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sensors Mode-S transponder

4BD6A4

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-UUD · AIRPLANE FACTORY Sling 2

Hex
4BD6A4
Octal
22753244
Decimal
4,970,148
Country
TR
Tail
TC-UUD
Type
SLG2
No current signal · last broadcast 1d ago
Flights observed
78
Distinct callsigns
1
Country
TR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4BD6A4.

Country allocation

The ICAO 24-bit address 4BD6A4 falls within the block assigned to Turkey (TR) by ICAO Annex 10, Volume III. Every aircraft registered in Turkey 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 1 distinct

Callsign Airline Flights Last seen
TCUUD - 78 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 TCUUD - Jul 18, 07:55 UTCJul 18, 09:20 UTC1h 25m
2026-07-18 TCUUD - Jul 18, 06:50 UTCJul 18, 07:00 UTC10m
2026-07-18 TCUUD - Jul 18, 05:40 UTCJul 18, 05:50 UTC10m
2026-07-17 TCUUD - Jul 17, 15:05 UTCJul 17, 16:10 UTC1h 5m
2026-07-17 TCUUD - Jul 17, 13:15 UTCJul 17, 14:20 UTC1h 5m
2026-07-17 TCUUD - Jul 17, 10:55 UTCJul 17, 12:10 UTC1h 15m
2026-07-17 TCUUD - Jul 17, 05:25 UTCJul 17, 06:35 UTC1h 10m
2026-07-15 TCUUD - Jul 15, 09:55 UTCJul 15, 10:35 UTC40m
2026-07-14 TCUUD - Jul 14, 11:35 UTCJul 14, 12:45 UTC1h 10m
2026-07-14 TCUUD - Jul 14, 09:20 UTCJul 14, 10:30 UTC1h 10m
2026-07-14 TCUUD - Jul 14, 07:15 UTCJul 14, 08:25 UTC1h 10m
2026-07-13 TCUUD - Jul 13, 10:20 UTCJul 13, 12:05 UTC1h 45m
2026-07-13 TCUUD - Jul 13, 07:30 UTCJul 13, 09:10 UTC1h 40m
2026-07-13 TCUUD - Jul 13, 05:01 UTCJul 13, 05:10 UTC10m
2026-07-10 TCUUD - Jul 10, 12:00 UTCJul 10, 13:10 UTC1h 10m
2026-07-10 TCUUD - Jul 10, 10:00 UTCJul 10, 11:15 UTC1h 15m
2026-07-10 TCUUD - Jul 10, 08:50 UTCJul 10, 09:00 UTC10m
2026-07-10 TCUUD - Jul 10, 07:40 UTCJul 10, 08:20 UTC40m
2026-07-10 TCUUD - Jul 10, 05:45 UTCJul 10, 06:15 UTC30m
2026-07-07 TCUUD - Jul 7, 10:20 UTCJul 7, 11:40 UTC1h 20m
2026-07-07 TCUUD - Jul 7, 07:55 UTCJul 7, 08:05 UTC10m
2026-07-07 TCUUD - Jul 7, 05:35 UTCJul 7, 06:25 UTC50m
2026-07-06 TCUUD - Jul 6, 14:50 UTCJul 6, 15:30 UTC40m
2026-07-06 TCUUD - Jul 6, 13:50 UTCJul 6, 14:15 UTC25m
2026-07-06 TCUUD - Jul 6, 11:25 UTCJul 6, 12:50 UTC1h 25m
2026-07-05 TCUUD - Jul 5, 15:10 UTCJul 5, 16:05 UTC55m
2026-07-05 TCUUD - Jul 5, 13:15 UTCJul 5, 13:35 UTC20m
2026-07-05 TCUUD - Jul 5, 10:35 UTCJul 5, 11:45 UTC1h 10m
2026-07-05 TCUUD - Jul 5, 08:15 UTCJul 5, 09:30 UTC1h 15m
2026-07-03 TCUUD - Jul 3, 12:50 UTCJul 3, 14:10 UTC1h 20m
2026-07-03 TCUUD - Jul 3, 10:35 UTCJul 3, 11:50 UTC1h 15m
2026-07-03 TCUUD - Jul 3, 08:30 UTCJul 3, 09:50 UTC1h 20m
2026-07-02 TCUUD - Jul 2, 08:20 UTCJul 2, 08:50 UTC30m
2026-07-02 TCUUD - Jul 2, 06:15 UTCJul 2, 06:25 UTC10m
2026-07-01 TCUUD - Jul 1, 10:55 UTCJul 1, 12:00 UTC1h 5m
2026-06-28 TCUUD - Jun 28, 11:14 UTCJun 28, 11:25 UTC10m
2026-06-28 TCUUD - Jun 28, 08:55 UTCJun 28, 09:30 UTC35m
2026-06-25 TCUUD - Jun 25, 08:24 UTCJun 25, 08:55 UTC30m
2026-06-25 TCUUD - Jun 25, 05:20 UTCJun 25, 06:14 UTC55m
2026-06-24 TCUUD - Jun 24, 14:34 UTCJun 24, 15:14 UTC40m
2026-06-24 TCUUD - Jun 24, 11:50 UTCJun 24, 12:25 UTC35m
2026-06-24 TCUUD - Jun 24, 10:49 UTCJun 24, 11:14 UTC25m
2026-06-24 TCUUD - Jun 24, 08:30 UTCJun 24, 09:45 UTC1h 15m
2026-06-24 TCUUD - Jun 24, 06:35 UTCJun 24, 07:50 UTC1h 15m
2026-06-23 TCUUD - Jun 23, 08:35 UTCJun 23, 08:45 UTC10m
2026-06-23 TCUUD - Jun 23, 07:19 UTCJun 23, 08:04 UTC45m
2026-06-23 TCUUD - Jun 23, 06:15 UTCJun 23, 06:24 UTC10m
2026-06-23 TCUUD - Jun 23, 05:09 UTCJun 23, 05:20 UTC10m
2026-06-19 TCUUD - Jun 19, 06:04 UTCJun 19, 07:19 UTC1h 15m
2026-06-18 TCUUD - Jun 18, 10:35 UTCJun 18, 10:50 UTC15m

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 TC-UUD page for operator, model, and routing details .

Mode-S 4BD6A4 frequently asked

What is Mode-S code 4BD6A4?
4BD6A4 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-UUD.
Where is Mode-S 4BD6A4 registered?
Mode-S code 4BD6A4 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BD6A4 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BD6A4, octal 22753244, decimal 4,970,148.
What flights does 4BD6A4 operate?
Mode-S 4BD6A4 has broadcast 1 distinct callsign, including TCUUD.