Apparatus

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sensors Mode-S transponder

3C4B29

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABYI · BOEING 747-8

Hex
3C4B29
Octal
17045451
Decimal
3,951,401
Country
DE
Tail
D-ABYI
Type
B748
No current signal · last broadcast 2d ago
Flights observed
67
Distinct callsigns
20
Country
DE
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 3C4B29.

Country allocation

The ICAO 24-bit address 3C4B29 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
DLH573 Lufthansa 6 2026-06-25
DLH572 - 6 2026-06-24
DLH403 - 5 2026-07-08
DLH402 - 5 2026-07-08
DLH507 - 4 2026-07-07
DLH506 Lufthansa 4 2026-07-06
DLH457 - 4 2026-06-20
DLH456 Lufthansa 4 2026-06-20
DLH463 - 3 2026-07-05
DLH462 Lufthansa 3 2026-07-05
DLH455 - 3 2026-07-03
DLH454 Lufthansa 3 2026-07-03
DLH431 - 3 2026-07-11
DLH430 - 2 2026-07-10
DLH419 - 2 2026-06-27
DLH3W - 2 2026-06-27
DLH9917 Lufthansa 1 2026-05-26
DLH9910 - 1 2026-07-11
DLH7K Lufthansa 1 2026-05-29
DLH781 Lufthansa 1 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 DLH9910 - Jul 11, 09:55 UTCJul 11, 19:05 UTC9h 10m
2026-07-11 DLH431 - Jul 11, 03:35 UTCJul 11, 05:25 UTC1h 50m
2026-07-10 DLH431 - Jul 10, 22:00 UTCJul 11, 00:10 UTC2h 10m
2026-07-10 DLH430 FRA → ORD Jul 10, 09:15 UTCJul 10, 17:55 UTC8h 40m
2026-07-08 DLH403 EWR → FRA Jul 8, 22:40 UTCJul 9, 05:30 UTC6h 50m
2026-07-08 DLH402 FRA → EWR Jul 8, 11:55 UTCJul 8, 19:35 UTC7h 40m
2026-07-07 DLH507 - Jul 7, 21:25 UTCJul 8, 08:30 UTC11h 5m
2026-07-06 DLH506 FRA → GRU Jul 6, 20:50 UTCJul 7, 07:45 UTC10h 55m
2026-07-05 DLH463 - Jul 5, 22:00 UTCJul 6, 06:05 UTC8h 5m
2026-07-05 DLH462 FRA → MIA Jul 5, 09:20 UTCJul 5, 18:30 UTC9h 10m
2026-07-04 DLH403 EWR → FRA Jul 4, 22:50 UTCJul 5, 05:10 UTC6h 20m
2026-07-04 DLH402 FRA → EWR Jul 4, 12:15 UTCJul 4, 20:05 UTC7h 50m
2026-07-03 DLH455 SFO → FRA Jul 3, 22:15 UTCJul 4, 08:10 UTC9h 55m
2026-07-03 DLH454 FRA → SFO Jul 3, 09:10 UTCJul 3, 19:50 UTC10h 40m
2026-07-02 DLH403 EWR → FRA Jul 2, 23:15 UTCJul 3, 05:45 UTC6h 30m
2026-07-02 DLH402 FRA → EWR Jul 2, 12:35 UTCJul 2, 20:35 UTC8h 0m
2026-07-01 DLH403 - Jul 1, 23:05 UTCJul 2, 05:40 UTC6h 35m
2026-07-01 DLH402 FRA → EWR Jul 1, 12:00 UTCJul 1, 20:00 UTC8h 0m
2026-06-30 DLH507 - Jun 30, 21:35 UTCJul 1, 08:30 UTC10h 55m
2026-06-29 DLH506 FRA → GRU Jun 29, 20:44 UTCJun 30, 08:05 UTC11h 21m
2026-06-28 DLH455 SFO → FRA Jun 28, 22:34 UTCJun 29, 08:29 UTC9h 55m
2026-06-28 DLH454 FRA → SFO Jun 28, 08:55 UTCJun 28, 18:55 UTC10h 0m
