Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3C651A

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIHZ · AIRBUS A-340-600

Hex
3C651A
Octal
17062432
Decimal
3,958,042
Country
DE
Tail
D-AIHZ
Type
A346
No current signal · last broadcast 5h ago
Flights observed
138
Distinct callsigns
14
Country
DE
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 3C651A.

Country allocation

The ICAO 24-bit address 3C651A 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 14 distinct

Callsign Airline Flights Last seen
DLH419 - 26 2026-07-11
DLH3W - 22 2026-07-11
DLH400 - 20 2026-07-12
DLH401 - 19 2026-07-12
DLH416 - 13 2026-07-13
DLH417 - 12 2026-07-13
DLH403 Lufthansa 9 2026-05-13
DLH402 Lufthansa 9 2026-05-13
DLH443 - 2 2026-06-22
DLH3V Lufthansa 2 2026-06-22
DLH9923 - 1 2026-06-27
DLH4T3 - 1 2026-07-06
DLH433 Lufthansa 1 2026-06-13
DLH432 - 1 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DLH417 IAD → FRA Jul 13, 19:40 UTCJul 14, 03:15 UTC7h 35m
2026-07-13 DLH416 FRA → IAD Jul 13, 09:05 UTCJul 13, 17:20 UTC8h 15m
2026-07-12 DLH401 - Jul 12, 20:30 UTCJul 13, 03:25 UTC6h 55m
2026-07-12 DLH400 FRA → JFK Jul 12, 09:25 UTCJul 12, 17:05 UTC7h 40m
2026-07-11 DLH419 IAD → FRA Jul 11, 22:30 UTCJul 12, 05:40 UTC7h 10m
2026-07-11 DLH3W FRA → IAD Jul 11, 11:40 UTCJul 11, 20:00 UTC8h 20m
2026-07-10 DLH419 IAD → FRA Jul 10, 23:10 UTCJul 11, 06:30 UTC7h 20m
2026-07-10 DLH3W FRA → IAD Jul 10, 11:45 UTCJul 10, 20:30 UTC8h 45m
2026-07-08 DLH417 IAD → FRA Jul 8, 19:40 UTCJul 9, 03:20 UTC7h 40m
2026-07-08 DLH416 FRA → IAD Jul 8, 09:05 UTCJul 8, 17:20 UTC8h 15m
2026-07-07 DLH419 IAD → FRA Jul 7, 00:25 UTCJul 7, 07:35 UTC7h 10m
2026-07-06 DLH3W FRA → IAD Jul 6, 12:00 UTCJul 6, 20:35 UTC8h 35m
2026-07-06 DLH4T3 - Jul 6, 00:35 UTCJul 6, 07:40 UTC7h 5m
2026-07-04 DLH3W FRA → IAD Jul 4, 11:50 UTCJul 4, 20:35 UTC8h 45m
2026-07-03 DLH401 JFK → FRA Jul 3, 20:25 UTCJul 4, 03:15 UTC6h 50m
2026-07-03 DLH400 FRA → JFK Jul 3, 09:20 UTCJul 3, 17:35 UTC8h 15m
2026-07-02 DLH419 IAD → FRA Jul 2, 22:55 UTCJul 3, 05:55 UTC7h 0m
2026-07-02 DLH3W FRA → IAD Jul 2, 11:55 UTCJul 2, 20:35 UTC8h 40m
2026-07-01 DLH401 JFK → FRA Jul 1, 20:40 UTCJul 2, 03:30 UTC6h 50m
2026-07-01 DLH400 - Jul 1, 09:30 UTCJul 1, 17:40 UTC8h 10m
2026-07-01 DLH401 - Jul 1, 03:00 UTCJul 1, 03:20 UTC20m
2026-06-30 DLH401 - Jun 30, 20:30 UTCJul 1, 02:55 UTC6h 25m
