Apparatus

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sensors Mode-S transponder

3C4A8C

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABTL · BOEING 747-400

Hex
3C4A8C
Octal
17045214
Decimal
3,951,244
Country
DE
Tail
D-ABTL
Type
B744
No current signal · last broadcast 2h ago
Flights observed
56
Distinct callsigns
12
Country
DE
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 3C4A8C.

Country allocation

The ICAO 24-bit address 3C4A8C 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 12 distinct

Callsign Airline Flights Last seen
DLH493 Lufthansa 9 2026-05-27
DLH492 Lufthansa 9 2026-05-27
DLH7K Lufthansa 5 2026-05-28
DLH441 Lufthansa 5 2026-05-08
DLH423 Lufthansa 5 2026-05-29
DLH3CF Lufthansa 5 2026-05-08
DLH780 Lufthansa 4 2026-06-02
DLH755 Lufthansa 4 2026-04-15
DLH781 Lufthansa 3 2026-05-05
DLH455 Lufthansa 3 2026-05-21
DLH454 Lufthansa 3 2026-05-21
DLH754 Lufthansa 1 2026-04-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 DLH780 FRA → SIN Jun 2, 20:50 UTCJun 3, 00:30 UTC3h 40m
2026-05-29 DLH423 BOS → FRA May 29, 00:00 UTCMay 29, 06:25 UTC6h 25m
2026-05-28 DLH7K FRA → BOS May 28, 14:00 UTCMay 28, 20:55 UTC6h 55m
2026-05-27 DLH493 YVR → FRA May 27, 23:50 UTCMay 28, 08:55 UTC9h 5m
2026-05-27 DLH492 FRA → YVR May 27, 12:00 UTCMay 27, 21:35 UTC9h 35m
2026-05-27 DLH493 YVR → FRA May 27, 00:14 UTCMay 27, 08:55 UTC8h 41m
2026-05-26 DLH492 FRA → YVR May 26, 12:24 UTCMay 26, 21:55 UTC9h 30m
2026-05-25 DLH493 YVR → FRA May 25, 23:54 UTCMay 26, 08:50 UTC8h 55m
2026-05-25 DLH492 FRA → YVR May 25, 12:05 UTCMay 25, 21:45 UTC9h 40m
2026-05-25 DLH493 YVR → FRA May 25, 02:15 UTCMay 25, 09:00 UTC6h 45m
2026-05-24 DLH492 FRA → YVR May 24, 12:15 UTCMay 24, 21:45 UTC9h 30m
2026-05-23 DLH423 BOS → FRA May 23, 22:40 UTCMay 24, 05:00 UTC6h 20m
2026-05-23 DLH7K FRA → BOS May 23, 12:15 UTCMay 23, 19:40 UTC7h 26m
2026-05-23 DLH493 YVR → FRA May 23, 00:15 UTCMay 23, 09:10 UTC8h 54m
2026-05-22 DLH492 FRA → YVR May 22, 12:30 UTCMay 22, 21:45 UTC9h 15m
2026-05-21 DLH455 SFO → FRA May 21, 22:35 UTCMay 22, 08:40 UTC10h 5m
2026-05-21 DLH454 FRA → SFO May 21, 08:55 UTCMay 21, 20:00 UTC11h 5m
2026-05-10 DLH455 SFO → FRA May 10, 22:35 UTCMay 11, 08:30 UTC9h 55m
2026-05-10 DLH454 FRA → SFO May 10, 08:54 UTCMay 10, 19:54 UTC11h 0m
2026-05-09 DLH423 BOS → FRA May 9, 22:10 UTCMay 10, 04:55 UTC6h 45m
2026-05-09 DLH7K FRA → BOS May 9, 12:15 UTCMay 9, 19:45 UTC7h 30m
2026-05-09 DLH7K FRA → BOS May 9, 12:00 UTCMay 9, 12:05 UTC5m
