Apparatus

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sensors Mode-S transponder

503E99

ICAO 24-bit transponder address · allocated to Lithuania

Currently assigned to LY-CIN · BOEING 737-800

Hex
503E99
Octal
24037231
Decimal
5,258,905
Country
LT
Tail
LY-CIN
Type
B738
No current signal · last broadcast 1h ago
Flights observed
92
Distinct callsigns
20
Country
LT
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 503E99.

Country allocation

The ICAO 24-bit address 503E99 falls within the block assigned to Lithuania (LT) by ICAO Annex 10, Volume III. Every aircraft registered in Lithuania 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
GJM3328 - 8 2026-06-09
GJM3327 - 8 2026-06-09
GJT9NV Gestion Aerea Ajecutiva 5 2026-06-10
GJT7XU Gestion Aerea Ajecutiva 5 2026-05-28
GJT25H Gestion Aerea Ajecutiva 5 2026-06-10
GJT8EH - 4 2026-06-06
GJT73G - 4 2026-06-08
GJT5WB - 4 2026-06-01
GJT57X - 4 2026-06-06
GJT54E Gestion Aerea Ajecutiva 4 2026-05-17
GJT96D - 3 2026-06-06
GJT8AV - 3 2026-06-11
GJT78Y - 3 2026-06-11
GJT78G - 3 2026-06-12
GJT66T Gestion Aerea Ajecutiva 3 2026-06-12
GJT2CJ Gestion Aerea Ajecutiva 3 2026-06-06
VKG4983 - 2 2026-04-17
GJT7PN Gestion Aerea Ajecutiva 2 2026-06-09
GJT4Q - 2 2026-06-07
GJT46R Gestion Aerea Ajecutiva 2 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-12 GJT78G - Jun 12, 16:35 UTCJun 12, 19:20 UTC2h 45m
2026-06-12 GJT66T VNO → BJV Jun 12, 12:05 UTCJun 12, 15:10 UTC3h 5m
2026-06-11 GJT78Y - Jun 11, 08:05 UTCJun 11, 10:25 UTC2h 20m
2026-06-11 GJT8AV - Jun 11, 03:50 UTCJun 11, 06:30 UTC2h 40m
2026-06-10 GJM3374 RHO → VNO Jun 10, 16:40 UTCJun 10, 19:35 UTC2h 55m
2026-06-10 GJM3373 VNO → RHO Jun 10, 12:20 UTCJun 10, 15:25 UTC3h 5m
2026-06-10 GJT9NV AYT → VNO Jun 10, 07:25 UTCJun 10, 10:25 UTC3h 0m
2026-06-10 GJT25H VNO → AYT Jun 10, 02:30 UTCJun 10, 05:30 UTC3h 0m
2026-06-09 GJT7PN BOJ → VNO Jun 9, 15:30 UTCJun 9, 18:25 UTC2h 55m
2026-06-09 GJT46R VNO → BOJ Jun 9, 12:00 UTCJun 9, 14:25 UTC2h 25m
2026-06-09 GJM3328 - Jun 9, 07:10 UTCJun 9, 10:10 UTC3h 0m
2026-06-09 GJM3327 - Jun 9, 02:45 UTCJun 9, 05:40 UTC2h 55m
2026-06-08 GJT73G VNO → VNO Jun 8, 12:20 UTCJun 8, 18:50 UTC6h 30m
2026-06-08 GJT9NV AYT → VNO Jun 8, 06:55 UTCJun 8, 10:05 UTC3h 10m
2026-06-08 GJT25H VNO → AYT Jun 8, 02:25 UTCJun 8, 05:30 UTC3h 5m
2026-06-07 GJM3328 - Jun 7, 16:15 UTCJun 7, 19:10 UTC2h 55m
2026-06-07 GJM3327 - Jun 7, 12:00 UTCJun 7, 14:50 UTC2h 50m
2026-06-07 GJT4Q - Jun 7, 07:30 UTCJun 7, 10:05 UTC2h 35m
2026-06-07 GJT75C - Jun 7, 03:25 UTCJun 7, 06:15 UTC2h 50m
