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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 Jul 26, 21:00 UTC
Flights observed
550
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 21:00 UTC

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
DLH88H - 4 2026-07-25
DLH77Y - 4 2026-07-12
DLH6UL Lufthansa 4 2026-07-20
DLH6HE - 4 2026-07-20
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
DLH4EF - 4 2026-07-16
DLH44T - 4 2026-07-07
DLH3VL - 4 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DLH898 DUS → STR Jul 26, 19:15 UTCJul 26, 20:55 UTC1h 40m
2026-07-26 DLH6TP MXP → FRA Jul 26, 16:35 UTCJul 26, 17:50 UTC1h 15m
2026-07-26 DLH7MR BUD → FRA Jul 26, 14:10 UTCJul 26, 15:20 UTC1h 10m
2026-07-26 DLH1RF MUC → FRA Jul 26, 10:15 UTCJul 26, 10:50 UTC35m
2026-07-26 DLH4LC FRA → HAM Jul 26, 08:25 UTCJul 26, 09:00 UTC35m
2026-07-25 DLH2F CDG → FRA Jul 25, 16:50 UTCJul 25, 17:40 UTC50m
2026-07-25 DLH88H FRA → CDG Jul 25, 14:55 UTCJul 25, 15:45 UTC50m
2026-07-25 DLH37W NCE → NCE Jul 25, 11:45 UTCJul 25, 13:40 UTC1h 55m
2026-07-25 DLH02F LIS → MUC Jul 25, 08:30 UTCJul 25, 10:35 UTC2h 5m
2026-07-25 DLH243 FCO → FRA Jul 25, 05:10 UTCJul 25, 06:40 UTC1h 30m
2026-07-24 DLH8HX FRA → GOT Jul 24, 19:30 UTCJul 24, 20:55 UTC1h 25m
2026-07-24 DLH119 MUC → FRA Jul 24, 17:40 UTCJul 24, 18:15 UTC35m
2026-07-24 DLH6LF FRA → MUC Jul 24, 15:50 UTCJul 24, 16:20 UTC30m
2026-07-24 DLH2YA - Jul 24, 12:30 UTCJul 24, 13:50 UTC1h 20m
2026-07-24 DLH4YE MUC → PRG Jul 24, 10:10 UTCJul 24, 11:30 UTC1h 20m
2026-07-24 DLH175 BER → FRA Jul 24, 07:50 UTCJul 24, 08:35 UTC45m
2026-07-24 DLH174 FRA → BER Jul 24, 05:50 UTCJul 24, 06:45 UTC55m
2026-07-21 DLH1101 TLS → FRA Jul 21, 09:35 UTCJul 21, 11:25 UTC1h 50m
2026-07-21 DLH1100 - Jul 21, 06:45 UTCJul 21, 08:15 UTC1h 30m
2026-07-21 DLH7P PRG → FRA Jul 21, 04:20 UTCJul 21, 05:10 UTC50m
2026-07-20 DLH5XY ARN → FRA Jul 20, 20:35 UTCJul 20, 21:15 UTC40m
2026-07-20 DLH6UL HAM → FRA Jul 20, 17:45 UTCJul 20, 19:15 UTC1h 30m
2026-07-20 DLH6HE FRA → BUD Jul 20, 15:15 UTCJul 20, 16:25 UTC1h 10m
2026-07-20 DLH6TN - Jul 20, 12:40 UTCJul 20, 13:55 UTC1h 15m
2026-07-20 DLH5EV - Jul 20, 10:15 UTCJul 20, 11:30 UTC1h 15m
2026-07-20 DLH2VU - Jul 20, 08:05 UTCJul 20, 08:40 UTC35m
2026-07-20 DLH9XK - Jul 20, 06:25 UTCJul 20, 07:05 UTC40m
2026-07-19 DLH3MA ATH → FRA Jul 19, 16:00 UTCJul 19, 18:40 UTC2h 40m
2026-07-19 DLH4LM FRA → ATH Jul 19, 12:30 UTCJul 19, 14:55 UTC2h 25m
2026-07-19 DLH8XA - Jul 19, 09:25 UTCJul 19, 10:00 UTC35m
2026-07-19 DLH9MT FRA → SOF Jul 19, 07:55 UTCJul 19, 08:35 UTC40m
2026-07-19 DLH243 FCO → FRA Jul 19, 05:00 UTCJul 19, 06:30 UTC1h 30m
2026-07-18 DLH8HX FRA → FCO Jul 18, 20:00 UTCJul 18, 21:25 UTC1h 25m
2026-07-18 DLH4P PRG → FRA Jul 18, 10:15 UTCJul 18, 11:00 UTC45m
2026-07-18 DLH6JT FRA → PRG Jul 18, 08:40 UTCJul 18, 09:35 UTC55m
2026-07-18 DLH5A - Jul 18, 06:15 UTCJul 18, 06:55 UTC40m
2026-07-17 DLH2HK FRA → AMS Jul 17, 19:45 UTCJul 17, 20:25 UTC40m
2026-07-17 DLH6YJ MXP → FRA Jul 17, 17:40 UTCJul 17, 18:34 UTC55m
2026-07-17 DLH2FF - Jul 17, 15:05 UTCJul 17, 16:00 UTC55m
2026-07-17 DLH2FF - Jul 17, 14:50 UTCJul 17, 14:55 UTC5m
2026-07-17 DLH37W - Jul 17, 11:39 UTCJul 17, 13:35 UTC1h 55m
2026-07-17 DLH02F FRA → MAD Jul 17, 08:10 UTCJul 17, 10:20 UTC2h 10m
2026-07-16 DLH6UL BUD → FRA Jul 16, 18:10 UTCJul 16, 19:30 UTC1h 20m
2026-07-16 DLH6HE FRA → BUD Jul 16, 15:49 UTCJul 16, 17:00 UTC1h 10m
2026-07-16 DLH6KA BUD → FRA Jul 16, 12:55 UTCJul 16, 14:20 UTC1h 25m
2026-07-16 DLH3UX FRA → BUD Jul 16, 10:40 UTCJul 16, 11:50 UTC1h 10m
2026-07-16 DLH007 HAM → FRA Jul 16, 08:20 UTCJul 16, 09:15 UTC55m
2026-07-16 DLH4EF FRA → HAM Jul 16, 06:15 UTCJul 16, 06:55 UTC40m
2026-07-16 DLH3KV DRS → FRA Jul 16, 04:10 UTCJul 16, 04:55 UTC45m
2026-07-15 DLH2HY - Jul 15, 20:25 UTCJul 15, 21:05 UTC40m

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 Jul 26, 21:00 UTC.
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.