Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

501C38

ICAO 24-bit transponder address · allocated to Croatia

Currently assigned to 9A-CAE · AIRBUS A220-300

Hex
501C38
Octal
24016070
Decimal
5,250,104
Country
HR
Tail
9A-CAE
Type
BCS3
No current signal · last broadcast Jul 26, 20:35 UTC
Flights observed
421
Distinct callsigns
20
Country
HR
Last broadcast
Jul 26, 20:35 UTC

Last known position

Most recent position reported by Mode-S 501C38.

Country allocation

The ICAO 24-bit address 501C38 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
CTN5NL Croatia Airlines 12 2026-07-25
CTN438P Croatia Airlines 12 2026-07-23
CTN39PR Croatia Airlines 12 2026-07-23
CTN4AS Croatia Airlines 10 2026-07-25
CTN481 Croatia Airlines 9 2026-06-14
CTN480 - 9 2026-06-14
CTN380 Croatia Airlines 9 2026-06-04
CTN4457 - 8 2026-07-16
CTN82W Croatia Airlines 7 2026-07-24
CTN82R Croatia Airlines 7 2026-07-24
CTN4456 - 7 2026-07-16
CTN381 Croatia Airlines 7 2026-06-04
CTN8A - 6 2026-07-25
CTN76H Croatia Airlines 6 2026-07-20
CTN75C Croatia Airlines 6 2026-07-20
CTN6B - 6 2026-07-18
CTN4353 Croatia Airlines 6 2026-07-19
CTN4352 Croatia Airlines 6 2026-07-18
CTN415 - 6 2026-06-30
CTN414 - 6 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CTN724D HAM → ZAG Jul 26, 19:15 UTCJul 26, 20:35 UTC1h 20m
2026-07-26 CTN624D ZAG → HAM Jul 26, 16:50 UTCJul 26, 18:20 UTC1h 30m
2026-07-26 CTN6H - Jul 26, 15:05 UTCJul 26, 15:50 UTC45m
2026-07-26 CTN756C ZRH → DBV Jul 26, 12:50 UTCJul 26, 14:10 UTC1h 20m
2026-07-26 CTN756R DBV → ZRH Jul 26, 09:50 UTCJul 26, 11:25 UTC1h 35m
2026-07-26 CTN4327 PRG → DBV Jul 26, 07:10 UTCJul 26, 08:30 UTC1h 20m
2026-07-26 CTN4326 DBV → PRG Jul 26, 04:45 UTCJul 26, 06:15 UTC1h 30m
2026-07-25 CTN27H FRA → DBV Jul 25, 17:20 UTCJul 25, 18:50 UTC1h 30m
2026-07-25 CTN27D DBV → FRA Jul 25, 14:10 UTCJul 25, 15:55 UTC1h 45m
2026-07-25 CTN8A - Jul 25, 12:40 UTCJul 25, 13:20 UTC40m
2026-07-25 CTN4AS AMS → ZAG Jul 25, 10:10 UTCJul 25, 11:35 UTC1h 25m
2026-07-25 CTN5NL ZAG → AMS Jul 25, 06:45 UTCJul 25, 08:30 UTC1h 45m
2026-07-24 CTN82W LHR → SPU Jul 24, 19:30 UTCJul 24, 21:10 UTC1h 40m
2026-07-24 CTN82R ZAG → LHR Jul 24, 16:05 UTCJul 24, 18:00 UTC1h 55m
2026-07-24 CTN487 ARN → ZAG Jul 24, 09:45 UTCJul 24, 11:40 UTC1h 55m
2026-07-24 CTN486 ZAG → ARN Jul 24, 06:20 UTCJul 24, 08:40 UTC2h 20m
2026-07-23 CTN437 - Jul 23, 19:30 UTCJul 23, 20:05 UTC35m
2026-07-23 CTN430 - Jul 23, 16:35 UTCJul 23, 17:35 UTC1h 0m
2026-07-23 CTN395 - Jul 23, 13:15 UTCJul 23, 14:05 UTC50m
2026-07-23 CTN394 SPU → MXP Jul 23, 10:45 UTCJul 23, 11:45 UTC1h 0m
