Apparatus

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sensors Mode-S transponder

45D066

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-TCF · AIRBUS A-321

Hex
45D066
Octal
21350146
Decimal
4,575,334
Country
DK
Tail
OY-TCF
Type
A321
No current signal · last broadcast 23d ago
Flights observed
209
Distinct callsigns
20
Country
DK
Last broadcast
23d ago

Last known position

Most recent position reported by Mode-S 45D066.

Country allocation

The ICAO 24-bit address 45D066 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
VKG047 - 10 2026-07-21
VKG046 - 10 2026-07-21
VKG607 - 9 2026-07-24
VKG574 - 9 2026-07-22
VKG562 - 9 2026-07-25
VKG543 - 9 2026-07-25
VKG616 SunClass Airlines 8 2026-07-24
VKG575 - 8 2026-07-22
VKG051 - 8 2026-07-20
VKG045 - 8 2026-07-20
VKG037 - 7 2026-07-20
VKG036 - 7 2026-07-20
VKG129 - 6 2026-06-23
VKG128 - 6 2026-06-23
VKG805 SunClass Airlines 5 2026-07-23
VKG603 - 5 2026-07-24
VKG602 - 5 2026-07-24
VKG184 - 5 2026-06-19
VKG804 SunClass Airlines 4 2026-07-23
VKG653 - 4 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VKG4998 CPH → ARN Jul 26, 07:50 UTCJul 26, 08:35 UTC45m
2026-07-25 VKG543 - Jul 25, 20:35 UTCJul 26, 00:35 UTC4h 0m
2026-07-25 VKG562 - Jul 25, 15:15 UTCJul 25, 18:40 UTC3h 25m
2026-07-24 VKG603 - Jul 24, 22:55 UTCJul 25, 03:25 UTC4h 30m
2026-07-24 VKG602 - Jul 24, 16:55 UTCJul 24, 21:00 UTC4h 5m
2026-07-24 VKG607 - Jul 24, 11:30 UTCJul 24, 15:35 UTC4h 5m
2026-07-24 VKG616 GOT → BJL Jul 24, 05:15 UTCJul 24, 08:40 UTC3h 25m
2026-07-23 VKG805 AYT → OSL Jul 23, 22:05 UTCJul 24, 02:15 UTC4h 10m
2026-07-23 VKG804 OSL → AYT Jul 23, 16:40 UTCJul 23, 20:15 UTC3h 35m
2026-07-23 VKG597 - Jul 23, 11:10 UTCJul 23, 15:05 UTC3h 55m
2026-07-23 VKG570 - Jul 23, 05:55 UTCJul 23, 09:25 UTC3h 30m
2026-07-22 VKG575 RHO → OSL Jul 22, 21:05 UTCJul 23, 01:05 UTC4h 0m
2026-07-22 VKG652 ARN → RHO Jul 22, 15:55 UTCJul 22, 19:30 UTC3h 35m
2026-07-22 VKG653 - Jul 22, 11:10 UTCJul 22, 14:00 UTC2h 50m
2026-07-22 VKG574 - Jul 22, 05:00 UTCJul 22, 05:25 UTC25m
2026-07-21 VKG837 OSL → MAH Jul 21, 22:05 UTCJul 22, 02:20 UTC4h 15m
2026-07-21 VKG836 - Jul 21, 16:50 UTCJul 21, 20:40 UTC3h 50m
2026-07-21 VKG047 - Jul 21, 11:25 UTCJul 21, 14:45 UTC3h 20m
2026-07-21 VKG047 - Jul 21, 09:55 UTCJul 21, 10:20 UTC25m
2026-07-21 VKG046 - Jul 21, 04:55 UTCJul 21, 07:55 UTC3h 0m
2026-07-20 VKG051 - Jul 20, 22:45 UTCJul 21, 03:10 UTC4h 24m
