Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3C66A6

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIUF · AIRBUS A-320

Hex
3C66A6
Octal
17063246
Decimal
3,958,438
Country
DE
Tail
D-AIUF
Type
A320
Broadcasting now · callsign DLH3NC · 32,675 ft
Flights observed
414
Distinct callsigns
20
Country
DE
Last broadcast
16d ago

Current position

3C66A6 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C66A6 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
DLH68W - 5 2026-07-18
DLH66J Lufthansa 5 2026-07-26
DLH44U - 5 2026-07-18
DLH36M - 5 2026-07-19
DLH1743 Lufthansa 5 2026-07-25
DLH1742 Lufthansa 5 2026-07-24
DLH09Y Lufthansa 5 2026-07-26
DLH02X - 5 2026-07-19
DLH9VT - 4 2026-07-16
DLH96K - 4 2026-06-24
DLH8CF - 4 2026-07-16
DLH82A - 4 2026-07-23
DLH7E Lufthansa 4 2026-07-26
DLH6AC - 4 2026-07-06
DLH63M - 4 2026-06-24
DLH5JW - 4 2026-07-06
DLH4LY - 4 2026-07-19
DLH4KX Lufthansa 4 2026-07-18
DLH2HL - 4 2026-07-26
DLH1VA - 4 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DLH41U FRA → LIS Jul 26, 19:50 UTCJul 26, 21:30 UTC1h 40m
2026-07-26 DLH7E HAM → MUC Jul 26, 16:45 UTCJul 26, 17:40 UTC55m
2026-07-26 DLH2HL - Jul 26, 14:50 UTCJul 26, 15:50 UTC1h 0m
2026-07-26 DLH66J PMI → MUC Jul 26, 12:00 UTCJul 26, 13:35 UTC1h 35m
2026-07-26 DLH09Y NCE → MUC Jul 26, 08:50 UTCJul 26, 10:25 UTC1h 35m
2026-07-26 DLH97F FRA → PDL Jul 26, 06:10 UTCJul 26, 07:45 UTC1h 36m
2026-07-25 DLH09X MAD → MUC Jul 25, 19:45 UTCJul 25, 21:20 UTC1h 35m
2026-07-25 DLH8AJ FRA → HAM Jul 25, 16:20 UTCJul 25, 18:00 UTC1h 40m
2026-07-25 DLH3YJ - Jul 25, 13:50 UTCJul 25, 15:15 UTC1h 25m
2026-07-25 DLH4PW - Jul 25, 11:45 UTCJul 25, 12:35 UTC50m
2026-07-25 DLH7LL OTP → FRA Jul 25, 09:55 UTCJul 25, 10:40 UTC45m
2026-07-25 DLH7XC NAP → FRA Jul 25, 07:25 UTCJul 25, 08:10 UTC45m
2026-07-25 DLH9PV FRA → LGW Jul 25, 05:50 UTCJul 25, 06:30 UTC40m
2026-07-25 DLH1743 RMO → MUC Jul 25, 01:05 UTCJul 25, 03:25 UTC2h 20m
2026-07-24 DLH1742 MUC → RMO Jul 24, 20:45 UTCJul 24, 22:45 UTC2h 0m
2026-07-24 DLH2KY ZRH → MUC Jul 24, 18:15 UTCJul 24, 18:55 UTC40m
2026-07-24 DLH7AP - Jul 24, 16:55 UTCJul 24, 17:30 UTC35m
2026-07-24 DLH2281 - Jul 24, 13:45 UTCJul 24, 14:55 UTC1h 10m
2026-07-24 DLH2280 - Jul 24, 11:50 UTCJul 24, 12:45 UTC55m
2026-07-24 DLH6AP MUC → BRE Jul 24, 09:40 UTCJul 24, 10:55 UTC1h 15m
2026-07-24 DLH9YP MXP → MUC Jul 24, 06:50 UTCJul 24, 07:45 UTC55m
2026-07-23 DLH03W BIO → MUC Jul 23, 16:50 UTCJul 23, 18:45 UTC1h 55m