2026-06-27 DLH419 IAD → FRA Jun 27, 22:25 UTCJun 28, 05:20 UTC6h 55m
2026-06-27 DLH3W - Jun 27, 11:59 UTCJun 27, 19:55 UTC7h 55m
2026-06-26 DLH403 - Jun 26, 23:04 UTCJun 27, 05:39 UTC6h 35m
2026-06-26 DLH402 FRA → EWR Jun 26, 12:14 UTCJun 26, 20:04 UTC7h 50m
2026-06-25 DLH573 JNB → FRA Jun 25, 17:25 UTCJun 26, 03:20 UTC9h 55m
2026-06-24 DLH572 - Jun 24, 20:49 UTCJun 25, 06:20 UTC9h 30m
2026-06-23 DLH463 - Jun 23, 21:10 UTCJun 24, 05:34 UTC8h 25m
2026-06-23 DLH462 FRA → MIA Jun 23, 09:14 UTCJun 23, 18:34 UTC9h 20m
2026-06-22 DLH573 JNB → FRA Jun 22, 17:29 UTCJun 23, 03:15 UTC9h 45m
2026-06-21 DLH572 - Jun 21, 20:45 UTCJun 22, 06:35 UTC9h 50m
2026-06-20 DLH457 - Jun 20, 22:59 UTCJun 21, 09:04 UTC10h 5m
2026-06-20 DLH456 FRA → LAX Jun 20, 09:49 UTCJun 20, 20:34 UTC10h 45m
2026-06-19 DLH419 IAD → FRA Jun 19, 23:04 UTCJun 20, 05:49 UTC6h 45m
2026-06-19 DLH3W FRA → IAD Jun 19, 12:14 UTCJun 19, 20:34 UTC8h 20m
2026-06-18 DLH781 SIN → FRA Jun 18, 16:25 UTCJun 19, 04:19 UTC11h 54m
2026-06-17 DLH780 FRA → SIN Jun 17, 20:10 UTCJun 18, 07:55 UTC11h 45m
2026-06-17 DLH499 MEX → FRA Jun 17, 02:25 UTCJun 17, 12:15 UTC9h 50m
2026-06-16 DLH498 FRA → MEX Jun 16, 12:14 UTCJun 16, 23:35 UTC11h 21m
2026-06-15 DLH507 - Jun 15, 21:45 UTCJun 16, 08:35 UTC10h 50m
2026-06-14 DLH506 FRA → GRU Jun 14, 20:50 UTCJun 15, 08:10 UTC11h 19m
2026-06-13 DLH457 - Jun 13, 22:35 UTCJun 14, 08:40 UTC10h 6m
2026-06-13 DLH456 FRA → LAX Jun 13, 09:30 UTCJun 13, 20:10 UTC10h 40m
2026-06-12 DLH463 MIA → FRA Jun 12, 21:10 UTCJun 13, 05:40 UTC8h 29m
2026-06-12 DLH462 FRA → MIA Jun 12, 09:25 UTCJun 12, 18:40 UTC9h 15m
2026-06-11 DLH573 JNB → FRA Jun 11, 17:40 UTCJun 12, 03:40 UTC10h 0m
2026-06-10 DLH572 FRA → JNB Jun 10, 20:45 UTCJun 11, 06:20 UTC9h 35m
2026-06-09 DLH507 GRU → FRA Jun 9, 21:45 UTCJun 10, 08:30 UTC10h 45m
2026-06-08 DLH506 FRA → GRU Jun 8, 20:40 UTCJun 9, 08:25 UTC11h 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-ABYI page for operator, model, and routing details .

Mode-S 3C4B29 frequently asked

What is Mode-S code 3C4B29?
3C4B29 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABYI.
Where is Mode-S 3C4B29 registered?
Mode-S code 3C4B29 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4B29 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4B29, octal 17045451, decimal 3,951,401.
What flights does 3C4B29 operate?
Mode-S 3C4B29 has broadcast 20 distinct callsigns, including DLH573, DLH572, DLH403, DLH402, DLH507.