Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3C743A

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AMAZ · BOEING 737 MAX 8

Hex
3C743A
Octal
17072072
Decimal
3,961,914
Country
DE
Tail
D-AMAZ
Type
B38M
Broadcasting now · callsign TUI5GY · 37,000 ft
Flights observed
300
Distinct callsigns
20
Country
DE
Last broadcast
1h ago

Current position

3C743A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C743A 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
TUI3WL - 10 2026-07-13
TUI1KN - 10 2026-07-13
TUI7WT TUIfly 9 2026-05-30
TUI5HJ - 9 2026-07-01
TUI1AG - 9 2026-07-01
TUI9WT TUIfly 7 2026-05-11
TUI7KT - 7 2026-07-11
TUI3MC - 7 2026-07-11
TUI2B - 7 2026-06-27
TUI7VB TUIfly 6 2026-05-16
TUI6MB TUIfly 6 2026-05-14
TUI6G TUIfly 6 2026-06-27
TUI3YJ - 6 2026-07-14
TUI2EA TUIfly 6 2026-05-16
TUI18H TUIfly 6 2026-05-14
TUI97A TUIfly 5 2026-04-17
TUI7LE - 5 2026-04-15
TUI58V - 5 2026-07-14
TUI2GT TUIfly 5 2026-04-15
TUI94G TUIfly 4 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TUI5GY - Jul 14, 12:00 UTCJul 14, 12:30 UTC30m
2026-07-14 TUI58V RHO → FRA Jul 14, 07:20 UTCJul 14, 10:35 UTC3h 15m
2026-07-14 TUI3YJ FRA → RHO Jul 14, 03:10 UTCJul 14, 05:50 UTC2h 40m
2026-07-13 TUI2WD FRA → FRA Jul 13, 10:30 UTCJul 13, 20:00 UTC9h 30m
2026-07-13 TUI1KN - Jul 13, 06:50 UTCJul 13, 08:45 UTC1h 55m
2026-07-13 TUI3WL - Jul 13, 03:50 UTCJul 13, 05:45 UTC1h 55m
2026-07-12 TUI3CT - Jul 12, 17:20 UTCJul 12, 20:40 UTC3h 20m
2026-07-12 TUI5GY - Jul 12, 12:01 UTCJul 12, 15:05 UTC3h 5m
2026-07-12 TUI80L TRS → FRA Jul 12, 08:30 UTCJul 12, 09:35 UTC1h 5m
2026-07-12 TUI5LB - Jul 12, 05:30 UTCJul 12, 06:45 UTC1h 15m
2026-07-11 TUI3MC RHO → DUS Jul 11, 08:50 UTCJul 11, 12:10 UTC3h 20m
2026-07-11 TUI7KT DUS → RHO Jul 11, 04:30 UTCJul 11, 07:25 UTC2h 55m
2026-07-03 TUI4AL - Jul 3, 17:30 UTCJul 3, 20:15 UTC2h 45m
2026-07-03 TUI88V MUC → DLM Jul 3, 14:00 UTCJul 3, 16:10 UTC2h 10m
2026-07-03 TUI96N - Jul 3, 08:50 UTCJul 3, 12:05 UTC3h 15m
2026-07-03 TUI55L - Jul 3, 04:30 UTCJul 3, 07:15 UTC2h 45m
2026-07-01 TUI9XJ - Jul 1, 16:40 UTCJul 1, 20:40 UTC4h 0m
2026-07-01 TUI3LN - Jul 1, 11:20 UTCJul 1, 15:05 UTC3h 45m
2026-07-01 TUI1AG - Jul 1, 07:55 UTCJul 1, 10:05 UTC2h 10m
2026-07-01 TUI5HJ - Jul 1, 04:30 UTCJul 1, 06:25 UTC1h 55m
2026-06-30 TUI1GK - Jun 30, 05:50 UTCJun 30, 16:10 UTC10h 20m
2026-06-29 TUI8NB KGS → DUS Jun 29, 18:34 UTCJun 29, 21:24 UTC2h 50m
