Apparatus

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sensors Mode-S transponder

45CAA7

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-RUG · ATR-72-202

Hex
45CAA7
Octal
21345247
Decimal
4,573,863
Country
DK
Tail
OY-RUG
Type
AT72
No current signal · last broadcast Jul 26, 19:15 UTC
Flights observed
581
Distinct callsigns
20
Country
DK
Last broadcast
Jul 26, 19:15 UTC

Last known position

Most recent position reported by Mode-S 45CAA7.

Country allocation

The ICAO 24-bit address 45CAA7 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
DTR83L - 43 2026-07-02
DTR81R DAT Danish Air Transport 43 2026-07-25
DTR84H DAT Danish Air Transport 42 2026-07-25
DTR82P - 42 2026-07-02
DTR85M DAT Danish Air Transport 36 2026-07-25
DTR86V - 34 2026-07-04
DTR69C DAT Danish Air Transport 28 2026-07-25
DTR67H DAT Danish Air Transport 28 2026-07-24
DTR1826 DAT Danish Air Transport 27 2026-07-23
DTR1825 DAT Danish Air Transport 27 2026-07-23
DTR1841 DAT Danish Air Transport 26 2026-07-25
DTR1832 DAT Danish Air Transport 25 2026-07-25
DTR1842 DAT Danish Air Transport 23 2026-07-25
DTR1831 DAT Danish Air Transport 22 2026-07-25
DTR68A DAT Danish Air Transport 20 2026-07-23
DTR1836 DAT Danish Air Transport 20 2026-07-23
DTR69V DAT Danish Air Transport 16 2026-07-24
DTR1901 DAT Danish Air Transport 16 2026-07-23
DTR1828 DAT Danish Air Transport 13 2026-07-22
DTR1827 DAT Danish Air Transport 13 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DTR1843 CTA → LMP Jul 26, 18:20 UTCJul 26, 19:15 UTC55m
2026-07-26 DTR1844 LMP → CTA Jul 26, 16:05 UTCJul 26, 16:50 UTC45m
2026-07-26 DTR1845 CTA → LMP Jul 26, 11:30 UTCJul 26, 12:25 UTC55m
2026-07-26 DTR1846 LMP → PMO Jul 26, 09:40 UTCJul 26, 10:25 UTC45m
2026-07-25 DTR81R PMO → LMP Jul 25, 20:15 UTCJul 25, 21:00 UTC45m
2026-07-25 DTR84H LMP → PMO Jul 25, 18:20 UTCJul 25, 19:25 UTC1h 5m
2026-07-25 DTR87C PMO → LMP Jul 25, 16:50 UTCJul 25, 17:40 UTC50m
2026-07-25 DTR88N LMP → PMO Jul 25, 14:55 UTCJul 25, 15:40 UTC45m
2026-07-25 DTR1841 CTA → LMP Jul 25, 13:20 UTCJul 25, 14:10 UTC50m
2026-07-25 DTR1842 LMP → CTA Jul 25, 11:30 UTCJul 25, 12:15 UTC45m
2026-07-25 DTR85M PMO → LMP Jul 25, 10:05 UTCJul 25, 10:40 UTC35m
2026-07-25 DTR69C PNL → PMO Jul 25, 08:00 UTCJul 25, 08:35 UTC35m
2026-07-25 DTR1831 TPS → PNL Jul 25, 06:35 UTCJul 25, 06:50 UTC15m
2026-07-25 DTR1832 PNL → TPS Jul 25, 05:05 UTCJul 25, 05:25 UTC20m
2026-07-24 DTR1900 PNL → CTA Jul 24, 12:10 UTCJul 24, 13:00 UTC50m
2026-07-24 DTR69V PNL → CTA Jul 24, 10:35 UTCJul 24, 11:20 UTC45m
2026-07-24 DTR67H PMO → PNL Jul 24, 09:20 UTCJul 24, 09:40 UTC20m
