Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3C66AC

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIUL · AIRBUS A-320

Hex
3C66AC
Octal
17063254
Decimal
3,958,444
Country
DE
Tail
D-AIUL
Type
A320
No current signal · last broadcast 5h ago
Flights observed
526
Distinct callsigns
20
Country
DE
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 3C66AC.

Country allocation

The ICAO 24-bit address 3C66AC 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
DLH9XC - 6 2026-07-14
DLH99P - 6 2026-07-04
DLH6CJ - 6 2026-07-14
DLH66J - 6 2026-07-04
DLH5PJ - 6 2026-07-16
DLH1HP - 6 2026-07-17
DLH09Y - 6 2026-07-04
DLH02P - 6 2026-07-03
DLH9MC - 5 2026-07-08
DLH4UV - 5 2026-07-13
DLH2LJ - 5 2026-07-07
DLH2ER - 5 2026-07-07
DLH1MA - 5 2026-07-09
DLH1913 - 5 2026-07-14
DLH97J - 4 2026-07-10
DLH8PF - 4 2026-07-14
DLH8LY Lufthansa 4 2026-06-06
DLH7KJ Lufthansa 4 2026-06-05
DLH6LK Lufthansa 4 2026-06-06
DLH68W Lufthansa 4 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 DLH37N NCE → MUC Jul 17, 19:55 UTCJul 17, 20:55 UTC1h 0m
2026-07-17 DLH44N MUC → NCE Jul 17, 17:35 UTCJul 17, 18:44 UTC1h 10m
2026-07-17 DLH1PX HAJ → MUC Jul 17, 15:35 UTCJul 17, 16:24 UTC50m
2026-07-17 DLH2JV - Jul 17, 13:50 UTCJul 17, 14:35 UTC45m
2026-07-17 DLH4PW - Jul 17, 11:45 UTCJul 17, 12:35 UTC50m
2026-07-17 DLH7LL - Jul 17, 10:00 UTCJul 17, 10:50 UTC50m
2026-07-17 DLH8MX - Jul 17, 07:55 UTCJul 17, 08:45 UTC50m
2026-07-17 DLH7KK - Jul 17, 06:10 UTCJul 17, 07:00 UTC50m
2026-07-17 DLH1HP - Jul 17, 03:30 UTCJul 17, 04:54 UTC1h 25m
2026-07-16 DLH5PJ - Jul 16, 20:25 UTCJul 16, 21:35 UTC1h 10m
2026-07-16 DLH03W - Jul 16, 17:30 UTCJul 16, 18:59 UTC1h 30m
2026-07-16 DLH82A - Jul 16, 13:54 UTCJul 16, 15:45 UTC1h 50m
2026-07-16 DLH96K - Jul 16, 10:10 UTCJul 16, 11:54 UTC1h 45m
2026-07-16 DLH63M - Jul 16, 07:05 UTCJul 16, 08:55 UTC1h 50m
2026-07-16 DLH01J - Jul 16, 04:20 UTCJul 16, 05:35 UTC1h 15m
2026-07-15 DLH92A - Jul 15, 18:50 UTCJul 15, 20:10 UTC1h 20m
2026-07-15 DLH2UT - Jul 15, 12:20 UTCJul 15, 13:35 UTC1h 15m
2026-07-15 DLH1KK - Jul 15, 08:45 UTCJul 15, 09:50 UTC1h 5m
2026-07-15 DLH7JE - Jul 15, 06:30 UTCJul 15, 07:30 UTC1h 0m
2026-07-14 DLH2RX MUC → AMS Jul 14, 18:35 UTCJul 14, 19:50 UTC1h 15m
2026-07-14 DLH6CJ - Jul 14, 15:35 UTCJul 14, 16:55 UTC1h 20m
2026-07-14 DLH9XC - Jul 14, 13:20 UTCJul 14, 14:30 UTC1h 10m
