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sensors Mode-S transponder

3C66AF

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIUO · AIRBUS A-320

Hex
3C66AF
Octal
17063257
Decimal
3,958,447
Country
DE
Tail
D-AIUO
Type
A320
Broadcasting now · callsign DLH1KX · 4,325 ft
Flights observed
627
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 20:35 UTC

Current position

3C66AF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C66AF 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
DLH4T Lufthansa 8 2026-07-26
DLH7VX Lufthansa 7 2026-07-21
DLH1YN Lufthansa 7 2026-07-21
DLH9VT - 6 2026-07-04
DLH8VC - 6 2026-07-22
DLH8CF - 6 2026-07-04
DLH7LA - 6 2026-07-13
DLH4UV - 6 2026-07-20
DLH3LR - 6 2026-07-12
DLH1LY Lufthansa 6 2026-07-22
DLH99P - 5 2026-07-12
DLH8KY Lufthansa 5 2026-07-22
DLH6RY Lufthansa 5 2026-07-21
DLH6NJ - 5 2026-06-30
DLH5PJ Lufthansa 5 2026-07-20
DLH3YE - 5 2026-07-21
DLH36M Lufthansa 5 2026-07-23
DLH1PP - 5 2026-06-30
DLH1HP - 5 2026-07-21
DLH02X - 5 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DLH4T MUC → BER Jul 26, 19:45 UTCJul 26, 20:35 UTC50m
2026-07-26 DLH9M HAM → MUC Jul 26, 17:35 UTCJul 26, 18:35 UTC1h 0m
2026-07-26 DLH9KL FRA → HAM Jul 26, 15:35 UTCJul 26, 16:30 UTC55m
2026-07-26 DLH97J FRA → MAD Jul 26, 12:10 UTCJul 26, 13:30 UTC1h 20m
2026-07-26 DLH66E MUC → BIO Jul 26, 09:40 UTCJul 26, 10:55 UTC1h 15m
2026-07-26 DLH9FL HEL → FRA Jul 26, 07:45 UTCJul 26, 08:25 UTC40m
2026-07-26 DLH8AA FRA → LHR Jul 26, 06:20 UTCJul 26, 06:55 UTC36m
2026-07-26 DLH1MA ATH → FRA Jul 26, 04:15 UTCJul 26, 05:10 UTC55m
2026-07-25 DLH9MC FRA → FCO Jul 25, 20:35 UTCJul 25, 21:30 UTC55m
2026-07-25 DLH1HR FRA → DUB Jul 25, 16:50 UTCJul 25, 19:05 UTC2h 15m
2026-07-25 DLH7EE HAM → FRA Jul 25, 13:35 UTCJul 25, 15:35 UTC2h 0m
2026-07-25 DLH3VE FRA → LHR Jul 25, 11:50 UTCJul 25, 12:20 UTC30m
2026-07-25 DLH6RL FRA → HAJ Jul 25, 10:10 UTCJul 25, 10:40 UTC30m
2026-07-25 DLH7EJ CTA → FRA Jul 25, 07:40 UTCJul 25, 08:35 UTC55m
2026-07-25 DLH6YA DRS → FRA Jul 25, 05:45 UTCJul 25, 06:45 UTC1h 0m
2026-07-24 DLH37N FRA → FAO Jul 24, 19:55 UTCJul 24, 20:50 UTC55m
2026-07-24 DLH44N LYS → MUC Jul 24, 17:45 UTCJul 24, 18:55 UTC1h 10m
2026-07-24 DLH1PX HAJ → MUC Jul 24, 15:40 UTCJul 24, 16:35 UTC55m
2026-07-24 DLH2JV - Jul 24, 14:00 UTCJul 24, 14:50 UTC50m
2026-07-24 DLH4PW - Jul 24, 11:55 UTCJul 24, 12:50 UTC55m
2026-07-24 DLH7LL OTP → FRA Jul 24, 10:05 UTCJul 24, 10:55 UTC50m
2026-07-24 DLH2LX HAJ → FRA Jul 24, 07:25 UTCJul 24, 08:55 UTC1h 30m
