Apparatus

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sensors Mode-S transponder

3C5099

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ADDY · AIRBUS A-320

Hex
3C5099
Octal
17050231
Decimal
3,952,793
Country
DE
Tail
D-ADDY
Type
A320
No current signal · last broadcast 2d ago
Flights observed
50
Distinct callsigns
20
Country
DE
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 3C5099.

Country allocation

The ICAO 24-bit address 3C5099 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
NGN4831 LEAV Aviation 7 2026-06-15
NGN4830 LEAV Aviation 7 2026-06-15
NGN4821 LEAV Aviation 6 2026-06-16
NGN4820 LEAV Aviation 6 2026-06-16
NGN4940 LEAV Aviation 3 2026-06-13
NGN901P LEAV Aviation 2 2026-06-14
NGN7604 - 2 2026-06-14
NGN4941 LEAV Aviation 2 2026-05-30
SDR92DF - 1 2026-05-04
SDR91CF City Airline 1 2026-05-03
SDR41QT City Airline 1 2026-05-04
SDR41PX City Airline 1 2026-05-04
NGN816P - 1 2026-04-12
NGN7501 - 1 2026-05-22
NGN7002 LEAV Aviation 1 2026-06-06
NGN7001 - 1 2026-06-04
GER604F - 1 2026-06-03
GER604 - 1 2026-06-03
GER603P - 1 2026-06-03
GER603 - 1 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-16 NGN4821 RHO → FMO Jun 16, 09:45 UTCJun 16, 13:04 UTC3h 20m
2026-06-16 NGN4820 FMO → RHO Jun 16, 05:10 UTCJun 16, 08:10 UTC3h 0m
2026-06-15 NGN4831 HER → FMO Jun 15, 09:45 UTCJun 15, 13:00 UTC3h 15m
2026-06-15 NGN4830 FMO → HER Jun 15, 05:10 UTCJun 15, 07:50 UTC2h 40m
2026-06-14 NGN901P LEJ → BLL Jun 14, 11:50 UTCJun 14, 14:10 UTC2h 20m
2026-06-14 NGN7604 FRA → BDS Jun 14, 09:10 UTCJun 14, 10:50 UTC1h 40m
2026-06-14 NGN7604 - Jun 14, 07:10 UTCJun 14, 07:45 UTC35m
2026-06-13 NGN4940 FMO → FUE Jun 13, 12:45 UTCJun 13, 22:15 UTC9h 30m
2026-06-13 NGN4831 HER → FMO Jun 13, 07:55 UTCJun 13, 11:15 UTC3h 20m
2026-06-13 NGN4830 FMO → HER Jun 13, 03:20 UTCJun 13, 06:00 UTC2h 39m
2026-06-12 NGN4821 RHO → FMO Jun 12, 09:40 UTCJun 12, 13:05 UTC3h 25m
2026-06-12 NGN4820 FMO → RHO Jun 12, 05:15 UTCJun 12, 08:15 UTC3h 0m
2026-06-09 NGN4821 RHO → FMO Jun 9, 10:10 UTCJun 9, 13:30 UTC3h 20m
2026-06-09 NGN4820 FMO → RHO Jun 9, 05:15 UTCJun 9, 08:15 UTC3h 0m
2026-06-08 NGN4831 HER → FMO Jun 8, 09:40 UTCJun 8, 12:45 UTC3h 5m
2026-06-08 NGN4830 FMO → HER Jun 8, 05:10 UTCJun 8, 07:55 UTC2h 45m
2026-06-06 NGN7002 LIS → BWE Jun 6, 16:50 UTCJun 6, 19:14 UTC2h 25m
2026-06-04 NGN7001 - Jun 4, 07:10 UTCJun 4, 09:15 UTC2h 5m
2026-06-03 GER604F LNZ → FMO Jun 3, 19:35 UTCJun 3, 20:45 UTC1h 10m
2026-06-03 GER604 - Jun 3, 18:10 UTCJun 3, 19:05 UTC55m
2026-06-03 GER603 LNZ → HAJ Jun 3, 04:55 UTCJun 3, 05:50 UTC55m
