Apparatus

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sensors Mode-S transponder

3C4B27

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABYG · BOEING 747-8

Hex
3C4B27
Octal
17045447
Decimal
3,951,399
Country
DE
Tail
D-ABYG
Type
B748
No current signal · last broadcast 1d ago
Flights observed
121
Distinct callsigns
20
Country
DE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 3C4B27.

Country allocation

The ICAO 24-bit address 3C4B27 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
DLH507 - 17 2026-07-10
DLH506 - 11 2026-07-09
DLH573 Lufthansa 8 2026-07-05
DLH572 - 8 2026-07-04
DLH499 Lufthansa 8 2026-07-04
DLH498 Lufthansa 7 2026-07-03
DLH457 - 7 2026-06-30
DLH456 Lufthansa 7 2026-06-30
DLH430 - 7 2026-07-12
DLH463 - 6 2026-06-28
DLH431 - 6 2026-07-12
DLH462 Lufthansa 5 2026-06-28
DLH403 - 4 2026-07-11
DLH402 - 4 2026-07-11
DLH455 - 3 2026-07-08
DLH454 - 3 2026-07-08
DLH781 Lufthansa 1 2026-05-03
DLH780 Lufthansa 1 2026-05-02
DLH755 Lufthansa 1 2026-05-26
DLH754 Lufthansa 1 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 DLH431 ORD → FRA Jul 12, 21:40 UTCJul 13, 05:25 UTC7h 45m
2026-07-12 DLH430 FRA → ORD Jul 12, 09:15 UTCJul 12, 17:35 UTC8h 20m
2026-07-11 DLH403 EWR → FRA Jul 11, 22:45 UTCJul 12, 05:25 UTC6h 40m
2026-07-11 DLH402 FRA → EWR Jul 11, 11:50 UTCJul 11, 19:35 UTC7h 45m
2026-07-10 DLH507 - Jul 10, 21:35 UTCJul 11, 08:10 UTC10h 35m
2026-07-09 DLH506 FRA → GRU Jul 9, 20:40 UTCJul 10, 07:45 UTC11h 5m
2026-07-08 DLH455 SFO → FRA Jul 8, 22:15 UTCJul 9, 08:15 UTC10h 0m
2026-07-08 DLH454 - Jul 8, 08:55 UTCJul 8, 19:40 UTC10h 45m
2026-07-07 DLH431 - Jul 7, 21:45 UTCJul 8, 05:20 UTC7h 35m
2026-07-07 DLH430 FRA → ORD Jul 7, 17:10 UTCJul 7, 17:55 UTC45m
2026-07-07 DLH430 FRA → ORD Jul 7, 09:40 UTCJul 7, 17:05 UTC7h 25m
2026-07-05 DLH573 JNB → FRA Jul 5, 17:25 UTCJul 6, 03:15 UTC9h 50m
2026-07-04 DLH572 FRA → JNB Jul 4, 20:25 UTCJul 5, 06:10 UTC9h 45m
2026-07-04 DLH499 MEX → FRA Jul 4, 02:45 UTCJul 4, 12:45 UTC10h 0m
2026-07-03 DLH498 FRA → MEX Jul 3, 12:00 UTCJul 3, 23:25 UTC11h 25m
2026-07-02 DLH507 - Jul 2, 21:45 UTCJul 3, 07:45 UTC10h 0m
2026-07-01 DLH506 FRA → GRU Jul 1, 21:00 UTCJul 2, 08:10 UTC11h 10m
2026-06-30 DLH457 - Jun 30, 22:45 UTCJul 1, 08:20 UTC9h 35m
2026-06-30 DLH456 FRA → LAX Jun 30, 09:40 UTCJun 30, 20:15 UTC10h 35m
2026-06-29 DLH419 IAD → FRA Jun 29, 22:39 UTCJun 30, 05:30 UTC6h 51m
2026-06-29 DLH3W FRA → IAD Jun 29, 12:14 UTCJun 29, 20:15 UTC8h 0m
