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sensors Mode-S transponder

3C4ACD

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABVM · BOEING 747-400

Hex
3C4ACD
Octal
17045315
Decimal
3,951,309
Country
DE
Tail
D-ABVM
Type
B744
No current signal · last broadcast 2h ago
Flights observed
143
Distinct callsigns
15
Country
DE
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 3C4ACD.

Country allocation

The ICAO 24-bit address 3C4ACD 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 15 distinct

Callsign Airline Flights Last seen
DLH754 - 22 2026-07-17
DLH755 - 17 2026-07-17
DLH493 - 17 2026-07-14
DLH492 - 16 2026-07-14
DLH780 - 14 2026-07-10
DLH781 - 13 2026-07-11
DLH441 - 8 2026-07-16
DLH455 Lufthansa 7 2026-05-15
DLH454 Lufthansa 7 2026-05-15
DLH3CF - 7 2026-07-16
DLH7K - 4 2026-06-22
DLH471 - 4 2026-07-13
DLH470 - 4 2026-07-13
DLH423 - 2 2026-06-22
DLH9913 Lufthansa 1 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 DLH755 - Jul 17, 22:55 UTCJul 18, 00:04 UTC1h 10m
2026-07-17 DLH754 - Jul 17, 20:29 UTCJul 17, 20:40 UTC10m
2026-07-17 DLH754 - Jul 17, 12:10 UTCJul 17, 19:00 UTC6h 50m
2026-07-16 DLH441 - Jul 16, 21:50 UTCJul 17, 06:54 UTC9h 5m
2026-07-16 DLH3CF - Jul 16, 09:25 UTCJul 16, 19:10 UTC9h 45m
2026-07-14 DLH493 - Jul 14, 23:45 UTCJul 15, 08:50 UTC9h 5m
2026-07-14 DLH492 FRA → YVR Jul 14, 12:00 UTCJul 14, 21:25 UTC9h 25m
2026-07-13 DLH471 YYZ → FRA Jul 13, 23:55 UTCJul 14, 07:05 UTC7h 10m
2026-07-13 DLH470 FRA → YYZ Jul 13, 14:10 UTCJul 13, 21:35 UTC7h 25m
2026-07-12 DLH441 - Jul 12, 21:10 UTCJul 13, 06:30 UTC9h 20m
2026-07-12 DLH3CF - Jul 12, 08:25 UTCJul 12, 18:20 UTC9h 55m
2026-07-11 DLH781 - Jul 11, 16:05 UTCJul 12, 04:25 UTC12h 20m
2026-07-10 DLH780 - Jul 10, 20:35 UTCJul 11, 08:05 UTC11h 30m
2026-07-09 DLH471 YYZ → FRA Jul 9, 22:55 UTCJul 10, 05:45 UTC6h 50m
2026-07-09 DLH470 FRA → YYZ Jul 9, 12:25 UTCJul 9, 20:20 UTC7h 55m
2026-07-08 DLH493 - Jul 8, 23:45 UTCJul 9, 08:50 UTC9h 5m
2026-07-08 DLH492 FRA → YVR Jul 8, 11:45 UTCJul 8, 21:15 UTC9h 30m
2026-07-07 DLH441 - Jul 7, 20:55 UTCJul 8, 06:05 UTC9h 10m
2026-07-07 DLH3CF ARN → FRA Jul 7, 08:35 UTCJul 7, 18:30 UTC9h 55m
2026-07-06 DLH781 SIN → FRA Jul 6, 16:05 UTCJul 7, 04:15 UTC12h 10m
2026-07-05 DLH780 FRA → SIN Jul 5, 21:00 UTCJul 6, 08:40 UTC11h 40m
2026-07-04 DLH755 - Jul 4, 21:55 UTCJul 5, 07:10 UTC9h 15m
2026-07-04 DLH754 FRA → BLR Jul 4, 19:35 UTCJul 4, 19:50 UTC15m
2026-07-04 DLH754 FRA → BLR Jul 4, 11:35 UTCJul 4, 18:15 UTC6h 40m
2026-07-03 DLH755 - Jul 3, 22:35 UTCJul 4, 07:05 UTC8h 30m
2026-07-03 DLH754 FRA → BLR Jul 3, 19:25 UTCJul 3, 19:35 UTC10m
2026-07-03 DLH754 FRA → BLR Jul 3, 11:15 UTCJul 3, 18:00 UTC6h 45m
2026-07-02 DLH755 - Jul 2, 21:50 UTCJul 3, 07:00 UTC9h 10m
2026-07-02 DLH754 FRA → BLR Jul 2, 19:35 UTCJul 2, 19:45 UTC10m
2026-07-02 DLH754 FRA → BLR Jul 2, 11:25 UTCJul 2, 18:15 UTC6h 50m
2026-07-02 DLH755 - Jul 2, 01:15 UTCJul 2, 07:05 UTC5h 50m
2026-07-01 DLH755 - Jul 1, 22:00 UTCJul 1, 22:15 UTC15m
2026-07-01 DLH754 FRA → BLR Jul 1, 19:45 UTCJul 1, 19:55 UTC10m
2026-07-01 DLH754 FRA → BLR Jul 1, 11:20 UTCJul 1, 18:20 UTC7h 0m
2026-06-30 DLH781 SIN → FRA Jun 30, 16:10 UTCJul 1, 04:20 UTC12h 10m
2026-06-29 DLH780 FRA → SIN Jun 29, 20:24 UTCJun 30, 08:05 UTC11h 41m
2026-06-28 DLH441 - Jun 28, 21:04 UTCJun 29, 06:05 UTC9h 0m
2026-06-28 DLH3CF ARN → FRA Jun 28, 08:39 UTCJun 28, 18:19 UTC9h 40m
2026-06-25 DLH441 - Jun 25, 21:25 UTCJun 26, 06:19 UTC8h 55m
2026-06-25 DLH3CF ARN → FRA Jun 25, 08:50 UTCJun 25, 18:45 UTC9h 55m
2026-06-24 DLH781 SIN → FRA Jun 24, 16:24 UTCJun 25, 04:35 UTC12h 10m
2026-06-24 DLH780 FRA → SIN Jun 24, 05:20 UTCJun 24, 07:59 UTC2h 40m
2026-06-23 DLH780 FRA → SIN Jun 23, 20:29 UTCJun 24, 05:15 UTC8h 45m
2026-06-22 DLH423 BOS → FRA Jun 22, 23:05 UTCJun 23, 05:04 UTC6h 0m
2026-06-22 DLH7K - Jun 22, 18:44 UTCJun 22, 19:44 UTC1h 0m
2026-06-22 DLH7K - Jun 22, 12:30 UTCJun 22, 18:40 UTC6h 10m
2026-06-21 DLH755 - Jun 21, 22:20 UTCJun 22, 07:19 UTC9h 0m
2026-06-21 DLH754 FRA → BLR Jun 21, 12:04 UTCJun 21, 18:54 UTC6h 50m
2026-06-20 DLH441 - Jun 20, 05:19 UTCJun 20, 07:14 UTC1h 55m
2026-06-19 DLH441 - Jun 19, 22:19 UTCJun 20, 02:00 UTC3h 40m

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

Mode-S 3C4ACD frequently asked

What is Mode-S code 3C4ACD?
3C4ACD is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABVM.
Where is Mode-S 3C4ACD registered?
Mode-S code 3C4ACD is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4ACD broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4ACD, octal 17045315, decimal 3,951,309.
What flights does 3C4ACD operate?
Mode-S 3C4ACD has broadcast 15 distinct callsigns, including DLH754, DLH755, DLH493, DLH492, DLH780.