Apparatus

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sensors Mode-S transponder

3C0CA3

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ATUK · BOEING 737-800

Hex
3C0CA3
Octal
17006243
Decimal
3,935,395
Country
DE
Tail
D-ATUK
Type
B738
No current signal · last broadcast Jul 26, 18:40 UTC
Flights observed
346
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 18:40 UTC

Last known position

Most recent position reported by Mode-S 3C0CA3.

Country allocation

The ICAO 24-bit address 3C0CA3 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
TUI1A - 9 2026-06-17
TUI87W TUIfly 8 2026-07-22
TUI3MC - 8 2026-07-07
TUI7KT - 7 2026-07-07
TUI6HA TUIfly 7 2026-06-13
TUI5E TUIfly 7 2026-06-10
TUI4KT TUIfly 7 2026-06-16
TUI36E TUIfly 7 2026-06-13
TUI2FC - 7 2026-07-21
TUI3NG - 6 2026-06-18
TUI3FB TUIfly 6 2026-06-16
TUI9XJ - 5 2026-07-06
TUI98Y TUIfly 5 2026-06-11
TUI8EA - 5 2026-07-02
TUI85N - 5 2026-07-21
TUI4D TUIfly 5 2026-05-04
TUI45C - 5 2026-07-22
TUI3JD TUIfly 5 2026-06-16
TUI35X - 5 2026-07-02
TUI1TX - 5 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TUI824P HAJ → BRU Jul 26, 17:50 UTCJul 26, 18:35 UTC45m
2026-07-25 TUI2EA TFS → FRA Jul 25, 16:35 UTCJul 25, 20:15 UTC3h 40m
2026-07-25 TUI7VB FRA → TFS Jul 25, 10:30 UTCJul 25, 14:30 UTC4h 0m
2026-07-25 TUI1KN PMI → FRA Jul 25, 07:05 UTCJul 25, 09:00 UTC1h 55m
2026-07-25 TUI3WL RHO → DUS Jul 25, 03:55 UTCJul 25, 05:40 UTC1h 45m
2026-07-24 TUI904P CGN → STR Jul 24, 19:25 UTCJul 24, 19:55 UTC30m
2026-07-23 TUI49E TFS → DUS Jul 23, 16:35 UTCJul 23, 20:20 UTC3h 45m
2026-07-23 TUI2KM DUS → PMI Jul 23, 10:35 UTCJul 23, 14:50 UTC4h 15m
2026-07-23 TUI4PE MAH → DUS Jul 23, 07:25 UTCJul 23, 09:20 UTC1h 55m
2026-07-23 TUI28E MUC → MAH Jul 23, 04:20 UTCJul 23, 06:00 UTC1h 40m
2026-07-22 TUI1TX RHO → MUC Jul 22, 17:30 UTCJul 22, 20:10 UTC2h 40m
2026-07-22 TUI45C MUC → RHO Jul 22, 13:25 UTCJul 22, 15:50 UTC2h 25m
2026-07-22 TUI87W MUC → STR Jul 22, 04:25 UTCJul 22, 05:25 UTC1h 0m
2026-07-21 TUI3PX FNC → MUC Jul 21, 17:35 UTCJul 21, 21:20 UTC3h 45m
2026-07-21 TUI85N - Jul 21, 16:10 UTCJul 21, 16:25 UTC15m
2026-07-21 TUI85N - Jul 21, 12:20 UTCJul 21, 15:30 UTC3h 10m
2026-07-21 TUI2FC - Jul 21, 08:35 UTCJul 21, 11:00 UTC2h 25m
2026-07-21 TUI87W MUC → STR Jul 21, 04:50 UTCJul 21, 06:55 UTC2h 5m
2026-07-20 TUI2FC - Jul 20, 16:05 UTCJul 20, 18:25 UTC2h 20m
2026-07-20 TUI87W MUC → STR Jul 20, 12:15 UTCJul 20, 14:25 UTC2h 10m
2026-07-20 TUI1TX RHO → MUC Jul 20, 07:55 UTCJul 20, 10:35 UTC2h 40m
