Apparatus

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sensors Mode-S transponder

3C66AE

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIUN · AIRBUS A-320

Hex
3C66AE
Octal
17063256
Decimal
3,958,446
Country
DE
Tail
D-AIUN
Type
A320
No current signal · last broadcast 1h ago
Flights observed
493
Distinct callsigns
20
Country
DE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 3C66AE.

Country allocation

The ICAO 24-bit address 3C66AE 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
DLH9KX - 5 2026-07-01
DLH6HW - 5 2026-07-08
DLH4WU - 5 2026-07-14
DLH2TU - 5 2026-07-08
DLH1LL - 5 2026-07-01
DLH9KY - 4 2026-07-13
DLH9C - 4 2026-06-20
DLH8YJ - 4 2026-07-11
DLH77Y - 4 2026-07-12
DLH5XT Lufthansa 4 2026-06-11
DLH5HR - 4 2026-07-12
DLH5AA - 4 2026-07-11
DLH53E - 4 2026-07-12
DLH52J - 4 2026-07-07
DLH44T - 4 2026-07-07
DLH2NE - 4 2026-07-12
DLH1KJ - 4 2026-06-20
DLH152 Lufthansa 4 2026-06-11
DLH9MF - 3 2026-06-26
DLH9LC Lufthansa 3 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DLH078 - Jul 14, 19:20 UTCJul 14, 19:30 UTC10m
2026-07-14 DLH3VL - Jul 14, 13:55 UTCJul 14, 15:10 UTC1h 15m
2026-07-14 DLH3MW - Jul 14, 10:55 UTCJul 14, 11:55 UTC1h 0m
2026-07-14 DLH6YY - Jul 14, 09:10 UTCJul 14, 09:40 UTC30m
2026-07-14 DLH3LF FRA → DUS Jul 14, 07:00 UTCJul 14, 07:40 UTC40m
2026-07-14 DLH4WU - Jul 14, 04:55 UTCJul 14, 05:40 UTC45m
2026-07-14 DLH4WU - Jul 14, 04:30 UTCJul 14, 04:50 UTC20m
2026-07-13 DLH9KY FRA → CPH Jul 13, 20:35 UTCJul 13, 21:35 UTC1h 0m
2026-07-13 DLH9XY - Jul 13, 18:15 UTCJul 13, 19:05 UTC50m
2026-07-13 DLH1KY FRA → BER Jul 13, 16:35 UTCJul 13, 17:15 UTC40m
2026-07-13 DLH6UP ATH → FRA Jul 13, 11:40 UTCJul 13, 14:25 UTC2h 45m
2026-07-13 DLH4PP FRA → ATH Jul 13, 08:05 UTCJul 13, 10:25 UTC2h 20m
2026-07-13 DLH5TT - Jul 13, 05:05 UTCJul 13, 06:15 UTC1h 10m
2026-07-12 DLH958 FRA → BHX Jul 12, 19:15 UTCJul 12, 20:30 UTC1h 15m
2026-07-12 DLH195 BER → FRA Jul 12, 17:15 UTCJul 12, 18:05 UTC50m
2026-07-12 DLH2NE - Jul 12, 11:05 UTCJul 12, 11:50 UTC45m
2026-07-12 DLH77Y - Jul 12, 08:25 UTCJul 12, 09:35 UTC1h 10m
2026-07-12 DLH53E FRA → NCE Jul 12, 06:10 UTCJul 12, 07:20 UTC1h 10m
2026-07-12 DLH5HR NUE → FRA Jul 12, 04:25 UTCJul 12, 04:55 UTC30m
2026-07-11 DLH8YJ FRA → NUE Jul 11, 20:50 UTCJul 11, 21:15 UTC25m
2026-07-11 DLH5AA - Jul 11, 17:20 UTCJul 11, 18:50 UTC1h 30m
