Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3C66AA

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIUJ · AIRBUS A-320

Hex
3C66AA
Octal
17063252
Decimal
3,958,442
Country
DE
Tail
D-AIUJ
Type
A320
No current signal · last broadcast Jul 26, 19:55 UTC
Flights observed
533
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 19:55 UTC

Last known position

Most recent position reported by Mode-S 3C66AA.

Country allocation

The ICAO 24-bit address 3C66AA 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
DLH9CH Lufthansa 5 2026-06-09
DLH8EM Lufthansa 5 2026-06-17
DLH7MN Lufthansa 5 2026-06-09
DLH7AA Lufthansa 5 2026-06-07
DLH6RK - 5 2026-06-17
DLH6LC - 5 2026-07-22
DLH3CJ Lufthansa 5 2026-06-07
DLH9HC - 4 2026-07-14
DLH9CP - 4 2026-07-16
DLH8VY Lufthansa 4 2026-07-22
DLH8PK - 4 2026-07-16
DLH7YA Lufthansa 4 2026-07-24
DLH7P - 4 2026-07-20
DLH7MR - 4 2026-07-18
DLH7JW Lufthansa 4 2026-07-25
DLH6TP - 4 2026-07-18
DLH6MM - 4 2026-07-24
DLH5YE Lufthansa 4 2026-06-26
DLH5XY Lufthansa 4 2026-07-19
DLH4YF Lufthansa 4 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DLH2LC FRA → GDN Jul 26, 18:20 UTCJul 26, 19:55 UTC1h 35m
2026-07-26 DLH336 FRA → NAP Jul 26, 15:00 UTCJul 26, 16:25 UTC1h 25m
2026-07-26 DLH6KA MUC → BUD Jul 26, 12:25 UTCJul 26, 13:40 UTC1h 15m
2026-07-26 DLH3UX FCO → FRA Jul 26, 10:05 UTCJul 26, 11:20 UTC1h 15m
2026-07-26 DLH175 BER → FRA Jul 26, 07:50 UTCJul 26, 08:40 UTC50m
2026-07-26 DLH174 FRA → BER Jul 26, 06:00 UTCJul 26, 06:55 UTC56m
2026-07-25 DLH955 BHX → FRA Jul 25, 09:55 UTCJul 25, 11:00 UTC1h 5m
2026-07-25 DLH8UL FRA → HAM Jul 25, 07:25 UTCJul 25, 08:40 UTC1h 15m
2026-07-25 DLH7JW BEG → FRA Jul 25, 04:45 UTCJul 25, 06:10 UTC1h 25m
2026-07-24 DLH7YA FRA → BER Jul 24, 20:25 UTCJul 24, 21:40 UTC1h 15m
2026-07-24 DLH3P - Jul 24, 18:15 UTCJul 24, 19:00 UTC45m
2026-07-24 DLH2VV FRA → PRG Jul 24, 15:45 UTCJul 24, 16:25 UTC40m
2026-07-24 DLH6MM - Jul 24, 13:35 UTCJul 24, 14:15 UTC40m
2026-07-24 DLH2NE HAM → FRA Jul 24, 11:40 UTCJul 24, 12:25 UTC45m
2026-07-24 DLH77Y FRA → CDG Jul 24, 08:55 UTCJul 24, 10:15 UTC1h 20m
2026-07-24 DLH53E FRA → NCE Jul 24, 06:20 UTCJul 24, 07:25 UTC1h 5m
2026-07-24 DLH049 HAJ → FRA Jul 24, 04:15 UTCJul 24, 04:45 UTC30m
2026-07-23 DLH048 FRA → HAJ Jul 23, 20:40 UTCJul 23, 21:20 UTC40m
2026-07-23 DLH77W FRA → AGP Jul 23, 17:25 UTCJul 23, 19:10 UTC1h 45m
2026-07-23 DLH54N FRA → BCN Jul 23, 14:20 UTCJul 23, 16:00 UTC1h 40m
