sensors Mode-S transponder

3C4A12

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABPR · BOEING 787-9 Dreamliner

Hex
3C4A12
Octal
17045022
Decimal
3,951,122
Country
DE
Tail
D-ABPR
Type
B789
No current signal · last broadcast 6h ago
Flights observed
92
Distinct callsigns
16
Country
DE
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 3C4A12.

Country allocation

The ICAO 24-bit address 3C4A12 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 16 distinct

Callsign Airline Flights Last seen
DLH577 Lufthansa 17 2026-05-26
DLH576 Lufthansa 15 2026-05-29
DLH729 Lufthansa 8 2026-05-17
DLH728 Lufthansa 8 2026-05-17
DLH543 Lufthansa 6 2026-05-23
DLH542 Lufthansa 6 2026-05-22
DLH797 Lufthansa 5 2026-05-19
DLH796 Lufthansa 5 2026-05-19
DLH761 Lufthansa 4 2026-05-14
DLH760 Lufthansa 4 2026-05-14
DLH569 Lufthansa 4 2026-05-28
DLH470 Lufthansa 4 2026-05-16
DLH471 Lufthansa 3 2026-05-16
DLH568 Lufthansa 1 2026-05-27
DLH501 Lufthansa 1 2026-05-03
DLH500 Lufthansa 1 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 DLH576 FRA → CPT May 29, 21:00 UTCMay 29, 22:35 UTC1h 35m
2026-05-28 DLH569 LOS → FRA May 28, 10:55 UTCMay 29, 05:10 UTC18h 15m
2026-05-27 DLH568 FRA → SSG May 27, 11:00 UTCMay 28, 05:15 UTC18h 15m
2026-05-26 DLH577 CPT → FRA May 26, 16:20 UTCMay 27, 03:14 UTC10h 55m
2026-05-25 DLH576 FRA → CPT May 25, 20:34 UTCMay 26, 07:15 UTC10h 40m
2026-05-25 DLH577 CPT → FRA May 25, 01:55 UTCMay 25, 03:10 UTC1h 15m
2026-05-24 DLH577 CPT → FRA May 24, 16:05 UTCMay 24, 16:25 UTC20m
2026-05-24 DLH576 FRA → CPT May 24, 07:00 UTCMay 24, 07:30 UTC30m
2026-05-23 DLH576 FRA → CPT May 23, 20:35 UTCMay 23, 22:05 UTC1h 30m
2026-05-23 DLH543 BOG → FRA May 23, 06:40 UTCMay 23, 15:40 UTC9h 0m
2026-05-23 DLH543 BOG → FRA May 23, 05:45 UTCMay 23, 06:00 UTC15m
2026-05-22 DLH542 FRA → BOG May 22, 13:15 UTCMay 23, 00:00 UTC10h 45m
2026-05-21 DLH577 CPT → FRA May 21, 20:00 UTCMay 22, 04:10 UTC8h 10m
2026-05-21 DLH577 CPT → FRA May 21, 17:05 UTCMay 21, 17:25 UTC20m
2026-05-21 DLH576 FRA → CPT May 21, 06:35 UTCMay 21, 07:05 UTC30m
2026-05-20 DLH576 FRA → CPT May 20, 20:35 UTCMay 21, 02:20 UTC5h 45m
2026-05-19 DLH797 HKG → FRA May 19, 19:05 UTCMay 20, 04:20 UTC9h 15m
2026-05-19 DLH797 HKG → FRA May 19, 15:55 UTCMay 19, 16:10 UTC15m
2026-05-19 DLH796 FRA → HKG May 19, 06:55 UTCMay 19, 07:25 UTC30m
2026-05-18 DLH796 FRA → HKG May 18, 20:05 UTCMay 18, 23:55 UTC3h 50m
2026-05-17 DLH729 PVG → FRA May 17, 23:25 UTCMay 18, 16:50 UTC17h 25m
