Apparatus

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sensors Mode-S transponder

45CAAE

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-RUN · ATR-72-600

Hex
45CAAE
Octal
21345256
Decimal
4,573,870
Country
DK
Tail
OY-RUN
Type
AT76
No current signal · last broadcast 3h ago
Flights observed
232
Distinct callsigns
11
Country
DK
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 45CAAE.

Country allocation

The ICAO 24-bit address 45CAAE 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 11 distinct

Callsign Airline Flights Last seen
DTR4HK DAT Danish Air Transport 36 2026-05-29
DTR4KR - 35 2026-05-29
DTR4RY DAT Danish Air Transport 33 2026-05-29
DTR4LV DAT Danish Air Transport 29 2026-05-29
DTR4WH DAT Danish Air Transport 19 2026-05-27
DTR4RM DAT Danish Air Transport 18 2026-05-27
DTR2HC DAT Danish Air Transport 15 2026-05-28
DTR23M - 14 2026-05-28
DTR233 DAT Danish Air Transport 14 2026-05-29
DTR232 DAT Danish Air Transport 14 2026-05-29
DTR4VL DAT Danish Air Transport 5 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 DTR4HK MUC → PAD May 29, 19:40 UTCMay 29, 21:25 UTC1h 45m
2026-05-29 DTR233 LBC → MUC May 29, 16:10 UTCMay 29, 17:35 UTC1h 25m
2026-05-29 DTR232 MUC → LBC May 29, 12:50 UTCMay 29, 14:25 UTC1h 35m
2026-05-29 DTR4KR - May 29, 10:25 UTCMay 29, 11:25 UTC1h 0m
2026-05-29 DTR4LV MUC → PAD May 29, 06:35 UTCMay 29, 07:45 UTC1h 10m
2026-05-29 DTR4RY PAD → MUC May 29, 04:05 UTCMay 29, 05:10 UTC1h 5m
2026-05-28 DTR4HK MUC → PAD May 28, 18:10 UTCMay 28, 19:20 UTC1h 10m
2026-05-28 DTR23M - May 28, 15:00 UTCMay 28, 16:15 UTC1h 15m
2026-05-28 DTR2HC MUC → PEV May 28, 12:55 UTCMay 28, 14:05 UTC1h 10m
2026-05-28 DTR4KR - May 28, 10:20 UTCMay 28, 11:25 UTC1h 5m
2026-05-28 DTR4LV MUC → PAD May 28, 06:25 UTCMay 28, 07:35 UTC1h 10m
2026-05-28 DTR4RY PAD → MUC May 28, 04:05 UTCMay 28, 05:05 UTC1h 0m
2026-05-27 DTR4HK MUC → PAD May 27, 18:40 UTCMay 27, 19:50 UTC1h 10m
2026-05-27 DTR4RM PAD → MUC May 27, 16:25 UTCMay 27, 17:25 UTC1h 0m
2026-05-27 DTR4WH MUC → PAD May 27, 12:55 UTCMay 27, 14:00 UTC1h 5m
2026-05-27 DTR4KR - May 27, 10:15 UTCMay 27, 11:25 UTC1h 10m
2026-05-27 DTR4LV MUC → PAD May 27, 07:40 UTCMay 27, 08:50 UTC1h 10m
2026-05-27 DTR4RY PAD → MUC May 27, 05:04 UTCMay 27, 06:09 UTC1h 5m
2026-05-26 DTR4HK MUC → PAD May 26, 18:45 UTCMay 26, 19:45 UTC1h 0m
2026-05-26 DTR4RM PAD → MUC May 26, 16:24 UTCMay 26, 17:30 UTC1h 5m
2026-05-26 DTR4VL MUC → PAD May 26, 12:35 UTCMay 26, 13:34 UTC1h 0m
