Apparatus

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sensors Mode-S transponder

3C66AB

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIUK · AIRBUS A-320

Hex
3C66AB
Octal
17063253
Decimal
3,958,443
Country
DE
Tail
D-AIUK
Type
A320
No current signal · last broadcast 5h ago
Flights observed
535
Distinct callsigns
20
Country
DE
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 3C66AB.

Country allocation

The ICAO 24-bit address 3C66AB 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
DLH68W - 8 2026-07-14
DLH44U - 8 2026-07-14
DLH1913 - 7 2026-07-03
DLH7JE - 6 2026-07-10
DLH6LK Lufthansa 6 2026-06-11
DLH4UV - 6 2026-07-12
DLH2RX - 6 2026-07-09
DLH8PF - 5 2026-07-03
DLH8LY Lufthansa 5 2026-06-11
DLH7YC Lufthansa 5 2026-05-25
DLH6JF Lufthansa 5 2026-06-24
DLH66J - 5 2026-07-07
DLH5AH Lufthansa 5 2026-06-24
DLH4T - 5 2026-07-11
DLH1WR Lufthansa 5 2026-05-24
DLH09Y - 5 2026-07-07
DLH9XC - 4 2026-07-09
DLH8WF - 4 2026-07-14
DLH8NP - 4 2026-07-10
DLH8KM - 4 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 DLH7HV DUS → MUC Jul 17, 19:15 UTCJul 17, 20:10 UTC55m
2026-07-17 DLH9LY - Jul 17, 16:44 UTCJul 17, 17:35 UTC50m
2026-07-17 DLH2281 - Jul 17, 13:40 UTCJul 17, 14:44 UTC1h 5m
2026-07-17 DLH2280 - Jul 17, 11:35 UTCJul 17, 12:35 UTC1h 0m
2026-07-17 DLH6AP - Jul 17, 09:10 UTCJul 17, 10:20 UTC1h 10m
2026-07-17 DLH9YP - Jul 17, 06:40 UTCJul 17, 07:50 UTC1h 10m
2026-07-17 DLH8MC - Jul 17, 04:29 UTCJul 17, 05:35 UTC1h 5m
2026-07-16 DLH2N - Jul 16, 18:10 UTCJul 16, 18:59 UTC50m
2026-07-16 DLH9XV - Jul 16, 15:14 UTCJul 16, 16:25 UTC1h 10m
2026-07-16 DLH7YF - Jul 16, 13:05 UTCJul 16, 14:10 UTC1h 5m
2026-07-16 DLH29Y - Jul 16, 10:35 UTCJul 16, 11:54 UTC1h 20m
2026-07-16 DLH07T - Jul 16, 08:00 UTCJul 16, 09:15 UTC1h 15m
2026-07-16 DLH4CH - Jul 16, 04:15 UTCJul 16, 05:15 UTC1h 0m
2026-07-15 DLH9WA MUC → FMO Jul 15, 20:45 UTCJul 15, 21:40 UTC55m
2026-07-15 DLH1EP DRS → MUC Jul 15, 19:10 UTCJul 15, 19:50 UTC40m
2026-07-15 DLH4UY - Jul 15, 16:45 UTCJul 15, 17:20 UTC35m
2026-07-15 DLH3HW PRG → MUC Jul 15, 14:45 UTCJul 15, 15:20 UTC35m
2026-07-15 DLH3MM FRA → AMS Jul 15, 13:30 UTCJul 15, 14:00 UTC30m
2026-07-15 DLH8KK - Jul 15, 11:15 UTCJul 15, 12:05 UTC50m
2026-07-15 DLH2AW MUC → CGN Jul 15, 09:25 UTCJul 15, 10:20 UTC55m
2026-07-15 DLH96V BCN → MUC Jul 15, 06:30 UTCJul 15, 08:15 UTC1h 45m
