Apparatus

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sensors Mode-S transponder

3C4AD5

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABVU · BOEING 747-400

Hex
3C4AD5
Octal
17045325
Decimal
3,951,317
Country
DE
Tail
D-ABVU
Type
B744
Broadcasting now · callsign DLH455 · 35,000 ft
Flights observed
106
Distinct callsigns
14
Country
DE
Last broadcast
1h ago

Current position

3C4AD5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C4AD5 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 14 distinct

Callsign Airline Flights Last seen
DLH755 Lufthansa 31 2026-05-16
DLH754 Lufthansa 26 2026-05-16
DLH781 Lufthansa 8 2026-05-22
DLH423 Lufthansa 6 2026-05-26
DLH780 Lufthansa 5 2026-05-21
DLH7K Lufthansa 4 2026-05-26
DLH493 Lufthansa 4 2026-05-21
DLH492 Lufthansa 4 2026-05-20
DLH441 Lufthansa 4 2026-05-28
DLH3CF Lufthansa 4 2026-05-28
DLH780D Lufthansa 3 2026-04-18
DLH455 Lufthansa 3 2026-05-29
DLH454 Lufthansa 3 2026-05-29
DLH781D Lufthansa 1 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 DLH455 SFO → FRA May 29, 22:50 UTCMay 30, 01:15 UTC2h 25m
2026-05-29 DLH454 FRA → SFO May 29, 09:05 UTCMay 29, 20:00 UTC10h 55m
2026-05-28 DLH441 IAH → FRA May 28, 20:45 UTCMay 29, 05:55 UTC9h 10m
2026-05-28 DLH3CF ARN → FRA May 28, 08:35 UTCMay 28, 18:15 UTC9h 40m
2026-05-26 DLH423 BOS → FRA May 26, 23:45 UTCMay 27, 06:29 UTC6h 45m
2026-05-26 DLH7K FRA → BOS May 26, 12:50 UTCMay 26, 20:09 UTC7h 20m
2026-05-25 DLH455 SFO → FRA May 25, 22:25 UTCMay 26, 08:34 UTC10h 10m
2026-05-25 DLH454 FRA → SFO May 25, 09:00 UTCMay 25, 19:54 UTC10h 54m
2026-05-23 DLH455 SFO → FRA May 23, 22:35 UTCMay 24, 08:40 UTC10h 5m
2026-05-23 DLH454 FRA → SFO May 23, 09:05 UTCMay 23, 20:05 UTC11h 0m
2026-05-22 DLH781 SIN → FRA May 22, 16:05 UTCMay 23, 04:35 UTC12h 29m
2026-05-21 DLH780 FRA → SIN May 21, 20:10 UTCMay 22, 07:40 UTC11h 30m
2026-05-21 DLH493 YVR → FRA May 21, 00:25 UTCMay 21, 09:25 UTC9h 0m
2026-05-20 DLH492 FRA → YVR May 20, 12:15 UTCMay 20, 21:25 UTC9h 10m
2026-05-19 DLH441 IAH → FRA May 19, 21:35 UTCMay 20, 06:40 UTC9h 6m
2026-05-19 DLH3CF ARN → FRA May 19, 08:40 UTCMay 19, 18:50 UTC10h 10m
2026-05-18 DLH423 BOS → FRA May 18, 22:20 UTCMay 19, 04:45 UTC6h 25m
2026-05-18 DLH7K FRA → BOS May 18, 12:05 UTCMay 18, 19:15 UTC7h 9m
2026-05-17 DLH493 YVR → FRA May 17, 23:30 UTCMay 18, 08:45 UTC9h 15m
2026-05-17 DLH492 FRA → YVR May 17, 11:45 UTCMay 17, 21:01 UTC9h 15m
2026-05-16 DLH755 BLR → FRA May 16, 23:00 UTCMay 17, 07:05 UTC8h 5m