2026-07-24 DLH9JV FRA → DUS Jul 24, 04:55 UTCJul 24, 06:00 UTC1h 5m
2026-07-23 DLH36M OVD → MUC Jul 23, 16:40 UTCJul 23, 18:55 UTC2h 15m
2026-07-23 DLH02X - Jul 23, 13:10 UTCJul 23, 15:20 UTC2h 10m
2026-07-23 DLH33F - Jul 23, 11:25 UTCJul 23, 12:10 UTC45m
2026-07-23 DLH11H - Jul 23, 09:55 UTCJul 23, 10:30 UTC35m
2026-07-22 DLH1LY HAM → FRA Jul 22, 17:05 UTCJul 22, 18:45 UTC1h 40m
2026-07-22 DLH8VC - Jul 22, 14:40 UTCJul 22, 16:05 UTC1h 25m
2026-07-22 DLH2LJ - Jul 22, 11:55 UTCJul 22, 12:45 UTC50m
2026-07-22 DLH2ER ZRH → MUC Jul 22, 11:10 UTCJul 22, 11:50 UTC40m
2026-07-22 DLH8KY HAM → FRA Jul 22, 04:25 UTCJul 22, 05:00 UTC35m
2026-07-21 DLH6RY FRA → BLL Jul 21, 18:45 UTCJul 21, 19:15 UTC30m
2026-07-21 DLH3YE CGN → MUC Jul 21, 16:20 UTCJul 21, 17:05 UTC45m
2026-07-21 DLH2TT - Jul 21, 14:25 UTCJul 21, 15:10 UTC45m
2026-07-21 DLH8NH OMR → MUC Jul 21, 11:35 UTCJul 21, 12:50 UTC1h 15m
2026-07-21 DLH8VK FRA → BLQ Jul 21, 09:50 UTCJul 21, 10:50 UTC1h 0m
2026-07-21 DLH7VX GLA → FRA Jul 21, 07:50 UTCJul 21, 08:30 UTC40m
2026-07-21 DLH1YN MUC → PRG Jul 21, 06:20 UTCJul 21, 06:50 UTC30m
2026-07-21 DLH1HP - Jul 21, 03:10 UTCJul 21, 04:40 UTC1h 30m
2026-07-20 DLH5PJ EAP → FRA Jul 20, 20:10 UTCJul 20, 21:10 UTC1h 0m
2026-07-20 DLH36M - Jul 20, 16:55 UTCJul 20, 18:50 UTC1h 55m
2026-07-20 DLH02X - Jul 20, 13:10 UTCJul 20, 15:35 UTC2h 25m
2026-07-20 DLH1913 OLB → MUC Jul 20, 10:35 UTCJul 20, 11:45 UTC1h 10m
2026-07-20 DLH8PF MUC → SOF Jul 20, 07:45 UTCJul 20, 09:00 UTC1h 15m
2026-07-20 DLH4UV BER → MUC Jul 20, 05:30 UTCJul 20, 06:20 UTC50m
2026-07-19 DLH4T MUC → BER Jul 19, 19:50 UTCJul 19, 20:40 UTC50m
2026-07-19 DLH39T NTE → MUC Jul 19, 17:20 UTCJul 19, 18:45 UTC1h 25m
2026-07-19 DLH06C MUC → GRZ Jul 19, 14:45 UTCJul 19, 16:20 UTC1h 35m
2026-07-19 DLH1FF MUC → LJU Jul 19, 12:05 UTCJul 19, 13:10 UTC1h 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 D-AIUO page for operator, model, and routing details .

Mode-S 3C66AF frequently asked

What is Mode-S code 3C66AF?
3C66AF is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIUO.
Where is Mode-S 3C66AF registered?
Mode-S code 3C66AF is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66AF broadcasting right now?
Yes. Mode-S 3C66AF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C66AF, octal 17063257, decimal 3,958,447.
What flights does 3C66AF operate?
Mode-S 3C66AF has broadcast 20 distinct callsigns, including DLH4T, DLH7VX, DLH1YN, DLH9VT, DLH8VC.