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sensors Mode-S transponder

501D20

ICAO 24-bit transponder address · allocated to Croatia

Currently assigned to 9A-CTK · AIRBUS A-320

Hex
501D20
Octal
24016440
Decimal
5,250,336
Country
HR
Tail
9A-CTK
Type
A320
Broadcasting now · callsign CFG9EF · 35,000 ft
Flights observed
83
Distinct callsigns
20
Country
HR
Last broadcast
22d ago

Current position

501D20 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 501D20 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
CFG4MF Condor Flugdienst 5 2026-07-23
CFG7KY Condor Flugdienst 4 2026-07-25
CFG7FL Condor Flugdienst 4 2026-07-23
CFG7FD Condor Flugdienst 4 2026-07-25
CFG1ZK - 4 2026-07-22
CFG8VC Condor Flugdienst 3 2026-07-26
CFG8KY Condor Flugdienst 3 2026-07-26
CFG7FM Condor Flugdienst 3 2026-07-23
CFG7DV Condor Flugdienst 3 2026-07-21
CFG7DL Condor Flugdienst 3 2026-07-21
CFG4PH - 3 2026-07-23
CFG4EM Condor Flugdienst 3 2026-07-26
CFG3WZ - 3 2026-07-22
CFG3MT - 3 2026-07-22
CFG3LP Condor Flugdienst 3 2026-07-22
CFG2TM Condor Flugdienst 3 2026-07-24
CFG2TJ Condor Flugdienst 3 2026-07-24
CFG2JH Condor Flugdienst 3 2026-07-24
CFG2AH Condor Flugdienst 3 2026-07-24
CFG9XM Condor Flugdienst 2 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CFG4EM PMI → HAM Jul 26, 10:35 UTCJul 26, 19:45 UTC9h 10m
2026-07-26 CFG8VC SPU → FRA Jul 26, 07:30 UTCJul 26, 08:50 UTC1h 20m
2026-07-26 CFG8KY FRA → SPU Jul 26, 05:05 UTCJul 26, 06:15 UTC1h 10m
2026-07-25 CFG9XM LPA → FRA Jul 25, 17:25 UTCJul 25, 21:00 UTC3h 35m
2026-07-25 CFG9WY FRA → LPA Jul 25, 11:00 UTCJul 25, 15:05 UTC4h 5m
2026-07-25 CFG7KY IBZ → FRA Jul 25, 06:35 UTCJul 25, 08:35 UTC2h 0m
2026-07-25 CFG7FD HAM → TFS Jul 25, 03:15 UTCJul 25, 05:15 UTC2h 0m
2026-07-24 CFG2TM FRA → RHO Jul 24, 18:25 UTCJul 24, 20:25 UTC2h 0m
2026-07-24 CFG2TJ FRA → IBZ Jul 24, 15:10 UTCJul 24, 17:00 UTC1h 50m
2026-07-24 CFG2JH SMI → FRA Jul 24, 10:15 UTCJul 24, 13:00 UTC2h 45m
2026-07-24 CFG2AH FRA → SMI Jul 24, 04:35 UTCJul 24, 06:55 UTC2h 20m
2026-07-23 CFG4PH FNC → FRA Jul 23, 15:40 UTCJul 23, 19:10 UTC3h 30m
2026-07-23 CFG4MF FRA → FNC Jul 23, 10:45 UTCJul 23, 14:40 UTC3h 55m
2026-07-23 CFG7FL HER → HAJ Jul 23, 06:35 UTCJul 23, 08:50 UTC2h 15m
2026-07-23 CFG7FM FRA → IBZ Jul 23, 03:25 UTCJul 23, 05:15 UTC1h 50m
2026-07-22 CFG3WZ - Jul 22, 16:25 UTCJul 22, 18:45 UTC2h 20m
2026-07-22 CFG1ZK FRA → KVA Jul 22, 13:10 UTCJul 22, 15:10 UTC2h 0m
2026-07-22 CFG3MT - Jul 22, 10:20 UTCJul 22, 11:40 UTC1h 20m
2026-07-22 CFG3LP FRA → HER Jul 22, 03:10 UTCJul 22, 05:25 UTC2h 15m
2026-07-21 CFG9KL FUE → FRA Jul 21, 16:25 UTCJul 21, 19:55 UTC3h 30m
