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
Broadcasting now · callsign TGZ937 · 13,825 ft
Flights observed
117
Distinct callsigns
9
Country
GE
Last broadcast
1h ago

Current position

51403F is currently broadcasting. Map zoomed to live position.

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 9 distinct

Callsign Airline Flights Last seen
TGZ723 - 37 2026-07-13
TGZ724 - 35 2026-07-13
TGZ937 - 12 2026-07-12
TGZ505 - 11 2026-07-14
TGZ506 - 10 2026-07-12
TGZ938 - 9 2026-07-12
TGZ746 Georgian Airways 1 2026-05-29
TGZ732 Georgian Airways 1 2026-05-31
TGZ731 Georgian Airways 1 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TGZ505 - Jul 14, 05:15 UTCJul 14, 05:45 UTC30m
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
2026-07-12 TGZ937 - Jul 12, 10:10 UTCJul 12, 11:01 UTC50m
2026-07-12 TGZ937 - Jul 12, 07:01 UTCJul 12, 09:05 UTC2h 5m
2026-07-12 TGZ505 TBS → BUS Jul 12, 05:15 UTCJul 12, 05:50 UTC35m
2026-07-11 TGZ506 BUS → TBS Jul 11, 15:25 UTCJul 11, 16:00 UTC35m
2026-07-11 TGZ938 - Jul 11, 11:10 UTCJul 11, 14:20 UTC3h 10m
2026-07-11 TGZ937 - Jul 11, 07:00 UTCJul 11, 09:40 UTC2h 40m
2026-07-11 TGZ505 TBS → BUS Jul 11, 05:10 UTCJul 11, 05:45 UTC35m
2026-07-10 TGZ724 - Jul 10, 05:55 UTCJul 10, 06:20 UTC25m
2026-07-10 TGZ723 - Jul 10, 04:25 UTCJul 10, 04:45 UTC20m
2026-07-09 TGZ506 BUS → TBS Jul 9, 16:20 UTCJul 9, 16:55 UTC35m
2026-07-09 TGZ938 - Jul 9, 12:25 UTCJul 9, 15:30 UTC3h 5m
2026-07-09 TGZ937 - Jul 9, 07:35 UTCJul 9, 11:05 UTC3h 30m
2026-07-09 TGZ505 TBS → BUS Jul 9, 05:15 UTCJul 9, 05:50 UTC35m
2026-07-08 TGZ724 - Jul 8, 05:50 UTCJul 8, 06:15 UTC25m
2026-07-08 TGZ723 - Jul 8, 04:25 UTCJul 8, 04:45 UTC20m
2026-07-07 TGZ506 BUS → TBS Jul 7, 19:35 UTCJul 7, 20:10 UTC35m
2026-07-07 TGZ938 - Jul 7, 15:20 UTCJul 7, 18:40 UTC3h 20m
2026-07-07 TGZ937 - Jul 7, 09:55 UTCJul 7, 10:30 UTC35m
2026-07-07 TGZ937 - Jul 7, 06:30 UTCJul 7, 08:40 UTC2h 10m
2026-07-07 TGZ505 TBS → BUS Jul 7, 04:30 UTCJul 7, 05:05 UTC35m
2026-07-06 TGZ724 - Jul 6, 06:10 UTCJul 6, 06:25 UTC15m
2026-07-06 TGZ723 - Jul 6, 04:30 UTCJul 6, 04:50 UTC20m
2026-07-05 TGZ506 - Jul 5, 16:10 UTCJul 5, 16:45 UTC35m
2026-07-05 TGZ938 - Jul 5, 11:30 UTCJul 5, 15:15 UTC3h 45m
2026-07-05 TGZ937 - Jul 5, 07:10 UTCJul 5, 10:15 UTC3h 5m
2026-07-05 TGZ505 TBS → BUS Jul 5, 05:00 UTCJul 5, 05:35 UTC35m
2026-07-04 TGZ506 BUS → TBS Jul 4, 15:40 UTCJul 4, 16:15 UTC35m
2026-07-04 TGZ938 - Jul 4, 11:15 UTCJul 4, 14:15 UTC3h 0m
2026-07-04 TGZ937 - Jul 4, 06:35 UTCJul 4, 09:25 UTC2h 50m
2026-07-04 TGZ505 TBS → BUS Jul 4, 05:00 UTCJul 4, 05:35 UTC35m
2026-07-03 TGZ724 - Jul 3, 05:50 UTCJul 3, 06:10 UTC20m
2026-07-03 TGZ723 - Jul 3, 04:25 UTCJul 3, 04:45 UTC20m
2026-07-02 TGZ506 BUS → TBS Jul 2, 15:25 UTCJul 2, 15:55 UTC30m
2026-07-02 TGZ938 - Jul 2, 11:20 UTCJul 2, 14:05 UTC2h 45m
2026-07-02 TGZ937 - Jul 2, 06:55 UTCJul 2, 09:55 UTC3h 0m
2026-07-02 TGZ505 TBS → BUS Jul 2, 05:10 UTCJul 2, 05:45 UTC35m
2026-07-01 TGZ724 - Jul 1, 06:00 UTCJul 1, 06:15 UTC15m
2026-07-01 TGZ723 - Jul 1, 04:30 UTCJul 1, 04:45 UTC15m
2026-06-30 TGZ506 BUS → TBS Jun 30, 15:20 UTCJun 30, 16:00 UTC40m
2026-06-30 TGZ938 - Jun 30, 11:20 UTCJun 30, 14:20 UTC3h 0m
2026-06-30 TGZ937 - Jun 30, 06:50 UTCJun 30, 09:55 UTC3h 5m
2026-06-30 TGZ505 TBS → BUS Jun 30, 05:05 UTCJun 30, 05:40 UTC35m
2026-06-29 TGZ724 - Jun 29, 05:50 UTCJun 29, 06:09 UTC20m
2026-06-29 TGZ723 - Jun 29, 04:30 UTCJun 29, 04:50 UTC20m
2026-06-28 TGZ506 BUS → TBS Jun 28, 15:34 UTCJun 28, 16:14 UTC40m

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?
Yes. Mode-S 51403F is currently airborne.
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 9 distinct callsigns, including TGZ723, TGZ724, TGZ937, TGZ505, TGZ506.