sensors Mode-S transponder

3C64AA

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIEJ · AIRBUS A-321neo

Hex
3C64AA
Octal
17062252
Decimal
3,957,930
Country
DE
Tail
D-AIEJ
Type
A21N
No current signal · last broadcast 18h ago
Flights observed
11
Distinct callsigns
7
Country
DE
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 3C64AA.

Country allocation

The ICAO 24-bit address 3C64AA 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 7 distinct

Callsign Airline Flights Last seen
DLH1CP Lufthansa 3 2026-04-13
DLH8EJ - 2 2026-04-13
DLH3XV - 2 2026-04-13
DLH9PK - 1 2026-04-13
DLH98Y - 1 2026-04-12
DLH8LY - 1 2026-04-14
DLH6LK Lufthansa 1 2026-04-14

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 DLH8LY - Apr 14, 09:55 UTCApr 14, 11:05 UTC1h 10m
2026-04-14 DLH6LK FRA → HAM Apr 14, 07:00 UTCApr 14, 07:10 UTC10m
2026-04-13 DLH9PK HEL → MUC Apr 13, 16:55 UTCApr 13, 19:05 UTC2h 10m
2026-04-13 DLH3XV - Apr 13, 15:50 UTCApr 13, 15:55 UTC5m
2026-04-13 DLH3XV MUC → HEL Apr 13, 13:40 UTCApr 13, 15:55 UTC2h 15m
2026-04-13 DLH8EJ - Apr 13, 11:55 UTCApr 13, 12:10 UTC15m
2026-04-13 DLH8EJ ATH → MUC Apr 13, 10:00 UTCApr 13, 12:10 UTC2h 10m
2026-04-13 DLH1CP FRA → POZ Apr 13, 08:20 UTCApr 13, 08:55 UTC35m
2026-04-13 DLH1CP FRA → POZ Apr 13, 07:55 UTCApr 13, 08:55 UTC1h 0m
2026-04-13 DLH1CP FRA → POZ Apr 13, 06:40 UTCApr 13, 08:15 UTC1h 35m
2026-04-12 DLH98Y - Apr 12, 17:35 UTCApr 12, 19:20 UTC1h 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-AIEJ page for operator, model, and routing details .

Mode-S 3C64AA frequently asked

What is Mode-S code 3C64AA?
3C64AA is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIEJ.
Where is Mode-S 3C64AA registered?
Mode-S code 3C64AA is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C64AA broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C64AA, octal 17062252, decimal 3,957,930.
What flights does 3C64AA operate?
Mode-S 3C64AA has broadcast 7 distinct callsigns, including DLH1CP, DLH8EJ, DLH3XV, DLH9PK, DLH98Y.