Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

503D41

ICAO 24-bit transponder address · allocated to Lithuania

Hex
503D41
Octal
24036501
Decimal
5,258,561
Country
LT
No current signal · last broadcast Jul 25, 17:20 UTC
Flights observed
116
Distinct callsigns
20
Country
LT
Last broadcast
Jul 25, 17:20 UTC

Last known position

Most recent position reported by Mode-S 503D41.

Country allocation

The ICAO 24-bit address 503D41 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
ASL93N - 5 2026-07-04
ASL36V - 5 2026-07-04
ASL64D - 3 2026-07-03
ASL58B - 3 2026-07-04
ASL53A - 3 2026-07-03
ASL25H Spurling Aviation 3 2026-07-03
ASL16C - 3 2026-07-03
GJT9901 Gestion Aerea Ajecutiva 2 2026-06-05
ASL9431 - 2 2026-07-04
ASL9430 - 2 2026-07-04
ASL93X Spurling Aviation 2 2026-06-14
ASL80Z - 2 2026-07-02
ASL61R - 2 2026-06-23
ASL60B - 2 2026-07-02
ASL58E - 2 2026-07-01
ASL38H - 2 2026-07-02
ASL37R Spurling Aviation 2 2026-06-14
ASL33A - 2 2026-07-02
MAC998 - 1 2026-07-21
MAC9902 - 1 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 KMM9991 MLA → VNO Jul 25, 14:05 UTCJul 25, 17:15 UTC3h 10m
2026-07-25 KMM515 VIE → MLA Jul 25, 10:45 UTCJul 25, 12:35 UTC1h 50m
2026-07-25 KMM514 MLA → VIE Jul 25, 07:30 UTCJul 25, 09:30 UTC2h 0m
2026-07-24 KMM615 - Jul 24, 20:55 UTCJul 24, 21:55 UTC1h 0m
2026-07-24 KMM614 MLA → FCO Jul 24, 17:50 UTCJul 24, 19:05 UTC1h 15m
2026-07-24 KMM307 - Jul 24, 11:05 UTCJul 24, 12:50 UTC1h 45m
2026-07-24 KMM306 - Jul 24, 07:15 UTCJul 24, 09:25 UTC2h 10m
2026-07-24 KMM9990 VNO → MLA Jul 24, 03:05 UTCJul 24, 05:50 UTC2h 45m
2026-07-22 MAC9902 - Jul 22, 10:20 UTCJul 22, 14:00 UTC3h 40m
2026-07-21 MAC824 MRS → FEZ Jul 21, 20:20 UTCJul 21, 22:05 UTC1h 45m
2026-07-21 MAC823 FEZ → MRS Jul 21, 17:20 UTCJul 21, 19:00 UTC1h 40m
2026-07-21 MAC998 - Jul 21, 15:55 UTCJul 21, 16:15 UTC20m
2026-07-20 MAC468 BLQ → CMN Jul 20, 22:05 UTCJul 21, 01:00 UTC2h 55m
2026-07-20 MAC9901 MAD → TNG Jul 20, 18:25 UTCJul 20, 20:35 UTC2h 10m
2026-07-20 BLX982P LTN → GOT Jul 20, 16:15 UTCJul 20, 17:20 UTC1h 5m
2026-07-19 BLX176 AYT → OSL Jul 19, 22:45 UTCJul 20, 01:30 UTC2h 45m
2026-07-19 BLX175 ARN → AHO Jul 19, 18:15 UTCJul 19, 21:15 UTC3h 0m
2026-07-19 BLX981P DUB → ORK Jul 19, 15:35 UTCJul 19, 16:40 UTC1h 5m
2026-07-18 CSW5801 ZRH → VNO Jul 18, 10:50 UTCJul 18, 12:45 UTC1h 55m
2026-07-17 CSW8HE - Jul 17, 14:50 UTCJul 17, 17:35 UTC2h 45m
2026-07-17 CSW8GJ - Jul 17, 11:04 UTCJul 17, 13:20 UTC2h 15m