2026-05-08 DLH441 IAH → FRA May 8, 21:25 UTCMay 9, 06:15 UTC8h 50m
2026-05-08 DLH3CF ARN → FRA May 8, 08:29 UTCMay 8, 19:00 UTC10h 30m
2026-05-08 DLH423 BOS → FRA May 8, 03:04 UTCMay 8, 05:00 UTC1h 55m
2026-05-07 DLH423 BOS → FRA May 7, 22:40 UTCMay 7, 23:39 UTC59m
2026-05-07 DLH7K FRA → BOS May 7, 12:05 UTCMay 7, 19:40 UTC7h 35m
2026-05-06 DLH441 IAH → FRA May 6, 21:50 UTCMay 7, 06:35 UTC8h 45m
2026-05-06 DLH3CF ARN → FRA May 6, 08:35 UTCMay 6, 19:05 UTC10h 29m
2026-05-05 DLH781 SIN → FRA May 5, 16:20 UTCMay 6, 04:40 UTC12h 20m
2026-05-04 DLH780 FRA → SIN May 4, 20:05 UTCMay 5, 07:35 UTC11h 30m
2026-05-03 DLH493 YVR → FRA May 3, 23:35 UTCMay 4, 08:30 UTC8h 55m
2026-05-03 DLH492 FRA → YVR May 3, 11:55 UTCMay 3, 21:10 UTC9h 15m
2026-05-02 DLH441 IAH → FRA May 2, 21:50 UTCMay 3, 06:50 UTC8h 59m
2026-05-02 DLH3CF ARN → FRA May 2, 09:00 UTCMay 2, 18:55 UTC9h 55m
2026-05-01 DLH781 SIN → FRA May 1, 16:20 UTCMay 2, 04:30 UTC12h 10m
2026-04-30 DLH780 FRA → SIN Apr 30, 20:15 UTCMay 1, 08:05 UTC11h 50m
2026-04-29 DLH455 SFO → FRA Apr 29, 22:15 UTCApr 30, 08:40 UTC10h 24m
2026-04-29 DLH454 FRA → SFO Apr 29, 09:00 UTCApr 29, 19:45 UTC10h 45m
2026-04-27 DLH493 YVR → FRA Apr 27, 23:45 UTCApr 28, 09:00 UTC9h 15m
2026-04-27 DLH492 FRA → YVR Apr 27, 11:50 UTCApr 27, 21:15 UTC9h 25m
2026-04-26 DLH441 IAH → FRA Apr 26, 21:30 UTCApr 27, 06:35 UTC9h 5m
2026-04-26 DLH3CF ARN → FRA Apr 26, 09:10 UTCApr 26, 19:05 UTC9h 55m
2026-04-25 DLH781 SIN → FRA Apr 25, 16:20 UTCApr 26, 04:55 UTC12h 35m
2026-04-24 DLH780 FRA → SIN Apr 24, 20:15 UTCApr 25, 08:00 UTC11h 45m
2026-04-23 DLH493 YVR → FRA Apr 23, 23:35 UTCApr 24, 08:40 UTC9h 5m
2026-04-23 DLH492 FRA → YVR Apr 23, 11:50 UTCApr 23, 21:15 UTC9h 24m
2026-04-22 DLH493 YVR → FRA Apr 22, 00:00 UTCApr 22, 09:00 UTC9h 0m
2026-04-21 DLH492 FRA → YVR Apr 21, 12:01 UTCApr 21, 21:40 UTC9h 40m
2026-04-20 DLH441 IAH → FRA Apr 20, 21:05 UTCApr 21, 06:25 UTC9h 20m

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

Mode-S 3C4A8C frequently asked

What is Mode-S code 3C4A8C?
3C4A8C is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABTL.
Where is Mode-S 3C4A8C registered?
Mode-S code 3C4A8C is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4A8C broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4A8C, octal 17045214, decimal 3,951,244.
What flights does 3C4A8C operate?
Mode-S 3C4A8C has broadcast 12 distinct callsigns, including DLH493, DLH492, DLH7K, DLH441, DLH423.