2026-06-06 GJT8EH RHO → VNO Jun 6, 16:45 UTCJun 6, 19:50 UTC3h 5m
2026-06-06 GJT57X VNO → RHO Jun 6, 12:14 UTCJun 6, 15:19 UTC3h 5m
2026-06-06 GJT96D - Jun 6, 07:20 UTCJun 6, 09:50 UTC2h 30m
2026-06-06 GJT2CJ VNO → GPA Jun 6, 03:05 UTCJun 6, 05:45 UTC2h 40m
2026-06-05 GJT78G - Jun 5, 16:25 UTCJun 5, 19:10 UTC2h 45m
2026-06-05 GJT66T VNO → BJV Jun 5, 12:00 UTCJun 5, 14:55 UTC2h 55m
2026-06-04 GJM3328 - Jun 4, 17:05 UTCJun 4, 20:10 UTC3h 5m
2026-06-04 GJM3327 - Jun 4, 12:25 UTCJun 4, 15:20 UTC2h 55m
2026-06-04 GJT78Y - Jun 4, 08:05 UTCJun 4, 10:45 UTC2h 40m
2026-06-04 GJT8AV - Jun 4, 03:55 UTCJun 4, 06:20 UTC2h 25m
2026-06-03 GJT2PZ - Jun 3, 15:50 UTCJun 3, 18:00 UTC2h 10m
2026-06-03 GJT44P VNO → RMI Jun 3, 12:25 UTCJun 3, 14:35 UTC2h 10m
2026-06-03 GJM3328 - Jun 3, 07:45 UTCJun 3, 10:35 UTC2h 50m
2026-06-03 GJM3327 - Jun 3, 03:20 UTCJun 3, 06:10 UTC2h 50m
2026-06-02 GJT7PN BOJ → VNO Jun 2, 15:45 UTCJun 2, 18:05 UTC2h 20m
2026-06-02 GJT46R VNO → BOJ Jun 2, 12:10 UTCJun 2, 14:20 UTC2h 10m
2026-06-02 GJM3328 - Jun 2, 07:10 UTCJun 2, 10:15 UTC3h 5m
2026-06-02 GJM3327 VNO → HER Jun 2, 02:50 UTCJun 2, 05:50 UTC3h 0m
2026-06-01 GJT5WB - Jun 1, 16:15 UTCJun 1, 18:35 UTC2h 20m
2026-06-01 GJT73G - Jun 1, 12:25 UTCJun 1, 14:45 UTC2h 20m
2026-06-01 GJM3328 - Jun 1, 05:35 UTCJun 1, 08:35 UTC3h 0m
2026-06-01 GJM3327 - Jun 1, 01:25 UTCJun 1, 04:10 UTC2h 45m
2026-05-31 GJT4Q - May 31, 08:25 UTCMay 31, 09:45 UTC1h 20m
2026-05-30 GJT8EH RHO → VNO May 30, 16:50 UTCMay 30, 20:00 UTC3h 10m
2026-05-30 GJT57X VNO → RHO May 30, 12:25 UTCMay 30, 15:20 UTC2h 55m
2026-05-30 GJT96D - May 30, 07:10 UTCMay 30, 09:50 UTC2h 40m
2026-05-30 GJT2CJ VNO → GPA May 30, 03:05 UTCMay 30, 05:30 UTC2h 25m
2026-05-29 GJM3328 - May 29, 16:35 UTCMay 29, 19:45 UTC3h 10m
2026-05-29 GJM3327 - May 29, 12:15 UTCMay 29, 14:50 UTC2h 35m
2026-05-28 GJT7XU AYT → VNO May 28, 12:10 UTCMay 28, 15:30 UTC3h 20m
2026-05-28 GJT78Y - May 28, 07:50 UTCMay 28, 10:50 UTC3h 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 LY-CIN page for operator, model, and routing details .

Mode-S 503E99 frequently asked

What is Mode-S code 503E99?
503E99 is an ICAO 24-bit transponder address. Allocated to Lithuania. Assigned to LY-CIN.
Where is Mode-S 503E99 registered?
Mode-S code 503E99 is allocated to Lithuania (LT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 503E99 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 503E99, octal 24037231, decimal 5,258,905.
What flights does 503E99 operate?
Mode-S 503E99 has broadcast 20 distinct callsigns, including GJM3328, GJM3327, GJT9NV, GJT7XU, GJT25H.