2026-07-14 DLH24Y MUC → BCN Jul 14, 19:05 UTCJul 14, 20:45 UTC1h 40m
2026-07-14 DLH8WF - Jul 14, 16:55 UTCJul 14, 17:40 UTC45m
2026-07-14 DLH7T - Jul 14, 15:05 UTCJul 14, 15:50 UTC45m
2026-07-14 DLH68W TLS → MUC Jul 14, 11:20 UTCJul 14, 12:40 UTC1h 20m
2026-07-14 DLH44U MUC → TLS Jul 14, 08:45 UTCJul 14, 10:25 UTC1h 40m
2026-07-14 DLH1VA - Jul 14, 06:45 UTCJul 14, 07:40 UTC55m
2026-07-14 DLH9TT - Jul 14, 04:55 UTCJul 14, 05:45 UTC50m
2026-07-13 DLH09F - Jul 13, 19:35 UTCJul 13, 20:30 UTC55m
2026-07-13 DLH06N MUC → CDG Jul 13, 17:10 UTCJul 13, 18:30 UTC1h 20m
2026-07-13 DLH7HF BRE → MUC Jul 13, 14:55 UTCJul 13, 15:50 UTC55m
2026-07-13 DLH7KX FRA → BER Jul 13, 13:15 UTCJul 13, 14:05 UTC50m
2026-07-13 DLH9VT - Jul 13, 09:55 UTCJul 13, 11:40 UTC1h 45m
2026-07-13 DLH8CF - Jul 13, 07:25 UTCJul 13, 08:50 UTC1h 25m
2026-07-13 DLH4CH FMO → MUC Jul 13, 04:10 UTCJul 13, 05:01 UTC50m
2026-07-12 DLH9WA MUC → FMO Jul 12, 20:05 UTCJul 12, 21:00 UTC55m
2026-07-12 DLH9M - Jul 12, 17:25 UTCJul 12, 18:20 UTC55m
2026-07-12 DLH9KL MUC → HAM Jul 12, 15:30 UTCJul 12, 16:25 UTC55m
2026-07-12 DLH4CF ATH → FRA Jul 12, 11:30 UTCJul 12, 13:50 UTC2h 20m
2026-07-12 DLH4EE MUC → JMK Jul 12, 08:05 UTCJul 12, 10:10 UTC2h 5m
2026-07-12 DLH4UV - Jul 12, 05:30 UTCJul 12, 06:20 UTC50m
2026-07-11 DLH4T MUC → BER Jul 11, 20:10 UTCJul 11, 21:00 UTC50m
2026-07-11 DLH7PF TRD → MUC Jul 11, 16:20 UTCJul 11, 18:35 UTC2h 15m
2026-07-11 DLH4AA - Jul 11, 12:50 UTCJul 11, 15:15 UTC2h 25m
2026-07-11 DLH29Y - Jul 11, 10:10 UTCJul 11, 11:20 UTC1h 10m
2026-07-11 DLH07T MUC → CDG Jul 11, 07:50 UTCJul 11, 09:05 UTC1h 15m
2026-07-11 DLH5HV DUS → MUC Jul 11, 05:40 UTCJul 11, 06:30 UTC50m
2026-07-10 DLH8NP MUC → DUS Jul 10, 17:45 UTCJul 10, 18:35 UTC50m
2026-07-10 DLH3UV - Jul 10, 15:50 UTCJul 10, 16:35 UTC45m
2026-07-10 DLH5NF MUC → FMO Jul 10, 14:10 UTCJul 10, 15:00 UTC50m

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

Mode-S 3C66AB frequently asked

What is Mode-S code 3C66AB?
3C66AB is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIUK.
Where is Mode-S 3C66AB registered?
Mode-S code 3C66AB is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66AB broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C66AB, octal 17063253, decimal 3,958,443.
What flights does 3C66AB operate?
Mode-S 3C66AB has broadcast 20 distinct callsigns, including DLH68W, DLH44U, DLH1913, DLH7JE, DLH6LK.