Apparatus

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sensors Mode-S transponder

3C66A7

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIUG · AIRBUS A-320

Hex
3C66A7
Octal
17063247
Decimal
3,958,439
Country
DE
Tail
D-AIUG
Type
A320
Broadcasting now · callsign DLH1913 · 10,425 ft
Flights observed
307
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 21:25 UTC

Current position

3C66A7 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C66A7 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
DLH7FM Lufthansa 5 2026-05-14
DLH1JF Lufthansa 5 2026-05-13
DLH8VC - 4 2026-07-20
DLH69H Lufthansa 4 2026-05-10
DLH3CK Lufthansa 4 2026-05-24
DLH2RJ Lufthansa 4 2026-05-24
DLH1LY - 4 2026-07-20
DLH05Y Lufthansa 4 2026-05-10
DLH99H Lufthansa 3 2026-05-12
DLH8PN - 3 2026-07-15
DLH7PW - 3 2026-07-17
DLH7JE - 3 2026-07-20
DLH66J Lufthansa 3 2026-07-23
DLH5UW - 3 2026-07-15
DLH5MA Lufthansa 3 2026-05-18
DLH5KH Lufthansa 3 2026-05-18
DLH4JA Lufthansa 3 2026-05-14
DLH3NC Lufthansa 3 2026-05-14
DLH3EE Lufthansa 3 2026-05-28
DLH2RX - 3 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DLH3LR FRA → HEL Jul 26, 20:15 UTCJul 26, 21:20 UTC1h 5m
2026-07-26 DLH2259 BOD → MUC Jul 26, 17:35 UTCJul 26, 19:10 UTC1h 35m
2026-07-26 DLH2258 MUC → BOD Jul 26, 14:55 UTCJul 26, 16:25 UTC1h 30m
2026-07-26 DLH61A MUC → OPO Jul 26, 10:15 UTCJul 26, 12:55 UTC2h 40m
2026-07-26 DLH38J BCN → FRA Jul 26, 06:40 UTCJul 26, 09:00 UTC2h 20m
2026-07-26 DLH8KY HAM → FRA Jul 26, 04:25 UTCJul 26, 04:55 UTC30m
2026-07-25 DLH6RY FRA → BLL Jul 25, 18:40 UTCJul 25, 19:10 UTC30m
2026-07-25 DLH66Y MUC → BCN Jul 25, 16:05 UTCJul 25, 17:00 UTC55m
2026-07-25 DLH86E - Jul 25, 14:10 UTCJul 25, 15:05 UTC55m
2026-07-25 DLH2573 - Jul 25, 12:15 UTCJul 25, 13:00 UTC45m
2026-07-25 DLH2572 MUC → MPN Jul 25, 10:20 UTCJul 25, 10:55 UTC35m
2026-07-25 DLH1723 PUY → MUC Jul 25, 08:20 UTCJul 25, 09:05 UTC45m
2026-07-25 DLH1722 MUC → PUY Jul 25, 06:40 UTCJul 25, 07:15 UTC35m
2026-07-24 DLH7HV FRA → LHR Jul 24, 18:50 UTCJul 24, 19:40 UTC50m
2026-07-24 DLH9LY - Jul 24, 17:10 UTCJul 24, 18:00 UTC50m
2026-07-24 DLH6LX - Jul 24, 13:20 UTCJul 24, 15:40 UTC2h 20m
2026-07-24 DLH3FP FRA → BHX Jul 24, 09:45 UTCJul 24, 11:40 UTC1h 55m
2026-07-24 DLH2PR - Jul 24, 07:40 UTCJul 24, 08:30 UTC50m
2026-07-24 DLH4AN MUC → BRE Jul 24, 05:25 UTCJul 24, 06:25 UTC1h 0m
2026-07-24 DLH1743 RMO → MUC Jul 24, 00:55 UTCJul 24, 03:10 UTC2h 15m
2026-07-23 DLH1742 MUC → RMO Jul 23, 20:40 UTCJul 23, 22:40 UTC2h 0m