2026-07-14 DLH1913 - Jul 14, 10:20 UTCJul 14, 11:30 UTC1h 10m
2026-07-14 DLH8PF - Jul 14, 07:50 UTCJul 14, 09:00 UTC1h 10m
2026-07-14 DLH5E HAM → MUC Jul 14, 05:20 UTCJul 14, 06:25 UTC1h 5m
2026-07-13 DLH2CL MUC → HAM Jul 13, 18:30 UTCJul 13, 19:35 UTC1h 5m
2026-07-13 DLH6CJ - Jul 13, 15:50 UTCJul 13, 17:10 UTC1h 20m
2026-07-13 DLH9XC - Jul 13, 13:30 UTCJul 13, 14:45 UTC1h 15m
2026-07-13 DLH2MF - Jul 13, 10:30 UTCJul 13, 12:15 UTC1h 45m
2026-07-13 DLH7PW MUC → SOF Jul 13, 07:45 UTCJul 13, 09:30 UTC1h 45m
2026-07-13 DLH4UV - Jul 13, 05:35 UTCJul 13, 06:30 UTC55m
2026-07-12 DLH4T MUC → BER Jul 12, 19:45 UTCJul 12, 20:30 UTC45m
2026-07-12 DLH5YW - Jul 12, 16:50 UTCJul 12, 18:35 UTC1h 45m
2026-07-12 DLH5KX - Jul 12, 14:20 UTCJul 12, 15:40 UTC1h 20m
2026-07-12 DLH1PP KRK → MUC Jul 12, 12:01 UTCJul 12, 13:01 UTC1h 0m
2026-07-12 DLH6NJ MUC → KRK Jul 12, 09:45 UTCJul 12, 10:50 UTC1h 5m
2026-07-12 DLH96V - Jul 12, 06:01 UTCJul 12, 07:35 UTC1h 35m
2026-07-11 DLH24Y MUC → BCN Jul 11, 18:35 UTCJul 11, 20:15 UTC1h 40m
2026-07-11 DLH66Y - Jul 11, 16:35 UTCJul 11, 17:30 UTC55m
2026-07-11 DLH86E - Jul 11, 14:40 UTCJul 11, 15:35 UTC55m
2026-07-11 DLH61A OPO → MUC Jul 11, 10:25 UTCJul 11, 12:55 UTC2h 30m
2026-07-11 DLH38J MUC → OPO Jul 11, 06:45 UTCJul 11, 09:20 UTC2h 35m
2026-07-11 DLH4LY KRK → MUC Jul 11, 04:20 UTCJul 11, 05:20 UTC1h 0m
2026-07-10 DLH4KX MUC → KRK Jul 10, 20:25 UTCJul 10, 21:20 UTC55m
2026-07-10 DLH04J NCE → MUC Jul 10, 17:35 UTCJul 10, 18:40 UTC1h 5m
2026-07-10 DLH99X - Jul 10, 15:20 UTCJul 10, 16:35 UTC1h 15m
2026-07-10 DLH97J - Jul 10, 13:00 UTCJul 10, 14:10 UTC1h 10m
2026-07-10 DLH66E - Jul 10, 10:05 UTCJul 10, 11:25 UTC1h 20m
2026-07-10 DLH7VX PRG → MUC Jul 10, 08:20 UTCJul 10, 09:00 UTC40m
2026-07-10 DLH1YN - Jul 10, 06:50 UTCJul 10, 07:25 UTC35m

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

Mode-S 3C66AC frequently asked

What is Mode-S code 3C66AC?
3C66AC is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIUL.
Where is Mode-S 3C66AC registered?
Mode-S code 3C66AC is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66AC 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 3C66AC, octal 17063254, decimal 3,958,444.
What flights does 3C66AC operate?
Mode-S 3C66AC has broadcast 20 distinct callsigns, including DLH9XC, DLH99P, DLH6CJ, DLH66J, DLH5PJ.