Apparatus

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sensors Mode-S transponder

503CB3

ICAO 24-bit transponder address · allocated to Lithuania

Currently assigned to LY-TFS · BOEING 737-800

Hex
503CB3
Octal
24036263
Decimal
5,258,419
Country
LT
Tail
LY-TFS
Type
B738
No current signal · last broadcast 4h ago
Flights observed
185
Distinct callsigns
20
Country
LT
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 503CB3.

Country allocation

The ICAO 24-bit address 503CB3 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
ELY5246 El Al Israel Airlines 8 2026-06-09
ELY5245 El Al Israel Airlines 8 2026-06-09
ELY5138 El Al Israel Airlines 8 2026-06-08
ELY5137 El Al Israel Airlines 8 2026-06-08
ELY5063 El Al Israel Airlines 8 2026-06-08
ELY5129 El Al Israel Airlines 7 2026-06-10
ELY5120 El Al Israel Airlines 7 2026-06-05
ELY5119 El Al Israel Airlines 7 2026-06-09
ELY5102 El Al Israel Airlines 7 2026-06-10
ELY5101 El Al Israel Airlines 7 2026-06-10
ELY5064 El Al Israel Airlines 7 2026-06-08
ELY5183 El Al Israel Airlines 6 2026-06-04
ELY5032 El Al Israel Airlines 6 2026-06-04
ELY5031 El Al Israel Airlines 6 2026-06-04
ELY5141 El Al Israel Airlines 5 2026-06-09
ELY5134 El Al Israel Airlines 5 2026-06-06
ELY5112 - 5 2026-05-29
ELY5111 El Al Israel Airlines 5 2026-05-29
ELY5184 El Al Israel Airlines 4 2026-06-04
ELY5156 El Al Israel Airlines 4 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-10 ELY5130 RMO → TLV Jun 10, 18:05 UTCJun 10, 20:20 UTC2h 15m
2026-06-10 ELY5129 TLV → RMO Jun 10, 13:55 UTCJun 10, 16:20 UTC2h 25m
2026-06-10 ELY5102 BUS → TLV Jun 10, 08:50 UTCJun 10, 12:10 UTC3h 20m
2026-06-10 ELY5101 TLV → BUS Jun 10, 03:25 UTCJun 10, 06:55 UTC3h 30m
2026-06-09 ELY5119 TLV → KRK Jun 9, 16:55 UTCJun 10, 00:35 UTC7h 40m
2026-06-09 ELY5142 LCA → TLV Jun 9, 13:35 UTCJun 9, 14:15 UTC40m
2026-06-09 ELY5141 TLV → LCA Jun 9, 10:15 UTCJun 9, 10:55 UTC40m
2026-06-09 ELY5246 SKG → TLV Jun 9, 06:25 UTCJun 9, 08:25 UTC2h 0m
2026-06-09 ELY5245 TLV → SKG Jun 9, 02:35 UTCJun 9, 04:45 UTC2h 10m
2026-06-08 ELY5138 PFO → TLV Jun 8, 21:20 UTCJun 8, 21:55 UTC35m
2026-06-08 ELY5137 TLV → PFO Jun 8, 19:10 UTCJun 8, 19:50 UTC40m
2026-06-08 ELY5064 BCN → TLV Jun 8, 16:00 UTCJun 8, 17:15 UTC1h 15m
2026-06-08 ELY5063 TLV → BCN Jun 8, 13:35 UTCJun 8, 14:15 UTC40m
2026-06-08 ELY5194 SSH → TLV Jun 8, 07:35 UTCJun 8, 10:50 UTC3h 15m
2026-06-08 ELY5193 TLV → SSH Jun 8, 02:45 UTCJun 8, 06:00 UTC3h 15m
2026-06-07 ELY5138 PFO → TLV Jun 7, 19:30 UTCJun 7, 20:10 UTC40m
2026-06-07 ELY5137 TLV → PFO Jun 7, 17:05 UTCJun 7, 17:50 UTC45m
2026-06-07 ELY5438 PFO → TLV Jun 7, 14:10 UTCJun 7, 15:00 UTC50m
2026-06-07 ELY5437 TLV → PFO Jun 7, 11:35 UTCJun 7, 12:20 UTC45m
