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sensors Mode-S transponder

501C26

ICAO 24-bit transponder address · allocated to Croatia

Currently assigned to 9A-DAS · CESSNA 172 Skyhawk

Hex
501C26
Octal
24016046
Decimal
5,250,086
Country
HR
Tail
9A-DAS
Type
C172
No current signal · last broadcast Jul 24, 13:30 UTC
Flights observed
97
Distinct callsigns
1
Country
HR
Last broadcast
Jul 24, 13:30 UTC

Last known position

Most recent position reported by Mode-S 501C26.

Country allocation

The ICAO 24-bit address 501C26 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
9ADAS - 97 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 9ADAS - Jul 24, 12:45 UTCJul 24, 13:30 UTC45m
2026-07-24 9ADAS - Jul 24, 10:30 UTCJul 24, 11:20 UTC50m
2026-07-24 9ADAS - Jul 24, 08:50 UTCJul 24, 09:45 UTC55m
2026-07-23 9ADAS - Jul 23, 11:50 UTCJul 23, 13:10 UTC1h 20m
2026-07-23 9ADAS - Jul 23, 09:15 UTCJul 23, 10:35 UTC1h 20m
2026-07-23 9ADAS - Jul 23, 06:50 UTCJul 23, 08:25 UTC1h 35m
2026-07-22 9ADAS - Jul 22, 14:05 UTCJul 22, 15:20 UTC1h 15m
2026-07-22 9ADAS - Jul 22, 11:35 UTCJul 22, 13:15 UTC1h 40m
2026-07-21 9ADAS - Jul 21, 11:40 UTCJul 21, 13:05 UTC1h 25m
2026-07-21 9ADAS - Jul 21, 09:15 UTCJul 21, 10:25 UTC1h 10m
2026-07-21 9ADAS - Jul 21, 06:40 UTCJul 21, 08:15 UTC1h 35m
2026-06-26 9ADAS - Jun 26, 10:44 UTCJun 26, 11:20 UTC35m
2026-06-18 9ADAS - Jun 18, 13:50 UTCJun 18, 15:00 UTC1h 10m
2026-06-18 9ADAS - Jun 18, 11:25 UTCJun 18, 11:50 UTC25m
2026-06-18 9ADAS - Jun 18, 07:05 UTCJun 18, 08:00 UTC55m
2026-06-16 9ADAS - Jun 16, 13:40 UTCJun 16, 15:15 UTC1h 35m
2026-06-16 9ADAS - Jun 16, 08:10 UTCJun 16, 08:44 UTC35m
2026-06-11 9ADAS - Jun 11, 07:20 UTCJun 11, 07:40 UTC20m
2026-06-10 9ADAS - Jun 10, 13:10 UTCJun 10, 13:25 UTC15m
2026-06-09 9ADAS - Jun 9, 13:45 UTCJun 9, 14:55 UTC1h 10m
2026-06-09 9ADAS - Jun 9, 12:00 UTCJun 9, 12:30 UTC30m
2026-06-09 9ADAS - Jun 9, 10:00 UTCJun 9, 10:50 UTC50m
2026-06-09 9ADAS - Jun 9, 07:25 UTCJun 9, 08:50 UTC1h 25m
2026-06-08 9ADAS - Jun 8, 12:10 UTCJun 8, 13:35 UTC1h 25m
2026-06-08 9ADAS - Jun 8, 09:55 UTCJun 8, 11:05 UTC1h 10m
2026-06-08 9ADAS - Jun 8, 06:40 UTCJun 8, 08:10 UTC1h 30m
2026-06-02 9ADAS - Jun 2, 16:00 UTCJun 2, 17:25 UTC1h 25m
2026-06-02 9ADAS - Jun 2, 14:20 UTCJun 2, 14:55 UTC35m
2026-06-02 9ADAS - Jun 2, 12:35 UTCJun 2, 13:15 UTC40m
2026-06-02 9ADAS - Jun 2, 10:15 UTCJun 2, 11:20 UTC1h 5m
2026-06-02 9ADAS - Jun 2, 08:15 UTCJun 2, 09:15 UTC1h 0m
2026-05-28 9ADAS - May 28, 14:30 UTCMay 28, 15:15 UTC45m
2026-05-28 9ADAS - May 28, 11:55 UTCMay 28, 13:30 UTC1h 35m
2026-05-28 9ADAS - May 28, 09:45 UTCMay 28, 10:00 UTC15m
2026-05-27 9ADAS - May 27, 10:30 UTCMay 27, 11:35 UTC1h 5m
2026-05-27 9ADAS - May 27, 08:35 UTCMay 27, 09:15 UTC40m
2026-05-26 9ADAS - May 26, 14:35 UTCMay 26, 15:39 UTC1h 5m
2026-05-26 9ADAS - May 26, 11:39 UTCMay 26, 13:04 UTC1h 25m
2026-05-26 9ADAS - May 26, 09:49 UTCMay 26, 10:25 UTC35m
2026-05-26 9ADAS - May 26, 07:34 UTCMay 26, 08:50 UTC1h 15m
2026-05-25 9ADAS - May 25, 11:30 UTCMay 25, 12:20 UTC50m
2026-05-25 9ADAS - May 25, 09:45 UTCMay 25, 10:40 UTC55m
2026-05-25 9ADAS - May 25, 06:40 UTCMay 25, 07:10 UTC30m
2026-05-21 9ADAS - May 21, 16:10 UTCMay 21, 16:25 UTC15m
2026-05-21 9ADAS - May 21, 14:10 UTCMay 21, 14:55 UTC45m
2026-05-21 9ADAS - May 21, 13:15 UTCMay 21, 13:35 UTC20m
2026-05-21 9ADAS - May 21, 12:10 UTCMay 21, 12:40 UTC30m
2026-05-21 9ADAS - May 21, 09:45 UTCMay 21, 10:45 UTC1h 0m
2026-05-20 9ADAS - May 20, 07:40 UTCMay 20, 08:50 UTC1h 10m
2026-05-19 9ADAS - May 19, 09:40 UTCMay 19, 10:50 UTC1h 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 9A-DAS page for operator, model, and routing details .

Mode-S 501C26 frequently asked

What is Mode-S code 501C26?
501C26 is an ICAO 24-bit transponder address. Allocated to Croatia. Assigned to 9A-DAS.
Where is Mode-S 501C26 registered?
Mode-S code 501C26 is allocated to Croatia (HR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 501C26 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 13:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 501C26, octal 24016046, decimal 5,250,086.
What flights does 501C26 operate?
Mode-S 501C26 has broadcast 1 distinct callsign, including 9ADAS.