Apparatus

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sensors Mode-S transponder

51408C

ICAO 24-bit transponder address · allocated to Georgia

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

Hex
51408C
Octal
24240214
Decimal
5,324,940
Country
GE
Tail
4L-GTI
Type
B737
No current signal · last broadcast 16h ago
Flights observed
131
Distinct callsigns
20
Country
GE
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 51408C.

Country allocation

The ICAO 24-bit address 51408C 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 20 distinct

Callsign Airline Flights Last seen
TGZ731 - 13 2026-07-10
TGZ683 - 13 2026-07-13
TGZ684 Georgian Airways 12 2026-07-13
TGZ782 Georgian Airways 11 2026-07-04
TGZ732 Georgian Airways 11 2026-07-07
TGZ745 Georgian Airways 10 2026-07-13
TGZ781 - 8 2026-07-04
TGZ785 - 7 2026-07-09
TGZ682 Georgian Airways 7 2026-07-05
TGZ652 Georgian Airways 7 2026-05-30
TGZ681 - 6 2026-07-05
TGZ651 Georgian Airways 5 2026-05-30
TGZ786 - 4 2026-07-03
TGZ773 Georgian Airways 4 2026-06-16
TGZ774 Georgian Airways 3 2026-06-16
TGZ746 Georgian Airways 3 2026-06-20
TGZ724 - 2 2026-06-15
TGZ723 Georgian Airways 2 2026-06-15
TGZ2779 - 2 2026-07-02
TGZ932 Georgian Airways 1 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 TGZ745 TBS → OVB Jul 13, 18:45 UTCJul 13, 19:10 UTC25m
2026-07-13 TGZ684 FCO → TBS Jul 13, 17:15 UTCJul 13, 17:25 UTC10m
2026-07-13 TGZ684 FCO → TBS Jul 13, 14:10 UTCJul 13, 16:15 UTC2h 5m
2026-07-13 TGZ683 TBS → FCO Jul 13, 08:05 UTCJul 13, 12:05 UTC4h 0m
2026-07-10 TGZ731 - Jul 10, 07:40 UTCJul 10, 08:50 UTC1h 10m
2026-07-09 TGZ785 - Jul 9, 20:35 UTCJul 9, 20:55 UTC20m
2026-07-07 TGZ785 - Jul 7, 21:00 UTCJul 7, 21:15 UTC15m
2026-07-07 TGZ732 BGY → TBS Jul 7, 16:40 UTCJul 7, 16:45 UTC5m
2026-07-07 TGZ732 BGY → TBS Jul 7, 13:10 UTCJul 7, 15:30 UTC2h 20m
2026-07-07 TGZ731 - Jul 7, 07:50 UTCJul 7, 11:50 UTC4h 0m
2026-07-06 TGZ684 FCO → TBS Jul 6, 14:40 UTCJul 6, 16:40 UTC2h 0m
2026-07-06 TGZ683 - Jul 6, 08:35 UTCJul 6, 12:35 UTC4h 0m
2026-07-05 TGZ682 VIE → TBS Jul 5, 14:30 UTCJul 5, 16:10 UTC1h 40m
2026-07-05 TGZ681 TBS → VIE Jul 5, 09:45 UTCJul 5, 13:15 UTC3h 30m
2026-07-04 TGZ782 BER → TBS Jul 4, 13:25 UTCJul 4, 15:30 UTC2h 5m
2026-07-04 TGZ781 TBS → BER Jul 4, 07:50 UTCJul 4, 11:50 UTC4h 0m
2026-07-03 TGZ745 TBS → OVB Jul 3, 18:50 UTCJul 3, 19:15 UTC25m
2026-07-03 TGZ786 - Jul 3, 04:35 UTCJul 3, 04:50 UTC15m
2026-07-02 TGZ785 - Jul 2, 20:50 UTCJul 2, 21:10 UTC20m
2026-07-02 TGZ2779 - Jul 2, 06:15 UTCJul 2, 07:20 UTC1h 5m
