Apparatus

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sensors Mode-S transponder

51403F

ICAO 24-bit transponder address · allocated to Georgia

Currently assigned to 4L-TGI · BOEING 737-500

Hex
51403F
Octal
24240077
Decimal
5,324,863
Country
GE
Tail
4L-TGI
Type
B735
No current signal · last broadcast 6h ago
Flights observed
39
Distinct callsigns
3
Country
GE
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 51403F.

Country allocation

The ICAO 24-bit address 51403F 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 3 distinct

Callsign Airline Flights Last seen
TGZ724 Georgian Airways 19 2026-05-29
TGZ723 Georgian Airways 19 2026-05-29
TGZ745 Georgian Airways 1 2026-05-29

Recent flights last 39

DateFlightRouteTakeoffLandingDuration
2026-05-29 TGZ745 TBS → OVB May 29, 18:50 UTCMay 29, 19:10 UTC20m
2026-05-29 TGZ724 EVN → TBS May 29, 05:55 UTCMay 29, 06:15 UTC20m
2026-05-29 TGZ723 TBS → EVN May 29, 04:30 UTCMay 29, 04:50 UTC20m
2026-05-27 TGZ724 EVN → TBS May 27, 04:34 UTCMay 27, 04:55 UTC20m
2026-05-27 TGZ723 TBS → EVN May 27, 02:54 UTCMay 27, 03:09 UTC15m
2026-05-25 TGZ724 EVN → TBS May 25, 09:30 UTCMay 25, 09:50 UTC20m
2026-05-25 TGZ723 TBS → EVN May 25, 04:25 UTCMay 25, 04:45 UTC20m
2026-05-22 TGZ724 EVN → TBS May 22, 05:50 UTCMay 22, 06:30 UTC40m
2026-05-22 TGZ723 TBS → EVN May 22, 04:25 UTCMay 22, 04:45 UTC20m
2026-05-20 TGZ724 EVN → TBS May 20, 05:50 UTCMay 20, 06:15 UTC25m
2026-05-20 TGZ723 TBS → EVN May 20, 04:30 UTCMay 20, 04:45 UTC16m
2026-05-18 TGZ724 EVN → TBS May 18, 05:55 UTCMay 18, 06:20 UTC25m
2026-05-18 TGZ723 TBS → EVN May 18, 04:20 UTCMay 18, 04:40 UTC20m
2026-05-15 TGZ724 EVN → TBS May 15, 05:45 UTCMay 15, 06:05 UTC20m
2026-05-15 TGZ723 TBS → EVN May 15, 04:15 UTCMay 15, 04:30 UTC15m
2026-05-13 TGZ724 EVN → TBS May 13, 05:45 UTCMay 13, 06:10 UTC25m
2026-05-13 TGZ723 TBS → EVN May 13, 04:20 UTCMay 13, 04:35 UTC15m
2026-05-11 TGZ724 EVN → TBS May 11, 05:00 UTCMay 11, 05:20 UTC20m
2026-05-11 TGZ723 TBS → EVN May 11, 03:45 UTCMay 11, 04:05 UTC20m
2026-05-08 TGZ724 EVN → TBS May 8, 05:44 UTCMay 8, 06:09 UTC25m
2026-05-08 TGZ723 TBS → EVN May 8, 04:25 UTCMay 8, 04:44 UTC20m
2026-05-06 TGZ724 EVN → TBS May 6, 05:45 UTCMay 6, 06:05 UTC20m
2026-05-06 TGZ723 TBS → EVN May 6, 04:15 UTCMay 6, 04:35 UTC20m
2026-05-04 TGZ724 EVN → TBS May 4, 05:55 UTCMay 4, 06:15 UTC20m
2026-05-04 TGZ723 TBS → EVN May 4, 04:29 UTCMay 4, 04:50 UTC20m
2026-05-01 TGZ724 EVN → TBS May 1, 05:45 UTCMay 1, 06:10 UTC25m
2026-05-01 TGZ723 TBS → EVN May 1, 04:20 UTCMay 1, 04:40 UTC20m
2026-04-29 TGZ724 EVN → TBS Apr 29, 05:40 UTCApr 29, 06:05 UTC25m
2026-04-29 TGZ723 TBS → EVN Apr 29, 04:20 UTCApr 29, 04:39 UTC20m
2026-04-24 TGZ724 EVN → TBS Apr 24, 06:25 UTCApr 24, 06:50 UTC25m
2026-04-24 TGZ723 TBS → EVN Apr 24, 03:30 UTCApr 24, 03:55 UTC25m
2026-04-22 TGZ724 EVN → TBS Apr 22, 06:15 UTCApr 22, 06:40 UTC25m
2026-04-22 TGZ723 TBS → EVN Apr 22, 04:50 UTCApr 22, 05:05 UTC15m
2026-04-17 TGZ724 EVN → TBS Apr 17, 05:45 UTCApr 17, 06:05 UTC20m
2026-04-17 TGZ723 TBS → EVN Apr 17, 04:25 UTCApr 17, 04:45 UTC21m
2026-04-15 TGZ724 EVN → TBS Apr 15, 05:40 UTCApr 15, 06:00 UTC20m
2026-04-15 TGZ723 TBS → EVN Apr 15, 04:15 UTCApr 15, 04:35 UTC20m
2026-04-13 TGZ724 EVN → TBS Apr 13, 05:50 UTCApr 13, 06:05 UTC15m
2026-04-13 TGZ723 - Apr 13, 04:35 UTCApr 13, 04:55 UTC20m

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

Mode-S 51403F frequently asked

What is Mode-S code 51403F?
51403F is an ICAO 24-bit transponder address. Allocated to Georgia. Assigned to 4L-TGI.
Where is Mode-S 51403F registered?
Mode-S code 51403F is allocated to Georgia (GE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 51403F broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 51403F, octal 24240077, decimal 5,324,863.
What flights does 51403F operate?
Mode-S 51403F has broadcast 3 distinct callsigns, including TGZ724, TGZ723, TGZ745.