2026-07-24 DTR69C PNL → PMO Jul 24, 07:35 UTCJul 24, 08:15 UTC40m
2026-07-24 DTR1831 TPS → PNL Jul 24, 06:15 UTCJul 24, 06:35 UTC20m
2026-07-24 DTR1832 PNL → TPS Jul 24, 05:05 UTCJul 24, 05:30 UTC25m
2026-07-23 DTR68A TPS → PNL Jul 23, 17:55 UTCJul 23, 18:30 UTC35m
2026-07-23 DTR1836 PNL → TPS Jul 23, 16:45 UTCJul 23, 17:10 UTC25m
2026-07-23 DTR1825 PMO → PNL Jul 23, 15:15 UTCJul 23, 15:55 UTC40m
2026-07-23 DTR1826 PNL → PMO Jul 23, 13:40 UTCJul 23, 14:05 UTC25m
2026-07-23 DTR1901 CTA → PNL Jul 23, 12:10 UTCJul 23, 13:00 UTC50m
2026-07-23 DTR69V PNL → CTA Jul 23, 10:30 UTCJul 23, 11:15 UTC45m
2026-07-23 DTR67H PMO → PNL Jul 23, 09:15 UTCJul 23, 09:50 UTC35m
2026-07-23 DTR69C PNL → PMO Jul 23, 07:40 UTCJul 23, 08:05 UTC25m
2026-07-23 DTR1831 TPS → PNL Jul 23, 06:15 UTCJul 23, 06:40 UTC25m
2026-07-23 DTR1832 PNL → TPS Jul 23, 05:05 UTCJul 23, 05:25 UTC20m
2026-07-22 DTR1825 PMO → PNL Jul 22, 18:25 UTCJul 22, 18:40 UTC15m
2026-07-22 DTR1826 PNL → PMO Jul 22, 16:45 UTCJul 22, 17:25 UTC40m
2026-07-22 DTR68A TPS → PNL Jul 22, 15:45 UTCJul 22, 16:00 UTC15m
2026-07-22 DTR1836 PNL → TPS Jul 22, 14:10 UTCJul 22, 14:45 UTC35m
2026-07-22 DTR1827 PMO → PNL Jul 22, 13:10 UTCJul 22, 13:30 UTC20m
2026-07-22 DTR1828 PNL → PMO Jul 22, 11:25 UTCJul 22, 12:00 UTC35m
2026-07-22 DTR1832 PNL → TPS Jul 22, 05:05 UTCJul 22, 05:25 UTC20m
2026-07-18 DTR1827 PMO → PNL Jul 18, 12:00 UTCJul 18, 12:35 UTC35m
2026-07-18 DTR1828 - Jul 18, 10:30 UTCJul 18, 11:10 UTC40m
2026-07-17 DTR1825 - Jul 17, 15:29 UTCJul 17, 15:55 UTC25m
2026-07-17 DTR1826 - Jul 17, 13:55 UTCJul 17, 14:30 UTC35m
2026-07-17 DTR1901 - Jul 17, 12:25 UTCJul 17, 13:10 UTC45m
2026-07-17 DTR69V - Jul 17, 10:35 UTCJul 17, 11:15 UTC40m
2026-07-16 DTR1901 - Jul 16, 12:14 UTCJul 16, 13:00 UTC45m
2026-07-16 DTR69V - Jul 16, 10:25 UTCJul 16, 11:20 UTC55m
2026-07-16 DTR67H - Jul 16, 09:25 UTCJul 16, 09:35 UTC10m
2026-07-16 DTR69C - Jul 16, 07:30 UTCJul 16, 08:20 UTC50m
2026-07-16 DTR1831 - Jul 16, 06:15 UTCJul 16, 06:45 UTC30m
2026-07-16 DTR1832 - Jul 16, 05:10 UTCJul 16, 05:40 UTC30m
2026-07-11 DTR68A - Jul 11, 16:20 UTCJul 11, 17:50 UTC1h 30m

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

Mode-S 45CAA7 frequently asked

What is Mode-S code 45CAA7?
45CAA7 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-RUG.
Where is Mode-S 45CAA7 registered?
Mode-S code 45CAA7 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45CAA7 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45CAA7, octal 21345247, decimal 4,573,863.
What flights does 45CAA7 operate?
Mode-S 45CAA7 has broadcast 20 distinct callsigns, including DTR83L, DTR81R, DTR84H, DTR82P, DTR85M.