2026-07-23 CTN39PR MUC → SPU Jul 23, 08:45 UTCJul 23, 09:30 UTC45m
2026-07-23 CTN438P SPU → MUC Jul 23, 06:30 UTCJul 23, 07:35 UTC1h 5m
2026-07-22 CTN3501 SNN → ORK Jul 22, 17:15 UTCJul 22, 19:35 UTC2h 20m
2026-07-22 CTN35RL SPU → DUB Jul 22, 12:55 UTCJul 22, 15:45 UTC2h 50m
2026-07-21 CTN104C NTE → SPU Jul 21, 17:35 UTCJul 21, 19:25 UTC1h 50m
2026-07-21 CTN4010 - Jul 21, 14:35 UTCJul 21, 16:40 UTC2h 5m
2026-07-21 CTN513 DUB → ZAG Jul 21, 10:25 UTCJul 21, 12:50 UTC2h 25m
2026-07-21 CTN512 - Jul 21, 05:50 UTCJul 21, 08:45 UTC2h 55m
2026-07-20 CTN32CZ PRG → SPU Jul 20, 18:30 UTCJul 20, 19:30 UTC1h 0m
2026-07-20 CTN4324 SPU → PRG Jul 20, 16:10 UTCJul 20, 17:15 UTC1h 5m
2026-07-20 CTN75C ZRH → SPU Jul 20, 13:10 UTCJul 20, 14:00 UTC50m
2026-07-20 CTN76H SPU → ZRH Jul 20, 11:00 UTCJul 20, 12:10 UTC1h 10m
2026-07-20 CTN39PR MUC → SPU Jul 20, 08:50 UTCJul 20, 09:30 UTC40m
2026-07-20 CTN438P SPU → MUC Jul 20, 06:35 UTCJul 20, 07:35 UTC1h 0m
2026-07-19 CTN3719 - Jul 19, 16:50 UTCJul 19, 19:00 UTC2h 10m
2026-07-19 CTN3718 SPU → KSD Jul 19, 13:40 UTCJul 19, 15:40 UTC2h 0m
2026-07-19 CTN513 DUB → ZAG Jul 19, 09:55 UTCJul 19, 12:10 UTC2h 15m
2026-07-19 CTN512 - Jul 19, 06:00 UTCJul 19, 08:50 UTC2h 50m
2026-07-19 CTN4353 IST → DBV Jul 19, 02:20 UTCJul 19, 03:40 UTC1h 20m
2026-07-18 CTN4352 SPU → IST Jul 18, 20:05 UTCJul 18, 21:30 UTC1h 25m
2026-07-18 CTN82W - Jul 18, 16:35 UTCJul 18, 18:15 UTC1h 40m
2026-07-18 CTN82R - Jul 18, 13:00 UTCJul 18, 15:15 UTC2h 15m
2026-07-18 CTN413 - Jul 18, 10:25 UTCJul 18, 11:30 UTC1h 5m
2026-07-18 CTN416 - Jul 18, 07:15 UTCJul 18, 08:30 UTC1h 15m
2026-07-18 CTN6B - Jul 18, 04:15 UTCJul 18, 05:00 UTC45m
2026-07-17 CTN664 - Jul 17, 21:55 UTCJul 17, 22:35 UTC40m
2026-07-17 CTN724D - Jul 17, 19:25 UTCJul 17, 20:44 UTC1h 20m
2026-07-17 CTN624D - Jul 17, 16:24 UTCJul 17, 17:55 UTC1h 30m
2026-07-17 CTN487 ARN → ZAG Jul 17, 09:35 UTCJul 17, 11:50 UTC2h 15m
2026-07-17 CTN486 ZAG → ARN Jul 17, 06:15 UTCJul 17, 08:20 UTC2h 5m

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-CAE page for operator, model, and routing details .

Mode-S 501C38 frequently asked

What is Mode-S code 501C38?
501C38 is an ICAO 24-bit transponder address. Allocated to Croatia. Assigned to 9A-CAE.
Where is Mode-S 501C38 registered?
Mode-S code 501C38 is allocated to Croatia (HR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 501C38 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 501C38, octal 24016070, decimal 5,250,104.
What flights does 501C38 operate?
Mode-S 501C38 has broadcast 20 distinct callsigns, including CTN5NL, CTN438P, CTN39PR, CTN4AS, CTN481.