2026-06-28 DLH463 - Jun 28, 21:59 UTCJun 29, 05:50 UTC7h 50m
2026-06-28 DLH462 FRA → MIA Jun 28, 09:39 UTCJun 28, 19:25 UTC9h 45m
2026-06-27 DLH431 ORD → FRA Jun 27, 21:40 UTCJun 28, 05:15 UTC7h 35m
2026-06-27 DLH430 FRA → ORD Jun 27, 10:10 UTCJun 27, 18:20 UTC8h 10m
2026-06-26 DLH573 JNB → FRA Jun 26, 17:15 UTCJun 27, 03:20 UTC10h 5m
2026-06-25 DLH572 - Jun 25, 20:39 UTCJun 26, 06:29 UTC9h 50m
2026-06-24 DLH573 JNB → FRA Jun 24, 17:29 UTCJun 25, 03:29 UTC10h 0m
2026-06-23 DLH572 - Jun 23, 20:34 UTCJun 24, 06:25 UTC9h 50m
2026-06-23 DLH499 MEX → FRA Jun 23, 02:45 UTCJun 23, 12:45 UTC10h 0m
2026-06-22 DLH498 FRA → MEX Jun 22, 12:15 UTCJun 22, 23:35 UTC11h 20m
2026-06-21 DLH507 - Jun 21, 21:34 UTCJun 22, 08:25 UTC10h 50m
2026-06-20 DLH506 FRA → GRU Jun 20, 20:55 UTCJun 21, 07:55 UTC11h 0m
2026-06-19 DLH455 SFO → FRA Jun 19, 22:34 UTCJun 20, 08:34 UTC10h 0m
2026-06-19 DLH454 FRA → SFO Jun 19, 09:09 UTCJun 19, 19:39 UTC10h 30m
2026-06-18 DLH573 JNB → FRA Jun 18, 17:30 UTCJun 19, 03:20 UTC9h 49m
2026-06-17 DLH572 - Jun 17, 20:30 UTCJun 18, 06:05 UTC9h 35m
2026-06-12 DLH499 MEX → FRA Jun 12, 02:30 UTCJun 12, 12:45 UTC10h 15m
2026-06-11 DLH498 FRA → MEX Jun 11, 12:00 UTCJun 11, 23:15 UTC11h 15m
2026-06-10 DLH457 LAX → FRA Jun 10, 22:35 UTCJun 11, 08:25 UTC9h 50m
2026-06-10 DLH456 FRA → LAX Jun 10, 09:15 UTCJun 10, 20:00 UTC10h 45m
2026-06-09 DLH403 EWR → FRA Jun 9, 22:35 UTCJun 10, 05:25 UTC6h 50m
2026-06-09 DLH402 FRA → EWR Jun 9, 12:20 UTCJun 9, 19:50 UTC7h 30m
2026-06-08 DLH455 SFO → FRA Jun 8, 22:35 UTCJun 9, 08:25 UTC9h 50m
2026-06-08 DLH454 FRA → SFO Jun 8, 08:55 UTCJun 8, 19:30 UTC10h 35m
2026-06-05 DLH463 MIA → FRA Jun 5, 03:55 UTCJun 5, 05:20 UTC1h 25m
2026-06-04 DLH463 MIA → FRA Jun 4, 21:15 UTCJun 4, 21:35 UTC20m
2026-06-04 DLH462 FRA → MIA Jun 4, 09:15 UTCJun 4, 18:45 UTC9h 30m
2026-06-03 DLH431 ORD → FRA Jun 3, 22:40 UTCJun 4, 06:05 UTC7h 25m
2026-06-03 DLH430 FRA → ORD Jun 3, 09:40 UTCJun 3, 18:10 UTC8h 30m

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

Mode-S 3C4B27 frequently asked

What is Mode-S code 3C4B27?
3C4B27 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABYG.
Where is Mode-S 3C4B27 registered?
Mode-S code 3C4B27 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4B27 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4B27, octal 17045447, decimal 3,951,399.
What flights does 3C4B27 operate?
Mode-S 3C4B27 has broadcast 20 distinct callsigns, including DLH507, DLH506, DLH573, DLH572, DLH499.