Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3451D6

ICAO 24-bit transponder address · allocated to Spain

Currently assigned to EC-MKE · ATR-72-500

Hex
3451D6
Octal
15050726
Decimal
3,428,822
Country
ES
Tail
EC-MKE
Type
AT75
No current signal · last broadcast 10h ago
Flights observed
78
Distinct callsigns
10
Country
ES
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 3451D6.

Country allocation

The ICAO 24-bit address 3451D6 falls within the block assigned to Spain (ES) by ICAO Annex 10, Volume III. Every aircraft registered in Spain 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 10 distinct

Callsign Airline Flights Last seen
SWT1CW Swiftair 24 2026-05-28
SWT2CW Swiftair 23 2026-05-28
SWT2SO Swiftair 7 2026-05-27
SWT1SO Swiftair 7 2026-05-27
SWT38U Swiftair 5 2026-05-08
SWT41C Swiftair 3 2026-05-08
SWT2KR Swiftair 3 2026-05-08
SWT2RP Swiftair 2 2026-05-29
SWT1RP Swiftair 2 2026-05-29
SWT1KR Swiftair 2 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SWT2RP OSR → CGN May 29, 20:10 UTCMay 29, 22:20 UTC2h 10m
2026-05-29 SWT1RP CGN → OSR May 29, 02:50 UTCMay 29, 04:30 UTC1h 40m
2026-05-28 SWT2CW WRO → CGN May 28, 20:40 UTCMay 28, 22:30 UTC1h 50m
2026-05-28 SWT1CW CGN → WRO May 28, 02:30 UTCMay 28, 04:05 UTC1h 35m
2026-05-27 SWT2SO TIA → CGN May 27, 18:10 UTCMay 27, 22:00 UTC3h 50m
2026-05-27 SWT1SO CGN → SOF May 27, 02:39 UTCMay 27, 05:49 UTC3h 10m
2026-05-26 SWT2CW WRO → CGN May 26, 20:29 UTCMay 26, 22:25 UTC1h 55m
2026-05-26 SWT1CW CGN → WRO May 26, 02:24 UTCMay 26, 03:55 UTC1h 30m
2026-05-25 SWT2CW WRO → CGN May 25, 20:50 UTCMay 25, 22:34 UTC1h 45m
2026-05-25 SWT1CW CGN → WRO May 25, 02:25 UTCMay 25, 04:05 UTC1h 40m
2026-05-22 SWT2SO TIA → CGN May 22, 17:40 UTCMay 22, 21:00 UTC3h 20m
2026-05-22 SWT1SO CGN → SOF May 22, 02:45 UTCMay 22, 06:00 UTC3h 15m
2026-05-21 SWT2CW WRO → CGN May 21, 21:05 UTCMay 21, 22:55 UTC1h 50m
2026-05-21 SWT1CW CGN → WRO May 21, 02:35 UTCMay 21, 04:05 UTC1h 30m
2026-05-20 SWT2CW WRO → CGN May 20, 20:55 UTCMay 20, 23:00 UTC2h 5m
2026-05-20 SWT1CW CGN → WRO May 20, 04:20 UTCMay 20, 06:20 UTC2h 1m
2026-05-20 SWT1CW CGN → WRO May 20, 02:45 UTCMay 20, 04:10 UTC1h 25m
2026-05-19 SWT2SO TIA → CGN May 19, 17:50 UTCMay 19, 21:15 UTC3h 25m
2026-05-19 SWT1SO CGN → SOF May 19, 02:55 UTCMay 19, 06:00 UTC3h 5m
2026-05-15 SWT2SO TIA → CGN May 15, 17:50 UTCMay 15, 21:05 UTC3h 15m
2026-05-15 SWT1SO CGN → SOF May 15, 02:45 UTCMay 15, 05:40 UTC2h 55m
2026-05-14 SWT2SO TIA → CGN May 14, 17:45 UTCMay 14, 21:00 UTC3h 15m
