Apparatus

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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 6h ago
Flights observed
254
Distinct callsigns
20
Country
DE
Last broadcast
6h 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
DLH9MC Lufthansa 4 2026-05-25
DLH68W Lufthansa 4 2026-05-21
DLH44U Lufthansa 4 2026-05-21
DLH1MA Lufthansa 4 2026-05-26
DLH9XC Lufthansa 3 2026-05-19
DLH99P Lufthansa 3 2026-05-20
DLH8PN Lufthansa 3 2026-04-29
DLH8LY Lufthansa 3 2026-05-29
DLH7KJ Lufthansa 3 2026-05-29
DLH6LK Lufthansa 3 2026-05-29
DLH6CJ Lufthansa 3 2026-05-19
DLH66J Lufthansa 3 2026-05-20
DLH4YA Lufthansa 3 2026-06-02
DLH4NV Lufthansa 3 2026-05-18
DLH3FU Lufthansa 3 2026-05-18
DLH3EM Lufthansa 3 2026-05-30
DLH1MF Lufthansa 3 2026-06-02
DLH09Y Lufthansa 3 2026-05-20
DLH02P Lufthansa 3 2026-05-19
DLH9XV Lufthansa 2 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 DLH1MF DUS → MUC Jun 2, 16:55 UTCJun 2, 18:50 UTC1h 55m
2026-06-02 DLH4YA HAM → FRA Jun 2, 14:45 UTCJun 2, 15:40 UTC55m
2026-06-02 DLH97J FRA → MAD Jun 2, 12:30 UTCJun 2, 13:45 UTC1h 15m
2026-06-02 DLH66E MUC → BIO Jun 2, 09:40 UTCJun 2, 11:00 UTC1h 20m
2026-06-02 DLH7HP HAM → FRA Jun 2, 07:00 UTCJun 2, 08:20 UTC1h 20m
2026-06-02 DLH6VT MUC → CPH Jun 2, 04:25 UTCJun 2, 05:40 UTC1h 15m
2026-06-01 DLH09F VIE → MUC Jun 1, 19:20 UTCJun 1, 20:20 UTC1h 0m
2026-06-01 DLH06N FRA → GRZ Jun 1, 16:55 UTCJun 1, 18:10 UTC1h 15m
2026-06-01 DLH7HF BRE → MUC Jun 1, 14:45 UTCJun 1, 15:35 UTC50m
2026-06-01 DLH7KX - Jun 1, 13:05 UTCJun 1, 14:00 UTC55m
2026-06-01 DLH29Y FRA → OPO Jun 1, 10:25 UTCJun 1, 11:35 UTC1h 10m
2026-06-01 DLH07T FRA → SZG Jun 1, 07:50 UTCJun 1, 09:05 UTC1h 15m
2026-06-01 DLH5HV FRA → HAM Jun 1, 05:40 UTCJun 1, 06:30 UTC50m
2026-05-31 DLH3LR FRA → HEL May 31, 20:15 UTCMay 31, 21:05 UTC50m
2026-05-31 DLH1ME ZAG → MUC May 31, 13:55 UTCMay 31, 14:40 UTC45m
2026-05-31 DLH1PJ GDN → FRA May 31, 09:45 UTCMay 31, 10:30 UTC45m
2026-05-31 DLH2LX HAJ → FRA May 31, 08:25 UTCMay 31, 08:30 UTC5m
2026-05-30 DLH1745 TUN → MUC May 30, 13:50 UTCMay 30, 18:40 UTC4h 50m
2026-05-30 DLH57P MAD → MUC May 30, 10:20 UTCMay 30, 12:30 UTC2h 10m
2026-05-30 DLH95N FRA → BCN May 30, 06:55 UTCMay 30, 09:00 UTC2h 5m
2026-05-30 DLH3EM LEJ → FRA May 30, 04:20 UTCMay 30, 05:20 UTC1h 0m
2026-05-29 DLH7KJ HAM → FRA May 29, 20:00 UTCMay 29, 21:10 UTC1h 10m
2026-05-29 DLH69H FRA → MRS May 29, 16:40 UTCMay 29, 18:50 UTC2h 10m
2026-05-29 DLH05Y CDG → MUC May 29, 13:05 UTCMay 29, 15:05 UTC2h 0m
2026-05-29 DLH8LY FRA → DUB May 29, 09:55 UTCMay 29, 11:45 UTC1h 50m
2026-05-29 DLH6LK FRA → HAM May 29, 07:00 UTCMay 29, 08:55 UTC1h 55m
2026-05-29 DLH3EM LEJ → FRA May 29, 04:35 UTCMay 29, 05:30 UTC55m
2026-05-28 DLH7KJ HAM → FRA May 28, 19:55 UTCMay 28, 20:50 UTC55m
2026-05-28 DLH05U CDG → MUC May 28, 16:55 UTCMay 28, 18:30 UTC1h 35m
2026-05-28 DLH77M FRA → VLC May 28, 14:00 UTCMay 28, 15:40 UTC1h 40m
2026-05-28 DLH1PP OTP → FRA May 28, 11:45 UTCMay 28, 12:50 UTC1h 5m
2026-05-28 DLH6NJ FRA → SJJ May 28, 09:50 UTCMay 28, 10:45 UTC55m
2026-05-28 DLH2PR MUC → TIV May 28, 07:10 UTCMay 28, 08:20 UTC1h 10m
2026-05-28 DLH4AN MUC → BRE May 28, 05:25 UTCMay 28, 06:20 UTC55m
2026-05-27 DLH08X FRA → BCN May 27, 16:30 UTCMay 27, 17:30 UTC1h 0m
2026-05-27 DLH16A MUC → CDG May 27, 14:00 UTCMay 27, 15:20 UTC1h 20m
2026-05-27 DLH1KX HEL → FRA May 27, 10:00 UTCMay 27, 11:25 UTC1h 25m
2026-05-27 DLH6YW FRA → HAM May 27, 07:35 UTCMay 27, 09:05 UTC1h 30m
2026-05-27 DLH6EL FRA → FMO May 27, 04:24 UTCMay 27, 05:14 UTC50m
2026-05-26 DLH4ER MUC → OUL May 26, 18:45 UTCMay 26, 19:25 UTC40m
2026-05-26 DLH57P MAD → MUC May 26, 10:14 UTCMay 26, 12:30 UTC2h 15m
2026-05-26 DLH95N FRA → BCN May 26, 06:39 UTCMay 26, 08:45 UTC2h 5m
2026-05-26 DLH1MA ATH → FRA May 26, 04:10 UTCMay 26, 05:15 UTC1h 5m
2026-05-25 DLH9MC FRA → FCO May 25, 20:30 UTCMay 25, 21:30 UTC1h 0m
2026-05-25 DLH36M OVD → MUC May 25, 17:00 UTCMay 25, 19:05 UTC2h 5m
2026-05-25 DLH02X MUC → MAD May 25, 13:30 UTCMay 25, 15:35 UTC2h 5m
2026-05-25 DLH96K BIO → MUC May 25, 10:15 UTCMay 25, 12:00 UTC1h 45m
2026-05-25 DLH63M FRA → SPC May 25, 07:10 UTCMay 25, 08:45 UTC1h 35m
2026-05-25 DLH7LA STR → MUC May 25, 04:25 UTCMay 25, 05:15 UTC50m
2026-05-24 DLH8NP MUC → DUS May 24, 17:40 UTCMay 24, 18:25 UTC45m

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 6h 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 DLH9MC, DLH68W, DLH44U, DLH1MA, DLH9XC.