Apparatus

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sensors Mode-S transponder

501DC8

ICAO 24-bit transponder address · allocated to Croatia

Currently assigned to 9A-DMG · CESSNA 172 Skyhawk

Hex
501DC8
Octal
24016710
Decimal
5,250,504
Country
HR
Tail
9A-DMG
Type
C172
No current signal · last broadcast 3d ago
Flights observed
77
Distinct callsigns
1
Country
HR
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 501DC8.

Country allocation

The ICAO 24-bit address 501DC8 falls within the block assigned to Croatia (HR) by ICAO Annex 10, Volume III. Every aircraft registered in Croatia 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
9ADMG - 77 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 9ADMG - Jul 26, 12:10 UTCJul 26, 12:40 UTC30m
2026-07-26 9ADMG - Jul 26, 10:20 UTCJul 26, 11:20 UTC1h 0m
2026-07-25 9ADMG - Jul 25, 12:55 UTCJul 25, 13:35 UTC40m
2026-07-24 9ADMG - Jul 24, 15:05 UTCJul 24, 15:15 UTC10m
2026-07-24 9ADMG - Jul 24, 11:25 UTCJul 24, 11:50 UTC25m
2026-07-23 9ADMG - Jul 23, 14:20 UTCJul 23, 14:45 UTC25m
2026-07-20 9ADMG - Jul 20, 06:40 UTCJul 20, 07:35 UTC55m
2026-07-19 9ADMG - Jul 19, 09:45 UTCJul 19, 10:20 UTC35m
2026-07-19 9ADMG - Jul 19, 04:55 UTCJul 19, 06:45 UTC1h 50m
2026-07-18 9ADMG - Jul 18, 04:50 UTCJul 18, 05:45 UTC55m
2026-07-17 9ADMG - Jul 17, 05:20 UTCJul 17, 07:05 UTC1h 45m
2026-07-16 9ADMG - Jul 16, 13:05 UTCJul 16, 15:19 UTC2h 15m
2026-07-16 9ADMG - Jul 16, 10:55 UTCJul 16, 11:25 UTC30m
2026-07-16 9ADMG - Jul 16, 08:45 UTCJul 16, 09:00 UTC15m
2026-07-16 9ADMG - Jul 16, 06:30 UTCJul 16, 06:50 UTC20m
2026-07-15 9ADMG - Jul 15, 08:50 UTCJul 15, 10:05 UTC1h 15m
2026-07-14 9ADMG - Jul 14, 09:10 UTCJul 14, 11:05 UTC1h 55m
2026-07-14 9ADMG - Jul 14, 05:10 UTCJul 14, 07:00 UTC1h 50m
2026-07-12 9ADMG - Jul 12, 05:10 UTCJul 12, 06:10 UTC1h 0m
2026-07-11 9ADMG - Jul 11, 14:30 UTCJul 11, 15:05 UTC35m
2026-07-11 9ADMG - Jul 11, 05:15 UTCJul 11, 06:30 UTC1h 15m
2026-07-10 9ADMG - Jul 10, 16:30 UTCJul 10, 17:00 UTC30m
2026-07-05 9ADMG - Jul 5, 05:35 UTCJul 5, 05:55 UTC20m
2026-07-04 9ADMG - Jul 4, 06:30 UTCJul 4, 07:00 UTC30m
2026-07-03 9ADMG - Jul 3, 13:45 UTCJul 3, 14:15 UTC30m
2026-07-03 9ADMG - Jul 3, 11:55 UTCJul 3, 12:20 UTC25m
2026-07-01 9ADMG - Jul 1, 06:30 UTCJul 1, 06:55 UTC25m
2026-06-29 9ADMG - Jun 29, 17:45 UTCJun 29, 19:05 UTC1h 20m
2026-06-28 9ADMG - Jun 28, 16:39 UTCJun 28, 18:29 UTC1h 50m
2026-06-28 9ADMG - Jun 28, 12:39 UTCJun 28, 13:25 UTC45m
2026-06-28 9ADMG - Jun 28, 10:50 UTCJun 28, 11:19 UTC30m
2026-06-28 9ADMG - Jun 28, 07:09 UTCJun 28, 07:50 UTC40m
2026-06-28 9ADMG - Jun 28, 06:05 UTCJun 28, 06:24 UTC20m
2026-06-27 9ADMG - Jun 27, 08:55 UTCJun 27, 09:09 UTC15m
2026-06-25 9ADMG - Jun 25, 13:45 UTCJun 25, 14:20 UTC35m
2026-06-25 9ADMG - Jun 25, 09:40 UTCJun 25, 09:50 UTC10m
2026-06-23 9ADMG - Jun 23, 06:39 UTCJun 23, 07:49 UTC1h 10m
2026-06-22 9ADMG - Jun 22, 06:35 UTCJun 22, 07:04 UTC30m
2026-06-22 9ADMG - Jun 22, 05:10 UTCJun 22, 05:49 UTC40m
2026-06-20 9ADMG - Jun 20, 15:09 UTCJun 20, 15:44 UTC35m
2026-06-20 9ADMG - Jun 20, 08:59 UTCJun 20, 09:19 UTC20m
2026-06-19 9ADMG - Jun 19, 12:39 UTCJun 19, 13:04 UTC25m
2026-06-19 9ADMG - Jun 19, 11:39 UTCJun 19, 12:04 UTC25m
2026-06-19 9ADMG - Jun 19, 07:39 UTCJun 19, 07:54 UTC15m
2026-06-18 9ADMG - Jun 18, 17:10 UTCJun 18, 17:45 UTC35m
2026-06-18 9ADMG - Jun 18, 15:45 UTCJun 18, 16:30 UTC45m
2026-06-17 9ADMG - Jun 17, 09:35 UTCJun 17, 09:50 UTC15m
2026-06-16 9ADMG - Jun 16, 09:30 UTCJun 16, 10:00 UTC30m
2026-06-12 9ADMG - Jun 12, 06:45 UTCJun 12, 07:00 UTC15m
2026-06-10 9ADMG - Jun 10, 12:25 UTCJun 10, 13:15 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 9A-DMG page for operator, model, and routing details .

Mode-S 501DC8 frequently asked

What is Mode-S code 501DC8?
501DC8 is an ICAO 24-bit transponder address. Allocated to Croatia. Assigned to 9A-DMG.
Where is Mode-S 501DC8 registered?
Mode-S code 501DC8 is allocated to Croatia (HR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 501DC8 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 501DC8, octal 24016710, decimal 5,250,504.
What flights does 501DC8 operate?
Mode-S 501DC8 has broadcast 1 distinct callsign, including 9ADMG.