2026-05-17 DLH729 PVG → FRA May 17, 17:10 UTCMay 18, 16:30 UTC23h 20m
2026-05-17 DLH728 FRA → PVG May 17, 14:35 UTCMay 18, 14:00 UTC23h 25m
2026-05-17 DLH728 FRA → PVG May 17, 14:05 UTCMay 18, 05:35 UTC15h 30m
2026-05-16 DLH471 YYZ → FRA May 16, 23:25 UTCMay 17, 06:15 UTC6h 50m
2026-05-16 DLH470 FRA → YYZ May 16, 13:05 UTCMay 16, 20:55 UTC7h 50m
2026-05-14 DLH761 DEL → FRA May 14, 21:50 UTCMay 15, 05:35 UTC7h 45m
2026-05-14 DLH760 FRA → DEL May 14, 12:00 UTCMay 14, 19:15 UTC7h 15m
2026-05-13 DLH761 DEL → FRA May 13, 21:50 UTCMay 14, 05:50 UTC8h 0m
2026-05-13 DLH760 FRA → DEL May 13, 12:00 UTCMay 13, 19:05 UTC7h 5m
2026-05-12 DLH577 CPT → FRA May 12, 21:01 UTCMay 13, 03:15 UTC6h 15m
2026-05-12 DLH577 CPT → FRA May 12, 16:20 UTCMay 12, 16:45 UTC25m
2026-05-12 DLH576 FRA → CPT May 12, 07:15 UTCMay 12, 07:40 UTC25m
2026-05-11 DLH576 FRA → CPT May 11, 20:45 UTCMay 12, 04:15 UTC7h 30m
2026-05-11 DLH729 PVG → FRA May 11, 09:05 UTCMay 11, 16:40 UTC7h 35m
2026-05-10 DLH729 PVG → FRA May 10, 17:30 UTCMay 11, 16:30 UTC23h 0m
2026-05-10 DLH728 FRA → PVG May 10, 14:34 UTCMay 11, 13:35 UTC23h 0m
2026-05-10 DLH728 FRA → PVG May 10, 14:09 UTCMay 11, 12:30 UTC22h 20m
2026-05-09 DLH569 LOS → FRA May 9, 10:35 UTCMay 10, 04:55 UTC18h 20m
2026-05-08 DLH761 DEL → FRA May 8, 21:45 UTCMay 9, 05:50 UTC8h 5m
2026-05-08 DLH760 FRA → DEL May 8, 12:04 UTCMay 8, 19:00 UTC6h 55m
2026-05-07 DLH577 CPT → FRA May 7, 19:40 UTCMay 8, 03:35 UTC7h 55m
2026-05-07 DLH577 CPT → FRA May 7, 16:40 UTCMay 7, 16:55 UTC15m
2026-05-07 DLH576 FRA → CPT May 7, 06:55 UTCMay 7, 07:25 UTC30m
2026-05-06 DLH576 FRA → CPT May 6, 20:40 UTCMay 6, 22:20 UTC1h 40m
2026-05-05 DLH729 PVG → FRA May 5, 23:30 UTCMay 6, 16:30 UTC17h 0m
2026-05-05 DLH729 PVG → FRA May 5, 17:30 UTCMay 6, 16:30 UTC23h 0m
2026-05-05 DLH728 FRA → PVG May 5, 14:35 UTCMay 6, 13:35 UTC23h 0m
2026-05-05 DLH728 FRA → PVG May 5, 14:00 UTCMay 6, 12:30 UTC22h 30m
2026-05-04 DLH471 YYZ → FRA May 4, 22:45 UTCMay 5, 05:55 UTC7h 10m

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

Mode-S 3C4A12 frequently asked

What is Mode-S code 3C4A12?
3C4A12 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABPR.
Where is Mode-S 3C4A12 registered?
Mode-S code 3C4A12 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4A12 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4A12, octal 17045022, decimal 3,951,122.
What flights does 3C4A12 operate?
Mode-S 3C4A12 has broadcast 16 distinct callsigns, including DLH577, DLH576, DLH729, DLH728, DLH543.