2026-05-14 SWT1SO CGN → SOF May 14, 02:35 UTCMay 14, 05:35 UTC3h 0m
2026-05-13 SWT2CW WRO → CGN May 13, 20:40 UTCMay 13, 22:40 UTC2h 0m
2026-05-13 SWT1CW CGN → WRO May 13, 02:45 UTCMay 13, 04:10 UTC1h 25m
2026-05-12 SWT2SO TIA → CGN May 12, 19:10 UTCMay 12, 22:50 UTC3h 40m
2026-05-12 SWT1SO CGN → SOF May 12, 02:45 UTCMay 12, 05:35 UTC2h 50m
2026-05-11 SWT2CW WRO → CGN May 11, 20:55 UTCMay 11, 22:35 UTC1h 39m
2026-05-11 SWT1CW CGN → WRO May 11, 02:35 UTCMay 11, 04:05 UTC1h 30m
2026-05-08 SWT38U KUN → CGN May 8, 18:55 UTCMay 8, 21:45 UTC2h 50m
2026-05-08 SWT2KR RIX → CGN May 8, 17:25 UTCMay 8, 18:00 UTC35m
2026-05-08 SWT41C KUN → RIX May 8, 06:09 UTCMay 8, 06:45 UTC35m
2026-05-08 SWT1KR CGN → KUN May 8, 02:14 UTCMay 8, 05:05 UTC2h 50m
2026-05-07 SWT2CW WRO → CGN May 7, 21:15 UTCMay 7, 22:59 UTC1h 45m
2026-05-07 SWT1CW CGN → WRO May 7, 02:40 UTCMay 7, 04:15 UTC1h 35m
2026-05-06 SWT2SO TIA → CGN May 6, 18:05 UTCMay 6, 21:10 UTC3h 5m
2026-05-06 SWT1SO CGN → SOF May 6, 02:40 UTCMay 6, 05:35 UTC2h 55m
2026-05-04 SWT2CW WRO → CGN May 4, 20:35 UTCMay 4, 22:30 UTC1h 55m
2026-05-04 SWT1CW CGN → WRO May 4, 02:25 UTCMay 4, 03:49 UTC1h 25m
2026-04-30 SWT2CW WRO → CGN Apr 30, 20:45 UTCApr 30, 22:20 UTC1h 35m
2026-04-30 SWT1CW CGN → WRO Apr 30, 02:30 UTCApr 30, 04:20 UTC1h 50m
2026-04-29 SWT2CW WRO → CGN Apr 29, 20:50 UTCApr 29, 22:45 UTC1h 55m
2026-04-29 SWT1CW CGN → WRO Apr 29, 02:30 UTCApr 29, 04:05 UTC1h 35m
2026-04-28 SWT2CW WRO → CGN Apr 28, 20:50 UTCApr 28, 22:49 UTC2h 0m
2026-04-28 SWT1CW CGN → WRO Apr 28, 02:25 UTCApr 28, 03:50 UTC1h 25m
2026-04-27 SWT2CW WRO → CGN Apr 27, 20:45 UTCApr 27, 22:35 UTC1h 50m
2026-04-27 SWT1CW CGN → WRO Apr 27, 02:30 UTCApr 27, 04:05 UTC1h 35m
2026-04-24 SWT2CW WRO → CGN Apr 24, 20:30 UTCApr 24, 22:15 UTC1h 45m
2026-04-24 SWT1CW CGN → WRO Apr 24, 02:20 UTCApr 24, 03:55 UTC1h 35m
2026-04-23 SWT2CW WRO → CGN Apr 23, 20:35 UTCApr 23, 22:25 UTC1h 50m

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 EC-MKE page for operator, model, and routing details .

Mode-S 3451D6 frequently asked

What is Mode-S code 3451D6?
3451D6 is an ICAO 24-bit transponder address. Allocated to Spain. Assigned to EC-MKE.
Where is Mode-S 3451D6 registered?
Mode-S code 3451D6 is allocated to Spain (ES). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3451D6 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3451D6, octal 15050726, decimal 3,428,822.
What flights does 3451D6 operate?
Mode-S 3451D6 has broadcast 10 distinct callsigns, including SWT1CW, SWT2CW, SWT2SO, SWT1SO, SWT38U.