2026-07-23 DLH82A - Jul 23, 13:55 UTCJul 23, 15:30 UTC1h 35m
2026-07-23 DLH3LX DUB → MUC Jul 23, 10:05 UTCJul 23, 12:05 UTC2h 0m
2026-07-23 DLH5MM - Jul 23, 06:40 UTCJul 23, 08:40 UTC2h 0m
2026-07-22 DLH6AN BUD → FRA Jul 22, 18:05 UTCJul 22, 18:55 UTC50m
2026-07-22 DLH4HX MUC → HAJ Jul 22, 16:20 UTCJul 22, 17:15 UTC55m
2026-07-22 DLH6KK - Jul 22, 14:10 UTCJul 22, 15:15 UTC1h 5m
2026-07-22 DLH4RX HAM → FRA Jul 22, 11:40 UTCJul 22, 12:45 UTC1h 5m
2026-07-21 DLH09F VIE → MUC Jul 21, 18:55 UTCJul 21, 20:00 UTC1h 5m
2026-07-21 DLH06N - Jul 21, 17:00 UTCJul 21, 18:10 UTC1h 10m
2026-07-21 DLH97J - Jul 21, 12:45 UTCJul 21, 13:55 UTC1h 10m
2026-07-21 DLH66E MUC → BIO Jul 21, 10:00 UTCJul 21, 11:30 UTC1h 30m
2026-07-21 DLH93U NCE → MUC Jul 21, 04:15 UTCJul 21, 05:25 UTC1h 10m
2026-07-20 DLH33P MUC → NCE Jul 20, 20:35 UTCJul 20, 21:45 UTC1h 10m
2026-07-20 DLH8UC ARN → FRA Jul 20, 17:20 UTCJul 20, 19:05 UTC1h 45m
2026-07-20 DLH1EJ - Jul 20, 14:30 UTCJul 20, 16:05 UTC1h 35m
2026-07-20 DLH8EJ ATH → MUC Jul 20, 10:40 UTCJul 20, 12:50 UTC2h 10m
2026-07-20 DLH1CP FRA → POZ Jul 20, 07:00 UTCJul 20, 09:00 UTC2h 0m
2026-07-20 DLH2647 ADB → MUC Jul 20, 00:50 UTCJul 20, 03:15 UTC2h 25m
2026-07-19 DLH2646 MUC → ADB Jul 19, 20:40 UTCJul 19, 22:50 UTC2h 10m
2026-07-19 DLH36M - Jul 19, 16:45 UTCJul 19, 18:40 UTC1h 55m
2026-07-19 DLH02X - Jul 19, 13:20 UTCJul 19, 15:40 UTC2h 20m
2026-07-19 DLH8LY - Jul 19, 10:00 UTCJul 19, 11:45 UTC1h 45m
2026-07-19 DLH6LK FRA → HAM Jul 19, 06:50 UTCJul 19, 08:35 UTC1h 45m
2026-07-19 DLH4LY KRK → MUC Jul 19, 04:15 UTCJul 19, 05:20 UTC1h 5m
2026-07-18 DLH4KX NAP → FRA Jul 18, 20:55 UTCJul 18, 21:50 UTC55m
2026-07-18 DLH1713 - Jul 18, 18:10 UTCJul 18, 19:45 UTC1h 35m
2026-07-18 DLH1712 - Jul 18, 14:50 UTCJul 18, 16:20 UTC1h 30m
2026-07-18 DLH68W - Jul 18, 11:25 UTCJul 18, 12:55 UTC1h 30m

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

Mode-S 3C66A6 frequently asked

What is Mode-S code 3C66A6?
3C66A6 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIUF.
Where is Mode-S 3C66A6 registered?
Mode-S code 3C66A6 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66A6 broadcasting right now?
Yes. Mode-S 3C66A6 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C66A6, octal 17063246, decimal 3,958,438.
What flights does 3C66A6 operate?
Mode-S 3C66A6 has broadcast 20 distinct callsigns, including DLH68W, DLH66J, DLH44U, DLH36M, DLH1743.