sensors Mode-S transponder

4BB859

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-NBY · AIRBUS A-320neo

Hex
4BB859
Octal
22734131
Decimal
4,962,393
Country
TR
Tail
TC-NBY
Type
A20N
Broadcasting now · callsign PGT1862 · 19,800 ft
Flights observed
11
Distinct callsigns
11
Country
TR
Last broadcast
19h ago

Current position

4BB859 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4BB859 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 11 distinct

Callsign Airline Flights Last seen
PGT7003 - 1 2026-04-14
PGT1982 - 1 2026-04-13
PGT1981 - 1 2026-04-13
PGT1942 - 1 2026-04-13
PGT1941 - 1 2026-04-13
PGT1891 - 1 2026-04-13
PGT1885 - 1 2026-04-13
PGT1883 - 1 2026-04-13
PGT1867 - 1 2026-04-12
PGT1864 - 1 2026-04-14
PGT1863 - 1 2026-04-14

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 PGT7003 - Apr 14, 10:10 UTCApr 14, 10:30 UTC20m
2026-04-14 PGT1864 - Apr 14, 08:05 UTCApr 14, 09:00 UTC55m
2026-04-14 PGT1863 - Apr 14, 06:00 UTCApr 14, 06:55 UTC55m
2026-04-13 PGT1885 - Apr 13, 19:45 UTCApr 13, 20:10 UTC25m
2026-04-13 PGT1883 - Apr 13, 16:20 UTCApr 13, 19:00 UTC2h 40m
2026-04-13 PGT1891 - Apr 13, 12:45 UTCApr 13, 15:15 UTC2h 30m
2026-04-13 PGT1982 - Apr 13, 09:05 UTCApr 13, 10:10 UTC1h 5m
2026-04-13 PGT1981 - Apr 13, 06:25 UTCApr 13, 07:05 UTC40m
2026-04-13 PGT1942 - Apr 13, 05:05 UTCApr 13, 05:30 UTC25m
2026-04-13 PGT1941 - Apr 13, 02:55 UTCApr 13, 03:20 UTC25m
2026-04-12 PGT1867 - Apr 12, 18:25 UTCApr 12, 19:30 UTC1h 5m

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

Mode-S 4BB859 frequently asked

What is Mode-S code 4BB859?
4BB859 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-NBY.
Where is Mode-S 4BB859 registered?
Mode-S code 4BB859 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB859 broadcasting right now?
Yes. Mode-S 4BB859 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB859, octal 22734131, decimal 4,962,393.
What flights does 4BB859 operate?
Mode-S 4BB859 has broadcast 11 distinct callsigns, including PGT7003, PGT1982, PGT1981, PGT1942, PGT1941.