2026-06-03 GER603P - Jun 3, 02:15 UTCJun 3, 03:35 UTC1h 20m
2026-06-02 NGN4821 RHO → FMO Jun 2, 10:00 UTCJun 2, 13:20 UTC3h 20m
2026-06-02 NGN4820 FMO → RHO Jun 2, 05:10 UTCJun 2, 08:15 UTC3h 5m
2026-06-01 NGN4831 HER → FMO Jun 1, 09:40 UTCJun 1, 12:45 UTC3h 5m
2026-06-01 NGN4830 FMO → HER Jun 1, 05:15 UTCJun 1, 08:05 UTC2h 50m
2026-05-30 NGN4941 FUE → FMO May 30, 17:30 UTCMay 30, 21:40 UTC4h 10m
2026-05-30 NGN4940 FMO → FUE May 30, 12:05 UTCMay 30, 16:15 UTC4h 10m
2026-05-30 NGN4831 HER → FMO May 30, 07:35 UTCMay 30, 10:40 UTC3h 5m
2026-05-30 NGN4830 FMO → HER May 30, 03:05 UTCMay 30, 05:50 UTC2h 45m
2026-05-29 NGN4821 RHO → FMO May 29, 10:55 UTCMay 29, 14:10 UTC3h 15m
2026-05-29 NGN4820 FMO → RHO May 29, 05:05 UTCMay 29, 08:10 UTC3h 5m
2026-05-26 NGN4821 RHO → FMO May 26, 10:05 UTCMay 26, 13:10 UTC3h 5m
2026-05-26 NGN4820 FMO → RHO May 26, 05:15 UTCMay 26, 08:19 UTC3h 5m
2026-05-25 NGN4831 HER → FMO May 25, 09:30 UTCMay 25, 12:25 UTC2h 55m
2026-05-25 NGN4830 FMO → HER May 25, 05:15 UTCMay 25, 08:10 UTC2h 55m
2026-05-23 NGN4941 FUE → FMO May 23, 17:45 UTCMay 23, 21:45 UTC4h 0m
2026-05-23 NGN4940 FMO → FUE May 23, 11:55 UTCMay 23, 16:00 UTC4h 5m
2026-05-23 NGN4831 HER → FMO May 23, 07:45 UTCMay 23, 10:45 UTC3h 0m
2026-05-23 NGN4830 FMO → HER May 23, 03:10 UTCMay 23, 06:00 UTC2h 50m
2026-05-22 NGN901P LEJ → BLL May 22, 12:20 UTCMay 22, 15:25 UTC3h 5m
2026-05-22 NGN7501 - May 22, 08:05 UTCMay 22, 10:45 UTC2h 40m
2026-05-10 CXI038P VIE → CGN May 10, 19:54 UTCMay 10, 21:10 UTC1h 15m
2026-05-10 CXI64EA VIE → HRG May 10, 10:00 UTCMay 10, 18:45 UTC8h 45m
2026-05-10 CXI037P NUE → HAM May 10, 07:19 UTCMay 10, 08:20 UTC1h 0m
2026-05-04 SDR92DF - May 4, 11:05 UTCMay 4, 12:00 UTC55m
2026-05-04 SDR41PX HER → DRS May 4, 07:35 UTCMay 4, 10:20 UTC2h 45m
2026-05-04 SDR41QT DRS → HER May 4, 03:35 UTCMay 4, 05:55 UTC2h 20m
2026-05-03 SDR91CF MAD → HAJ May 3, 14:25 UTCMay 3, 15:10 UTC45m
2026-04-12 NGN816P - Apr 12, 17:20 UTCApr 12, 19:25 UTC2h 5m

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

Mode-S 3C5099 frequently asked

What is Mode-S code 3C5099?
3C5099 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ADDY.
Where is Mode-S 3C5099 registered?
Mode-S code 3C5099 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C5099 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 3C5099, octal 17050231, decimal 3,952,793.
What flights does 3C5099 operate?
Mode-S 3C5099 has broadcast 20 distinct callsigns, including NGN4831, NGN4830, NGN4821, NGN4820, NGN4940.