2026-07-23 DLH7E HAM → MUC Jul 23, 16:40 UTCJul 23, 17:35 UTC55m
2026-07-23 DLH2HL - Jul 23, 14:45 UTCJul 23, 15:45 UTC1h 0m
2026-07-23 DLH66J PMI → MUC Jul 23, 11:45 UTCJul 23, 13:25 UTC1h 40m
2026-07-23 DLH09Y - Jul 23, 08:55 UTCJul 23, 10:45 UTC1h 50m
2026-07-23 DLH1VA HAJ → MUC Jul 23, 06:50 UTCJul 23, 07:45 UTC55m
2026-07-23 DLH9TT AOI → MUC Jul 23, 04:55 UTCJul 23, 05:50 UTC55m
2026-07-23 DLH2647 ADB → MUC Jul 23, 00:55 UTCJul 23, 03:20 UTC2h 25m
2026-07-22 DLH2646 MUC → ADB Jul 22, 20:45 UTCJul 22, 22:40 UTC1h 55m
2026-07-22 DLH1687 DEB → MUC Jul 22, 14:50 UTCJul 22, 16:05 UTC1h 15m
2026-07-22 DLH1686 MUC → DEB Jul 22, 12:50 UTCJul 22, 14:00 UTC1h 10m
2026-07-22 DLH6YW CSO → MUC Jul 22, 10:20 UTCJul 22, 11:35 UTC1h 15m
2026-07-22 DLH2FL VCE → FRA Jul 22, 03:10 UTCJul 22, 05:25 UTC2h 15m
2026-07-21 DLH5AE STR → MUC Jul 21, 18:35 UTCJul 21, 20:30 UTC1h 55m
2026-07-21 DLH2YC - Jul 21, 15:35 UTCJul 21, 16:25 UTC50m
2026-07-21 DLH6LN MUC → DUS Jul 21, 13:40 UTCJul 21, 14:40 UTC1h 0m
2026-07-21 DLH65X MUC → OPO Jul 21, 11:30 UTCJul 21, 12:30 UTC1h 0m
2026-07-21 DLH02J FRA → MAD Jul 21, 09:20 UTCJul 21, 10:30 UTC1h 10m
2026-07-21 DLH4HF FRA → MXP Jul 21, 06:45 UTCJul 21, 07:30 UTC45m
2026-07-21 DLH8VV - Jul 21, 04:45 UTCJul 21, 05:30 UTC45m
2026-07-21 DLH1743 - Jul 21, 00:50 UTCJul 21, 03:05 UTC2h 15m
2026-07-20 DLH1742 MUC → RMO Jul 20, 20:45 UTCJul 20, 22:50 UTC2h 5m
2026-07-20 DLH1LY - Jul 20, 16:45 UTCJul 20, 18:30 UTC1h 45m
2026-07-20 DLH8VC MUC → OTP Jul 20, 14:25 UTCJul 20, 15:55 UTC1h 30m
2026-07-20 DLH68W - Jul 20, 11:50 UTCJul 20, 13:10 UTC1h 20m
2026-07-20 DLH44U FRA → VLC Jul 20, 09:05 UTCJul 20, 10:40 UTC1h 35m
2026-07-20 DLH7JE AMS → MUC Jul 20, 06:50 UTCJul 20, 07:55 UTC1h 5m
2026-07-19 DLH2RX - Jul 19, 18:30 UTCJul 19, 19:40 UTC1h 10m
2026-07-19 DLH8WF - Jul 19, 16:15 UTCJul 19, 17:05 UTC50m
2026-07-19 DLH7T - Jul 19, 14:15 UTCJul 19, 15:05 UTC50m

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

Mode-S 3C66A7 frequently asked

What is Mode-S code 3C66A7?
3C66A7 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIUG.
Where is Mode-S 3C66A7 registered?
Mode-S code 3C66A7 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66A7 broadcasting right now?
Yes. Mode-S 3C66A7 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C66A7, octal 17063247, decimal 3,958,439.
What flights does 3C66A7 operate?
Mode-S 3C66A7 has broadcast 20 distinct callsigns, including DLH7FM, DLH1JF, DLH8VC, DLH69H, DLH3CK.