Apparatus

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sensors Mode-S transponder

45AB24

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-JYD · BOEING 737-800

Hex
45AB24
Octal
21325444
Decimal
4,565,796
Country
DK
Tail
OY-JYD
Type
B738
No current signal · last broadcast 7h ago
Flights observed
380
Distinct callsigns
20
Country
DK
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 45AB24.

Country allocation

The ICAO 24-bit address 45AB24 falls within the block assigned to Denmark (DK) by ICAO Annex 10, Volume III. Every aircraft registered in Denmark 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
FIN1HA - 16 2026-07-12
FIN8U - 15 2026-07-12
FIN9ML - 12 2026-07-14
FIN1AB - 12 2026-07-14
FIN4EA - 10 2026-07-08
FIN30T - 10 2026-07-08
FIN8AM - 9 2026-06-24
FIN33V - 9 2026-06-24
FIN65M Finnair 8 2026-07-03
FIN5H - 8 2026-07-03
FIN9AP - 7 2026-07-11
FIN6D - 7 2026-07-14
FIN4KG - 7 2026-07-11
FIN1163 - 7 2026-07-14
FIN8KT - 6 2026-07-09
FIN7X - 6 2026-07-09
FIN7LK - 6 2026-07-04
FIN6HL - 6 2026-07-12
FIN60A - 6 2026-07-04
FIN5DM - 6 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FIN6D - Jul 14, 17:20 UTCJul 14, 19:05 UTC1h 45m
2026-07-14 FIN1163 - Jul 14, 14:25 UTCJul 14, 16:10 UTC1h 45m
2026-07-14 FIN9ML FRA → HEL Jul 14, 09:50 UTCJul 14, 11:55 UTC2h 5m
2026-07-14 FIN1AB HEL → FRA Jul 14, 04:55 UTCJul 14, 07:10 UTC2h 15m
2026-07-13 FIN6PR CPH → HEL Jul 13, 17:40 UTCJul 13, 18:50 UTC1h 10m
2026-07-13 FIN1BL HEL → CPH Jul 13, 15:20 UTCJul 13, 16:40 UTC1h 20m
2026-07-13 FIN67G - Jul 13, 07:40 UTCJul 13, 09:55 UTC2h 15m
2026-07-13 FIN1201 HEL → LJU Jul 13, 04:20 UTCJul 13, 06:40 UTC2h 20m
2026-07-12 FIN8U - Jul 12, 17:30 UTCJul 12, 19:35 UTC2h 5m
2026-07-12 FIN1HA HEL → BUD Jul 12, 14:40 UTCJul 12, 16:35 UTC1h 55m
2026-07-12 FIN6HL BUD → HEL Jul 12, 10:45 UTCJul 12, 12:50 UTC2h 5m
2026-07-12 FIN5DM HEL → BUD Jul 12, 07:20 UTCJul 12, 09:15 UTC1h 55m
2026-07-11 FIN4KG - Jul 11, 17:30 UTCJul 11, 20:10 UTC2h 40m
2026-07-11 FIN9AP - Jul 11, 13:45 UTCJul 11, 16:15 UTC2h 30m
2026-07-11 FIN67E - Jul 11, 09:55 UTCJul 11, 12:00 UTC2h 5m
2026-07-11 FIN6RL - Jul 11, 06:35 UTCJul 11, 08:40 UTC2h 5m
2026-07-10 FIN8U BUD → HEL Jul 10, 16:35 UTCJul 10, 18:35 UTC2h 0m
2026-07-10 FIN1HA HEL → BUD Jul 10, 13:40 UTCJul 10, 15:35 UTC1h 55m
2026-07-10 FIN9ML FRA → HEL Jul 10, 09:55 UTCJul 10, 12:05 UTC2h 10m
2026-07-10 FIN1AB HEL → FRA Jul 10, 05:30 UTCJul 10, 07:35 UTC2h 5m
