Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3C66C1

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIVA · AIRBUS A-350-900

Hex
3C66C1
Octal
17063301
Decimal
3,958,465
Country
DE
Tail
D-AIVA
Type
A359
No current signal · last broadcast 1h ago
Flights observed
178
Distinct callsigns
12
Country
DE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 3C66C1.

Country allocation

The ICAO 24-bit address 3C66C1 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 12 distinct

Callsign Airline Flights Last seen
DLH494 - 26 2026-07-17
DLH477 - 26 2026-07-16
DLH495 - 25 2026-07-18
DLH4J - 21 2026-07-09
DLH475 - 21 2026-07-10
DLH476 - 20 2026-07-15
DLH767 - 13 2026-06-26
DLH766 Lufthansa 13 2026-06-26
DLH428 - 6 2026-07-18
DLH4W - 5 2026-07-14
DLH489 - 1 2026-06-25
DLH488 - 1 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 DLH428 - Jul 18, 11:45 UTCJul 18, 14:00 UTC2h 15m
2026-07-18 DLH495 YYZ → MUC Jul 18, 00:45 UTCJul 18, 08:05 UTC7h 21m
2026-07-17 DLH494 - Jul 17, 14:35 UTCJul 17, 22:29 UTC7h 55m
2026-07-17 DLH495 - Jul 17, 00:35 UTCJul 17, 08:00 UTC7h 25m
2026-07-16 DLH494 - Jul 16, 14:25 UTCJul 16, 22:15 UTC7h 50m
2026-07-16 DLH477 - Jul 16, 01:55 UTCJul 16, 11:15 UTC9h 20m
2026-07-15 DLH476 - Jul 15, 14:15 UTCJul 15, 23:50 UTC9h 35m
2026-07-14 DLH4W - Jul 14, 23:05 UTCJul 15, 07:25 UTC8h 20m
2026-07-14 DLH428 - Jul 14, 11:30 UTCJul 14, 20:25 UTC8h 55m
2026-07-13 DLH4W - Jul 13, 23:20 UTCJul 14, 07:25 UTC8h 5m
2026-07-13 DLH428 - Jul 13, 11:25 UTCJul 13, 20:30 UTC9h 5m
2026-07-13 DLH495 YYZ → MUC Jul 13, 00:40 UTCJul 13, 08:05 UTC7h 25m
2026-07-12 DLH494 MUC → YYZ Jul 12, 14:15 UTCJul 12, 22:05 UTC7h 50m
2026-07-10 DLH475 YUL → MUC Jul 10, 01:55 UTCJul 10, 08:35 UTC6h 40m
2026-07-09 DLH4J - Jul 9, 15:10 UTCJul 9, 22:55 UTC7h 45m
2026-07-08 DLH4W - Jul 8, 23:05 UTCJul 9, 07:30 UTC8h 25m
2026-07-08 DLH428 - Jul 8, 11:20 UTCJul 8, 20:20 UTC9h 0m
2026-07-08 DLH475 - Jul 8, 02:00 UTCJul 8, 08:10 UTC6h 10m
2026-07-08 DLH475 - Jul 8, 01:05 UTCJul 8, 01:55 UTC50m
2026-07-07 DLH4J - Jul 7, 15:15 UTCJul 7, 22:30 UTC7h 15m
2026-07-07 DLH495 - Jul 7, 01:35 UTCJul 7, 08:40 UTC7h 5m
2026-07-06 DLH494 - Jul 6, 21:20 UTCJul 6, 22:35 UTC1h 15m
2026-07-06 DLH494 - Jul 6, 14:25 UTCJul 6, 16:55 UTC2h 30m
2026-07-06 DLH495 - Jul 6, 00:50 UTCJul 6, 07:55 UTC7h 5m
2026-07-05 DLH494 - Jul 5, 14:20 UTCJul 5, 22:40 UTC8h 20m
2026-07-05 DLH495 - Jul 5, 00:50 UTCJul 5, 07:55 UTC7h 5m
2026-07-04 DLH494 - Jul 4, 14:25 UTCJul 4, 22:40 UTC8h 15m
2026-07-04 DLH477 - Jul 4, 02:20 UTCJul 4, 11:20 UTC9h 0m
2026-07-03 DLH476 - Jul 3, 14:10 UTCJul 4, 00:05 UTC9h 55m
2026-07-03 DLH475 YUL → MUC Jul 3, 02:20 UTCJul 3, 08:50 UTC6h 30m
2026-07-02 DLH4J MUC → YUL Jul 2, 15:50 UTCJul 2, 23:40 UTC7h 50m
2026-07-02 DLH475 - Jul 2, 02:10 UTCJul 2, 08:45 UTC6h 35m
2026-07-01 DLH4J - Jul 1, 16:00 UTCJul 1, 23:50 UTC7h 50m
2026-07-01 DLH477 - Jul 1, 02:10 UTCJul 1, 11:45 UTC9h 35m
2026-06-30 DLH476 MUC → YVR Jun 30, 14:40 UTCJul 1, 00:05 UTC9h 25m
2026-06-30 DLH495 - Jun 30, 01:04 UTCJun 30, 08:20 UTC7h 16m
2026-06-29 DLH494 - Jun 29, 14:25 UTCJun 29, 22:15 UTC7h 50m
2026-06-29 DLH495 - Jun 29, 01:00 UTCJun 29, 08:24 UTC7h 25m
2026-06-28 DLH494 - Jun 28, 14:45 UTCJun 28, 22:24 UTC7h 40m
2026-06-28 DLH495 - Jun 28, 01:34 UTCJun 28, 08:50 UTC7h 15m
2026-06-27 DLH494 MUC → YYZ Jun 27, 15:14 UTCJun 27, 23:10 UTC7h 55m
2026-06-26 DLH767 - Jun 26, 20:34 UTCJun 27, 04:49 UTC8h 15m
2026-06-26 DLH766 MUC → BOM Jun 26, 10:55 UTCJun 26, 18:20 UTC7h 25m
2026-06-26 DLH475 YUL → MUC Jun 26, 01:29 UTCJun 26, 08:05 UTC6h 35m
2026-06-25 DLH4J MUC → YUL Jun 25, 15:34 UTCJun 25, 23:09 UTC7h 35m
2026-06-25 DLH489 SEA → MUC Jun 25, 01:59 UTCJun 25, 11:39 UTC9h 40m
2026-06-24 DLH488 MUC → SEA Jun 24, 13:54 UTCJun 24, 23:34 UTC9h 40m
2026-06-24 DLH475 - Jun 24, 01:14 UTCJun 24, 07:54 UTC6h 40m
2026-06-23 DLH4J - Jun 23, 21:54 UTCJun 23, 22:40 UTC45m
2026-06-23 DLH4J - Jun 23, 15:04 UTCJun 23, 21:49 UTC6h 45m

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

Mode-S 3C66C1 frequently asked

What is Mode-S code 3C66C1?
3C66C1 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIVA.
Where is Mode-S 3C66C1 registered?
Mode-S code 3C66C1 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66C1 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C66C1, octal 17063301, decimal 3,958,465.
What flights does 3C66C1 operate?
Mode-S 3C66C1 has broadcast 12 distinct callsigns, including DLH494, DLH477, DLH495, DLH4J, DLH475.