Apparatus

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sensors Mode-S transponder

3C4B35

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABYU · BOEING 747-8

Hex
3C4B35
Octal
17045465
Decimal
3,951,413
Country
DE
Tail
D-ABYU
Type
B748
No current signal · last broadcast 3h ago
Flights observed
113
Distinct callsigns
20
Country
DE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3C4B35.

Country allocation

The ICAO 24-bit address 3C4B35 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
DLH510 - 14 2026-07-10
DLH511 - 12 2026-07-10
DLH716 - 11 2026-07-11
DLH717 - 10 2026-07-12
DLH572 Lufthansa 7 2026-07-19
DLH431 - 6 2026-07-14
DLH430 - 6 2026-07-14
DLH573 - 5 2026-07-13
DLH507 Lufthansa 4 2026-07-18
DLH506 - 4 2026-07-17
DLH499 - 4 2026-07-09
DLH498 - 4 2026-07-08
DLH457 - 4 2026-07-06
DLH456 Lufthansa 4 2026-07-06
DLH455 - 3 2026-07-17
DLH454 - 3 2026-07-16
DLH463 Lufthansa 2 2026-05-01
DLH462 Lufthansa 2 2026-05-01
DLH403 - 2 2026-07-05
DLH402 - 2 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 DLH572 FRA → JNB Jul 19, 20:30 UTCJul 20, 06:40 UTC10h 10m
2026-07-18 DLH507 GRU → FRA Jul 18, 21:50 UTCJul 19, 08:25 UTC10h 35m
2026-07-17 DLH506 - Jul 17, 20:50 UTCJul 18, 08:20 UTC11h 31m
2026-07-17 DLH455 SFO → FRA Jul 17, 01:05 UTCJul 17, 10:50 UTC9h 45m
2026-07-16 DLH454 - Jul 16, 11:20 UTCJul 16, 22:15 UTC10h 55m
2026-07-14 DLH431 ORD → FRA Jul 14, 22:20 UTCJul 15, 06:00 UTC7h 39m
2026-07-14 DLH430 FRA → ORD Jul 14, 09:30 UTCJul 14, 17:40 UTC8h 10m
2026-07-13 DLH573 - Jul 13, 17:45 UTCJul 14, 03:45 UTC10h 0m
2026-07-13 DLH572 - Jul 13, 08:05 UTCJul 13, 08:35 UTC30m
2026-07-12 DLH572 - Jul 12, 20:30 UTCJul 13, 05:55 UTC9h 25m
2026-07-12 DLH717 HND → FRA Jul 12, 03:10 UTCJul 12, 16:30 UTC13h 20m
2026-07-11 DLH716 FRA → HND Jul 11, 12:45 UTCJul 12, 00:40 UTC11h 55m
2026-07-10 DLH511 - Jul 10, 20:00 UTCJul 11, 08:10 UTC12h 10m
2026-07-10 DLH510 - Jul 10, 08:00 UTCJul 10, 09:55 UTC1h 55m
2026-07-09 DLH510 - Jul 9, 20:40 UTCJul 10, 07:55 UTC11h 15m
2026-07-09 DLH499 - Jul 9, 02:50 UTCJul 9, 13:05 UTC10h 15m
2026-07-08 DLH498 - Jul 8, 12:30 UTCJul 8, 23:40 UTC11h 10m
2026-07-06 DLH457 - Jul 6, 22:55 UTCJul 7, 08:40 UTC9h 45m
2026-07-06 DLH456 FRA → LAX Jul 6, 09:25 UTCJul 6, 20:30 UTC11h 5m
2026-07-05 DLH403 - Jul 5, 22:45 UTCJul 6, 05:10 UTC6h 25m
2026-07-05 DLH402 FRA → EWR Jul 5, 11:55 UTCJul 5, 19:45 UTC7h 50m
2026-07-04 DLH455 SFO → FRA Jul 4, 22:05 UTCJul 5, 07:55 UTC9h 50m
