sensors Mode-S transponder

5140C2

ICAO 24-bit transponder address · allocated to Georgia

Currently assigned to 4L-NIK · BOEING 737-700

Hex
5140C2
Octal
24240302
Decimal
5,324,994
Country
GE
Tail
4L-NIK
Type
B737
No current signal · last broadcast 14h ago
Flights observed
6
Distinct callsigns
4
Country
GE
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 5140C2.

Country allocation

The ICAO 24-bit address 5140C2 falls within the block assigned to Georgia (GE) by ICAO Annex 10, Volume III. Every aircraft registered in Georgia 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 4 distinct

Callsign Airline Flights Last seen
TGZ652 - 3 2026-04-13
TGZ745 - 1 2026-04-13
TGZ731 - 1 2026-04-14
TGZ651 Georgian Airways 1 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 TGZ731 - Apr 14, 07:45 UTCApr 14, 08:45 UTC1h 0m
2026-04-13 TGZ745 - Apr 13, 19:05 UTCApr 13, 19:30 UTC25m
2026-04-13 TGZ652 - Apr 13, 12:20 UTCApr 13, 13:50 UTC1h 30m
2026-04-13 TGZ652 - Apr 13, 11:55 UTCApr 13, 13:50 UTC1h 55m
2026-04-13 TGZ652 - Apr 13, 09:35 UTCApr 13, 12:15 UTC2h 40m
2026-04-13 TGZ651 TBS → AMS Apr 13, 03:05 UTCApr 13, 04:00 UTC55m

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 4L-NIK page for operator, model, and routing details .

Mode-S 5140C2 frequently asked

What is Mode-S code 5140C2?
5140C2 is an ICAO 24-bit transponder address. Allocated to Georgia. Assigned to 4L-NIK.
Where is Mode-S 5140C2 registered?
Mode-S code 5140C2 is allocated to Georgia (GE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 5140C2 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 5140C2, octal 24240302, decimal 5,324,994.
What flights does 5140C2 operate?
Mode-S 5140C2 has broadcast 4 distinct callsigns, including TGZ652, TGZ745, TGZ731, TGZ651.