2026-05-26 DTR233 LBC → MUC May 26, 09:49 UTCMay 26, 11:15 UTC1h 25m
2026-05-26 DTR232 MUC → LBC May 26, 07:34 UTCMay 26, 09:04 UTC1h 30m
2026-05-26 DTR4RY PAD → MUC May 26, 05:10 UTCMay 26, 06:20 UTC1h 10m
2026-05-25 DTR4WH MUC → PAD May 25, 15:45 UTCMay 25, 16:50 UTC1h 5m
2026-05-25 DTR23M - May 25, 13:00 UTCMay 25, 14:20 UTC1h 20m
2026-05-25 DTR2HC MUC → PEV May 25, 10:55 UTCMay 25, 12:10 UTC1h 15m
2026-05-25 DTR4KR - May 25, 08:15 UTCMay 25, 09:15 UTC1h 0m
2026-05-25 DTR4LV MUC → PAD May 25, 06:25 UTCMay 25, 07:30 UTC1h 5m
2026-05-25 DTR4RY PAD → MUC May 25, 04:05 UTCMay 25, 05:05 UTC1h 0m
2026-05-24 DTR4HK MUC → PAD May 24, 18:25 UTCMay 24, 19:30 UTC1h 5m
2026-05-24 DTR233 LBC → MUC May 24, 15:45 UTCMay 24, 17:10 UTC1h 25m
2026-05-24 DTR232 MUC → LBC May 24, 12:50 UTCMay 24, 14:20 UTC1h 30m
2026-05-24 DTR4KR PAD → MUC May 24, 10:15 UTCMay 24, 11:25 UTC1h 10m
2026-05-22 DTR4HK MUC → PAD May 22, 19:00 UTCMay 22, 20:05 UTC1h 5m
2026-05-22 DTR233 LBC → MUC May 22, 16:10 UTCMay 22, 17:40 UTC1h 30m
2026-05-22 DTR232 MUC → LBC May 22, 12:45 UTCMay 22, 14:20 UTC1h 35m
2026-05-22 DTR4KR - May 22, 10:15 UTCMay 22, 11:25 UTC1h 10m
2026-05-22 DTR4LV MUC → PAD May 22, 06:45 UTCMay 22, 07:50 UTC1h 5m
2026-05-22 DTR4RY PAD → MUC May 22, 04:15 UTCMay 22, 05:20 UTC1h 5m
2026-05-21 DTR4HK MUC → PAD May 21, 18:15 UTCMay 21, 19:20 UTC1h 5m
2026-05-21 DTR23M - May 21, 15:00 UTCMay 21, 16:15 UTC1h 15m
2026-05-21 DTR2HC MUC → PEV May 21, 12:55 UTCMay 21, 14:10 UTC1h 15m
2026-05-21 DTR4KR - May 21, 10:40 UTCMay 21, 11:45 UTC1h 5m
2026-05-21 DTR4LV MUC → PAD May 21, 06:25 UTCMay 21, 07:35 UTC1h 10m
2026-05-21 DTR4RY PAD → MUC May 21, 04:05 UTCMay 21, 05:10 UTC1h 5m
2026-05-20 DTR4HK MUC → PAD May 20, 18:40 UTCMay 20, 19:55 UTC1h 15m
2026-05-20 DTR4RM PAD → MUC May 20, 16:30 UTCMay 20, 17:35 UTC1h 5m
2026-05-20 DTR4WH MUC → PAD May 20, 12:55 UTCMay 20, 14:00 UTC1h 5m
2026-05-20 DTR4KR - May 20, 10:20 UTCMay 20, 11:25 UTC1h 5m

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

Mode-S 45CAAE frequently asked

What is Mode-S code 45CAAE?
45CAAE is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-RUN.
Where is Mode-S 45CAAE registered?
Mode-S code 45CAAE is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45CAAE broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45CAAE, octal 21345256, decimal 4,573,870.
What flights does 45CAAE operate?
Mode-S 45CAAE has broadcast 11 distinct callsigns, including DTR4HK, DTR4KR, DTR4RY, DTR4LV, DTR4WH.