2026-06-29 TUI5YT - Jun 29, 14:09 UTCJun 29, 17:19 UTC3h 10m
2026-06-29 TUI3MC RHO → DUS Jun 29, 09:44 UTCJun 29, 12:34 UTC2h 50m
2026-06-29 TUI7KT DUS → RHO Jun 29, 04:20 UTCJun 29, 07:34 UTC3h 15m
2026-06-27 TUI6G LPA → DUS Jun 27, 18:49 UTCJun 27, 21:34 UTC2h 45m
2026-06-27 TUI2B - Jun 27, 11:35 UTCJun 27, 15:34 UTC4h 0m
2026-06-27 TUI1AG - Jun 27, 07:39 UTCJun 27, 09:50 UTC2h 10m
2026-06-27 TUI5HJ - Jun 27, 04:15 UTCJun 27, 06:09 UTC1h 55m
2026-06-26 TUI89H - Jun 26, 19:04 UTCJun 26, 21:55 UTC2h 50m
2026-06-26 TUI6YJ DUS → HER Jun 26, 14:15 UTCJun 26, 17:04 UTC2h 50m
2026-06-26 TUI8EA - Jun 26, 09:00 UTCJun 26, 12:00 UTC3h 0m
2026-06-26 TUI35X - Jun 26, 04:39 UTCJun 26, 07:24 UTC2h 45m
2026-06-25 TUI5NX IBZ → DUS Jun 25, 07:34 UTCJun 25, 09:50 UTC2h 15m
2026-06-25 TUI4DN DUS → IBZ Jun 25, 04:20 UTCJun 25, 06:35 UTC2h 15m
2026-06-24 TUI3LN - Jun 24, 11:09 UTCJun 24, 20:14 UTC9h 5m
2026-06-23 TUI3MC RHO → DUS Jun 23, 08:39 UTCJun 23, 12:05 UTC3h 25m
2026-06-23 TUI7KT DUS → RHO Jun 23, 04:05 UTCJun 23, 06:59 UTC2h 55m
2026-06-22 TUI8NB KGS → DUS Jun 22, 17:50 UTCJun 22, 21:00 UTC3h 10m
2026-06-22 TUI5YT DUS → KGS Jun 22, 13:14 UTCJun 22, 16:10 UTC2h 55m
2026-06-22 TUI3MC RHO → DUS Jun 22, 08:29 UTCJun 22, 11:50 UTC3h 20m
2026-06-22 TUI7KT DUS → RHO Jun 22, 04:04 UTCJun 22, 07:04 UTC3h 0m
2026-06-21 TUI1VK ACE → DUS Jun 21, 17:39 UTCJun 21, 21:24 UTC3h 45m
2026-06-21 TUI6NH - Jun 21, 11:15 UTCJun 21, 14:59 UTC3h 45m
2026-06-21 TUI1AG - Jun 21, 07:29 UTCJun 21, 09:24 UTC1h 55m
2026-06-21 TUI5HJ - Jun 21, 04:10 UTCJun 21, 06:10 UTC2h 0m
2026-06-20 TUI6G LPA → DUS Jun 20, 17:14 UTCJun 20, 21:19 UTC4h 5m
2026-06-20 TUI2B - Jun 20, 11:44 UTCJun 20, 15:39 UTC3h 55m
2026-06-20 TUI1AG - Jun 20, 08:39 UTCJun 20, 10:29 UTC1h 50m
2026-06-20 TUI5HJ - Jun 20, 04:04 UTCJun 20, 06:14 UTC2h 10m

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

Mode-S 3C743A frequently asked

What is Mode-S code 3C743A?
3C743A is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AMAZ.
Where is Mode-S 3C743A registered?
Mode-S code 3C743A is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C743A broadcasting right now?
Yes. Mode-S 3C743A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C743A, octal 17072072, decimal 3,961,914.
What flights does 3C743A operate?
Mode-S 3C743A has broadcast 20 distinct callsigns, including TUI3WL, TUI1KN, TUI7WT, TUI5HJ, TUI1AG.