Apparatus

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sensors Mode-S transponder

45AA46

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-JRF · ATR-42-500

Hex
45AA46
Octal
21325106
Decimal
4,565,574
Country
DK
Tail
OY-JRF
Type
AT45
Broadcasting now · callsign DNU66L · 13,250 ft
Flights observed
161
Distinct callsigns
20
Country
DK
Last broadcast
1h ago

Current position

45AA46 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 45AA46 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
DTR43S DAT Danish Air Transport 16 2026-05-25
DTR44S DAT Danish Air Transport 14 2026-05-25
DTR41S DAT Danish Air Transport 14 2026-05-08
DTR546 DAT Danish Air Transport 11 2026-05-08
DTR45S DAT Danish Air Transport 11 2026-05-08
DTR42S DAT Danish Air Transport 11 2026-05-20
DTR579 DAT Danish Air Transport 9 2026-05-29
DTR72F DAT Danish Air Transport 8 2026-05-29
DTR71F DAT Danish Air Transport 8 2026-05-30
DTR578 DAT Danish Air Transport 8 2026-05-29
DTR577 DAT Danish Air Transport 8 2026-05-29
DTR76F DAT Danish Air Transport 6 2026-05-28
DNU68L DOT LT 5 2026-06-04
DNU62L DOT LT 4 2026-06-01
DTR74F DAT Danish Air Transport 3 2026-05-30
DNU67L DOT LT 3 2026-06-04
DNU63L DOT LT 3 2026-06-05
DNU61L DOT LT 3 2026-06-01
DTR73F DAT Danish Air Transport 2 2026-05-28
DTR47S DAT Danish Air Transport 2 2026-05-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-05 DNU63L OLA → OLA Jun 5, 11:10 UTCJun 5, 11:30 UTC20m
2026-06-05 DNU92E - Jun 5, 09:00 UTCJun 5, 10:10 UTC1h 10m
2026-06-05 DNU91E - Jun 5, 06:35 UTCJun 5, 07:40 UTC1h 5m
2026-06-04 DNU68L OSL → OSL Jun 4, 17:15 UTCJun 4, 18:00 UTC45m
2026-06-04 DNU67L OSL → OSL Jun 4, 15:10 UTCJun 4, 16:15 UTC1h 5m
2026-06-01 DNU62L OSL → OSL Jun 1, 07:05 UTCJun 1, 07:55 UTC50m
2026-06-01 DNU61L OSL → OSL Jun 1, 05:00 UTCJun 1, 06:00 UTC1h 0m
2026-05-31 DNU68L OSL → OSL May 31, 18:50 UTCMay 31, 19:40 UTC50m
2026-05-31 DTR549 SRP → OSL May 31, 17:15 UTCMay 31, 18:05 UTC50m
2026-05-31 DTR48S OSL → SRP May 31, 15:50 UTCMay 31, 16:30 UTC40m
2026-05-31 DNU65L OLA → OLA May 31, 14:05 UTCMay 31, 15:00 UTC55m
2026-05-31 DNU64L OSL → OSL May 31, 12:20 UTCMay 31, 13:10 UTC50m
2026-05-30 DTR74F OSL → FRO May 30, 08:50 UTCMay 30, 10:50 UTC2h 0m
2026-05-30 DTR71F FRO → OSL May 30, 07:20 UTCMay 30, 08:00 UTC40m
2026-05-29 DTR578 OSL → FRO May 29, 18:05 UTCMay 29, 18:45 UTC40m
2026-05-29 DTR579 FRO → OSL May 29, 16:20 UTCMay 29, 17:05 UTC45m
2026-05-29 DTR577 FRO → OSL May 29, 14:15 UTCMay 29, 14:55 UTC40m
2026-05-29 DTR577 FRO → OSL May 29, 12:50 UTCMay 29, 13:35 UTC45m
2026-05-29 DTR72F OSL → FRO May 29, 06:55 UTCMay 29, 07:40 UTC45m