2026-07-09 FIN7X - Jul 9, 17:40 UTCJul 9, 20:45 UTC3h 5m
2026-07-09 FIN8KT HEL → NCE Jul 9, 13:40 UTCJul 9, 16:30 UTC2h 50m
2026-07-09 FIN9ML FRA → HEL Jul 9, 09:55 UTCJul 9, 12:05 UTC2h 10m
2026-07-09 FIN1AB HEL → FRA Jul 9, 05:10 UTCJul 9, 07:15 UTC2h 5m
2026-07-08 FIN26V DUB → HEL Jul 8, 18:10 UTCJul 8, 20:40 UTC2h 30m
2026-07-08 FIN9YC - Jul 8, 13:55 UTCJul 8, 16:45 UTC2h 50m
2026-07-08 FIN30T - Jul 8, 09:35 UTCJul 8, 12:15 UTC2h 40m
2026-07-08 FIN4EA HEL → DUB Jul 8, 05:05 UTCJul 8, 07:45 UTC2h 40m
2026-07-07 FIN8U BUD → HEL Jul 7, 17:15 UTCJul 7, 19:15 UTC2h 0m
2026-07-07 FIN1HA HEL → BUD Jul 7, 14:05 UTCJul 7, 16:10 UTC2h 5m
2026-07-07 FIN30T DUB → HEL Jul 7, 09:30 UTCJul 7, 12:05 UTC2h 35m
2026-07-07 FIN4EA HEL → DUB Jul 7, 05:05 UTCJul 7, 08:05 UTC3h 0m
2026-07-06 FIN4BV CDG → HEL Jul 6, 17:40 UTCJul 6, 20:15 UTC2h 35m
2026-07-06 FIN3EF - Jul 6, 13:30 UTCJul 6, 16:00 UTC2h 30m
2026-07-05 FIN7X NCE → HEL Jul 5, 17:30 UTCJul 5, 20:30 UTC3h 0m
2026-07-05 FIN8KT HEL → NCE Jul 5, 13:20 UTCJul 5, 16:20 UTC3h 0m
2026-07-05 FIN67E VIE → HEL Jul 5, 09:40 UTCJul 5, 11:45 UTC2h 5m
2026-07-05 FIN6RL - Jul 5, 06:25 UTCJul 5, 07:25 UTC1h 0m
2026-07-04 FIN7LK - Jul 4, 18:15 UTCJul 4, 21:00 UTC2h 45m
2026-07-04 FIN60A HEL → BLQ Jul 4, 14:45 UTCJul 4, 17:15 UTC2h 30m
2026-07-04 FIN67E - Jul 4, 09:55 UTCJul 4, 12:00 UTC2h 5m
2026-07-04 FIN6RL - Jul 4, 06:35 UTCJul 4, 08:40 UTC2h 5m
2026-07-03 FIN65M VIE → HEL Jul 3, 17:40 UTCJul 3, 19:40 UTC2h 0m
2026-07-03 FIN5H HEL → VIE Jul 3, 14:30 UTCJul 3, 16:40 UTC2h 10m
2026-07-03 JTD9001 - Jul 3, 11:20 UTCJul 3, 12:40 UTC1h 20m
2026-07-01 JTD9406 - Jul 1, 18:50 UTCJul 1, 19:20 UTC30m
2026-07-01 JTD406 - Jul 1, 12:50 UTCJul 1, 17:50 UTC5h 0m
2026-07-01 JTD405 - Jul 1, 06:25 UTCJul 1, 11:00 UTC4h 35m
2026-06-30 JTD9368 - Jun 30, 20:10 UTCJun 30, 23:25 UTC3h 15m
2026-06-30 JTD367 - Jun 30, 15:45 UTCJun 30, 19:05 UTC3h 20m

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 OY-JYD page for operator, model, and routing details .

Mode-S 45AB24 frequently asked

What is Mode-S code 45AB24?
45AB24 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-JYD.
Where is Mode-S 45AB24 registered?
Mode-S code 45AB24 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45AB24 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45AB24, octal 21325444, decimal 4,565,796.
What flights does 45AB24 operate?
Mode-S 45AB24 has broadcast 20 distinct callsigns, including FIN1HA, FIN8U, FIN9ML, FIN1AB, FIN4EA.