Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

503D8A

ICAO 24-bit transponder address · allocated to Lithuania

Hex
503D8A
Octal
24036612
Decimal
5,258,634
Country
LT
No current signal · last broadcast 7h ago
Flights observed
159
Distinct callsigns
20
Country
LT
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 503D8A.

Country allocation

The ICAO 24-bit address 503D8A 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
DTR1826 DAT Danish Air Transport 22 2026-06-02
DTR1825 DAT Danish Air Transport 21 2026-06-02
DTR69C DAT Danish Air Transport 18 2026-06-01
DTR67H DAT Danish Air Transport 14 2026-06-01
DTR1832 DAT Danish Air Transport 13 2026-06-01
DTR68A DAT Danish Air Transport 12 2026-06-02
DTR1836 DAT Danish Air Transport 9 2026-06-02
DTR69V DAT Danish Air Transport 7 2026-05-31
DTR1831 DAT Danish Air Transport 6 2026-06-01
DTR1901 DAT Danish Air Transport 5 2026-05-31
DNU41K DOT LT 4 2026-04-22
DNU51K - 3 2026-04-22
DNU46R DOT LT 3 2026-04-22
DNU38R - 3 2026-04-22
DNU50R DOT LT 2 2026-04-21
DTR197 DAT Danish Air Transport 1 2026-05-03
DTR1900 - 1 2026-05-14
DTR1830 - 1 2026-05-12
DTR1828 DAT Danish Air Transport 1 2026-06-01
DTR1827 DAT Danish Air Transport 1 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 DTR1825 PMO → PNL Jun 2, 17:40 UTCJun 2, 18:05 UTC25m
2026-06-02 DTR1826 PNL → PMO Jun 2, 16:05 UTCJun 2, 16:40 UTC35m
2026-06-02 DTR68A TPS → PNL Jun 2, 14:45 UTCJun 2, 15:10 UTC25m
2026-06-02 DTR1836 PNL → TPS Jun 2, 13:40 UTCJun 2, 14:05 UTC25m
2026-06-02 DTR1824 PNL → PMO Jun 2, 12:35 UTCJun 2, 12:50 UTC15m
2026-06-02 DTR1823 PMO → PNL Jun 2, 10:50 UTCJun 2, 11:25 UTC35m
2026-06-01 DTR1825 PMO → PNL Jun 1, 17:45 UTCJun 1, 18:10 UTC25m
2026-06-01 DTR1826 PNL → PMO Jun 1, 16:15 UTCJun 1, 16:55 UTC40m
2026-06-01 DTR68A TPS → PNL Jun 1, 15:20 UTCJun 1, 15:30 UTC10m
2026-06-01 DTR1836 PNL → TPS Jun 1, 13:50 UTCJun 1, 14:20 UTC30m
2026-06-01 DTR1827 PMO → PNL Jun 1, 12:35 UTCJun 1, 12:55 UTC20m
2026-06-01 DTR1828 PNL → PMO Jun 1, 10:55 UTCJun 1, 11:35 UTC40m
2026-06-01 DTR67H PMO → PNL Jun 1, 09:50 UTCJun 1, 10:10 UTC20m
2026-06-01 DTR69C PNL → PMO Jun 1, 07:35 UTCJun 1, 08:10 UTC35m
2026-06-01 DTR1831 TPS → PNL Jun 1, 06:20 UTCJun 1, 06:50 UTC30m
2026-06-01 DTR1832 PNL → TPS Jun 1, 05:10 UTCJun 1, 05:40 UTC30m
2026-05-31 DTR68A TPS → PNL May 31, 18:15 UTCMay 31, 18:35 UTC20m
2026-05-31 DTR1825 PMO → PNL May 31, 15:25 UTCMay 31, 16:05 UTC40m
2026-05-31 DTR1826 PNL → PMO May 31, 14:10 UTCMay 31, 14:35 UTC25m
2026-05-31 DTR1901 CTA → PNL May 31, 12:30 UTCMay 31, 13:20 UTC50m