2026-05-29 DTR71F FRO → OSL May 29, 05:25 UTCMay 29, 06:10 UTC45m
2026-05-28 DTR578 OSL → FRO May 28, 18:15 UTCMay 28, 19:00 UTC45m
2026-05-28 DTR579 FRO → OSL May 28, 16:25 UTCMay 28, 17:00 UTC35m
2026-05-28 DTR76F OSL → FRO May 28, 14:15 UTCMay 28, 14:55 UTC40m
2026-05-28 DTR577 FRO → OSL May 28, 12:45 UTCMay 28, 13:25 UTC40m
2026-05-28 DTR74F OSL → FRO May 28, 10:10 UTCMay 28, 10:55 UTC45m
2026-05-28 DTR73F FRO → OSL May 28, 08:50 UTCMay 28, 09:30 UTC40m
2026-05-28 DTR72F OSL → FRO May 28, 07:15 UTCMay 28, 08:00 UTC45m
2026-05-28 DNU61L OSL → OSL May 28, 04:50 UTCMay 28, 05:45 UTC55m
2026-05-27 DNU62L OSL → OSL May 27, 07:25 UTCMay 27, 08:25 UTC1h 0m
2026-05-27 DNU61L OSL → OSL May 27, 05:29 UTCMay 27, 06:20 UTC50m
2026-05-26 DNU68L OSL → OSL May 26, 15:35 UTCMay 26, 16:35 UTC1h 0m
2026-05-26 DNU63L OLA → OLA May 26, 13:29 UTCMay 26, 14:24 UTC55m
2026-05-26 DNU92E - May 26, 11:09 UTCMay 26, 12:24 UTC1h 15m
2026-05-26 DNU91E - May 26, 06:34 UTCMay 26, 07:40 UTC1h 5m
2026-05-25 DNU68L OSL → OSL May 25, 19:05 UTCMay 25, 20:04 UTC1h 0m
2026-05-25 DNU67L OSL → OSL May 25, 14:25 UTCMay 25, 15:20 UTC55m
2026-05-25 DNU62L OSL → OSL May 25, 12:40 UTCMay 25, 13:40 UTC1h 0m
2026-05-25 DNU958 - May 25, 11:10 UTCMay 25, 11:55 UTC45m
2026-05-25 DTR44S OSL → SRP May 25, 09:40 UTCMay 25, 10:40 UTC1h 0m
2026-05-25 DTR43S SRP → OSL May 25, 08:10 UTCMay 25, 08:50 UTC40m
2026-05-20 DTR42S OSL → SRP May 20, 06:50 UTCMay 20, 07:35 UTC45m
2026-05-20 DTR71F FRO → OSL May 20, 05:15 UTCMay 20, 06:05 UTC50m
2026-05-19 DTR578 OSL → FRO May 19, 18:15 UTCMay 19, 19:00 UTC45m
2026-05-19 DTR579 FRO → OSL May 19, 16:30 UTCMay 19, 17:15 UTC45m
2026-05-19 DTR76F OSL → FRO May 19, 14:20 UTCMay 19, 14:55 UTC35m
2026-05-19 DTR72F OSL → FRO May 19, 12:55 UTCMay 19, 13:45 UTC50m
2026-05-19 DTR72F OSL → FRO May 19, 06:55 UTCMay 19, 07:35 UTC40m
2026-05-19 DTR71F FRO → OSL May 19, 05:30 UTCMay 19, 06:20 UTC50m
2026-05-18 DTR578 OSL → FRO May 18, 18:25 UTCMay 18, 19:10 UTC44m
2026-05-18 DTR579 FRO → OSL May 18, 16:25 UTCMay 18, 17:15 UTC50m

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

Mode-S 45AA46 frequently asked

What is Mode-S code 45AA46?
45AA46 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-JRF.
Where is Mode-S 45AA46 registered?
Mode-S code 45AA46 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45AA46 broadcasting right now?
Yes. Mode-S 45AA46 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45AA46, octal 21325106, decimal 4,565,574.
What flights does 45AA46 operate?
Mode-S 45AA46 has broadcast 20 distinct callsigns, including DTR43S, DTR44S, DTR41S, DTR546, DTR45S.