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sensors Mode-S transponder

501C49

ICAO 24-bit transponder address · allocated to Croatia

Currently assigned to 9A-CAO · AIRBUS A220-100

Hex
501C49
Octal
24016111
Decimal
5,250,121
Country
HR
Tail
9A-CAO
Type
BCS1
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
660
Distinct callsigns
20
Country
HR
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S 501C49.

Country allocation

The ICAO 24-bit address 501C49 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 20 distinct

Callsign Airline Flights Last seen
CTN380 - 30 2026-07-22
CTN381 - 29 2026-07-22
CTN56E Croatia Airlines 24 2026-07-24
CTN456 Croatia Airlines 24 2026-07-24
CTN438P Croatia Airlines 21 2026-07-21
CTN39PR Croatia Airlines 20 2026-07-21
CTN4457 - 19 2026-07-19
CTN4456 - 19 2026-07-19
CTN321 - 19 2026-07-24
CTN320 Croatia Airlines 19 2026-07-24
CTN9HR - 16 2026-07-19
CTN410 Croatia Airlines 16 2026-07-19
CTN724D Croatia Airlines 14 2026-07-24
CTN3RC Croatia Airlines 12 2026-07-23
CTN385 Croatia Airlines 12 2026-06-21
CTN301 - 12 2026-07-23
CTN2S - 12 2026-07-16
CTN656 Croatia Airlines 11 2026-07-22
CTN76H - 10 2026-07-03
CTN384 Croatia Airlines 10 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CTN375 BCN → ZAG Jul 26, 19:20 UTCJul 26, 21:10 UTC1h 50m
2026-07-26 CTN72E ZAG → BCN Jul 26, 16:25 UTCJul 26, 18:10 UTC1h 45m
2026-07-26 CTN19H - Jul 26, 14:20 UTCJul 26, 15:25 UTC1h 5m
2026-07-26 CTN412 SPU → FRA Jul 26, 11:25 UTCJul 26, 12:50 UTC1h 25m
2026-07-26 CTN413 FRA → SPU Jul 26, 08:00 UTCJul 26, 09:05 UTC1h 5m
2026-07-26 CTN27D DBV → FRA Jul 26, 04:35 UTCJul 26, 06:15 UTC1h 40m
2026-07-25 CTN8W ZAG → DBV Jul 25, 19:25 UTCJul 25, 20:00 UTC35m
2026-07-25 CTN373 MAD → ZAG Jul 25, 10:40 UTCJul 25, 12:45 UTC2h 5m
2026-07-25 CTN37S ZAG → MAD Jul 25, 06:05 UTCJul 25, 08:45 UTC2h 40m
2026-07-24 CTN724D HAM → ZAG Jul 24, 19:10 UTCJul 24, 20:25 UTC1h 15m
2026-07-24 CTN624D ZAG → HAM Jul 24, 16:35 UTCJul 24, 18:10 UTC1h 35m
2026-07-24 CTN321 - Jul 24, 12:20 UTCJul 24, 13:00 UTC40m
2026-07-24 CTN320 ZAG → PRG Jul 24, 10:20 UTCJul 24, 11:15 UTC55m
2026-07-24 CTN56E BRU → ZAG Jul 24, 07:45 UTCJul 24, 09:00 UTC1h 15m
2026-07-24 CTN456 ZAG → BRU Jul 24, 05:00 UTCJul 24, 06:40 UTC1h 40m
2026-07-23 CTN301 - Jul 23, 20:15 UTCJul 23, 21:00 UTC45m
2026-07-23 CTN301 ATH → DBV Jul 23, 18:05 UTCJul 23, 19:25 UTC1h 20m
2026-07-23 CTN3RC DBV → ATH Jul 23, 15:35 UTCJul 23, 16:45 UTC1h 10m
2026-07-23 CTN3RC DBV → ATH Jul 23, 13:55 UTCJul 23, 14:35 UTC40m
2026-07-23 CTN461 ZRH → ZAG Jul 23, 10:10 UTCJul 23, 11:00 UTC50m
