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
Broadcasting now · callsign TGZ651 · 38,000 ft
Flights observed
65
Distinct callsigns
18
Country
GE
Last broadcast
1h ago

Current position

51408C is currently broadcasting. Map zoomed to live position.

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 18 distinct

Callsign Airline Flights Last seen
TGZ683 Georgian Airways 8 2026-05-27
TGZ731 Georgian Airways 7 2026-05-29
TGZ782 Georgian Airways 6 2026-05-23
TGZ732 Georgian Airways 6 2026-05-29
TGZ684 Georgian Airways 6 2026-05-27
TGZ652 Georgian Airways 5 2026-05-20
TGZ651 Georgian Airways 5 2026-05-30
TGZ745 Georgian Airways 4 2026-05-22
TGZ781 Georgian Airways 3 2026-05-23
TGZ682 Georgian Airways 3 2026-05-24
TGZ681 Georgian Airways 3 2026-05-24
TGZ785 Georgian Airways 2 2026-05-26
TGZ746 Georgian Airways 2 2026-05-15
TGZ932 Georgian Airways 1 2026-05-25
TGZ786 Georgian Airways 1 2026-05-27
TGZ774 Georgian Airways 1 2026-05-12
TGZ773 Georgian Airways 1 2026-05-12
TGZ2779 Georgian Airways 1 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 TGZ651 TBS → AMS May 30, 02:40 UTCMay 30, 05:00 UTC2h 20m
2026-05-29 TGZ732 BGY → TBS May 29, 16:25 UTCMay 29, 16:40 UTC15m
2026-05-29 TGZ731 TBS → BGY May 29, 07:55 UTCMay 29, 08:55 UTC1h 0m
2026-05-27 TGZ684 FCO → TBS May 27, 17:35 UTCMay 27, 17:40 UTC5m
2026-05-27 TGZ684 FCO → TBS May 27, 14:00 UTCMay 27, 16:15 UTC2h 15m
2026-05-27 TGZ683 TBS → FCO May 27, 08:10 UTCMay 27, 11:45 UTC3h 35m
2026-05-27 TGZ786 LED → TBS May 27, 04:34 UTCMay 27, 04:49 UTC15m
2026-05-26 TGZ785 TBS → LED May 26, 21:00 UTCMay 26, 21:20 UTC20m
2026-05-25 TGZ932 TBS → VKO May 25, 19:40 UTCMay 25, 22:25 UTC2h 45m
2026-05-24 TGZ682 VIE → TBS May 24, 17:20 UTCMay 24, 17:30 UTC10m
2026-05-24 TGZ681 TBS → VIE May 24, 09:25 UTCMay 24, 10:20 UTC55m
2026-05-23 TGZ782 BER → TBS May 23, 16:50 UTCMay 23, 17:10 UTC20m
2026-05-23 TGZ782 BER → TBS May 23, 13:25 UTCMay 23, 15:35 UTC2h 10m
2026-05-23 TGZ781 TBS → BER May 23, 07:50 UTCMay 23, 11:35 UTC3h 45m
2026-05-22 TGZ745 TBS → OVB May 22, 18:45 UTCMay 22, 19:10 UTC25m
2026-05-20 TGZ652 AMS → TBS May 20, 14:05 UTCMay 20, 14:25 UTC20m
2026-05-20 TGZ652 AMS → TBS May 20, 10:10 UTCMay 20, 12:55 UTC2h 45m
2026-05-20 TGZ651 TBS → AMS May 20, 03:15 UTCMay 20, 07:50 UTC4h 36m
2026-05-18 TGZ684 FCO → TBS May 18, 13:55 UTCMay 18, 17:25 UTC3h 30m
