Apparatus

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sensors Mode-S transponder

3C6421

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIAA · AIRBUS A-321

Hex
3C6421
Octal
17062041
Decimal
3,957,793
Country
DE
Tail
D-AIAA
Type
A321
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
244
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S 3C6421.

Country allocation

The ICAO 24-bit address 3C6421 falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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
CFG5MF - 9 2026-06-27
CFG3DJ - 7 2026-06-28
CFG7CF Condor Flugdienst 6 2026-07-23
CFG9HZ Condor Flugdienst 5 2026-07-22
CFG8PA - 5 2026-07-08
CFG7HL - 5 2026-06-29
CFG6JV Condor Flugdienst 5 2026-06-29
CFG5LE - 5 2026-06-29
CFG5KW Condor Flugdienst 5 2026-06-27
CFG3FZ Condor Flugdienst 5 2026-06-29
CFG2AW Condor Flugdienst 5 2026-07-22
CFG9RF Condor Flugdienst 4 2026-06-28
CFG7NH Condor Flugdienst 4 2026-07-25
CFG7DP - 4 2026-07-23
CFG6XA Condor Flugdienst 4 2026-06-28
CFG4700 - 4 2026-05-25
CFG3JH - 4 2026-06-28
CFG1WA Condor Flugdienst 4 2026-07-25
CFG8PU - 3 2026-07-08
CFG6RZ Condor Flugdienst 3 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CFG6LY PMI → DUS Jul 26, 18:55 UTCJul 26, 21:10 UTC2h 15m
2026-07-26 CFG8XD DUS → PMI Jul 26, 15:40 UTCJul 26, 17:45 UTC2h 5m
2026-07-25 CFG1WA PMI → DUS Jul 25, 08:00 UTCJul 25, 10:00 UTC2h 0m
2026-07-25 CFG7NH DUS → PMI Jul 25, 04:30 UTCJul 25, 06:40 UTC2h 10m
2026-07-23 CFG7DP FNC → DUS Jul 23, 17:25 UTCJul 23, 20:50 UTC3h 25m
2026-07-23 CFG7CF DUS → FNC Jul 23, 16:20 UTCJul 23, 16:30 UTC10m
2026-07-23 CFG7CF DUS → FNC Jul 23, 12:35 UTCJul 23, 15:40 UTC3h 5m
2026-07-22 CFG2AW LPA → DUS Jul 22, 16:45 UTCJul 22, 20:25 UTC3h 40m
2026-07-22 CFG9HZ DUS → LPA Jul 22, 04:05 UTCJul 22, 14:50 UTC10h 45m
2026-07-21 CFG1LP FRA → TFS Jul 21, 16:35 UTCJul 21, 20:05 UTC3h 30m
2026-07-21 CFG2CW DUS → ACE Jul 21, 10:40 UTCJul 21, 14:30 UTC3h 50m
2026-07-20 CFG4YM CFU → DUS Jul 20, 19:30 UTCJul 20, 21:50 UTC2h 20m
2026-07-20 CFG6DP LEJ → PMI Jul 20, 14:25 UTCJul 20, 16:00 UTC1h 35m
2026-07-20 CFG6EL BGI → FRA Jul 20, 07:45 UTCJul 20, 09:50 UTC2h 5m
2026-07-20 CFG4YZ DUS → CFU Jul 20, 04:20 UTCJul 20, 06:10 UTC1h 50m
2026-07-19 CFG4801 LEJ → DUS Jul 19, 20:00 UTCJul 19, 20:50 UTC50m
2026-07-19 CFG1597 CFU → MUC Jul 19, 17:30 UTCJul 19, 19:00 UTC1h 30m
2026-07-19 CFG1596 - Jul 19, 14:35 UTCJul 19, 15:55 UTC1h 20m
2026-07-19 CFG4800 FRA → DUS Jul 19, 11:10 UTCJul 19, 12:05 UTC55m
