 UTCJun 28, 14:34 UTC2h 35m
2026-06-28 ABF8 - Jun 28, 09:15 UTCJun 28, 10:39 UTC1h 25m
2026-06-27 ABF8 - Jun 27, 11:59 UTCJun 27, 14:29 UTC2h 30m
2026-06-27 ABF8 - Jun 27, 06:09 UTCJun 27, 08:35 UTC2h 25m
2026-06-24 OHTFD - Jun 24, 14:24 UTCJun 24, 17:34 UTC3h 10m
2026-06-24 ABF8 - Jun 24, 11:50 UTCJun 24, 12:54 UTC1h 5m
2026-06-24 ABF8 HEL → NCE Jun 24, 06:29 UTCJun 24, 09:29 UTC3h 0m
2026-06-21 OHTFD - Jun 21, 21:54 UTCJun 22, 01:10 UTC3h 15m
2026-06-21 OHTFD - Jun 21, 17:54 UTCJun 21, 20:59 UTC3h 5m
2026-06-21 ABF8 - Jun 21, 13:59 UTCJun 21, 16:19 UTC2h 20m
2026-06-21 ABF8 TLL → NHT Jun 21, 09:35 UTCJun 21, 12:19 UTC2h 45m
2026-06-19 ABF8 - Jun 19, 08:04 UTCJun 19, 10:44 UTC2h 40m
2026-06-18 ABF8 BTS → BLQ Jun 18, 12:00 UTCJun 18, 13:05 UTC1h 5m
2026-06-17 ABF8 - Jun 17, 19:35 UTCJun 17, 22:25 UTC2h 50m
2026-06-17 ABF8 - Jun 17, 17:00 UTCJun 17, 18:20 UTC1h 20m
2026-06-17 ABF8 - Jun 17, 11:40 UTCJun 17, 14:30 UTC2h 50m
2026-06-17 ABF8 - Jun 17, 08:00 UTCJun 17, 10:35 UTC2h 35m
2026-06-16 ABF8 HEL → HEL Jun 16, 05:05 UTCJun 16, 07:09 UTC2h 5m
2026-06-14 OHTFD - Jun 14, 10:55 UTCJun 14, 12:00 UTC1h 5m
2026-06-13 OHTFD - Jun 13, 08:15 UTCJun 13, 09:10 UTC55m
2026-06-12 ABF8 - Jun 12, 15:00 UTCJun 12, 17:30 UTC2h 30m
2026-06-12 ABF8 DBV → LBG Jun 12, 11:35 UTCJun 12, 13:50 UTC2h 15m
2026-06-12 OHTFD - Jun 12, 07:05 UTCJun 12, 10:00 UTC2h 55m
2026-06-12 ABF8 - Jun 12, 05:40 UTCJun 12, 06:05 UTC25m
2026-06-11 ABF8 MLA → HEL Jun 11, 20:00 UTCJun 12, 00:15 UTC4h 15m
2026-06-11 ABF8 IBZ → MLA Jun 11, 17:10 UTCJun 11, 19:05 UTC1h 55m

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

Mode-S 4632B1 frequently asked

What is Mode-S code 4632B1?
4632B1 is an ICAO 24-bit transponder address. Allocated to Finland. Assigned to OH-TFD.
Where is Mode-S 4632B1 registered?
Mode-S code 4632B1 is allocated to Finland (FI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4632B1 broadcasting right now?
Yes. Mode-S 4632B1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4632B1, octal 21431261, decimal 4,600,497.
What flights does 4632B1 operate?
Mode-S 4632B1 has broadcast 2 distinct callsigns, including ABF8, OHTFD.