2026-07-01 TGZ684 FCO → TBS Jul 1, 13:45 UTCJul 1, 16:00 UTC2h 15m
2026-07-01 TGZ683 - Jul 1, 08:15 UTCJul 1, 09:20 UTC1h 5m
2026-07-01 TGZ786 - Jul 1, 04:45 UTCJul 1, 04:50 UTC5m
2026-06-30 TGZ785 - Jun 30, 20:40 UTCJun 30, 21:05 UTC25m
2026-06-30 TGZ731 - Jun 30, 07:45 UTCJun 30, 08:50 UTC1h 5m
2026-06-29 TGZ684 FCO → TBS Jun 29, 17:05 UTCJun 29, 17:19 UTC15m
2026-06-29 TGZ684 FCO → TBS Jun 29, 13:54 UTCJun 29, 16:04 UTC2h 10m
2026-06-29 TGZ683 - Jun 29, 08:09 UTCJun 29, 12:14 UTC4h 5m
2026-06-27 TGZ782 BER → TBS Jun 27, 13:35 UTCJun 27, 15:55 UTC2h 20m
2026-06-27 TGZ781 TBS → BER Jun 27, 07:49 UTCJun 27, 11:50 UTC4h 0m
2026-06-22 TGZ745 TBS → OVB Jun 22, 18:44 UTCJun 23, 04:55 UTC10h 10m
2026-06-21 TGZ732 BGY → TBS Jun 21, 13:09 UTCJun 21, 15:25 UTC2h 15m
2026-06-21 TGZ731 - Jun 21, 07:49 UTCJun 21, 11:49 UTC4h 0m
2026-06-20 TGZ782 BER → TBS Jun 20, 17:24 UTCJun 20, 17:39 UTC15m
2026-06-20 TGZ781 TBS → BER Jun 20, 07:39 UTCJun 20, 08:49 UTC1h 10m
2026-06-20 TGZ746 OVB → TBS Jun 20, 04:29 UTCJun 20, 04:39 UTC10m
2026-06-19 TGZ745 TBS → OVB Jun 19, 18:39 UTCJun 19, 19:04 UTC25m
2026-06-17 TGZ683 - Jun 17, 08:10 UTCJun 17, 09:10 UTC1h 0m
2026-06-16 TGZ774 LCA → TBS Jun 16, 19:45 UTCJun 16, 21:20 UTC1h 36m
2026-06-16 TGZ773 TBS → LCA Jun 16, 16:35 UTCJun 16, 18:25 UTC1h 50m
2026-06-15 TGZ724 - Jun 15, 06:20 UTCJun 15, 06:45 UTC25m
2026-06-15 TGZ723 TBS → EVN Jun 15, 04:45 UTCJun 15, 05:00 UTC15m
2026-06-14 TGZ682 VIE → TBS Jun 14, 17:15 UTCJun 14, 17:30 UTC15m
2026-06-14 TGZ682 VIE → TBS Jun 14, 14:30 UTCJun 14, 16:05 UTC1h 35m
2026-06-14 TGZ681 TBS → VIE Jun 14, 09:30 UTCJun 14, 13:10 UTC3h 40m
2026-06-13 TGZ782 BER → TBS Jun 13, 13:25 UTCJun 13, 15:35 UTC2h 10m
2026-06-13 TGZ781 TBS → BER Jun 13, 07:45 UTCJun 13, 11:50 UTC4h 5m
2026-06-12 TGZ745 TBS → OVB Jun 12, 19:25 UTCJun 12, 20:25 UTC1h 0m
2026-06-12 TGZ724 - Jun 12, 05:50 UTCJun 12, 06:15 UTC25m
2026-06-12 TGZ723 TBS → EVN Jun 12, 04:20 UTCJun 12, 04:40 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-GTI page for operator, model, and routing details .

Mode-S 51408C frequently asked

What is Mode-S code 51408C?
51408C is an ICAO 24-bit transponder address. Allocated to Georgia. Assigned to 4L-GTI.
Where is Mode-S 51408C registered?
Mode-S code 51408C is allocated to Georgia (GE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 51408C broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 51408C, octal 24240214, decimal 5,324,940.
What flights does 51408C operate?
Mode-S 51408C has broadcast 20 distinct callsigns, including TGZ731, TGZ683, TGZ684, TGZ782, TGZ732.