Apparatus

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sensors Mode-S transponder

45C86D

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-RCM · AIRBUS A-320

Hex
45C86D
Octal
21344155
Decimal
4,573,293
Country
DK
Tail
OY-RCM
Type
A320
No current signal · last broadcast 1h ago
Flights observed
215
Distinct callsigns
7
Country
DK
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 45C86D.

Country allocation

The ICAO 24-bit address 45C86D 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 7 distinct

Callsign Airline Flights Last seen
FLI459 - 65 2026-07-12
FLI453 - 60 2026-07-14
FLI450 - 42 2026-07-13
FLI456 - 39 2026-07-02
FLI451 - 7 2026-07-13
FLI480 Atlantic Airways 1 2026-06-11
FLI471 Atlantic Airways 1 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FLI453 - Jul 14, 10:40 UTCJul 14, 11:15 UTC35m
2026-07-13 FLI450 CPH → CPH Jul 13, 16:55 UTCJul 14, 09:15 UTC16h 20m
2026-07-13 FLI453 CPH → CPH Jul 13, 10:55 UTCJul 13, 15:40 UTC4h 45m
2026-07-13 FLI451 CPH → CPH Jul 13, 04:35 UTCJul 13, 09:40 UTC5h 5m
2026-07-12 FLI459 CPH → CPH Jul 12, 16:45 UTCJul 12, 21:20 UTC4h 35m
2026-07-12 FLI453 CPH → CPH Jul 12, 10:35 UTCJul 12, 15:30 UTC4h 55m
2026-07-12 FLI451 CPH → CPH Jul 12, 04:30 UTCJul 12, 09:25 UTC4h 55m
2026-07-11 FLI459 CPH → CPH Jul 11, 17:10 UTCJul 11, 21:50 UTC4h 40m
2026-07-11 FLI453 CPH → CPH Jul 11, 10:50 UTCJul 11, 15:35 UTC4h 45m
2026-07-11 FLI451 CPH → CPH Jul 11, 04:25 UTCJul 11, 09:05 UTC4h 40m
2026-07-10 FLI459 CPH → CPH Jul 10, 16:50 UTCJul 10, 21:35 UTC4h 45m
2026-07-10 FLI453 CPH → CPH Jul 10, 10:45 UTCJul 10, 15:30 UTC4h 45m
2026-07-09 FLI459 CPH → CPH Jul 9, 17:05 UTCJul 10, 09:15 UTC16h 10m
2026-07-09 FLI453 - Jul 9, 10:55 UTCJul 9, 15:40 UTC4h 45m
2026-07-08 FLI459 CPH → CPH Jul 8, 17:25 UTCJul 9, 09:10 UTC15h 45m
2026-07-08 FLI453 - Jul 8, 10:45 UTCJul 8, 15:40 UTC4h 55m
2026-07-07 FLI459 - Jul 7, 16:50 UTCJul 8, 09:00 UTC16h 10m
2026-07-07 FLI453 CPH → CPH Jul 7, 10:40 UTCJul 7, 15:25 UTC4h 45m
2026-07-06 FLI459 - Jul 6, 16:50 UTCJul 7, 09:00 UTC16h 10m
2026-07-06 FLI453 - Jul 6, 10:55 UTCJul 6, 15:45 UTC4h 50m
2026-07-06 FLI451 - Jul 6, 04:35 UTCJul 6, 09:35 UTC5h 0m
2026-07-05 FLI459 CPH → CPH Jul 5, 17:10 UTCJul 5, 21:50 UTC4h 40m
2026-07-05 FLI453 - Jul 5, 11:20 UTCJul 5, 15:55 UTC4h 35m
2026-07-05 FLI451 - Jul 5, 04:45 UTCJul 5, 09:30 UTC4h 45m
2026-07-04 FLI459 - Jul 4, 16:50 UTCJul 4, 21:40 UTC4h 50m
2026-07-04 FLI453 - Jul 4, 10:40 UTCJul 4, 15:40 UTC5h 0m
2026-07-04 FLI451 - Jul 4, 04:40 UTCJul 4, 09:25 UTC4h 45m
2026-07-03 FLI459 - Jul 3, 17:10 UTCJul 3, 21:55 UTC4h 45m
2026-07-03 FLI453 - Jul 3, 11:00 UTCJul 3, 15:35 UTC4h 35m
2026-07-02 FLI459 - Jul 2, 16:45 UTCJul 3, 09:10 UTC16h 25m
2026-07-02 FLI456 - Jul 2, 10:45 UTCJul 2, 15:30 UTC4h 45m
2026-07-01 FLI459 CPH → CPH Jul 1, 17:05 UTCJul 2, 09:15 UTC16h 10m
2026-07-01 FLI453 CPH → CPH Jul 1, 10:40 UTCJul 1, 15:10 UTC4h 30m
2026-06-30 FLI459 CPH → CPH Jun 30, 16:50 UTCJul 1, 09:05 UTC16h 15m
2026-06-30 FLI453 - Jun 30, 10:30 UTCJun 30, 15:35 UTC5h 5m
2026-06-29 FLI450 - Jun 29, 23:05 UTCJun 30, 09:15 UTC10h 11m
2026-06-29 FLI459 - Jun 29, 16:50 UTCJun 29, 21:39 UTC4h 50m
2026-06-29 FLI456 - Jun 29, 10:34 UTCJun 29, 15:24 UTC4h 50m
2026-06-29 FLI450 - Jun 29, 04:34 UTCJun 29, 09:20 UTC4h 45m
2026-06-28 FLI459 - Jun 28, 21:40 UTCJun 29, 03:05 UTC5h 25m
2026-06-28 FLI453 - Jun 28, 15:29 UTCJun 28, 20:34 UTC5h 5m
2026-06-28 FLI450 - Jun 28, 09:34 UTCJun 28, 13:49 UTC4h 15m
2026-06-27 FLI459 - Jun 27, 17:04 UTCJun 27, 20:34 UTC3h 30m
2026-06-27 FLI456 FAE → CPH Jun 27, 10:40 UTCJun 27, 15:49 UTC5h 10m
2026-06-26 FLI450 - Jun 26, 16:54 UTCJun 27, 09:19 UTC16h 25m
2026-06-26 FLI453 - Jun 26, 10:39 UTCJun 26, 15:29 UTC4h 50m
2026-06-25 FLI459 CPH → FAE Jun 25, 17:05 UTCJun 26, 09:14 UTC16h 10m
2026-06-25 FLI453 - Jun 25, 10:50 UTCJun 25, 15:50 UTC5h 0m
2026-06-24 FLI459 CPH → FAE Jun 24, 17:10 UTCJun 25, 09:20 UTC16h 10m
2026-06-24 FLI453 - Jun 24, 10:55 UTCJun 24, 15:49 UTC4h 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-RCM page for operator, model, and routing details .

Mode-S 45C86D frequently asked

What is Mode-S code 45C86D?
45C86D is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-RCM.
Where is Mode-S 45C86D registered?
Mode-S code 45C86D is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45C86D broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45C86D, octal 21344155, decimal 4,573,293.
What flights does 45C86D operate?
Mode-S 45C86D has broadcast 7 distinct callsigns, including FLI459, FLI453, FLI450, FLI456, FLI451.