Apparatus

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sensors Mode-S transponder

3C61F9

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AHOY · DASSAULT Falcon 900

Hex
3C61F9
Octal
17060771
Decimal
3,957,241
Country
DE
Tail
D-AHOY
Type
F900
No current signal · last broadcast 20h ago
Flights observed
74
Distinct callsigns
20
Country
DE
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 3C61F9.

Country allocation

The ICAO 24-bit address 3C61F9 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
LUA863H - 6 2026-06-02
LUA518E - 6 2026-06-21
LUA967G - 3 2026-05-13
LUA733C - 3 2026-05-28
LUA635K - 3 2026-06-10
LUA979S - 2 2026-05-24
LUA851N - 2 2026-06-03
LUA834U - 2 2026-06-09
LUA710R - 2 2026-06-04
LUA691X - 2 2026-05-14
LUA647A - 2 2026-05-20
LUA576S - 2 2026-06-17
LUA497Y - 2 2026-06-15
LUA496T - 2 2026-06-14
LUA368S - 2 2026-05-11
LUA325P - 2 2026-06-13
LUA319P - 2 2026-06-23
LUA255W - 2 2026-06-03
LUA235F - 2 2026-05-22
LUA187S - 2 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-23 LUA319P - Jun 23, 15:19 UTCJun 23, 17:04 UTC1h 45m
2026-06-23 LUA319P - Jun 23, 13:15 UTCJun 23, 14:39 UTC1h 25m
2026-06-22 LUA142W SOU → LBG Jun 22, 06:29 UTCJun 22, 07:10 UTC40m
2026-06-21 LUA518E - Jun 21, 13:00 UTCJun 21, 13:59 UTC1h 0m
2026-06-21 LUA518E - Jun 21, 10:54 UTCJun 21, 11:34 UTC40m
2026-06-19 LUA298N - Jun 19, 12:59 UTCJun 19, 14:09 UTC1h 10m
2026-06-19 LUA138F - Jun 19, 09:24 UTCJun 19, 10:59 UTC1h 35m
2026-06-18 LUA138F MAN → EMA Jun 18, 13:50 UTCJun 18, 14:20 UTC30m
2026-06-18 LUA190Y NCE → MAN Jun 18, 10:50 UTCJun 18, 12:45 UTC1h 55m
2026-06-17 LUA843N - Jun 17, 11:25 UTCJun 17, 12:55 UTC1h 30m
2026-06-17 LUA576S - Jun 17, 07:20 UTCJun 17, 09:25 UTC2h 5m
2026-06-16 LUA576S - Jun 16, 15:30 UTCJun 16, 17:35 UTC2h 5m
2026-06-16 LUA495A - Jun 16, 12:05 UTCJun 16, 13:30 UTC1h 25m
2026-06-15 LUA497Y NCE → LTN Jun 15, 12:19 UTCJun 15, 14:05 UTC1h 45m
2026-06-15 LUA497Y - Jun 15, 08:40 UTCJun 15, 10:15 UTC1h 35m
2026-06-14 LUA496T IBZ → BQH Jun 14, 09:25 UTCJun 14, 11:35 UTC2h 10m
2026-06-14 LUA496T - Jun 14, 07:25 UTCJun 14, 07:50 UTC25m
2026-06-13 LUA325P - Jun 13, 09:55 UTCJun 13, 12:15 UTC2h 20m
2026-06-13 LUA325P - Jun 13, 07:10 UTCJun 13, 08:15 UTC1h 5m
2026-06-10 LUA321N IBZ → LBG Jun 10, 19:45 UTCJun 10, 21:30 UTC1h 45m
2026-06-10 LUA635K BQH → IBZ Jun 10, 17:00 UTCJun 10, 18:45 UTC1h 45m
2026-06-09 LUA834U NCE → BQH Jun 9, 20:05 UTCJun 9, 21:35 UTC1h 30m
2026-06-09 LUA834U - Jun 9, 14:40 UTCJun 9, 15:50 UTC1h 10m
2026-06-09 LUA635K IBZ → BQH Jun 9, 11:15 UTCJun 9, 13:20 UTC2h 5m
2026-06-09 LUA635K BQH → IBZ Jun 9, 08:10 UTCJun 9, 10:10 UTC2h 0m
2026-06-08 LUA518E OPO → BQH Jun 8, 16:40 UTCJun 8, 18:30 UTC1h 50m
2026-06-08 LUA518E DUB → OPO Jun 8, 11:35 UTCJun 8, 13:40 UTC2h 5m
2026-06-07 LUA638Y OPO → DUB Jun 7, 18:20 UTCJun 7, 20:10 UTC1h 50m
2026-06-07 LUA518E BCN → OPO Jun 7, 14:55 UTCJun 7, 16:20 UTC1h 25m
2026-06-07 LUA518E - Jun 7, 12:05 UTCJun 7, 13:20 UTC1h 15m
2026-06-06 LUA945C - Jun 6, 11:35 UTCJun 6, 16:20 UTC4h 45m
2026-06-04 LUA710R - Jun 4, 18:05 UTCJun 4, 19:30 UTC1h 25m
2026-06-04 LUA710R - Jun 4, 15:15 UTCJun 4, 16:20 UTC1h 5m
2026-06-03 LUA255W - Jun 3, 17:55 UTCJun 3, 20:50 UTC2h 55m
2026-06-03 LUA255W - Jun 3, 15:45 UTCJun 3, 16:30 UTC45m
2026-06-03 LUA851N - Jun 3, 11:20 UTCJun 3, 13:25 UTC2h 5m
2026-06-02 LUA851N - Jun 2, 14:35 UTCJun 2, 15:30 UTC55m
2026-06-02 LUA863H - Jun 2, 10:35 UTCJun 2, 12:40 UTC2h 5m
2026-06-01 LUA863H - Jun 1, 13:20 UTCJun 1, 13:55 UTC35m
2026-05-31 LUA752G - May 31, 17:30 UTCMay 31, 19:10 UTC1h 40m
2026-05-31 LUA110Y - May 31, 12:50 UTCMay 31, 14:30 UTC1h 40m
2026-05-31 LUA863H MXP → OXF May 31, 09:45 UTCMay 31, 11:20 UTC1h 35m
2026-05-30 LUA863H IBZ → MXP May 30, 17:30 UTCMay 30, 19:00 UTC1h 30m
2026-05-29 LUA863H - May 29, 10:30 UTCMay 29, 12:35 UTC2h 5m
2026-05-29 LUA863H FRA → OXF May 29, 07:15 UTCMay 29, 08:30 UTC1h 15m
2026-05-28 LUA733C - May 28, 14:15 UTCMay 28, 15:00 UTC45m
2026-05-27 LUA733C FRA → LBG May 27, 07:30 UTCMay 27, 08:25 UTC55m
2026-05-27 LUA733C - May 27, 05:40 UTCMay 27, 06:25 UTC45m
2026-05-25 LUA007M FKB → LBG May 25, 13:55 UTCMay 25, 14:50 UTC55m
2026-05-24 LUA299P - May 24, 16:50 UTCMay 24, 17:50 UTC1h 0m

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

Mode-S 3C61F9 frequently asked

What is Mode-S code 3C61F9?
3C61F9 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AHOY.
Where is Mode-S 3C61F9 registered?
Mode-S code 3C61F9 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C61F9 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C61F9, octal 17060771, decimal 3,957,241.
What flights does 3C61F9 operate?
Mode-S 3C61F9 has broadcast 20 distinct callsigns, including LUA863H, LUA518E, LUA967G, LUA733C, LUA635K.