2026-05-31 DTR69V PNL → CTA May 31, 10:35 UTCMay 31, 11:25 UTC50m
2026-05-31 DTR67H PMO → PNL May 31, 09:25 UTCMay 31, 09:55 UTC30m
2026-05-30 DTR1836 PNL → TPS May 30, 16:35 UTCMay 30, 16:50 UTC15m
2026-05-30 DTR1825 PMO → PNL May 30, 15:10 UTCMay 30, 15:50 UTC40m
2026-05-30 DTR1826 PNL → PMO May 30, 13:55 UTCMay 30, 14:10 UTC15m
2026-05-30 DTR69C PNL → PMO May 30, 08:05 UTCMay 30, 08:35 UTC30m
2026-05-30 DTR1831 TPS → PNL May 30, 07:00 UTCMay 30, 07:10 UTC10m
2026-05-30 DTR1832 PNL → TPS May 30, 05:20 UTCMay 30, 05:45 UTC25m
2026-05-29 DTR1825 PMO → PNL May 29, 15:15 UTCMay 29, 15:25 UTC10m
2026-05-29 DTR1826 PNL → PMO May 29, 13:55 UTCMay 29, 14:10 UTC15m
2026-05-28 DTR1826 PNL → PMO May 28, 14:10 UTCMay 28, 14:45 UTC35m
2026-05-28 DTR1901 CTA → PNL May 28, 12:20 UTCMay 28, 13:05 UTC45m
2026-05-28 DTR69V PNL → CTA May 28, 10:45 UTCMay 28, 11:20 UTC35m
2026-05-28 DTR69C PNL → PMO May 28, 07:40 UTCMay 28, 08:15 UTC35m
2026-05-28 DTR1832 PNL → TPS May 28, 05:10 UTCMay 28, 05:20 UTC10m
2026-05-27 DTR1836 PNL → TPS May 27, 16:25 UTCMay 27, 16:50 UTC25m
2026-05-27 DTR1825 PMO → PNL May 27, 14:55 UTCMay 27, 15:30 UTC35m
2026-05-27 DTR1826 PNL → PMO May 27, 13:30 UTCMay 27, 14:15 UTC45m
2026-05-27 DTR67H PMO → PNL May 27, 09:30 UTCMay 27, 09:45 UTC15m
2026-05-27 DTR69C PNL → PMO May 27, 07:50 UTCMay 27, 08:20 UTC30m
2026-05-27 DTR1831 TPS → PNL May 27, 06:44 UTCMay 27, 07:00 UTC16m
2026-05-27 DTR1832 PNL → TPS May 27, 05:09 UTCMay 27, 05:24 UTC15m
2026-05-25 DTR1825 PMO → PNL May 25, 15:10 UTCMay 25, 15:35 UTC25m
2026-05-25 DTR67H PMO → PNL May 25, 09:40 UTCMay 25, 10:00 UTC20m
2026-05-25 DTR69C PNL → PMO May 25, 08:15 UTCMay 25, 08:25 UTC10m
2026-05-23 DTR69C PNL → PMO May 23, 08:05 UTCMay 23, 08:20 UTC15m
2026-05-18 DTR1826 PNL → PMO May 18, 13:50 UTCMay 18, 14:10 UTC20m
2026-05-18 DTR69C PNL → PMO May 18, 07:45 UTCMay 18, 08:01 UTC15m
2026-05-18 DTR1832 PNL → TPS May 18, 05:10 UTCMay 18, 05:30 UTC20m
2026-05-16 DTR1832 PNL → TPS May 16, 05:25 UTCMay 16, 05:40 UTC15m

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 503D8A frequently asked

What is Mode-S code 503D8A?
503D8A is an ICAO 24-bit transponder address. Allocated to Lithuania.
Where is Mode-S 503D8A registered?
Mode-S code 503D8A is allocated to Lithuania (LT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 503D8A broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 503D8A, octal 24036612, decimal 5,258,634.
What flights does 503D8A operate?
Mode-S 503D8A has broadcast 20 distinct callsigns, including DTR1826, DTR1825, DTR69C, DTR67H, DTR1832.