2026-05-18 TGZ683 TBS → FCO May 18, 08:10 UTCMay 18, 12:05 UTC3h 55m
2026-05-17 TGZ732 BGY → TBS May 17, 16:45 UTCMay 17, 17:01 UTC15m
2026-05-17 TGZ732 BGY → TBS May 17, 13:31 UTCMay 17, 15:31 UTC2h 0m
2026-05-17 TGZ731 TBS → BGY May 17, 08:20 UTCMay 17, 12:25 UTC4h 5m
2026-05-16 TGZ785 TBS → LED May 16, 20:50 UTCMay 16, 21:35 UTC45m
2026-05-16 TGZ782 BER → TBS May 16, 16:10 UTCMay 16, 16:25 UTC15m
2026-05-16 TGZ782 BER → TBS May 16, 13:15 UTCMay 16, 14:55 UTC1h 40m
2026-05-16 TGZ781 TBS → BER May 16, 07:45 UTCMay 16, 11:35 UTC3h 50m
2026-05-15 TGZ746 OVB → TBS May 15, 19:15 UTCMay 16, 04:35 UTC9h 20m
2026-05-13 TGZ652 AMS → TBS May 13, 09:55 UTCMay 13, 12:35 UTC2h 40m
2026-05-13 TGZ651 TBS → AMS May 13, 03:05 UTCMay 13, 04:10 UTC1h 5m
2026-05-12 TGZ774 LCA → TBS May 12, 16:20 UTCMay 12, 18:15 UTC1h 55m
2026-05-12 TGZ773 TBS → LCA May 12, 13:00 UTCMay 12, 14:55 UTC1h 55m
2026-05-10 TGZ682 VIE → TBS May 10, 17:34 UTCMay 10, 17:45 UTC10m
2026-05-10 TGZ682 VIE → TBS May 10, 14:45 UTCMay 10, 16:20 UTC1h 35m
2026-05-10 TGZ681 TBS → VIE May 10, 09:35 UTCMay 10, 10:40 UTC1h 5m
2026-05-10 TGZ681 TBS → VIE May 10, 08:25 UTCMay 10, 08:50 UTC25m
2026-05-09 TGZ782 BER → TBS May 9, 17:30 UTCMay 9, 17:55 UTC25m
2026-05-09 TGZ782 BER → TBS May 9, 13:30 UTCMay 9, 15:35 UTC2h 5m
2026-05-09 TGZ781 TBS → BER May 9, 07:50 UTCMay 9, 08:45 UTC55m
2026-05-08 TGZ745 TBS → OVB May 8, 19:00 UTCMay 9, 04:40 UTC9h 40m
2026-05-04 TGZ683 TBS → FCO May 4, 09:00 UTCMay 4, 10:05 UTC1h 5m
2026-05-03 TGZ732 BGY → TBS May 3, 13:10 UTCMay 3, 15:20 UTC2h 10m
2026-05-03 TGZ731 TBS → BGY May 3, 08:00 UTCMay 3, 11:50 UTC3h 50m
2026-05-01 TGZ745 TBS → OVB May 1, 19:00 UTCMay 1, 19:20 UTC20m
2026-04-24 TGZ746 OVB → TBS Apr 24, 19:05 UTCApr 25, 04:55 UTC9h 50m
2026-04-22 TGZ652 AMS → TBS Apr 22, 10:00 UTCApr 22, 14:10 UTC4h 10m
2026-04-22 TGZ651 TBS → AMS Apr 22, 03:15 UTCApr 22, 04:20 UTC1h 5m
2026-04-21 TGZ2779 TBS → FRA Apr 21, 05:45 UTCApr 21, 06:45 UTC1h 0m
2026-04-20 TGZ652 AMS → TBS Apr 20, 09:10 UTCApr 20, 11:50 UTC2h 40m
2026-04-20 TGZ651 TBS → AMS Apr 20, 02:55 UTCApr 20, 03:55 UTC1h 0m

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?
Yes. Mode-S 51408C is currently airborne.
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 18 distinct callsigns, including TGZ683, TGZ731, TGZ782, TGZ732, TGZ684.