2026-06-30 DLH400 FRA → JFK Jun 30, 09:45 UTCJun 30, 17:25 UTC7h 40m
2026-06-27 DLH9923 JFK → FRA Jun 27, 22:25 UTCJun 28, 05:09 UTC6h 45m
2026-06-25 DLH400 FRA → JFK Jun 25, 09:45 UTCJun 25, 17:44 UTC8h 0m
2026-06-22 DLH443 - Jun 22, 21:00 UTCJun 23, 04:09 UTC7h 10m
2026-06-22 DLH3V FRA → DTW Jun 22, 09:54 UTCJun 22, 18:19 UTC8h 25m
2026-06-21 DLH417 IAD → FRA Jun 21, 19:45 UTCJun 22, 03:05 UTC7h 20m
2026-06-21 DLH416 FRA → IAD Jun 21, 09:10 UTCJun 21, 17:29 UTC8h 20m
2026-06-20 DLH443 - Jun 20, 21:05 UTCJun 21, 04:39 UTC7h 35m
2026-06-20 DLH3V FRA → DTW Jun 20, 09:44 UTCJun 20, 17:59 UTC8h 15m
2026-06-19 DLH417 IAD → FRA Jun 19, 20:09 UTCJun 20, 03:14 UTC7h 5m
2026-06-19 DLH416 FRA → IAD Jun 19, 09:14 UTCJun 19, 17:49 UTC8h 35m
2026-06-17 DLH417 - Jun 17, 19:45 UTCJun 18, 03:15 UTC7h 30m
2026-06-17 DLH416 - Jun 17, 08:55 UTCJun 17, 17:05 UTC8h 10m
2026-06-16 DLH401 - Jun 16, 20:35 UTCJun 17, 03:20 UTC6h 45m
2026-06-16 DLH400 FRA → JFK Jun 16, 09:34 UTCJun 16, 17:30 UTC7h 55m
2026-06-15 DLH417 IAD → FRA Jun 15, 19:50 UTCJun 16, 03:10 UTC7h 20m
2026-06-15 DLH416 FRA → IAD Jun 15, 09:00 UTCJun 15, 17:30 UTC8h 30m
2026-06-14 DLH401 JFK → FRA Jun 14, 20:20 UTCJun 15, 03:15 UTC6h 54m
2026-06-14 DLH400 FRA → JFK Jun 14, 09:50 UTCJun 14, 17:45 UTC7h 55m
2026-06-13 DLH433 ORD → FRA Jun 13, 05:05 UTCJun 13, 12:55 UTC7h 50m
2026-06-12 DLH432 FRA → ORD Jun 12, 16:50 UTCJun 13, 01:30 UTC8h 40m
2026-06-11 DLH417 IAD → FRA Jun 11, 19:50 UTCJun 12, 03:15 UTC7h 26m
2026-06-11 DLH416 FRA → IAD Jun 11, 09:05 UTCJun 11, 17:40 UTC8h 35m
2026-06-09 DLH401 JFK → FRA Jun 9, 20:10 UTCJun 10, 03:10 UTC7h 0m
2026-06-09 DLH400 FRA → JFK Jun 9, 16:45 UTCJun 9, 17:15 UTC30m
2026-06-09 DLH400 FRA → JFK Jun 9, 09:35 UTCJun 9, 15:50 UTC6h 15m
2026-06-08 DLH401 JFK → FRA Jun 8, 20:00 UTCJun 9, 03:05 UTC7h 5m
2026-06-08 DLH400 FRA → JFK Jun 8, 09:25 UTCJun 8, 16:50 UTC7h 25m

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

Mode-S 3C651A frequently asked

What is Mode-S code 3C651A?
3C651A is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIHZ.
Where is Mode-S 3C651A registered?
Mode-S code 3C651A is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C651A broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C651A, octal 17062432, decimal 3,958,042.
What flights does 3C651A operate?
Mode-S 3C651A has broadcast 14 distinct callsigns, including DLH419, DLH3W, DLH400, DLH401, DLH416.