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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 4h ago
Flights observed
569
Distinct callsigns
20
Country
DE
Last broadcast
4h 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
DLH9VT - 6 2026-07-04
DLH8CF - 6 2026-07-04
DLH7LA - 6 2026-07-13
DLH4T - 6 2026-07-17
DLH3LR - 6 2026-07-12
DLH99P - 5 2026-07-12
DLH8VC - 5 2026-07-17
DLH7VX - 5 2026-07-03
DLH6NJ - 5 2026-06-30
DLH1YN - 5 2026-07-03
DLH1PP - 5 2026-06-30
DLH1LY - 5 2026-07-17
DLH02P - 5 2026-07-11
DLH8PC - 4 2026-06-20
DLH8NP Lufthansa 4 2026-05-27
DLH8KY Lufthansa 4 2026-06-27
DLH8KM - 4 2026-07-14
DLH8EL - 4 2026-06-20
DLH7JT - 4 2026-07-09
DLH6RY Lufthansa 4 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 DLH4T - Jul 17, 20:35 UTCJul 17, 21:25 UTC50m
2026-07-17 DLH1LY - Jul 17, 17:35 UTCJul 17, 19:20 UTC1h 45m
2026-07-17 DLH8VC - Jul 17, 14:20 UTCJul 17, 15:44 UTC1h 25m
2026-07-17 DLH06H NCE → MUC Jul 17, 11:50 UTCJul 17, 12:55 UTC1h 5m
2026-07-17 DLH99H - Jul 17, 09:25 UTCJul 17, 10:35 UTC1h 10m
2026-07-17 DLH96V BCN → MUC Jul 17, 06:15 UTCJul 17, 07:55 UTC1h 40m
2026-07-16 DLH24Y MUC → BCN Jul 16, 18:29 UTCJul 16, 20:25 UTC1h 55m
2026-07-16 DLH2AF BEG → MUC Jul 16, 15:35 UTCJul 16, 16:44 UTC1h 10m
2026-07-16 DLH2NC - Jul 16, 13:25 UTCJul 16, 14:29 UTC1h 5m
2026-07-16 DLH3NC - Jul 16, 10:04 UTCJul 16, 12:00 UTC1h 55m
2026-07-16 DLH4JA - Jul 16, 07:20 UTCJul 16, 08:50 UTC1h 30m
2026-07-16 DLH09H TLS → MUC Jul 16, 04:25 UTCJul 16, 05:50 UTC1h 25m
2026-07-15 DLH9852 DUS → TLS Jul 15, 19:00 UTCJul 15, 20:45 UTC1h 45m
2026-07-15 DLH9HH FRA → WAW Jul 15, 16:40 UTCJul 15, 17:40 UTC1h 0m
2026-07-15 DLH8JA FRA → EDI Jul 15, 14:15 UTCJul 15, 15:05 UTC50m
2026-07-15 DLH3YK - Jul 15, 12:30 UTCJul 15, 13:25 UTC55m
2026-07-15 DLH2259 BOD → MUC Jul 15, 09:55 UTCJul 15, 11:30 UTC1h 35m
2026-07-15 DLH2258 - Jul 15, 07:00 UTCJul 15, 08:40 UTC1h 40m
2026-07-15 DLH93U NCE → MUC Jul 15, 04:15 UTCJul 15, 05:20 UTC1h 5m
2026-07-14 DLH33P MUC → NCE Jul 14, 21:15 UTCJul 14, 22:30 UTC1h 15m
2026-07-14 DLH8KM - Jul 14, 17:55 UTCJul 14, 19:25 UTC1h 30m
2026-07-14 DLH6RF MUC → BHX Jul 14, 15:05 UTCJul 14, 16:50 UTC1h 45m
2026-07-14 DLH1FF - Jul 14, 12:10 UTCJul 14, 13:00 UTC50m
2026-07-14 DLH3EE - Jul 14, 10:25 UTCJul 14, 11:15 UTC50m
2026-07-14 DLH3M HAM → MUC Jul 14, 08:10 UTCJul 14, 09:10 UTC1h 0m
2026-07-14 DLH3PK MUC → HAM Jul 14, 06:00 UTCJul 14, 07:00 UTC1h 0m
2026-07-13 DLH3KA WRO → FRA Jul 13, 18:55 UTCJul 13, 20:00 UTC1h 5m
2026-07-13 DLH6KH MUC → BRE Jul 13, 17:10 UTCJul 13, 18:10 UTC1h 0m
2026-07-13 DLH4RK FRA → MXP Jul 13, 13:50 UTCJul 13, 15:40 UTC1h 50m
2026-07-13 DLH8UE MUC → OSL Jul 13, 10:45 UTCJul 13, 12:35 UTC1h 50m
2026-07-13 DLH4RV DUS → MUC Jul 13, 08:45 UTCJul 13, 09:35 UTC50m
2026-07-13 DLH2TY MUC → DUS Jul 13, 06:45 UTCJul 13, 07:35 UTC50m
2026-07-13 DLH7LA DUS → MUC Jul 13, 04:40 UTCJul 13, 05:31 UTC50m
2026-07-12 DLH3LR - Jul 12, 19:35 UTCJul 12, 20:25 UTC50m
2026-07-12 DLH4PW - Jul 12, 11:35 UTCJul 12, 12:25 UTC50m
2026-07-12 DLH7LL - Jul 12, 09:45 UTCJul 12, 10:40 UTC55m
2026-07-12 DLH99P - Jul 12, 06:05 UTCJul 12, 07:40 UTC1h 35m
2026-07-11 DLH02P - Jul 11, 19:40 UTCJul 11, 21:30 UTC1h 50m
2026-07-11 DLH66J - Jul 11, 12:00 UTCJul 11, 13:35 UTC1h 35m
2026-07-11 DLH09Y - Jul 11, 08:50 UTCJul 11, 10:35 UTC1h 45m
2026-07-11 DLH99P - Jul 11, 05:31 UTCJul 11, 07:10 UTC1h 40m
2026-07-10 DLH02P - Jul 10, 20:10 UTCJul 10, 22:10 UTC2h 0m
2026-07-10 DLH8KM - Jul 10, 17:25 UTCJul 10, 18:50 UTC1h 25m
2026-07-10 DLH6RF MUC → BHX Jul 10, 14:40 UTCJul 10, 16:20 UTC1h 40m
2026-07-10 DLH8EJ ATH → MUC Jul 10, 10:35 UTCJul 10, 12:45 UTC2h 10m
2026-07-10 DLH1CP MUC → ATH Jul 10, 07:25 UTCJul 10, 09:25 UTC2h 0m
2026-07-10 DLH7FM CPH → MUC Jul 10, 04:20 UTCJul 10, 05:35 UTC1h 15m
2026-07-09 DLH1JF MUC → CPH Jul 9, 20:20 UTCJul 9, 21:40 UTC1h 20m
2026-07-09 DLH03W - Jul 9, 17:05 UTCJul 9, 18:50 UTC1h 45m
2026-07-09 DLH82A - Jul 9, 14:00 UTCJul 9, 15:50 UTC1h 50m

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 4h 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 DLH9VT, DLH8CF, DLH7LA, DLH4T, DLH3LR.