2026-07-20 TUI45C MUC → RHO Jul 20, 04:10 UTCJul 20, 06:35 UTC2h 25m
2026-07-19 TUI3PX FNC → MUC Jul 19, 17:20 UTCJul 19, 21:05 UTC3h 45m
2026-07-19 TUI85N MUC → FNC Jul 19, 12:00 UTCJul 19, 16:10 UTC4h 10m
2026-07-19 TUI2FC - Jul 19, 08:05 UTCJul 19, 10:45 UTC2h 40m
2026-07-19 TUI87W MUC → STR Jul 19, 04:05 UTCJul 19, 06:15 UTC2h 10m
2026-07-18 TUI2FC - Jul 18, 16:05 UTCJul 18, 18:40 UTC2h 35m
2026-07-18 TUI87W - Jul 18, 12:30 UTCJul 18, 14:40 UTC2h 10m
2026-07-18 TUI1TX RHO → MUC Jul 18, 08:00 UTCJul 18, 11:00 UTC3h 0m
2026-07-18 TUI45C MUC → RHO Jul 18, 04:20 UTCJul 18, 06:40 UTC2h 20m
2026-07-17 TUI74N MUC → MUC Jul 17, 12:04 UTCJul 17, 21:20 UTC9h 15m
2026-07-17 TUI123 DLM → MUC Jul 17, 07:55 UTCJul 17, 10:35 UTC2h 40m
2026-07-17 TUI64G MUC → DLM Jul 17, 04:14 UTCJul 17, 06:29 UTC2h 15m
2026-07-16 TUI56Y OPO → MUC Jul 16, 17:05 UTCJul 16, 19:14 UTC2h 10m
2026-07-16 TUI5TV MUC → OPO Jul 16, 12:40 UTCJul 16, 15:25 UTC2h 45m
2026-07-16 TUI1TX RHO → MUC Jul 16, 08:00 UTCJul 16, 10:50 UTC2h 50m
2026-07-16 TUI45C MUC → RHO Jul 16, 04:15 UTCJul 16, 06:40 UTC2h 25m
2026-07-15 TUI7H - Jul 15, 17:30 UTCJul 15, 21:30 UTC4h 0m
2026-07-15 TUI3C - Jul 15, 11:45 UTCJul 15, 16:15 UTC4h 30m
2026-07-15 TUI5ME - Jul 15, 08:00 UTCJul 15, 10:35 UTC2h 35m
2026-07-15 TUI50K MUC → KGS Jul 15, 04:05 UTCJul 15, 06:30 UTC2h 25m
2026-07-14 TUI3PX FNC → MUC Jul 14, 17:35 UTCJul 14, 20:55 UTC3h 20m
2026-07-14 TUI85N MUC → FNC Jul 14, 12:10 UTCJul 14, 16:30 UTC4h 20m
2026-07-14 TUI2FC - Jul 14, 08:15 UTCJul 14, 10:40 UTC2h 25m
2026-07-14 TUI87W - Jul 14, 04:15 UTCJul 14, 06:20 UTC2h 5m
2026-07-13 TUI2FC - Jul 13, 15:50 UTCJul 13, 18:20 UTC2h 30m
2026-07-13 TUI87W - Jul 13, 12:05 UTCJul 13, 14:15 UTC2h 10m
2026-07-13 TUI1TX RHO → MUC Jul 13, 08:05 UTCJul 13, 10:55 UTC2h 50m
2026-07-13 TUI45C MUC → RHO Jul 13, 04:15 UTCJul 13, 06:40 UTC2h 25m
2026-07-12 TUI3PX - Jul 12, 17:50 UTCJul 12, 20:35 UTC2h 45m

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

Mode-S 3C0CA3 frequently asked

What is Mode-S code 3C0CA3?
3C0CA3 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ATUK.
Where is Mode-S 3C0CA3 registered?
Mode-S code 3C0CA3 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C0CA3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C0CA3, octal 17006243, decimal 3,935,395.
What flights does 3C0CA3 operate?
Mode-S 3C0CA3 has broadcast 20 distinct callsigns, including TUI1A, TUI87W, TUI3MC, TUI7KT, TUI6HA.