Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3C66A3

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIUC · AIRBUS A-320

Hex
3C66A3
Octal
17063243
Decimal
3,958,435
Country
DE
Tail
D-AIUC
Type
A320
Broadcasting now · callsign DLH1743 · 37,975 ft
Flights observed
244
Distinct callsigns
20
Country
DE
Last broadcast
3h ago

Current position

3C66A3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C66A3 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
DLH7JT Lufthansa 5 2026-05-30
DLH2JW Lufthansa 5 2026-05-30
DLH9JV Lufthansa 4 2026-06-01
DLH96V Lufthansa 4 2026-05-14
DLH4M Lufthansa 4 2026-05-27
DLH2NH Lufthansa 4 2026-05-27
DLH2LX Lufthansa 4 2026-06-01
DLH2259 Lufthansa 4 2026-05-27
DLH2258 Lufthansa 4 2026-05-27
DLH1PJ Lufthansa 4 2026-05-15
DLH1ME Lufthansa 4 2026-05-15
DLH8NP Lufthansa 3 2026-05-01
DLH82A Lufthansa 3 2026-05-28
DLH6YW Lufthansa 3 2026-05-12
DLH6RM Lufthansa 3 2026-05-27
DLH5YW Lufthansa 3 2026-05-21
DLH5KX Lufthansa 3 2026-05-21
DLH5HV Lufthansa 3 2026-05-22
DLH4UV Lufthansa 3 2026-05-12
DLH4T Lufthansa 3 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 DLH1742 MUC → RMO Jun 2, 21:00 UTCJun 2, 23:00 UTC2h 0m
2026-06-02 DLH8EL FCO → FRA Jun 2, 18:45 UTCJun 2, 19:30 UTC45m
2026-06-02 DLH8PC MUC → CGN Jun 2, 16:25 UTCJun 2, 17:20 UTC55m
2026-06-02 DLH3E HAM → MUC Jun 2, 13:35 UTCJun 2, 14:35 UTC1h 0m
2026-06-02 DLH5LL FRA → TOS Jun 2, 11:35 UTCJun 2, 12:25 UTC50m
2026-06-02 DLH9E HAM → MUC Jun 2, 09:20 UTCJun 2, 10:20 UTC1h 0m
2026-06-02 DLH1MK FRA → BEG Jun 2, 07:05 UTCJun 2, 08:05 UTC1h 0m
2026-06-02 DLH8FN MUC → AMS Jun 2, 04:30 UTCJun 2, 05:25 UTC55m
2026-06-01 DLH2ME MUC → HAM Jun 1, 20:30 UTCJun 1, 21:20 UTC50m
2026-06-01 DLH8PN CPH → FRA Jun 1, 17:05 UTCJun 1, 18:45 UTC1h 40m
2026-06-01 DLH5UW ZAD → MUC Jun 1, 14:10 UTCJun 1, 16:10 UTC2h 0m
2026-06-01 DLH2LJ FRA → BER Jun 1, 12:00 UTCJun 1, 12:50 UTC50m
2026-06-01 DLH2ER ZRH → MUC Jun 1, 09:55 UTCJun 1, 10:45 UTC50m
2026-06-01 DLH2LX HAJ → FRA Jun 1, 07:20 UTCJun 1, 08:40 UTC1h 20m
2026-06-01 DLH9JV FRA → DUS Jun 1, 05:00 UTCJun 1, 06:10 UTC1h 10m
2026-05-31 DLH24T MAD → FRA May 31, 14:55 UTCMay 31, 16:40 UTC1h 45m
2026-05-31 DLH87A MUC → BCN May 31, 11:15 UTCMay 31, 12:50 UTC1h 35m
2026-05-31 DLH4TN SOF → MUC May 31, 08:40 UTCMay 31, 09:45 UTC1h 5m
2026-05-30 DLH3LR FRA → HEL May 30, 19:35 UTCMay 30, 20:30 UTC55m
2026-05-30 DLH7JT FRA → HAJ May 30, 16:10 UTCMay 30, 18:20 UTC2h 10m
2026-05-30 DLH2JW FRA → CPH May 30, 13:15 UTCMay 30, 15:05 UTC1h 50m
