Apparatus

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sensors Mode-S transponder

45A057

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-HBW · ROBINSON R-66

Hex
45A057
Octal
21320127
Decimal
4,563,031
Country
DK
Tail
OY-HBW
Type
R66
No current signal · last broadcast 5d ago
Flights observed
48
Distinct callsigns
1
Country
DK
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S 45A057.

Country allocation

The ICAO 24-bit address 45A057 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 1 distinct

Callsign Airline Flights Last seen
OYHBW - 48 2026-07-12

Recent flights last 48

DateFlightRouteTakeoffLandingDuration
2026-07-12 OYHBW - Jul 12, 13:10 UTCJul 12, 14:35 UTC1h 25m
2026-07-11 OYHBW - Jul 11, 08:30 UTCJul 11, 09:05 UTC35m
2026-07-09 OYHBW - Jul 9, 14:05 UTCJul 9, 14:55 UTC50m
2026-07-03 OYHBW - Jul 3, 14:50 UTCJul 3, 15:05 UTC15m
2026-07-03 OYHBW - Jul 3, 13:05 UTCJul 3, 13:15 UTC10m
2026-06-24 OYHBW - Jun 24, 05:05 UTCJun 24, 05:20 UTC15m
2026-06-22 OYHBW - Jun 22, 12:30 UTCJun 22, 12:54 UTC25m
2026-06-22 OYHBW - Jun 22, 05:54 UTCJun 22, 06:29 UTC35m
2026-06-16 OYHBW - Jun 16, 14:20 UTCJun 16, 14:30 UTC10m
2026-06-13 OYHBW - Jun 13, 07:45 UTCJun 13, 07:55 UTC10m
2026-06-12 OYHBW - Jun 12, 12:45 UTCJun 12, 12:55 UTC10m
2026-06-11 OYHBW - Jun 11, 05:55 UTCJun 11, 06:05 UTC10m
2026-06-08 OYHBW - Jun 8, 15:10 UTCJun 8, 15:20 UTC10m
2026-06-08 OYHBW - Jun 8, 10:05 UTCJun 8, 11:20 UTC1h 15m
2026-06-07 OYHBW - Jun 7, 13:55 UTCJun 7, 14:10 UTC15m
2026-06-07 OYHBW - Jun 7, 12:00 UTCJun 7, 12:10 UTC10m
2026-06-05 OYHBW - Jun 5, 07:05 UTCJun 5, 07:20 UTC15m
2026-05-20 OYHBW - May 20, 14:20 UTCMay 20, 14:40 UTC20m
2026-05-20 OYHBW - May 20, 10:00 UTCMay 20, 10:20 UTC20m
2026-05-19 OYHBW - May 19, 11:20 UTCMay 19, 11:50 UTC30m
2026-05-19 OYHBW - May 19, 06:15 UTCMay 19, 06:45 UTC30m
2026-05-16 OYHBW - May 16, 13:21 UTCMay 16, 13:35 UTC15m
2026-05-15 OYHBW - May 15, 06:30 UTCMay 15, 06:45 UTC15m
2026-05-14 OYHBW - May 14, 14:20 UTCMay 14, 14:30 UTC10m
2026-05-14 OYHBW - May 14, 08:05 UTCMay 14, 08:15 UTC10m
2026-05-13 OYHBW - May 13, 11:15 UTCMay 13, 11:45 UTC30m
2026-05-13 OYHBW - May 13, 06:50 UTCMay 13, 07:20 UTC30m
2026-05-10 OYHBW - May 10, 14:59 UTCMay 10, 15:09 UTC10m
2026-05-08 OYHBW - May 8, 11:44 UTCMay 8, 12:20 UTC35m
2026-05-08 OYHBW - May 8, 08:05 UTCMay 8, 08:19 UTC15m
2026-05-07 OYHBW - May 7, 10:35 UTCMay 7, 11:05 UTC30m
2026-05-07 OYHBW - May 7, 05:15 UTCMay 7, 05:40 UTC25m
2026-05-05 OYHBW - May 5, 19:30 UTCMay 5, 19:40 UTC10m
2026-05-05 OYHBW - May 5, 14:20 UTCMay 5, 15:01 UTC40m
2026-05-05 OYHBW - May 5, 08:15 UTCMay 5, 08:45 UTC30m
2026-05-01 OYHBW - May 1, 18:35 UTCMay 1, 18:45 UTC10m
2026-04-28 OYHBW - Apr 28, 08:45 UTCApr 28, 08:55 UTC10m
2026-04-27 OYHBW - Apr 27, 17:00 UTCApr 27, 17:10 UTC10m
2026-04-23 OYHBW - Apr 23, 06:01 UTCApr 23, 06:15 UTC15m
2026-04-22 OYHBW - Apr 22, 12:55 UTCApr 22, 13:25 UTC30m
2026-04-22 OYHBW - Apr 22, 07:05 UTCApr 22, 07:35 UTC30m
2026-04-20 OYHBW - Apr 20, 10:15 UTCApr 20, 10:40 UTC25m
2026-04-20 OYHBW - Apr 20, 06:05 UTCApr 20, 06:35 UTC30m
2026-04-17 OYHBW - Apr 17, 11:00 UTCApr 17, 11:10 UTC10m
2026-04-16 OYHBW - Apr 16, 05:39 UTCApr 16, 05:54 UTC15m
2026-04-15 OYHBW - Apr 15, 14:15 UTCApr 15, 14:55 UTC39m
2026-04-15 OYHBW - Apr 15, 11:00 UTCApr 15, 11:15 UTC15m
2026-04-15 OYHBW - Apr 15, 10:30 UTCApr 15, 10:55 UTC25m

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

Mode-S 45A057 frequently asked

What is Mode-S code 45A057?
45A057 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-HBW.
Where is Mode-S 45A057 registered?
Mode-S code 45A057 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45A057 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45A057, octal 21320127, decimal 4,563,031.
What flights does 45A057 operate?
Mode-S 45A057 has broadcast 1 distinct callsign, including OYHBW.