Apparatus

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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 TUI5AL · 27,500 ft
Flights observed
344
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 18:55 UTC

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 TUIfly 14 2026-07-20
TUI1KN TUIfly 14 2026-07-20
TUI5HJ TUIfly 10 2026-07-23
TUI1AG TUIfly 10 2026-07-23
TUI7WT TUIfly 9 2026-05-30
TUI7VB - 8 2026-07-18
TUI6MB - 8 2026-07-19
TUI3YJ - 8 2026-07-21
TUI2EA TUIfly 8 2026-07-18
TUI2B TUIfly 8 2026-07-25
TUI18H TUIfly 8 2026-07-19
TUI9WT TUIfly 7 2026-05-11
TUI7KT - 7 2026-07-11
TUI6G TUIfly 7 2026-07-25
TUI58V - 7 2026-07-21
TUI3MC - 7 2026-07-11
TUI3BH TUIfly 6 2026-07-26
TUI97A TUIfly 5 2026-04-17
TUI8EA TUIfly 5 2026-07-24
TUI7LE - 5 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TUI3BH DUS → BVC Jul 26, 04:25 UTCJul 26, 18:55 UTC14h 31m
2026-07-25 TUI6G LPA → DUS Jul 25, 16:50 UTCJul 25, 20:35 UTC3h 45m
2026-07-25 TUI2B DUS → LPA Jul 25, 11:00 UTCJul 25, 14:45 UTC3h 45m
2026-07-25 TUI21W PMI → DUS Jul 25, 07:35 UTCJul 25, 09:35 UTC2h 0m
2026-07-25 TUI5AL DUS → PMI Jul 25, 04:15 UTCJul 25, 06:15 UTC2h 0m
2026-07-24 TUI4AL GPA → DUS Jul 24, 18:20 UTCJul 24, 21:00 UTC2h 40m
2026-07-24 TUI88V - Jul 24, 14:50 UTCJul 24, 16:50 UTC2h 0m
2026-07-24 TUI8EA HER → DUS Jul 24, 09:25 UTCJul 24, 12:40 UTC3h 15m
2026-07-24 TUI35X DUS → HER Jul 24, 04:55 UTCJul 24, 07:30 UTC2h 35m
2026-07-23 TUI4AW OPO → DUS Jul 23, 15:20 UTCJul 23, 17:40 UTC2h 20m
2026-07-23 TUI6BT DUS → OPO Jul 23, 11:45 UTCJul 23, 13:55 UTC2h 10m
2026-07-23 TUI1AG PMI → DUS Jul 23, 08:00 UTCJul 23, 10:15 UTC2h 15m
2026-07-23 TUI5HJ DUS → PMI Jul 23, 04:35 UTCJul 23, 06:30 UTC1h 55m
2026-07-22 TUI3BH DUS → BVC Jul 22, 04:55 UTCJul 22, 19:05 UTC14h 10m
2026-07-21 TUI3XN FNC → DUS Jul 21, 17:00 UTCJul 21, 20:25 UTC3h 25m
2026-07-21 TUI5GY - Jul 21, 15:30 UTCJul 21, 15:40 UTC10m
2026-07-21 TUI5GY - Jul 21, 11:55 UTCJul 21, 14:45 UTC2h 50m
2026-07-21 TUI58V RHO → FRA Jul 21, 07:05 UTCJul 21, 10:15 UTC3h 10m
2026-07-21 TUI3YJ FRA → RHO Jul 21, 03:05 UTCJul 21, 05:45 UTC2h 40m
2026-07-20 TUI7TN LPA → FRA Jul 20, 16:30 UTCJul 20, 20:00 UTC3h 30m
2026-07-20 TUI2WD FRA → LPA Jul 20, 10:25 UTCJul 20, 14:35 UTC4h 10m
2026-07-20 TUI1KN PMI → FRA Jul 20, 07:05 UTCJul 20, 08:55 UTC1h 50m
2026-07-20 TUI3WL RHO → DUS Jul 20, 03:45 UTCJul 20, 05:35 UTC1h 50m
2026-07-19 TUI60N LCA → FRA Jul 19, 16:45 UTCJul 19, 20:20 UTC3h 35m
2026-07-19 TUI43E FRA → LCA Jul 19, 12:25 UTCJul 19, 15:35 UTC3h 10m
2026-07-19 TUI6MB - Jul 19, 07:10 UTCJul 19, 09:55 UTC2h 45m
2026-07-19 TUI18H FRA → HER Jul 19, 03:10 UTCJul 19, 05:40 UTC2h 30m
2026-07-18 TUI2EA TFS → FRA Jul 18, 16:40 UTCJul 18, 20:20 UTC3h 40m
2026-07-18 TUI7VB - Jul 18, 10:35 UTCJul 18, 15:00 UTC4h 25m
2026-07-18 TUI1KN PMI → FRA Jul 18, 06:55 UTCJul 18, 08:35 UTC1h 40m
2026-07-18 TUI3WL RHO → DUS Jul 18, 03:40 UTCJul 18, 05:35 UTC1h 55m
2026-07-17 TUI7TN LPA → FRA Jul 17, 16:40 UTCJul 17, 20:20 UTC3h 40m
2026-07-17 TUI2WD FRA → LPA Jul 17, 10:30 UTCJul 17, 14:44 UTC4h 15m
2026-07-17 TUI1KN - Jul 17, 06:50 UTCJul 17, 08:35 UTC1h 45m
2026-07-17 TUI3WL RHO → DUS Jul 17, 03:34 UTCJul 17, 05:20 UTC1h 45m
2026-07-16 TUI58V RHO → FRA Jul 16, 17:35 UTCJul 16, 20:45 UTC3h 10m
2026-07-16 TUI3YJ FRA → RHO Jul 16, 12:55 UTCJul 16, 15:35 UTC2h 40m
2026-07-16 TUI6MB - Jul 16, 07:35 UTCJul 16, 10:35 UTC3h 0m
2026-07-16 TUI18H - Jul 16, 03:20 UTCJul 16, 05:45 UTC2h 25m
2026-07-15 TUI2EA - Jul 15, 16:35 UTCJul 15, 20:10 UTC3h 35m
2026-07-15 TUI7VB - Jul 15, 10:30 UTCJul 15, 14:55 UTC4h 25m
2026-07-15 TUI1KN - Jul 15, 06:50 UTCJul 15, 08:45 UTC1h 55m
2026-07-15 TUI3WL - Jul 15, 03:40 UTCJul 15, 05:25 UTC1h 45m
2026-07-14 TUI3CT FNC → FRA Jul 14, 17:05 UTCJul 14, 20:30 UTC3h 25m
2026-07-14 TUI5GY FRA → FNC Jul 14, 12:00 UTCJul 14, 16:00 UTC4h 0m
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

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, TUI5HJ, TUI1AG, TUI7WT.