2026-05-30 DLH8LY FRA → DUB May 30, 10:00 UTCMay 30, 11:45 UTC1h 45m
2026-05-30 DLH6LK FRA → HAM May 30, 06:50 UTCMay 30, 08:50 UTC2h 0m
2026-05-30 DLH7LA STR → MUC May 30, 04:35 UTCMay 30, 05:30 UTC55m
2026-05-29 DLH3LR FRA → HEL May 29, 19:35 UTCMay 29, 20:35 UTC1h 0m
2026-05-29 DLH7JT FRA → HAJ May 29, 16:00 UTCMay 29, 18:10 UTC2h 10m
2026-05-29 DLH2JW FRA → CPH May 29, 13:10 UTCMay 29, 15:05 UTC1h 55m
2026-05-29 DLH6PL FRA → HAM May 29, 09:50 UTCMay 29, 11:30 UTC1h 40m
2026-05-29 DLH8YH MUC → MAN May 29, 07:00 UTCMay 29, 08:40 UTC1h 40m
2026-05-29 DLH4LY MUC → SUF May 29, 04:10 UTCMay 29, 05:10 UTC1h 0m
2026-05-28 DLH4KX NAP → FRA May 28, 20:20 UTCMay 28, 21:25 UTC1h 5m
2026-05-28 DLH03W BIO → MUC May 28, 17:10 UTCMay 28, 18:55 UTC1h 45m
2026-05-28 DLH82A MUC → BIO May 28, 14:15 UTCMay 28, 15:50 UTC1h 35m
2026-05-28 DLH68W BCN → FRA May 28, 11:45 UTCMay 28, 13:10 UTC1h 25m
2026-05-28 DLH44U FRA → VLC May 28, 09:00 UTCMay 28, 10:30 UTC1h 30m
2026-05-28 DLH1VA HAJ → MUC May 28, 06:35 UTCMay 28, 07:35 UTC1h 0m
2026-05-28 DLH9TT AOI → MUC May 28, 04:55 UTCMay 28, 05:45 UTC50m
2026-05-27 DLH4M MUC → BCN May 27, 18:20 UTCMay 27, 19:15 UTC55m
2026-05-27 DLH2NH NAP → MUC May 27, 16:30 UTCMay 27, 17:30 UTC1h 0m
2026-05-27 DLH6RM FRA → EAP May 27, 14:10 UTCMay 27, 15:25 UTC1h 15m
2026-05-27 DLH1UW FRA → DUB May 27, 11:50 UTCMay 27, 12:50 UTC1h 0m
2026-05-27 DLH2259 BOD → MUC May 27, 09:10 UTCMay 27, 10:45 UTC1h 35m
2026-05-27 DLH2258 MUC → BOD May 27, 06:40 UTCMay 27, 08:05 UTC1h 26m
2026-05-26 DLH09F VIE → MUC May 26, 19:10 UTCMay 26, 20:20 UTC1h 10m
2026-05-26 DLH06N FRA → GRZ May 26, 16:50 UTCMay 26, 18:05 UTC1h 15m
2026-05-26 DLH24T MAD → FRA May 26, 13:50 UTCMay 26, 15:35 UTC1h 45m
2026-05-26 DLH87A MUC → BCN May 26, 10:54 UTCMay 26, 12:40 UTC1h 45m
2026-05-26 DLH1LX SOF → FRA May 26, 03:19 UTCMay 26, 05:10 UTC1h 50m
2026-05-25 DLH2FN CPH → FRA May 25, 20:34 UTCMay 25, 22:15 UTC1h 40m
2026-05-25 DLH4M MUC → BCN May 25, 18:30 UTCMay 25, 19:25 UTC55m

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

Mode-S 3C66A3 frequently asked

What is Mode-S code 3C66A3?
3C66A3 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIUC.
Where is Mode-S 3C66A3 registered?
Mode-S code 3C66A3 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66A3 broadcasting right now?
Yes. Mode-S 3C66A3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C66A3, octal 17063243, decimal 3,958,435.
What flights does 3C66A3 operate?
Mode-S 3C66A3 has broadcast 20 distinct callsigns, including DLH7JT, DLH2JW, DLH9JV, DLH96V, DLH4M.