Apparatus

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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
No current signal · last broadcast 3h ago
Flights observed
280
Distinct callsigns
20
Country
DE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3C66AF.

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
DLH8NP Lufthansa 4 2026-05-27
DLH7LA Lufthansa 4 2026-05-16
DLH7JT Lufthansa 3 2026-05-24
DLH6NJ Lufthansa 3 2026-05-23
DLH6AN Lufthansa 3 2026-04-28
DLH5MA Lufthansa 3 2026-05-27
DLH4T Lufthansa 3 2026-05-14
DLH4LY Lufthansa 3 2026-05-14
DLH4KX Lufthansa 3 2026-05-13
DLH4HX Lufthansa 3 2026-04-28
DLH49M Lufthansa 3 2026-04-30
DLH3YE Lufthansa 3 2026-05-09
DLH2JW Lufthansa 3 2026-05-24
DLH1PP Lufthansa 3 2026-05-23
DLH03A Lufthansa 3 2026-04-30
DLH02P Lufthansa 3 2026-06-02
DLH9XC Lufthansa 2 2026-05-26
DLH9VT Lufthansa 2 2026-05-30
DLH99X Lufthansa 2 2026-05-24
DLH99P Lufthansa 2 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 DLH02P FRA → BIO Jun 2, 20:05 UTCJun 2, 21:45 UTC1h 40m
2026-06-02 DLH1EP FRA → HAM Jun 2, 18:25 UTCJun 2, 19:05 UTC40m
2026-06-02 DLH4UY DUS → MUC Jun 2, 16:25 UTCJun 2, 16:55 UTC30m
2026-06-02 DLH6LX BUD → FRA Jun 2, 13:15 UTCJun 2, 15:25 UTC2h 10m
2026-06-02 DLH3FP FRA → BHX Jun 2, 09:50 UTCJun 2, 12:05 UTC2h 15m
2026-06-02 DLH7VX GLA → FRA Jun 2, 07:50 UTCJun 2, 08:25 UTC35m
2026-06-02 DLH1YN MUC → PRG Jun 2, 06:20 UTCJun 2, 06:55 UTC35m
2026-06-02 DLH8KY HAM → FRA Jun 2, 04:20 UTCJun 2, 04:55 UTC35m
2026-06-01 DLH6RY FRA → BLL Jun 1, 18:45 UTCJun 1, 19:20 UTC35m
2026-06-01 DLH7E HAM → MUC Jun 1, 16:45 UTCJun 1, 17:40 UTC55m
2026-06-01 DLH2HL MUC → HAM Jun 1, 15:00 UTCJun 1, 15:55 UTC55m
2026-06-01 DLH97J FRA → MAD Jun 1, 12:20 UTCJun 1, 13:35 UTC1h 15m
2026-06-01 DLH66E MUC → BIO Jun 1, 10:05 UTCJun 1, 11:20 UTC1h 15m
2026-06-01 DLH33K FRA → MAD Jun 1, 05:40 UTCJun 1, 08:15 UTC2h 35m
2026-05-31 DLH41U FRA → LIS May 31, 19:50 UTCMay 31, 22:35 UTC2h 45m
2026-05-31 DLH66J PMI → MUC May 31, 14:40 UTCMay 31, 16:25 UTC1h 45m
2026-05-31 DLH09Y NCE → MUC May 31, 08:45 UTCMay 31, 10:15 UTC1h 30m
2026-05-30 DLH4MT MUC → FCO May 30, 18:40 UTCMay 30, 19:45 UTC1h 5m
2026-05-30 DLH9VT TSR → FRA May 30, 11:05 UTCMay 30, 12:40 UTC1h 35m
2026-05-30 DLH8CF OSL → FRA May 30, 08:30 UTCMay 30, 09:50 UTC1h 20m
2026-05-30 DLH1715 TIA → MUC May 30, 04:05 UTCMay 30, 05:35 UTC1h 30m
2026-05-29 DLH1714 MUC → TIA May 29, 20:10 UTCMay 29, 21:25 UTC1h 15m
2026-05-29 DLH5YW SOF → MUC May 29, 16:50 UTCMay 29, 18:30 UTC1h 40m
2026-05-29 DLH5KX MAN → MUC May 29, 14:15 UTCMay 29, 15:40 UTC1h 25m
2026-05-29 DLH06H NCE → MUC May 29, 12:00 UTCMay 29, 13:05 UTC1h 5m
2026-05-29 DLH99H TLS → MUC May 29, 09:35 UTCMay 29, 10:40 UTC1h 5m
2026-05-29 DLH1E HAM → MUC May 29, 06:50 UTCMay 29, 07:55 UTC1h 5m
2026-05-29 DLH8PL BER → FRA May 29, 05:00 UTCMay 29, 06:05 UTC1h 5m
2026-05-28 DLH9AC BLL → FRA May 28, 18:10 UTCMay 28, 19:25 UTC1h 15m
2026-05-28 DLH1710 - May 28, 16:45 UTCMay 28, 17:15 UTC30m
2026-05-28 DLH9WE FRA → SVG May 28, 13:35 UTCMay 28, 15:35 UTC2h 0m
2026-05-28 DLH1913 OLB → MUC May 28, 10:15 UTCMay 28, 11:30 UTC1h 15m
2026-05-28 DLH8PF MUC → SOF May 28, 07:45 UTCMay 28, 08:55 UTC1h 10m
2026-05-28 DLH5HV FRA → HAM May 28, 05:40 UTCMay 28, 06:25 UTC45m
2026-05-27 DLH8NP MUC → DUS May 27, 17:35 UTCMay 27, 18:30 UTC55m
2026-05-27 DLH3UV FRA → HEL May 27, 15:45 UTCMay 27, 16:40 UTC55m
2026-05-27 DLH5NF FRA → KEF May 27, 13:50 UTCMay 27, 14:40 UTC50m
2026-05-27 DLH5MA FRA → HAM May 27, 10:55 UTCMay 27, 12:10 UTC1h 15m
2026-05-27 DLH5KH MUC → OSL May 27, 08:40 UTCMay 27, 09:55 UTC1h 15m
2026-05-27 DLH99P BIO → FRA May 27, 05:19 UTCMay 27, 07:05 UTC1h 46m
2026-05-26 DLH02P FRA → BIO May 26, 19:25 UTCMay 26, 21:04 UTC1h 40m
2026-05-26 DLH6CJ FRA → LHR May 26, 15:20 UTCMay 26, 16:40 UTC1h 20m
2026-05-26 DLH9XC FRA → MXP May 26, 13:00 UTCMay 26, 14:09 UTC1h 10m
2026-05-26 DLH8LY FRA → DUB May 26, 09:49 UTCMay 26, 11:44 UTC1h 55m
2026-05-26 DLH6LK FRA → HAM May 26, 06:54 UTCMay 26, 08:45 UTC1h 50m
2026-05-26 DLH8MC FCO → MUC May 26, 04:24 UTCMay 26, 05:15 UTC50m
2026-05-25 DLH2N MUC → BER May 25, 18:10 UTCMay 25, 19:05 UTC55m
2026-05-25 DLH68W BCN → FRA May 25, 11:10 UTCMay 25, 12:40 UTC1h 30m
2026-05-25 DLH44U FRA → VLC May 25, 08:45 UTCMay 25, 10:10 UTC1h 25m
2026-05-25 DLH7JE MUC → HAM May 25, 06:35 UTCMay 25, 07:35 UTC1h 0m

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?
No active broadcast right now. Last signal was 3h ago.
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 DLH8NP, DLH7LA, DLH7JT, DLH6NJ, DLH6AN.