sensors Mode-S transponder

4BCDAB

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-SMK · BOEING 737 MAX 8

Hex
4BCDAB
Octal
22746653
Decimal
4,967,851
Country
TR
Tail
TC-SMK
Type
B38M
Broadcasting now · callsign SXS14E · 37,000 ft
Flights observed
12
Distinct callsigns
5
Country
TR
Last broadcast
14h ago

Current position

4BCDAB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4BCDAB 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 5 distinct

Callsign Airline Flights Last seen
SXS8NU - 3 2026-04-14
SXS2VN SunExpress 3 2026-04-13
SXS1JM - 3 2026-04-13
SXS4WM - 2 2026-04-13
SXS8JE - 1 2026-04-12

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 SXS8NU - Apr 14, 09:10 UTCApr 14, 10:20 UTC1h 10m
2026-04-14 SXS8NU - Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 SXS8NU - Apr 14, 05:30 UTCApr 14, 07:10 UTC1h 40m
2026-04-13 SXS4WM - Apr 13, 19:50 UTCApr 13, 22:35 UTC2h 45m
2026-04-13 SXS4WM - Apr 13, 19:15 UTCApr 13, 20:10 UTC55m
2026-04-13 SXS1JM - Apr 13, 12:20 UTCApr 13, 15:20 UTC3h 0m
2026-04-13 SXS1JM - Apr 13, 11:55 UTCApr 13, 15:20 UTC3h 25m
2026-04-13 SXS1JM - Apr 13, 11:40 UTCApr 13, 12:15 UTC35m
2026-04-13 SXS2VN AYT → LGW Apr 13, 08:20 UTCApr 13, 10:25 UTC2h 5m
2026-04-13 SXS2VN AYT → LGW Apr 13, 07:55 UTCApr 13, 10:25 UTC2h 30m
2026-04-13 SXS2VN AYT → LGW Apr 13, 06:15 UTCApr 13, 08:15 UTC2h 0m
2026-04-12 SXS8JE - Apr 12, 17:15 UTCApr 12, 19:45 UTC2h 30m

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

Mode-S 4BCDAB frequently asked

What is Mode-S code 4BCDAB?
4BCDAB is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-SMK.
Where is Mode-S 4BCDAB registered?
Mode-S code 4BCDAB is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BCDAB broadcasting right now?
Yes. Mode-S 4BCDAB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BCDAB, octal 22746653, decimal 4,967,851.
What flights does 4BCDAB operate?
Mode-S 4BCDAB has broadcast 5 distinct callsigns, including SXS8NU, SXS2VN, SXS1JM, SXS4WM, SXS8JE.