2026-07-04 DLH454 FRA → SFO Jul 4, 08:55 UTCJul 4, 19:40 UTC10h 45m
2026-07-01 DLH717 HND → FRA Jul 1, 03:25 UTCJul 1, 16:55 UTC13h 30m
2026-06-30 DLH716 FRA → HND Jun 30, 13:05 UTCJul 1, 01:05 UTC12h 0m
2026-06-29 DLH573 JNB → FRA Jun 29, 17:30 UTCJun 30, 03:35 UTC10h 6m
2026-06-28 DLH572 - Jun 28, 20:29 UTCJun 29, 06:09 UTC9h 40m
2026-06-28 DLH717 HND → FRA Jun 28, 03:19 UTCJun 28, 17:04 UTC13h 45m
2026-06-27 DLH716 FRA → HND Jun 27, 13:04 UTCJun 28, 01:04 UTC12h 0m
2026-06-26 DLH511 EZE → FRA Jun 26, 19:50 UTCJun 27, 08:35 UTC12h 45m
2026-06-25 DLH510 FRA → EZE Jun 25, 20:59 UTCJun 26, 09:55 UTC12h 55m
2026-06-25 DLH717 HND → FRA Jun 25, 03:40 UTCJun 25, 17:09 UTC13h 30m
2026-06-24 DLH716 FRA → HND Jun 24, 12:50 UTCJun 25, 00:44 UTC11h 55m
2026-06-23 DLH511 EZE → FRA Jun 23, 19:44 UTCJun 24, 08:35 UTC12h 50m
2026-06-22 DLH510 FRA → EZE Jun 22, 20:24 UTCJun 23, 09:20 UTC12h 55m
2026-06-20 DLH573 JNB → FRA Jun 20, 17:24 UTCJun 21, 03:19 UTC9h 55m
2026-06-19 DLH572 - Jun 19, 20:34 UTCJun 20, 06:14 UTC9h 40m
2026-06-19 DLH717 HND → FRA Jun 19, 03:24 UTCJun 19, 17:04 UTC13h 40m
2026-06-18 DLH716 FRA → HND Jun 18, 12:50 UTCJun 19, 00:55 UTC12h 4m
2026-06-17 DLH431 ORD → FRA Jun 17, 21:50 UTCJun 18, 05:20 UTC7h 30m
2026-06-17 DLH430 FRA → ORD Jun 17, 09:55 UTCJun 17, 18:20 UTC8h 25m
2026-06-16 DLH419 IAD → FRA Jun 16, 22:50 UTCJun 17, 05:40 UTC6h 50m
2026-06-16 DLH3W FRA → IAD Jun 16, 12:05 UTCJun 16, 19:55 UTC7h 51m
2026-06-15 DLH455 SFO → FRA Jun 15, 22:20 UTCJun 16, 08:30 UTC10h 10m
2026-06-15 DLH454 FRA → SFO Jun 15, 09:00 UTCJun 15, 19:20 UTC10h 20m
2026-06-14 DLH431 ORD → FRA Jun 14, 22:00 UTCJun 15, 05:30 UTC7h 29m
2026-06-14 DLH430 FRA → ORD Jun 14, 09:30 UTCJun 14, 18:05 UTC8h 35m
2026-06-13 DLH573 JNB → FRA Jun 13, 17:25 UTCJun 14, 03:20 UTC9h 55m
2026-06-12 DLH572 - Jun 12, 20:40 UTCJun 13, 06:25 UTC9h 44m
2026-06-11 DLH511 EZE → FRA Jun 11, 19:45 UTCJun 12, 08:20 UTC12h 35m

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

Mode-S 3C4B35 frequently asked

What is Mode-S code 3C4B35?
3C4B35 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABYU.
Where is Mode-S 3C4B35 registered?
Mode-S code 3C4B35 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4B35 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4B35, octal 17045465, decimal 3,951,413.
What flights does 3C4B35 operate?
Mode-S 3C4B35 has broadcast 20 distinct callsigns, including DLH510, DLH511, DLH716, DLH717, DLH572.