2026-07-23 DLH6C ZRH → FRA Jul 23, 12:05 UTCJul 23, 12:45 UTC40m
2026-07-23 DLH1EN EDI → FRA Jul 23, 09:45 UTCJul 23, 10:25 UTC40m
2026-07-23 DLH247 MXP → FRA Jul 23, 07:25 UTCJul 23, 08:25 UTC1h 0m
2026-07-23 DLH4YF DUS → FRA Jul 23, 05:10 UTCJul 23, 06:00 UTC50m
2026-07-22 DLH8VY MXP → MUC Jul 22, 17:40 UTCJul 22, 18:55 UTC1h 15m
2026-07-22 DLH1LA - Jul 22, 15:30 UTCJul 22, 16:45 UTC1h 15m
2026-07-22 DLH6MM BER → FRA Jul 22, 13:10 UTCJul 22, 13:55 UTC45m
2026-07-22 DLH2NE FRA → BER Jul 22, 11:20 UTCJul 22, 12:10 UTC50m
2026-07-22 DLH6LC - Jul 22, 05:20 UTCJul 22, 05:25 UTC5m
2026-07-21 DLH1301 IST → FRA Jul 21, 15:05 UTCJul 21, 17:50 UTC2h 45m
2026-07-21 DLH1300 FRA → IST Jul 21, 11:20 UTCJul 21, 13:40 UTC2h 20m
2026-07-21 DLH3EJ DUB → FRA Jul 21, 08:10 UTCJul 21, 09:45 UTC1h 35m
2026-07-21 DLH6LC FRA → DUB Jul 21, 05:10 UTCJul 21, 06:50 UTC1h 40m
2026-07-20 DLH3FT - Jul 20, 18:05 UTCJul 20, 18:45 UTC40m
2026-07-20 DLH8NK - Jul 20, 16:00 UTCJul 20, 16:30 UTC30m
2026-07-20 DLH839 - Jul 20, 13:20 UTCJul 20, 14:20 UTC1h 0m
2026-07-20 DLH5HC FRA → SJJ Jul 20, 11:20 UTCJul 20, 12:25 UTC1h 5m
2026-07-20 DLH2MM - Jul 20, 08:50 UTCJul 20, 09:55 UTC1h 5m
2026-07-20 DLH3XN FRA → BLQ Jul 20, 06:10 UTCJul 20, 07:20 UTC1h 10m
2026-07-20 DLH7P - Jul 20, 04:05 UTCJul 20, 04:50 UTC45m
2026-07-19 DLH5XY ARN → FRA Jul 19, 20:25 UTCJul 19, 21:10 UTC45m
2026-07-19 DLH279 LIN → FRA Jul 19, 17:55 UTCJul 19, 18:50 UTC55m
2026-07-19 DLH278 FRA → LIN Jul 19, 15:35 UTCJul 19, 16:25 UTC50m
2026-07-19 DLH85K - Jul 19, 12:20 UTCJul 19, 13:55 UTC1h 35m
2026-07-19 DLH53F - Jul 19, 09:25 UTCJul 19, 11:05 UTC1h 40m
2026-07-19 DLH1LL HAM → FRA Jul 19, 07:00 UTCJul 19, 07:50 UTC50m
2026-07-19 DLH9KX FRA → HAM Jul 19, 05:05 UTCJul 19, 05:50 UTC45m
2026-07-18 DLH6TP - Jul 18, 17:15 UTCJul 18, 18:35 UTC1h 20m
2026-07-18 DLH7MR - Jul 18, 14:50 UTCJul 18, 16:00 UTC1h 10m
2026-07-18 DLH891 - Jul 18, 11:40 UTCJul 18, 13:30 UTC1h 50m

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

Mode-S 3C66AA frequently asked

What is Mode-S code 3C66AA?
3C66AA is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIUJ.
Where is Mode-S 3C66AA registered?
Mode-S code 3C66AA is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C66AA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C66AA, octal 17063252, decimal 3,958,442.
What flights does 3C66AA operate?
Mode-S 3C66AA has broadcast 20 distinct callsigns, including DLH9CH, DLH8EM, DLH7MN, DLH7AA, DLH6RK.