2026-05-16 DLH755 BLR → FRA May 16, 22:15 UTCMay 16, 22:25 UTC10m
2026-05-16 DLH754 FRA → BLR May 16, 20:00 UTCMay 16, 20:10 UTC10m
2026-05-16 DLH754 FRA → BLR May 16, 11:35 UTCMay 16, 18:35 UTC7h 0m
2026-05-15 DLH755 BLR → FRA May 15, 23:00 UTCMay 16, 07:11 UTC8h 11m
2026-05-15 DLH755 BLR → FRA May 15, 22:10 UTCMay 15, 22:25 UTC15m
2026-05-15 DLH754 FRA → BLR May 15, 11:15 UTCMay 15, 20:00 UTC8h 44m
2026-05-14 DLH755 BLR → FRA May 14, 23:30 UTCMay 15, 07:30 UTC8h 0m
2026-05-14 DLH755 BLR → FRA May 14, 22:15 UTCMay 14, 22:30 UTC15m
2026-05-14 DLH754 FRA → BLR May 14, 19:55 UTCMay 14, 20:05 UTC10m
2026-05-14 DLH754 FRA → BLR May 14, 11:35 UTCMay 14, 18:35 UTC7h 0m
2026-05-13 DLH441 IAH → FRA May 13, 21:05 UTCMay 14, 06:25 UTC9h 20m
2026-05-13 DLH3CF ARN → FRA May 13, 08:25 UTCMay 13, 18:30 UTC10h 5m
2026-05-12 DLH781 SIN → FRA May 12, 16:15 UTCMay 13, 04:45 UTC12h 30m
2026-05-11 DLH780 FRA → SIN May 11, 20:10 UTCMay 12, 08:00 UTC11h 50m
2026-05-11 DLH493 YVR → FRA May 11, 00:10 UTCMay 11, 09:10 UTC9h 0m
2026-05-10 DLH492 FRA → YVR May 10, 12:05 UTCMay 10, 21:49 UTC9h 45m
2026-05-09 DLH755 BLR → FRA May 9, 23:35 UTCMay 10, 07:40 UTC8h 5m
2026-05-09 DLH755 BLR → FRA May 9, 22:15 UTCMay 9, 22:30 UTC15m
2026-05-09 DLH754 FRA → BLR May 9, 11:35 UTCMay 9, 20:05 UTC8h 30m
2026-05-08 DLH755 BLR → FRA May 8, 23:40 UTCMay 9, 07:15 UTC7h 35m
2026-05-08 DLH755 BLR → FRA May 8, 21:55 UTCMay 8, 22:05 UTC10m
2026-05-08 DLH754 FRA → BLR May 8, 11:14 UTCMay 8, 19:35 UTC8h 20m
2026-05-07 DLH441 IAH → FRA May 7, 21:15 UTCMay 8, 06:04 UTC8h 50m
2026-05-07 DLH3CF ARN → FRA May 7, 08:30 UTCMay 7, 18:40 UTC10h 10m
2026-05-04 DLH423 BOS → FRA May 4, 22:15 UTCMay 5, 04:55 UTC6h 40m
2026-05-04 DLH7K FRA → BOS May 4, 11:55 UTCMay 4, 19:15 UTC7h 21m
2026-05-03 DLH755 BLR → FRA May 3, 22:45 UTCMay 4, 07:00 UTC8h 15m
2026-05-03 DLH754 FRA → BLR May 3, 19:40 UTCMay 3, 19:55 UTC15m
2026-05-03 DLH754 FRA → BLR May 3, 11:20 UTCMay 3, 18:14 UTC6h 55m

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

Mode-S 3C4AD5 frequently asked

What is Mode-S code 3C4AD5?
3C4AD5 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABVU.
Where is Mode-S 3C4AD5 registered?
Mode-S code 3C4AD5 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4AD5 broadcasting right now?
Yes. Mode-S 3C4AD5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4AD5, octal 17045325, decimal 3,951,317.
What flights does 3C4AD5 operate?
Mode-S 3C4AD5 has broadcast 14 distinct callsigns, including DLH755, DLH754, DLH781, DLH423, DLH780.