2026-07-23 CTN460 ZAG → ZRH Jul 23, 07:45 UTCJul 23, 08:50 UTC1h 5m
2026-07-23 CTN5H SPU → ZAG Jul 23, 04:30 UTCJul 23, 04:55 UTC25m
2026-07-22 CTN656 ZAG → SPU Jul 22, 20:20 UTCJul 22, 20:35 UTC15m
2026-07-22 CTN381 - Jul 22, 18:50 UTCJul 22, 19:00 UTC10m
2026-07-22 CTN381 - Jul 22, 17:10 UTCJul 22, 17:40 UTC30m
2026-07-22 CTN380 - Jul 22, 14:55 UTCJul 22, 15:30 UTC35m
2026-07-22 CTN380 - Jul 22, 13:20 UTCJul 22, 13:35 UTC15m
2026-07-22 CTN5N - Jul 22, 12:00 UTCJul 22, 12:10 UTC10m
2026-07-21 CTN301 - Jul 21, 19:15 UTCJul 21, 19:55 UTC40m
2026-07-21 CTN301 ATH → DBV Jul 21, 17:15 UTCJul 21, 18:35 UTC1h 20m
2026-07-21 CTN3RC DBV → ATH Jul 21, 15:05 UTCJul 21, 16:10 UTC1h 5m
2026-07-21 CTN3RC DBV → ATH Jul 21, 13:40 UTCJul 21, 14:20 UTC40m
2026-07-21 CTN39PR MUC → SPU Jul 21, 10:05 UTCJul 21, 10:50 UTC45m
2026-07-21 CTN438P SPU → MUC Jul 21, 06:40 UTCJul 21, 07:45 UTC1h 5m
2026-07-20 CTN495 LGW → SPU Jul 20, 18:50 UTCJul 20, 20:40 UTC1h 50m
2026-07-20 CTN494 SPU → LGW Jul 20, 15:20 UTCJul 20, 17:25 UTC2h 5m
2026-07-20 CTN321 - Jul 20, 12:25 UTCJul 20, 13:10 UTC45m
2026-07-20 CTN320 - Jul 20, 10:20 UTCJul 20, 11:10 UTC50m
2026-07-19 CTN4457 - Jul 19, 19:10 UTCJul 19, 20:25 UTC1h 15m
2026-07-19 CTN4456 - Jul 19, 16:30 UTCJul 19, 18:10 UTC1h 40m
2026-07-19 CTN6D DBV → ZAG Jul 19, 13:35 UTCJul 19, 14:10 UTC35m
2026-07-19 CTN660 - Jul 19, 12:05 UTCJul 19, 12:40 UTC35m
2026-07-19 CTN9HR - Jul 19, 08:45 UTCJul 19, 09:40 UTC55m
2026-07-19 CTN410 ZAG → FRA Jul 19, 05:35 UTCJul 19, 07:00 UTC1h 25m
2026-07-18 CTN656 ZAG → SPU Jul 18, 22:10 UTCJul 18, 22:30 UTC20m
2026-07-18 CTN481 - Jul 18, 09:30 UTCJul 18, 10:55 UTC1h 25m
2026-07-18 CTN480 ZAG → CPH Jul 18, 06:45 UTCJul 18, 08:15 UTC1h 30m
2026-07-17 CTN4409 - Jul 17, 20:40 UTCJul 17, 21:50 UTC1h 10m
2026-07-17 CTN4408 - Jul 17, 17:40 UTCJul 17, 18:50 UTC1h 10m
2026-07-17 CTN321 - Jul 17, 12:40 UTCJul 17, 13:29 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-CAO page for operator, model, and routing details .

Mode-S 501C49 frequently asked

What is Mode-S code 501C49?
501C49 is an ICAO 24-bit transponder address. Allocated to Croatia. Assigned to 9A-CAO.
Where is Mode-S 501C49 registered?
Mode-S code 501C49 is allocated to Croatia (HR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 501C49 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 501C49, octal 24016111, decimal 5,250,121.
What flights does 501C49 operate?
Mode-S 501C49 has broadcast 20 distinct callsigns, including CTN380, CTN381, CTN56E, CTN456, CTN438P.