Apparatus

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sensors Mode-S transponder

45AB26

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-JYF · BOEING 737 MAX 8

Hex
45AB26
Octal
21325446
Decimal
4,565,798
Country
DK
Tail
OY-JYF
Type
B38M
No current signal · last broadcast Jul 26, 18:45 UTC
Flights observed
328
Distinct callsigns
20
Country
DK
Last broadcast
Jul 26, 18:45 UTC

Last known position

Most recent position reported by Mode-S 45AB26.

Country allocation

The ICAO 24-bit address 45AB26 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
JTD392 - 6 2026-07-09
JTD391 - 6 2026-07-09
JTD331 Jet Time 6 2026-07-03
JTD332 - 5 2026-07-03
FIN8U Finnair 5 2026-07-26
FIN1HA Finnair 5 2026-07-26
JTD984 Jet Time 4 2026-06-04
JTD983 Jet Time 4 2026-06-04
JTD537 - 4 2026-07-04
JTD531 Jet Time 4 2026-04-24
JTD303 Jet Time 4 2026-06-28
JTD248 - 4 2026-07-04
SAS1694 Scandinavian Airlines System 3 2026-05-31
JTD680 - 3 2026-06-19
JTD664 - 3 2026-06-21
JTD663 - 3 2026-06-21
JTD662 - 3 2026-06-21
JTD661 - 3 2026-06-21
JTD576 - 3 2026-04-13
JTD575 Jet Time 3 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FIN8U BUD → HEL Jul 26, 16:45 UTCJul 26, 18:45 UTC2h 0m
2026-07-26 FIN1HA HEL → BUD Jul 26, 13:45 UTCJul 26, 15:55 UTC2h 10m
2026-07-26 FIN60H CPH → HEL Jul 26, 10:50 UTCJul 26, 12:10 UTC1h 20m
2026-07-26 FIN1PM HEL → CPH Jul 26, 08:20 UTCJul 26, 09:40 UTC1h 20m
2026-07-25 FIN8U BUD → HEL Jul 25, 16:35 UTCJul 25, 18:40 UTC2h 5m
2026-07-25 FIN1HA HEL → BUD Jul 25, 13:50 UTCJul 25, 15:10 UTC1h 20m
2026-07-25 FIN1YB PRG → HEL Jul 25, 10:05 UTCJul 25, 12:00 UTC1h 55m
2026-07-25 FIN1TH HEL → PRG Jul 25, 06:55 UTCJul 25, 08:45 UTC1h 50m
2026-07-25 FIN4KB ARN → HEL Jul 25, 05:10 UTCJul 25, 05:55 UTC45m
2026-07-25 FIN1NX HEL → ARN Jul 25, 03:30 UTCJul 25, 04:15 UTC45m
2026-07-24 FIN7X NCE → HEL Jul 24, 17:30 UTCJul 24, 20:30 UTC3h 0m
2026-07-24 FIN8KT HEL → NCE Jul 24, 13:20 UTCJul 24, 16:15 UTC2h 55m
2026-07-24 FIN30T DUB → HEL Jul 24, 09:15 UTCJul 24, 11:55 UTC2h 40m
2026-07-24 FIN4EA HEL → DUB Jul 24, 05:10 UTCJul 24, 08:05 UTC2h 55m
2026-07-23 FIN65M VIE → HEL Jul 23, 17:55 UTCJul 23, 20:05 UTC2h 10m
2026-07-23 FIN5H HEL → VIE Jul 23, 14:45 UTCJul 23, 16:50 UTC2h 5m
2026-07-22 FIN1LP FRA → HEL Jul 22, 20:50 UTCJul 22, 22:15 UTC1h 25m
2026-07-22 FIN2K HEL → FRA Jul 22, 14:15 UTCJul 22, 16:20 UTC2h 5m
2026-07-22 FIN6HL BUD → HEL Jul 22, 11:30 UTCJul 22, 12:20 UTC50m
2026-07-21 FIN5NX OSL → HEL Jul 21, 15:50 UTCJul 21, 17:00 UTC1h 10m