2026-07-21 CFG9EF FRA → FUE Jul 21, 10:35 UTCJul 21, 14:25 UTC3h 50m
2026-07-21 CFG7DL SPU → FRA Jul 21, 07:25 UTCJul 21, 08:55 UTC1h 30m
2026-07-21 CFG7DV LEJ → CFU Jul 21, 04:45 UTCJul 21, 05:45 UTC1h 0m
2026-07-20 CFG5LT HER → FRA Jul 20, 17:25 UTCJul 20, 20:20 UTC2h 55m
2026-07-20 CFG4PT - Jul 20, 13:10 UTCJul 20, 15:40 UTC2h 30m
2026-07-20 CFG8CW LPA → DUS Jul 20, 06:30 UTCJul 20, 08:35 UTC2h 5m
2026-07-20 CFG8AV TFS → FRA Jul 20, 03:20 UTCJul 20, 05:20 UTC2h 0m
2026-07-19 CFG4EM FRA → FRA Jul 19, 10:30 UTCJul 19, 19:35 UTC9h 5m
2026-07-19 CFG8VC SPU → FRA Jul 19, 07:35 UTCJul 19, 09:00 UTC1h 25m
2026-07-19 CFG8KY FRA → SPU Jul 19, 04:55 UTCJul 19, 06:00 UTC1h 5m
2026-07-18 CFG7KY IBZ → FRA Jul 18, 06:35 UTCJul 18, 08:45 UTC2h 10m
2026-07-18 CFG7FD HAM → TFS Jul 18, 03:15 UTCJul 18, 05:20 UTC2h 5m
2026-07-17 CFG2TM IBZ → FRA Jul 17, 19:05 UTCJul 17, 21:10 UTC2h 5m
2026-07-17 CFG2TJ FRA → IBZ Jul 17, 15:29 UTCJul 17, 17:50 UTC2h 20m
2026-07-17 CFG2JH SMI → FRA Jul 17, 08:45 UTCJul 17, 11:30 UTC2h 45m
2026-07-17 CFG2AH FRA → SMI Jul 17, 04:39 UTCJul 17, 07:05 UTC2h 25m
2026-07-16 CFG4PH FNC → FRA Jul 16, 17:20 UTCJul 16, 20:49 UTC3h 30m
2026-07-16 CFG4MF - Jul 16, 14:40 UTCJul 16, 14:45 UTC5m
2026-07-16 CFG4MF - Jul 16, 10:45 UTCJul 16, 14:05 UTC3h 20m
2026-07-16 CFG7FL IBZ → FRA Jul 16, 06:45 UTCJul 16, 08:55 UTC2h 10m
2026-07-16 CFG7FL IBZ → IBZ Jul 16, 06:30 UTCJul 16, 06:40 UTC10m
2026-07-16 CFG7FM FRA → IBZ Jul 16, 03:25 UTCJul 16, 05:20 UTC1h 55m
2026-07-15 CFG3WZ - Jul 15, 16:30 UTCJul 15, 19:05 UTC2h 35m
2026-07-15 CFG1ZK - Jul 15, 13:05 UTCJul 15, 15:10 UTC2h 5m
2026-07-15 CFG3MT - Jul 15, 07:10 UTCJul 15, 10:10 UTC3h 0m
2026-07-15 CFG3LP - Jul 15, 03:00 UTCJul 15, 05:30 UTC2h 30m
2026-07-14 CFG7DL - Jul 14, 07:35 UTCJul 14, 08:55 UTC1h 20m
2026-07-14 CFG7DV - Jul 14, 04:50 UTCJul 14, 05:55 UTC1h 5m
2026-07-13 CFG5LT HER → FRA Jul 13, 17:50 UTCJul 13, 21:00 UTC3h 10m
2026-07-13 CFG4PT - Jul 13, 14:05 UTCJul 13, 16:35 UTC2h 30m

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

Mode-S 501D20 frequently asked

What is Mode-S code 501D20?
501D20 is an ICAO 24-bit transponder address. Allocated to Croatia. Assigned to 9A-CTK.
Where is Mode-S 501D20 registered?
Mode-S code 501D20 is allocated to Croatia (HR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 501D20 broadcasting right now?
Yes. Mode-S 501D20 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 501D20, octal 24016440, decimal 5,250,336.
What flights does 501D20 operate?
Mode-S 501D20 has broadcast 20 distinct callsigns, including CFG4MF, CFG7KY, CFG7FL, CFG7FD, CFG1ZK.