2026-07-20 VKG045 - Jul 20, 16:50 UTCJul 20, 21:00 UTC4h 10m
2026-07-20 VKG037 - Jul 20, 10:50 UTCJul 20, 14:05 UTC3h 15m
2026-07-20 VKG036 - Jul 20, 06:10 UTCJul 20, 09:00 UTC2h 50m
2026-07-19 VKG589 - Jul 19, 14:50 UTCJul 19, 19:50 UTC5h 0m
2026-07-19 VKG588 - Jul 19, 07:50 UTCJul 19, 13:10 UTC5h 20m
2026-07-18 VKG543 - Jul 18, 21:35 UTCJul 19, 01:10 UTC3h 35m
2026-07-18 VKG562 - Jul 18, 16:20 UTCJul 18, 20:05 UTC3h 45m
2026-07-17 VKG603 - Jul 17, 22:25 UTCJul 18, 03:00 UTC4h 36m
2026-07-17 VKG602 OSL → LCA Jul 17, 16:49 UTCJul 17, 21:05 UTC4h 15m
2026-07-17 VKG607 - Jul 17, 11:10 UTCJul 17, 15:00 UTC3h 50m
2026-07-17 VKG616 GOT → BJL Jul 17, 05:50 UTCJul 17, 09:35 UTC3h 45m
2026-07-16 VKG805 AYT → OSL Jul 16, 23:05 UTCJul 17, 02:59 UTC3h 55m
2026-07-16 VKG804 OSL → AYT Jul 16, 17:30 UTCJul 16, 21:30 UTC4h 0m
2026-07-16 VKG597 - Jul 16, 12:00 UTCJul 16, 15:40 UTC3h 40m
2026-07-16 VKG570 - Jul 16, 06:20 UTCJul 16, 10:04 UTC3h 45m
2026-07-15 VKG575 RHO → OSL Jul 15, 22:30 UTCJul 16, 02:30 UTC4h 0m
2026-07-15 VKG652 ARN → RHO Jul 15, 16:40 UTCJul 15, 20:15 UTC3h 35m
2026-07-15 VKG653 RHO → ARN Jul 15, 11:15 UTCJul 15, 15:05 UTC3h 50m
2026-07-15 VKG574 OSL → RHO Jul 15, 05:55 UTCJul 15, 09:40 UTC3h 45m
2026-07-14 VKG837 - Jul 14, 22:00 UTCJul 15, 02:00 UTC3h 59m
2026-07-14 VKG836 OSL → GZP Jul 14, 16:35 UTCJul 14, 20:25 UTC3h 50m
2026-07-14 VKG047 - Jul 14, 10:00 UTCJul 14, 13:25 UTC3h 25m
2026-07-14 VKG046 - Jul 14, 05:25 UTCJul 14, 08:25 UTC3h 0m
2026-07-13 VKG051 - Jul 13, 22:45 UTCJul 14, 03:05 UTC4h 20m
2026-07-13 VKG045 - Jul 13, 16:45 UTCJul 13, 21:00 UTC4h 15m
2026-07-13 VKG037 PVK → OSL Jul 13, 10:55 UTCJul 13, 14:15 UTC3h 20m
2026-07-13 VKG036 OSL → PVK Jul 13, 06:25 UTCJul 13, 09:40 UTC3h 15m
2026-07-12 VKG589 - Jul 12, 14:30 UTCJul 12, 19:10 UTC4h 40m
2026-07-12 VKG588 - Jul 12, 07:25 UTCJul 12, 12:35 UTC5h 10m

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

Mode-S 45D066 frequently asked

What is Mode-S code 45D066?
45D066 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-TCF.
Where is Mode-S 45D066 registered?
Mode-S code 45D066 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45D066 broadcasting right now?
No active broadcast right now. Last signal was 23d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45D066, octal 21350146, decimal 4,575,334.
What flights does 45D066 operate?
Mode-S 45D066 has broadcast 20 distinct callsigns, including VKG047, VKG046, VKG607, VKG574, VKG562.