Apparatus

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sensors Mode-S transponder

3C66AD

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIUM · AIRBUS A-320

Hex
3C66AD
Octal
17063255
Decimal
3,958,445
Country
DE
Tail
D-AIUM
Type
A320
Broadcasting now · callsign DLH4UY · 10,425 ft
Flights observed
524
Distinct callsigns
20
Country
DE
Last broadcast
2h ago

Current position

3C66AD is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C66AD 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
DLH29Y - 7 2026-07-03
DLH07T - 7 2026-07-03
DLH9XC - 6 2026-07-12
DLH8NP - 6 2026-07-09
DLH82A - 6 2026-07-04
DLH6CJ - 6 2026-07-12
DLH03W - 6 2026-07-04
DLH8VC Lufthansa 5 2026-06-16
DLH8AJ Lufthansa 5 2026-06-19
DLH6EL - 5 2026-06-19
DLH5HV - 5 2026-07-10
DLH5E Lufthansa 5 2026-06-13
DLH4ER Lufthansa 5 2026-06-18
DLH1PJ - 5 2026-06-19
DLH1ME - 5 2026-06-19
DLH1LY Lufthansa 5 2026-06-16
DLH9VT - 4 2026-07-12
DLH9LY - 4 2026-06-29
DLH9LV - 4 2026-07-06
DLH9JV Lufthansa 4 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DLH3MM FRA → AMS Jul 14, 13:45 UTCJul 14, 14:20 UTC35m
2026-07-14 DLH4TT WRO → MUC Jul 14, 11:30 UTCJul 14, 12:25 UTC55m
2026-07-14 DLH8AF - Jul 14, 09:45 UTCJul 14, 10:40 UTC55m
2026-07-14 DLH1FN DRS → MUC Jul 14, 07:45 UTCJul 14, 08:25 UTC40m
2026-07-14 DLH3LL - Jul 14, 06:10 UTCJul 14, 06:50 UTC40m
2026-07-13 DLH04J NCE → MUC Jul 13, 16:35 UTCJul 13, 17:30 UTC55m
2026-07-13 DLH99X MUC → NCE Jul 13, 14:15 UTCJul 13, 15:40 UTC1h 25m
2026-07-13 DLH7M - Jul 13, 11:50 UTCJul 13, 12:50 UTC1h 0m
2026-07-13 DLH4JW MUC → HAM Jul 13, 09:50 UTCJul 13, 10:40 UTC50m
2026-07-13 DLH06E LIS → MUC Jul 13, 05:40 UTCJul 13, 08:10 UTC2h 30m
2026-07-12 DLH64P MUC → LIS Jul 12, 18:50 UTCJul 12, 21:55 UTC3h 5m
2026-07-12 DLH6CJ - Jul 12, 15:15 UTCJul 12, 16:35 UTC1h 20m
2026-07-12 DLH9XC - Jul 12, 13:05 UTCJul 12, 14:10 UTC1h 5m
2026-07-12 DLH9VT - Jul 12, 10:15 UTCJul 12, 11:50 UTC1h 35m
2026-07-12 DLH8CF - Jul 12, 07:10 UTCJul 12, 09:00 UTC1h 50m
2026-07-12 DLH01J - Jul 12, 04:25 UTCJul 12, 05:40 UTC1h 15m
2026-07-11 DLH2266 TLS → MRS Jul 11, 21:15 UTCJul 11, 21:55 UTC40m
2026-07-11 DLH92A MUC → TLS Jul 11, 18:15 UTCJul 11, 20:20 UTC2h 5m
2026-07-11 DLH6CJ - Jul 11, 15:25 UTCJul 11, 16:50 UTC1h 25m
2026-07-11 DLH9XC - Jul 11, 13:25 UTCJul 11, 14:30 UTC1h 5m
2026-07-11 DLH9VT - Jul 11, 10:00 UTCJul 11, 11:35 UTC1h 35m