2026-07-11 DLH7KH - Jul 11, 14:45 UTCJul 11, 16:05 UTC1h 20m
2026-07-11 DLH6HH - Jul 11, 12:10 UTCJul 11, 13:15 UTC1h 5m
2026-07-11 DLH2LN - Jul 11, 10:10 UTCJul 11, 11:05 UTC55m
2026-07-11 DLH6P PRG → FRA Jul 11, 07:15 UTCJul 11, 08:05 UTC50m
2026-07-11 DLH8RX FRA → PRG Jul 11, 05:35 UTCJul 11, 06:20 UTC45m
2026-07-10 DLH6MM BER → FRA Jul 10, 13:45 UTCJul 10, 14:30 UTC45m
2026-07-10 DLH2NE FRA → BER Jul 10, 11:50 UTCJul 10, 12:35 UTC45m
2026-07-10 DLH77Y NCE → FRA Jul 10, 09:10 UTCJul 10, 10:25 UTC1h 15m
2026-07-10 DLH53E FRA → NCE Jul 10, 07:05 UTCJul 10, 08:10 UTC1h 5m
2026-07-09 DLH3HT CPH → FRA Jul 9, 18:00 UTCJul 9, 19:00 UTC1h 0m
2026-07-09 DLH830 FRA → CPH Jul 9, 15:35 UTCJul 9, 16:35 UTC1h 0m
2026-07-09 DLH5P PRG → FRA Jul 9, 13:30 UTCJul 9, 14:15 UTC45m
2026-07-09 DLH2RW FRA → PRG Jul 9, 11:50 UTCJul 9, 12:30 UTC40m
2026-07-09 DLH2J - Jul 9, 09:35 UTCJul 9, 10:15 UTC40m
2026-07-09 DLH63K FRA → CDG Jul 9, 06:45 UTCJul 9, 07:35 UTC50m
2026-07-09 DLH7P - Jul 9, 04:10 UTCJul 9, 04:50 UTC40m
2026-07-08 DLH5XY FRA → PRG Jul 8, 20:45 UTCJul 8, 21:25 UTC40m
2026-07-08 DLH8VY - Jul 8, 17:40 UTCJul 8, 18:45 UTC1h 5m
2026-07-08 DLH1LA - Jul 8, 15:10 UTCJul 8, 16:40 UTC1h 30m
2026-07-08 DLH2TU KRK → FRA Jul 8, 12:50 UTCJul 8, 14:05 UTC1h 15m
2026-07-08 DLH6HW FRA → KRK Jul 8, 10:40 UTCJul 8, 11:50 UTC1h 10m
2026-07-08 DLH36N - Jul 8, 08:30 UTCJul 8, 09:20 UTC50m
2026-07-08 DLH37T FRA → SZG Jul 8, 06:55 UTCJul 8, 07:30 UTC35m
2026-07-08 DLH4XV DUS → FRA Jul 8, 04:15 UTCJul 8, 04:45 UTC30m
2026-07-07 DLH078 - Jul 7, 19:15 UTCJul 7, 19:45 UTC30m
2026-07-07 DLH3FT - Jul 7, 17:10 UTCJul 7, 17:45 UTC35m
2026-07-07 DLH8NK FRA → MUC Jul 7, 15:30 UTCJul 7, 16:10 UTC40m
2026-07-07 DLH52J NCE → FRA Jul 7, 13:00 UTCJul 7, 14:15 UTC1h 15m
2026-07-07 DLH44T FRA → NCE Jul 7, 10:35 UTCJul 7, 11:50 UTC1h 15m

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

Mode-S 3C66AE frequently asked

What is Mode-S code 3C66AE?
3C66AE is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIUN.
Where is Mode-S 3C66AE registered?
Mode-S code 3C66AE is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66AE broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C66AE, octal 17063256, decimal 3,958,446.
What flights does 3C66AE operate?
Mode-S 3C66AE has broadcast 20 distinct callsigns, including DLH9KX, DLH6HW, DLH4WU, DLH2TU, DLH1LL.