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 7d ago
Flights observed
126
Distinct callsigns
20
Country
DE
Last broadcast
7d 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 22 2026-07-25
NGN4830 LEAV Aviation 22 2026-07-25
NGN4821 LEAV Aviation 17 2026-07-24
NGN4820 LEAV Aviation 17 2026-07-24
NGN4940 LEAV Aviation 12 2026-07-25
NGN4941 LEAV Aviation 8 2026-07-22
NGN901P - 3 2026-07-05
NGN7604 - 2 2026-06-14
TFL4055 - 1 2026-07-20
TFL093P Arkefly 1 2026-07-20
TFL090P Arkefly 1 2026-07-20
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
NGN900P - 1 2026-07-05
NGN816P - 1 2026-04-12
NGN7750 - 1 2026-07-05
NGN7501 - 1 2026-05-22
NGN7002 LEAV Aviation 1 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 NGN4940 FMO → FUE Jul 25, 11:55 UTCJul 25, 22:25 UTC10h 30m
2026-07-25 NGN4831 HER → FMO Jul 25, 07:30 UTCJul 25, 10:40 UTC3h 10m
2026-07-25 NGN4830 FMO → HER Jul 25, 03:10 UTCJul 25, 05:45 UTC2h 35m
2026-07-24 NGN4821 RHO → FMO Jul 24, 10:25 UTCJul 24, 13:40 UTC3h 15m
2026-07-24 NGN4820 FMO → RHO Jul 24, 05:10 UTCJul 24, 08:05 UTC2h 55m
2026-07-23 NGN4831 HER → FMO Jul 23, 17:20 UTCJul 23, 20:25 UTC3h 5m
2026-07-23 NGN4830 FMO → HER Jul 23, 13:20 UTCJul 23, 15:55 UTC2h 35m
2026-07-22 NGN4941 FUE → FMO Jul 22, 12:50 UTCJul 22, 16:35 UTC3h 45m
2026-07-22 NGN4940 FMO → FUE Jul 22, 10:20 UTCJul 22, 11:30 UTC1h 10m
2026-07-21 NGN4821 RHO → FMO Jul 21, 09:45 UTCJul 21, 13:00 UTC3h 15m
2026-07-21 NGN4820 FMO → RHO Jul 21, 05:20 UTCJul 21, 08:15 UTC2h 55m
2026-07-20 TFL093P BRU → RTM Jul 20, 20:45 UTCJul 20, 23:50 UTC3h 5m
2026-07-20 TFL4055 - Jul 20, 16:30 UTCJul 20, 19:30 UTC3h 0m
2026-07-20 TFL090P AMS → LIS Jul 20, 14:05 UTCJul 20, 14:40 UTC35m
2026-07-20 NGN4831 HER → FMO Jul 20, 10:30 UTCJul 20, 13:20 UTC2h 50m
2026-07-20 NGN4830 FMO → HER Jul 20, 06:10 UTCJul 20, 08:50 UTC2h 40m
2026-07-18 NGN4941 FUE → FMO Jul 18, 17:55 UTCJul 18, 21:35 UTC3h 40m
2026-07-18 NGN4940 - Jul 18, 11:55 UTCJul 18, 16:15 UTC4h 20m
2026-07-18 NGN4831 HER → FMO Jul 18, 07:25 UTCJul 18, 10:30 UTC3h 5m
2026-07-18 NGN4830 FMO → HER Jul 18, 03:05 UTCJul 18, 05:50 UTC2h 45m
2026-07-17 NGN4821 RHO → FMO Jul 17, 10:05 UTCJul 17, 13:25 UTC3h 20m
2026-07-17 NGN4820 FMO → RHO Jul 17, 05:10 UTCJul 17, 08:15 UTC3h 5m
2026-07-16 NGN4831 - Jul 16, 14:05 UTCJul 16, 17:14 UTC3h 10m
2026-07-16 NGN4830 - Jul 16, 09:40 UTCJul 16, 12:14 UTC2h 35m
2026-07-15 NGN4941 - Jul 15, 13:05 UTCJul 15, 16:50 UTC3h 45m
2026-07-15 NGN4940 - Jul 15, 07:20 UTCJul 15, 11:55 UTC4h 35m
2026-07-14 NGN4821 RHO → FMO Jul 14, 09:50 UTCJul 14, 13:20 UTC3h 30m
2026-07-14 NGN4820 - Jul 14, 05:15 UTCJul 14, 08:10 UTC2h 55m
2026-07-13 NGN4831 - Jul 13, 09:35 UTCJul 13, 12:35 UTC3h 0m
2026-07-13 NGN4830 - Jul 13, 05:15 UTCJul 13, 08:15 UTC3h 0m
2026-07-11 NGN4940 - Jul 11, 11:50 UTCJul 11, 21:10 UTC9h 20m
2026-07-11 NGN4831 - Jul 11, 07:25 UTCJul 11, 10:25 UTC3h 0m
2026-07-11 NGN4830 - Jul 11, 03:10 UTCJul 11, 05:55 UTC2h 45m
2026-07-10 NGN4821 RHO → FMO Jul 10, 09:45 UTCJul 10, 13:10 UTC3h 25m
2026-07-10 NGN4820 FMO → RHO Jul 10, 05:10 UTCJul 10, 08:05 UTC2h 55m
2026-07-09 NGN4831 - Jul 9, 14:05 UTCJul 9, 17:15 UTC3h 10m
2026-07-09 NGN4830 - Jul 9, 09:35 UTCJul 9, 12:20 UTC2h 45m
2026-07-08 NGN4941 FUE → FMO Jul 8, 12:35 UTCJul 8, 16:35 UTC4h 0m
2026-07-08 NGN4940 - Jul 8, 07:15 UTCJul 8, 11:20 UTC4h 5m
2026-07-07 NGN4821 RHO → FMO Jul 7, 10:05 UTCJul 7, 13:30 UTC3h 25m
2026-07-07 NGN4820 FMO → RHO Jul 7, 05:05 UTCJul 7, 08:05 UTC3h 0m
2026-07-06 NGN4831 - Jul 6, 09:20 UTCJul 6, 12:35 UTC3h 15m
2026-07-06 NGN4830 - Jul 6, 05:05 UTCJul 6, 07:50 UTC2h 45m
2026-07-05 NGN901P DUB → FMO Jul 5, 16:55 UTCJul 5, 18:15 UTC1h 20m
2026-07-05 NGN7750 - Jul 5, 15:15 UTCJul 5, 15:50 UTC35m
2026-07-05 NGN900P - Jul 5, 11:35 UTCJul 5, 13:05 UTC1h 30m
2026-07-04 NGN4941 FUE → FMO Jul 4, 17:25 UTCJul 4, 21:25 UTC4h 0m
2026-07-04 NGN4940 - Jul 4, 11:50 UTCJul 4, 16:00 UTC4h 10m
2026-07-04 NGN4831 - Jul 4, 07:30 UTCJul 4, 10:40 UTC3h 10m
2026-07-04 NGN4830 - Jul 4, 03:10 UTCJul 4, 05:50 UTC2h 40m

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 7d 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.