2026-07-17 CSW5800 VNO → ZRH Jul 17, 04:59 UTCJul 17, 07:14 UTC2h 15m
2026-07-13 ASL4040 BEG → VNO Jul 13, 19:35 UTCJul 13, 21:20 UTC1h 45m
2026-07-04 ASL58B - Jul 4, 19:10 UTCJul 5, 00:20 UTC5h 10m
2026-07-04 ASL57G - Jul 4, 16:45 UTCJul 4, 18:35 UTC1h 50m
2026-07-04 ASL93N RHO → BEG Jul 4, 13:55 UTCJul 4, 15:40 UTC1h 45m
2026-07-04 ASL36V BEG → RHO Jul 4, 11:10 UTCJul 4, 12:50 UTC1h 40m
2026-07-04 ASL9431 - Jul 4, 07:20 UTCJul 4, 08:50 UTC1h 30m
2026-07-04 ASL9430 - Jul 4, 04:45 UTCJul 4, 06:05 UTC1h 20m
2026-07-03 ASL16C - Jul 3, 15:30 UTCJul 3, 16:55 UTC1h 25m
2026-07-03 ASL25H BEG → JMK Jul 3, 10:55 UTCJul 3, 12:25 UTC1h 30m
2026-07-03 ASL64D - Jul 3, 07:10 UTCJul 3, 09:05 UTC1h 55m
2026-07-03 ASL53A - Jul 3, 03:35 UTCJul 3, 05:30 UTC1h 55m
2026-07-02 ASL33A - Jul 2, 13:20 UTCJul 2, 15:15 UTC1h 55m
2026-07-02 ASL80Z BEG → AYT Jul 2, 10:00 UTCJul 2, 11:45 UTC1h 45m
2026-07-02 ASL60B - Jul 2, 06:30 UTCJul 2, 08:15 UTC1h 45m
2026-07-02 ASL38H BEG → AYT Jul 2, 03:10 UTCJul 2, 05:00 UTC1h 50m
2026-07-01 ASL58E - Jul 1, 23:20 UTCJul 2, 01:25 UTC2h 5m
2026-07-01 ASL36G - Jul 1, 17:35 UTCJul 1, 20:15 UTC2h 40m
2026-07-01 ASL93N RHO → BEG Jul 1, 13:10 UTCJul 1, 14:55 UTC1h 45m
2026-07-01 ASL36V BEG → RHO Jul 1, 10:10 UTCJul 1, 11:55 UTC1h 45m
2026-07-01 ASL85B - Jul 1, 06:55 UTCJul 1, 08:50 UTC1h 55m
2026-07-01 ASL52F LYS → BEG Jul 1, 03:25 UTCJul 1, 05:35 UTC2h 10m
2026-06-30 ASL9171 - Jun 30, 21:05 UTCJun 30, 22:50 UTC1h 45m
2026-06-30 ASL9170 - Jun 30, 17:40 UTCJun 30, 19:15 UTC1h 35m
2026-06-30 ASL56H - Jun 30, 06:30 UTCJun 30, 08:25 UTC1h 55m
2026-06-30 ASL97Q - Jun 30, 03:10 UTCJun 30, 05:00 UTC1h 50m
2026-06-29 ASL93N RHO → BEG Jun 29, 14:34 UTCJun 29, 16:10 UTC1h 35m
2026-06-29 ASL36V BEG → RHO Jun 29, 11:04 UTCJun 29, 12:49 UTC1h 45m
2026-06-29 ASL95D - Jun 29, 06:24 UTCJun 29, 08:09 UTC1h 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.

Mode-S 503D41 frequently asked

What is Mode-S code 503D41?
503D41 is an ICAO 24-bit transponder address. Allocated to Lithuania.
Where is Mode-S 503D41 registered?
Mode-S code 503D41 is allocated to Lithuania (LT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 503D41 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 17:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 503D41, octal 24036501, decimal 5,258,561.
What flights does 503D41 operate?
Mode-S 503D41 has broadcast 20 distinct callsigns, including ASL93N, ASL36V, ASL64D, ASL58B, ASL53A.