2026-06-07 ELY5156 VAR → TLV Jun 7, 07:55 UTCJun 7, 09:55 UTC2h 0m
2026-06-07 ELY5155 TLV → VAR Jun 7, 03:50 UTCJun 7, 05:50 UTC2h 0m
2026-06-06 ELY5134 LCA → TLV Jun 6, 21:04 UTCJun 6, 21:35 UTC30m
2026-06-05 ELY5133 TLV → LCA Jun 5, 13:20 UTCJun 5, 14:00 UTC40m
2026-06-05 ELY5120 TBS → TLV Jun 5, 08:25 UTCJun 5, 11:35 UTC3h 10m
2026-06-05 ELY5119 TLV → KRK Jun 5, 03:35 UTCJun 5, 07:00 UTC3h 25m
2026-06-04 ELY5184 TIA → TLV Jun 4, 20:50 UTCJun 4, 23:10 UTC2h 20m
2026-06-04 ELY5183 TLV → TIA Jun 4, 16:40 UTCJun 4, 19:05 UTC2h 25m
2026-06-04 ELY5032 RHO → TLV Jun 4, 13:00 UTCJun 4, 14:20 UTC1h 20m
2026-06-04 ELY5031 TLV → RHO Jun 4, 09:30 UTCJun 4, 10:50 UTC1h 20m
2026-06-04 ELY5064 BCN → TLV Jun 4, 06:05 UTCJun 4, 07:25 UTC1h 20m
2026-06-04 ELY5063 TLV → BCN Jun 4, 03:10 UTCJun 4, 04:20 UTC1h 10m
2026-06-03 ELY5129 TLV → RMO Jun 3, 14:25 UTCJun 3, 20:45 UTC6h 20m
2026-06-03 ELY5102 BUS → TLV Jun 3, 08:50 UTCJun 3, 12:10 UTC3h 20m
2026-06-03 ELY5101 TLV → BUS Jun 3, 03:30 UTCJun 3, 07:05 UTC3h 35m
2026-06-02 ELY5404 BUS → TLV Jun 2, 21:50 UTCJun 2, 23:45 UTC1h 55m
2026-06-02 ELY5403 TLV → BUS Jun 2, 18:25 UTCJun 2, 20:15 UTC1h 50m
2026-06-02 ELY5064 BCN → TLV Jun 2, 14:35 UTCJun 2, 16:05 UTC1h 30m
2026-06-02 ELY5063 TLV → BCN Jun 2, 11:15 UTCJun 2, 12:05 UTC50m
2026-06-02 ELY5246 SKG → TLV Jun 2, 06:05 UTCJun 2, 08:15 UTC2h 10m
2026-06-02 ELY5245 TLV → SKG Jun 2, 02:35 UTCJun 2, 04:35 UTC2h 0m
2026-06-01 ELY5102 BUS → TLV Jun 1, 20:35 UTCJun 1, 23:55 UTC3h 20m
2026-06-01 ELY5101 TLV → BUS Jun 1, 15:10 UTCJun 1, 18:45 UTC3h 35m
2026-06-01 ELY5120 TBS → TLV Jun 1, 09:50 UTCJun 1, 12:55 UTC3h 5m
2026-06-01 ELY5119 TLV → KRK Jun 1, 04:30 UTCJun 1, 05:30 UTC1h 0m
2026-05-31 ELY5138 PFO → TLV May 31, 19:50 UTCMay 31, 20:45 UTC55m
2026-05-31 ELY5137 TLV → PFO May 31, 17:35 UTCMay 31, 18:25 UTC50m
2026-05-31 ELY5488 CAG → TLV May 31, 11:00 UTCMay 31, 13:55 UTC2h 55m
2026-05-30 ELY5484 TIA → TLV May 30, 22:05 UTCMay 31, 00:05 UTC2h 0m
2026-05-29 ELY5183 TLV → TIA May 29, 12:50 UTCMay 29, 15:05 UTC2h 15m
2026-05-29 ELY5112 - May 29, 08:20 UTCMay 29, 11:05 UTC2h 45m

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-TFS page for operator, model, and routing details .

Mode-S 503CB3 frequently asked

What is Mode-S code 503CB3?
503CB3 is an ICAO 24-bit transponder address. Allocated to Lithuania. Assigned to LY-TFS.
Where is Mode-S 503CB3 registered?
Mode-S code 503CB3 is allocated to Lithuania (LT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 503CB3 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 503CB3, octal 24036263, decimal 5,258,419.
What flights does 503CB3 operate?
Mode-S 503CB3 has broadcast 20 distinct callsigns, including ELY5246, ELY5245, ELY5138, ELY5137, ELY5063.