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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 Jul 26, 17:05 UTC
Flights observed
162
Distinct callsigns
13
Country
GE
Last broadcast
Jul 26, 17:05 UTC

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 13 distinct

Callsign Airline Flights Last seen
TGZ723 Georgian Airways 42 2026-07-24
TGZ724 Georgian Airways 39 2026-07-24
TGZ937 Georgian Airways 21 2026-07-26
TGZ506 - 18 2026-07-26
TGZ938 Georgian Airways 17 2026-07-26
TGZ505 Georgian Airways 17 2026-07-26
DTG2505 - 2 2026-07-25
TGZ786 - 1 2026-07-15
TGZ785 - 1 2026-07-14
TGZ746 Georgian Airways 1 2026-05-29
TGZ732 Georgian Airways 1 2026-05-31
TGZ731 Georgian Airways 1 2026-05-31
DTG2506 - 1 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TGZ506 BUS → TBS Jul 26, 16:25 UTCJul 26, 16:55 UTC30m
2026-07-26 TGZ938 VKO → BUS Jul 26, 12:05 UTCJul 26, 15:15 UTC3h 10m
2026-07-26 TGZ937 BUS → VKO Jul 26, 06:45 UTCJul 26, 09:25 UTC2h 40m
2026-07-26 TGZ505 TBS → BUS Jul 26, 05:05 UTCJul 26, 05:40 UTC35m
2026-07-25 TGZ506 BUS → TBS Jul 25, 15:50 UTCJul 25, 16:25 UTC35m
2026-07-25 TGZ938 - Jul 25, 11:45 UTCJul 25, 15:00 UTC3h 15m
2026-07-25 TGZ937 BUS → VKO Jul 25, 07:25 UTCJul 25, 10:25 UTC3h 0m
2026-07-25 DTG2505 TBS → BUS Jul 25, 05:30 UTCJul 25, 06:05 UTC35m
2026-07-24 DTG2506 BUS → TBS Jul 24, 18:40 UTCJul 24, 19:20 UTC40m
2026-07-24 DTG2505 TBS → BUS Jul 24, 15:30 UTCJul 24, 16:00 UTC30m
2026-07-24 TGZ724 EVN → TBS Jul 24, 05:50 UTCJul 24, 06:10 UTC20m
2026-07-24 TGZ723 TBS → EVN Jul 24, 04:25 UTCJul 24, 04:45 UTC20m
2026-07-23 TGZ506 - Jul 23, 16:40 UTCJul 23, 17:10 UTC30m
2026-07-23 TGZ938 - Jul 23, 12:50 UTCJul 23, 16:05 UTC3h 15m
2026-07-23 TGZ937 BUS → VKO Jul 23, 07:05 UTCJul 23, 11:15 UTC4h 10m
2026-07-23 TGZ505 TBS → BUS Jul 23, 05:15 UTCJul 23, 05:45 UTC30m
2026-07-22 TGZ723 - Jul 22, 04:20 UTCJul 22, 04:35 UTC15m
2026-07-21 TGZ506 BUS → TBS Jul 21, 15:25 UTCJul 21, 16:00 UTC35m
2026-07-21 TGZ938 - Jul 21, 11:20 UTCJul 21, 14:25 UTC3h 5m
2026-07-21 TGZ937 BUS → VKO Jul 21, 07:05 UTCJul 21, 10:00 UTC2h 55m
2026-07-21 TGZ505 TBS → BUS Jul 21, 05:10 UTCJul 21, 05:45 UTC35m
2026-07-20 TGZ724 - Jul 20, 05:45 UTCJul 20, 06:05 UTC20m
2026-07-20 TGZ723 - Jul 20, 04:10 UTCJul 20, 04:30 UTC20m
2026-07-19 TGZ506 BUS → TBS Jul 19, 15:35 UTCJul 19, 16:10 UTC35m
2026-07-19 TGZ938 - Jul 19, 11:10 UTCJul 19, 14:25 UTC3h 15m
2026-07-19 TGZ937 BUS → VKO Jul 19, 06:50 UTCJul 19, 09:45 UTC2h 55m
2026-07-19 TGZ505 TBS → BUS Jul 19, 05:10 UTCJul 19, 05:45 UTC35m
2026-07-18 TGZ506 BUS → TBS Jul 18, 16:00 UTCJul 18, 16:40 UTC40m
2026-07-18 TGZ938 - Jul 18, 12:05 UTCJul 18, 15:10 UTC3h 5m
2026-07-18 TGZ937 BUS → VKO Jul 18, 10:10 UTCJul 18, 10:45 UTC35m
2026-07-18 TGZ937 BUS → VKO Jul 18, 07:20 UTCJul 18, 09:35 UTC2h 15m
2026-07-18 TGZ505 TBS → BUS Jul 18, 05:20 UTCJul 18, 05:55 UTC35m
2026-07-17 TGZ724 - Jul 17, 06:05 UTCJul 17, 06:25 UTC20m
2026-07-17 TGZ723 - Jul 17, 04:29 UTCJul 17, 04:54 UTC25m
2026-07-16 TGZ506 BUS → TBS Jul 16, 15:45 UTCJul 16, 16:19 UTC35m
2026-07-16 TGZ938 - Jul 16, 11:54 UTCJul 16, 15:05 UTC3h 10m
2026-07-16 TGZ937 - Jul 16, 07:30 UTCJul 16, 10:29 UTC3h 0m
2026-07-16 TGZ505 TBS → BUS Jul 16, 05:20 UTCJul 16, 05:55 UTC35m
2026-07-15 TGZ724 - Jul 15, 07:55 UTCJul 15, 08:10 UTC15m
2026-07-15 TGZ723 - Jul 15, 06:30 UTCJul 15, 06:50 UTC20m
2026-07-15 TGZ786 - Jul 15, 01:55 UTCJul 15, 05:25 UTC3h 30m
2026-07-14 TGZ785 - Jul 14, 21:05 UTCJul 15, 00:30 UTC3h 24m
2026-07-14 TGZ506 BUS → TBS Jul 14, 16:05 UTCJul 14, 16:40 UTC35m
2026-07-14 TGZ938 - Jul 14, 11:50 UTCJul 14, 15:05 UTC3h 15m
2026-07-14 TGZ937 - Jul 14, 07:10 UTCJul 14, 10:35 UTC3h 25m
2026-07-14 TGZ505 TBS → BUS Jul 14, 05:15 UTCJul 14, 05:50 UTC35m
2026-07-13 TGZ724 - Jul 13, 06:01 UTCJul 13, 06:20 UTC20m
2026-07-13 TGZ723 - Jul 13, 04:25 UTCJul 13, 04:45 UTC20m
2026-07-12 TGZ506 BUS → TBS Jul 12, 17:35 UTCJul 12, 18:10 UTC35m
2026-07-12 TGZ938 - Jul 12, 13:15 UTCJul 12, 16:50 UTC3h 35m

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 Jul 26, 17:05 UTC.
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 13 distinct callsigns, including TGZ723, TGZ724, TGZ937, TGZ506, TGZ938.