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sensors Mode-S transponder

506DC6

ICAO 24-bit transponder address · allocated to Slovenia

Currently assigned to S5-DYG · CESSNA 172 Skyhawk

Hex
506DC6
Octal
24066706
Decimal
5,270,982
Country
SI
Tail
S5-DYG
Type
C172
No current signal · last broadcast 7h ago
Flights observed
36
Distinct callsigns
1
Country
SI
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 506DC6.

Country allocation

The ICAO 24-bit address 506DC6 falls within the block assigned to Slovenia (SI) by ICAO Annex 10, Volume III. Every aircraft registered in Slovenia 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
S5DYG - 36 2026-06-02

Recent flights last 36

DateFlightRouteTakeoffLandingDuration
2026-06-02 S5DYG - Jun 2, 10:15 UTCJun 2, 13:00 UTC2h 45m
2026-06-02 S5DYG - Jun 2, 05:40 UTCJun 2, 07:05 UTC1h 25m
2026-05-31 S5DYG - May 31, 08:25 UTCMay 31, 10:15 UTC1h 50m
2026-05-30 S5DYG - May 30, 07:35 UTCMay 30, 08:00 UTC25m
2026-05-29 S5DYG - May 29, 08:00 UTCMay 29, 10:10 UTC2h 10m
2026-05-28 S5DYG - May 28, 11:40 UTCMay 28, 12:05 UTC25m
2026-05-28 S5DYG - May 28, 09:10 UTCMay 28, 09:25 UTC15m
2026-05-28 S5DYG - May 28, 06:20 UTCMay 28, 06:55 UTC35m
2026-05-27 S5DYG - May 27, 06:55 UTCMay 27, 09:10 UTC2h 15m
2026-05-26 S5DYG - May 26, 08:19 UTCMay 26, 10:50 UTC2h 30m
2026-05-25 S5DYG - May 25, 07:35 UTCMay 25, 09:20 UTC1h 45m
2026-05-23 S5DYG - May 23, 13:35 UTCMay 23, 14:10 UTC35m
2026-05-23 S5DYG - May 23, 10:35 UTCMay 23, 11:00 UTC25m
2026-05-23 S5DYG - May 23, 09:10 UTCMay 23, 09:25 UTC15m
2026-05-23 S5DYG - May 23, 07:55 UTCMay 23, 08:10 UTC15m
2026-05-23 S5DYG - May 23, 06:50 UTCMay 23, 07:05 UTC15m
2026-05-22 S5DYG - May 22, 10:15 UTCMay 22, 10:45 UTC30m
2026-05-09 S5DYG - May 9, 12:15 UTCMay 9, 13:35 UTC1h 20m
2026-05-09 S5DYG - May 9, 11:05 UTCMay 9, 11:45 UTC40m
2026-04-27 S5DYG - Apr 27, 08:50 UTCApr 27, 09:10 UTC20m
2026-04-27 S5DYG - Apr 27, 07:25 UTCApr 27, 07:55 UTC30m
2026-04-26 S5DYG - Apr 26, 08:10 UTCApr 26, 10:30 UTC2h 20m
2026-04-25 S5DYG - Apr 25, 11:10 UTCApr 25, 11:25 UTC15m
2026-04-25 S5DYG - Apr 25, 08:30 UTCApr 25, 08:45 UTC15m
2026-04-25 S5DYG - Apr 25, 07:15 UTCApr 25, 07:30 UTC15m
2026-04-24 S5DYG - Apr 24, 08:25 UTCApr 24, 10:55 UTC2h 30m
2026-04-20 S5DYG - Apr 20, 09:10 UTCApr 20, 09:25 UTC15m
2026-04-19 S5DYG - Apr 19, 07:15 UTCApr 19, 09:40 UTC2h 25m
2026-04-17 S5DYG - Apr 17, 11:20 UTCApr 17, 11:30 UTC10m
2026-04-17 S5DYG - Apr 17, 10:10 UTCApr 17, 11:15 UTC1h 5m
2026-04-16 S5DYG - Apr 16, 11:15 UTCApr 16, 12:05 UTC50m
2026-04-16 S5DYG - Apr 16, 10:25 UTCApr 16, 10:59 UTC35m
2026-04-13 S5DYG - Apr 13, 15:10 UTCApr 13, 15:40 UTC30m
2026-04-13 S5DYG - Apr 13, 08:20 UTCApr 13, 09:15 UTC55m
2026-04-13 S5DYG - Apr 13, 07:55 UTCApr 13, 09:15 UTC1h 20m
2026-04-13 S5DYG - Apr 13, 07:25 UTCApr 13, 08:15 UTC50m

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 S5-DYG page for operator, model, and routing details .

Mode-S 506DC6 frequently asked

What is Mode-S code 506DC6?
506DC6 is an ICAO 24-bit transponder address. Allocated to Slovenia. Assigned to S5-DYG.
Where is Mode-S 506DC6 registered?
Mode-S code 506DC6 is allocated to Slovenia (SI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 506DC6 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 506DC6, octal 24066706, decimal 5,270,982.
What flights does 506DC6 operate?
Mode-S 506DC6 has broadcast 1 distinct callsign, including S5DYG.