2026-07-11 DLH8CF - Jul 11, 07:20 UTCJul 11, 08:45 UTC1h 25m
2026-07-11 DLH01J - Jul 11, 04:25 UTCJul 11, 05:35 UTC1h 10m
2026-07-10 DLH92A MUC → MRS Jul 10, 18:15 UTCJul 10, 19:40 UTC1h 25m
2026-07-10 DLH9XV - Jul 10, 15:30 UTCJul 10, 16:40 UTC1h 10m
2026-07-10 DLH7YF MUC → WAW Jul 10, 13:00 UTCJul 10, 14:15 UTC1h 15m
2026-07-10 DLH1913 - Jul 10, 10:10 UTCJul 10, 11:25 UTC1h 15m
2026-07-10 DLH8PF - Jul 10, 07:45 UTCJul 10, 09:10 UTC1h 25m
2026-07-10 DLH5HV - Jul 10, 05:45 UTCJul 10, 06:30 UTC45m
2026-07-09 DLH8NP MUC → DUS Jul 9, 17:45 UTCJul 9, 18:40 UTC55m
2026-07-09 DLH9AC DBV → MUC Jul 9, 15:15 UTCJul 9, 16:35 UTC1h 20m
2026-07-09 DLH9WE - Jul 9, 13:20 UTCJul 9, 14:25 UTC1h 5m
2026-07-09 DLH3NC - Jul 9, 10:15 UTCJul 9, 12:10 UTC1h 55m
2026-07-09 DLH4JA - Jul 9, 07:40 UTCJul 9, 09:15 UTC1h 35m
2026-07-08 DLH69H ALC → MUC Jul 8, 16:30 UTCJul 8, 18:40 UTC2h 10m
2026-07-08 DLH05Y - Jul 8, 13:10 UTCJul 8, 15:25 UTC2h 15m
2026-07-08 DLH2259 BOD → MUC Jul 8, 09:15 UTCJul 8, 10:55 UTC1h 40m
2026-07-08 DLH2258 - Jul 8, 06:40 UTCJul 8, 08:00 UTC1h 20m
2026-07-08 DLH7LA DUS → MUC Jul 8, 04:35 UTCJul 8, 05:25 UTC50m
2026-07-07 DLH8NP - Jul 7, 17:55 UTCJul 7, 18:45 UTC50m
2026-07-07 DLH5AH - Jul 7, 15:25 UTCJul 7, 16:25 UTC1h 0m
2026-07-07 DLH6JF - Jul 7, 13:05 UTCJul 7, 14:20 UTC1h 15m
2026-07-07 DLH2013 DUS → MUC Jul 7, 10:45 UTCJul 7, 11:40 UTC55m
2026-07-07 DLH2012 MUC → DUS Jul 7, 08:55 UTCJul 7, 09:50 UTC55m
2026-07-07 DLH4HF - Jul 7, 06:40 UTCJul 7, 07:30 UTC50m
2026-07-07 DLH8VV - Jul 7, 04:45 UTCJul 7, 05:30 UTC45m
2026-07-06 DLH4M - Jul 6, 18:30 UTCJul 6, 19:30 UTC1h 0m
2026-07-06 DLH2NH - Jul 6, 16:25 UTCJul 6, 17:25 UTC1h 0m
2026-07-06 DLH6KK - Jul 6, 14:05 UTCJul 6, 15:00 UTC55m
2026-07-06 DLH4RX - Jul 6, 11:40 UTCJul 6, 12:50 UTC1h 10m

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

Mode-S 3C66AD frequently asked

What is Mode-S code 3C66AD?
3C66AD is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIUM.
Where is Mode-S 3C66AD registered?
Mode-S code 3C66AD is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66AD broadcasting right now?
Yes. Mode-S 3C66AD is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C66AD, octal 17063255, decimal 3,958,445.
What flights does 3C66AD operate?
Mode-S 3C66AD has broadcast 20 distinct callsigns, including DLH29Y, DLH07T, DLH9XC, DLH8NP, DLH82A.