2026-07-21 FIN7BV HEL → OSL Jul 21, 13:45 UTCJul 21, 14:55 UTC1h 10m
2026-07-21 FIN1772 - Jul 21, 08:05 UTCJul 21, 10:40 UTC2h 35m
2026-07-21 FIN4AF HEL → BLQ Jul 21, 04:10 UTCJul 21, 07:00 UTC2h 50m
2026-07-20 FIN6D - Jul 20, 17:10 UTCJul 20, 18:50 UTC1h 40m
2026-07-20 FIN1163 HEL → KRK Jul 20, 14:35 UTCJul 20, 16:15 UTC1h 40m
2026-07-20 FIN34M - Jul 20, 10:00 UTCJul 20, 12:55 UTC2h 55m
2026-07-20 FIN1791 HEL → JTR Jul 20, 04:45 UTCJul 20, 07:50 UTC3h 5m
2026-07-19 FIN5G - Jul 19, 18:30 UTCJul 19, 20:25 UTC1h 55m
2026-07-19 FIN4RL HEL → PRG Jul 19, 15:15 UTCJul 19, 17:20 UTC2h 5m
2026-07-19 FIN6HL BUD → HEL Jul 19, 10:20 UTCJul 19, 12:20 UTC2h 0m
2026-07-19 FIN5DM HEL → BUD Jul 19, 07:10 UTCJul 19, 09:15 UTC2h 5m
2026-07-19 FIN4KB ARN → HEL Jul 19, 05:25 UTCJul 19, 06:05 UTC40m
2026-07-19 FIN1NX HEL → ARN Jul 19, 03:45 UTCJul 19, 04:30 UTC45m
2026-07-18 FIN8U BUD → HEL Jul 18, 16:50 UTCJul 18, 18:40 UTC1h 50m
2026-07-18 FIN1HA HEL → BUD Jul 18, 13:40 UTCJul 18, 15:45 UTC2h 5m
2026-07-18 FIN1YB PRG → HEL Jul 18, 09:55 UTCJul 18, 11:40 UTC1h 45m
2026-07-18 FIN1TH HEL → PRG Jul 18, 06:50 UTCJul 18, 08:45 UTC1h 55m
2026-07-17 FIN8U BUD → HEL Jul 17, 16:49 UTCJul 17, 18:44 UTC1h 55m
2026-07-17 FIN1HA HEL → BUD Jul 17, 13:45 UTCJul 17, 15:49 UTC2h 5m
2026-07-17 FIN9ML FRA → HEL Jul 17, 10:00 UTCJul 17, 12:00 UTC2h 0m
2026-07-17 FIN1AB HEL → FRA Jul 17, 04:59 UTCJul 17, 07:14 UTC2h 15m
2026-07-16 FIN65M - Jul 16, 19:14 UTCJul 16, 20:09 UTC55m
2026-07-16 FIN5H HEL → VIE Jul 16, 16:05 UTCJul 16, 18:00 UTC1h 55m
2026-07-16 FIN8LF ARN → HEL Jul 16, 13:10 UTCJul 16, 13:49 UTC40m
2026-07-16 FIN8AZ HEL → ARN Jul 16, 11:20 UTCJul 16, 12:05 UTC45m
2026-07-16 FIN8931 - Jul 16, 08:50 UTCJul 16, 10:25 UTC1h 35m
2026-07-16 FIN5AH - Jul 16, 04:25 UTCJul 16, 06:30 UTC2h 5m
2026-07-15 FIN8U - Jul 15, 16:40 UTCJul 15, 18:50 UTC2h 10m
2026-07-15 FIN1HA HEL → BUD Jul 15, 13:45 UTCJul 15, 15:45 UTC2h 0m
2026-07-15 FIN30T - Jul 15, 09:00 UTCJul 15, 11:55 UTC2h 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 OY-JYF page for operator, model, and routing details .

Mode-S 45AB26 frequently asked

What is Mode-S code 45AB26?
45AB26 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-JYF.
Where is Mode-S 45AB26 registered?
Mode-S code 45AB26 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45AB26 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45AB26, octal 21325446, decimal 4,565,798.
What flights does 45AB26 operate?
Mode-S 45AB26 has broadcast 20 distinct callsigns, including JTD392, JTD391, JTD331, JTD332, FIN8U.