2026-07-18 CFG2PL - Jul 18, 17:55 UTCJul 18, 19:50 UTC1h 55m
2026-07-18 CFG2ZX FUE → LEJ Jul 18, 14:05 UTCJul 18, 16:05 UTC2h 0m
2026-07-18 CFG9FT HAJ → PMI Jul 18, 08:50 UTCJul 18, 10:45 UTC1h 55m
2026-07-18 CFG8MK DUS → PMI Jul 18, 05:10 UTCJul 18, 07:15 UTC2h 5m
2026-07-17 CFG6MZ AGP → FRA Jul 17, 17:44 UTCJul 17, 21:10 UTC3h 25m
2026-07-17 CFG3CL - Jul 17, 11:39 UTCJul 17, 15:35 UTC3h 55m
2026-07-17 CFG1HE DUS → XRY Jul 17, 07:35 UTCJul 17, 09:25 UTC1h 50m
2026-07-17 CFG9YV DUS → PMI Jul 17, 04:10 UTCJul 17, 06:15 UTC2h 5m
2026-07-15 CFG4CH - Jul 15, 18:35 UTCJul 15, 20:40 UTC2h 5m
2026-07-15 CFG4AF - Jul 15, 13:40 UTCJul 15, 16:00 UTC2h 20m
2026-07-13 CFG069 - Jul 13, 09:45 UTCJul 13, 20:35 UTC10h 50m
2026-07-12 CFG2PL - Jul 12, 17:40 UTCJul 12, 20:01 UTC2h 20m
2026-07-12 CFG1VU - Jul 12, 14:30 UTCJul 12, 16:25 UTC1h 55m
2026-07-12 CFG4826 - Jul 12, 10:45 UTCJul 12, 11:15 UTC30m
2026-07-09 CFG7DP FNC → DUS Jul 9, 16:45 UTCJul 9, 20:25 UTC3h 40m
2026-07-09 CFG7CF - Jul 9, 15:10 UTCJul 9, 15:20 UTC10m
2026-07-09 CFG7CF - Jul 9, 11:30 UTCJul 9, 14:35 UTC3h 5m
2026-07-08 CFG8PU - Jul 8, 10:30 UTCJul 8, 14:30 UTC4h 0m
2026-07-08 CFG8PA - Jul 8, 04:35 UTCJul 8, 08:45 UTC4h 10m
2026-07-07 CFG8PH BSL → PMI Jul 7, 08:25 UTCJul 7, 11:10 UTC2h 45m
2026-07-07 CFG7PT FRA → XRY Jul 7, 04:40 UTCJul 7, 07:10 UTC2h 30m
2026-07-06 CFG9ZX - Jul 6, 15:35 UTCJul 6, 17:40 UTC2h 5m
2026-07-06 CFG1AC - Jul 6, 12:25 UTCJul 6, 14:30 UTC2h 5m
2026-07-06 CFG6WU - Jul 6, 08:40 UTCJul 6, 10:55 UTC2h 15m
2026-07-06 CFG3XR - Jul 6, 05:10 UTCJul 6, 06:50 UTC1h 40m
2026-07-05 CFG9XY - Jul 5, 18:35 UTCJul 5, 19:55 UTC1h 20m
2026-07-05 CFG9CM FRA → SPU Jul 5, 15:40 UTCJul 5, 16:50 UTC1h 10m
2026-07-05 CFG8VC - Jul 5, 08:15 UTCJul 5, 09:35 UTC1h 20m
2026-07-05 CFG8KY - Jul 5, 05:40 UTCJul 5, 06:45 UTC1h 5m
2026-07-04 CFG3MC FNC → FRA Jul 4, 17:00 UTCJul 4, 20:45 UTC3h 45m
2026-07-04 CFG2AC - Jul 4, 15:30 UTCJul 4, 15:35 UTC5m

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 D-AIAA page for operator, model, and routing details .

Mode-S 3C6421 frequently asked

What is Mode-S code 3C6421?
3C6421 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIAA.
Where is Mode-S 3C6421 registered?
Mode-S code 3C6421 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6421 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 3C6421, octal 17062041, decimal 3,957,793.
What flights does 3C6421 operate?
Mode-S 3C6421 has broadcast 20 distinct callsigns, including CFG5MF, CFG3DJ, CFG7CF, CFG9HZ, CFG8PA.