sensors Mode-S transponder

503D4D

ICAO 24-bit transponder address · allocated to Lithuania

Currently assigned to LY-MAU · AIRBUS A-320

Hex
503D4D
Octal
24036515
Decimal
5,258,573
Country
LT
Tail
LY-MAU
Type
A320
Broadcasting now · callsign CFG003 · 1,925 ft
Flights observed
77
Distinct callsigns
20
Country
LT
Last broadcast
45m ago

Current position

503D4D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 503D4D 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
HST2354 - 3 2026-06-09
MAC9901 Malta Air Charter 2 2026-05-20
KRP462 - 2 2026-06-08
KRP461 - 2 2026-06-05
HST2392 - 2 2026-06-03
HST2391 - 2 2026-06-03
HST2356 - 2 2026-06-03
HST2355 - 2 2026-06-03
HST2353 - 2 2026-06-09
HST2352 - 2 2026-06-04
HST2351 - 2 2026-06-04
HST2322 - 2 2026-06-09
HST2321 - 2 2026-06-09
CFG4810 - 2 2026-06-11
TAR999 Tunisair 1 2026-06-08
TAR998 Tunisair 1 2026-06-07
TAR9126 - 1 2026-06-08
TAR9125 - 1 2026-06-06
TAR902 Tunisair 1 2026-06-07
TAR757 Tunisair 1 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-15 CFG002 - Jun 15, 04:55 UTCJun 15, 15:15 UTC10h 20m
2026-06-14 CFG7ZD TFS → HAM Jun 14, 16:10 UTCJun 14, 20:40 UTC4h 30m
2026-06-14 CFG7AL HAM → TFS Jun 14, 09:55 UTCJun 14, 14:25 UTC4h 30m
2026-06-14 CFG1EK RHO → BER Jun 14, 06:10 UTCJun 14, 08:35 UTC2h 25m
2026-06-14 CFG3UF FMO → PMI Jun 14, 02:40 UTCJun 14, 04:35 UTC1h 55m
2026-06-13 CFG4EM PMI → HAM Jun 13, 22:35 UTCJun 14, 00:45 UTC2h 10m
2026-06-13 CFG8HF FRA → HER Jun 13, 19:00 UTCJun 13, 21:15 UTC2h 15m
2026-06-13 CFG003 HAM → HAM Jun 13, 06:50 UTCJun 13, 17:25 UTC10h 35m
2026-06-13 CFG4864 HAJ → HAM Jun 13, 05:00 UTCJun 13, 05:20 UTC20m
2026-06-12 CFG9JX - Jun 12, 19:35 UTCJun 12, 23:30 UTC3h 55m
2026-06-12 CFG9XK LPA → HAM Jun 12, 13:35 UTCJun 12, 18:15 UTC4h 40m
2026-06-12 CFG5KD PMI → HAM Jun 12, 06:20 UTCJun 12, 08:50 UTC2h 30m
2026-06-12 CFG7YK HER → MUC Jun 12, 02:40 UTCJun 12, 04:30 UTC1h 50m
2026-06-11 CFG4810 - Jun 11, 21:55 UTCJun 11, 22:30 UTC35m
2026-06-11 CFG4810 - Jun 11, 20:45 UTCJun 11, 21:50 UTC1h 5m
2026-06-09 HST2354 - Jun 9, 16:45 UTCJun 9, 19:55 UTC3h 10m
2026-06-09 HST2353 - Jun 9, 11:20 UTCJun 9, 14:20 UTC3h 0m
2026-06-09 HST2322 - Jun 9, 07:00 UTCJun 9, 09:55 UTC2h 55m
2026-06-09 HST2321 - Jun 9, 02:30 UTCJun 9, 05:10 UTC2h 40m
2026-06-08 KRP462 BES → VNO Jun 8, 14:25 UTCJun 8, 17:05 UTC2h 40m
2026-06-08 KRP462 BUD → BES Jun 8, 10:25 UTCJun 8, 13:05 UTC2h 40m
2026-06-08 TAR9126 - Jun 8, 06:55 UTCJun 8, 08:45 UTC1h 50m
2026-06-08 TAR999 NCE → TUN Jun 8, 00:15 UTCJun 8, 01:25 UTC1h 10m
2026-06-07 TAR998 TUN → NCE Jun 7, 18:15 UTCJun 7, 22:20 UTC4h 5m
2026-06-07 TAR902 TUN → MRS Jun 7, 15:45 UTCJun 7, 16:50 UTC1h 5m
2026-06-07 TAR757 MXP → TUN Jun 7, 12:20 UTCJun 7, 13:40 UTC1h 20m
2026-06-07 TAR756 TUN → MXP Jun 7, 09:40 UTCJun 7, 10:50 UTC1h 10m
2026-06-06 TAR527 DUS → TUN Jun 6, 16:30 UTCJun 6, 18:39 UTC2h 10m
2026-06-06 TAR526 TUN → DUS Jun 6, 13:20 UTCJun 6, 15:30 UTC2h 10m
2026-06-06 TAR9125 - Jun 6, 09:04 UTCJun 6, 10:50 UTC1h 45m
2026-06-05 KRP461 - Jun 5, 13:10 UTCJun 5, 15:35 UTC2h 25m
2026-06-05 KRP461 VNO → BES Jun 5, 08:30 UTCJun 5, 11:30 UTC3h 0m
2026-06-04 HST2352 - Jun 4, 07:05 UTCJun 4, 10:05 UTC3h 0m
2026-06-04 HST2351 - Jun 4, 02:30 UTCJun 4, 05:30 UTC3h 0m
2026-06-03 HST2392 - Jun 3, 15:10 UTCJun 3, 17:15 UTC2h 5m
2026-06-03 HST2391 - Jun 3, 11:20 UTCJun 3, 13:35 UTC2h 15m
2026-06-03 HST2356 - Jun 3, 07:00 UTCJun 3, 10:10 UTC3h 10m
2026-06-03 HST2355 - Jun 3, 02:25 UTCJun 3, 05:20 UTC2h 55m
2026-06-02 HST2354 - Jun 2, 16:00 UTCJun 2, 19:15 UTC3h 15m
2026-06-02 HST2353 - Jun 2, 11:25 UTCJun 2, 14:20 UTC2h 55m
2026-06-02 HST2322 - Jun 2, 07:00 UTCJun 2, 10:00 UTC3h 0m
2026-06-02 HST2321 VNO → HER Jun 2, 02:20 UTCJun 2, 05:25 UTC3h 5m
2026-06-01 HST2352 - Jun 1, 06:40 UTCJun 1, 09:50 UTC3h 10m
2026-06-01 HST2351 VNO → AYT Jun 1, 02:20 UTCJun 1, 05:15 UTC2h 55m
2026-05-31 HST2392 - May 31, 15:00 UTCMay 31, 17:10 UTC2h 10m
2026-05-31 HST2391 - May 31, 11:30 UTCMay 31, 13:15 UTC1h 45m
2026-05-31 HST2354 - May 31, 08:25 UTCMay 31, 09:50 UTC1h 25m
2026-05-30 HST2356 - May 30, 07:05 UTCMay 30, 10:25 UTC3h 20m
2026-05-30 HST2355 VNO → AYT May 30, 02:25 UTCMay 30, 05:25 UTC3h 0m
2026-05-24 MAC9902 PSA → VNO May 24, 17:30 UTCMay 24, 21:45 UTC4h 15m

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

Mode-S 503D4D frequently asked

What is Mode-S code 503D4D?
503D4D is an ICAO 24-bit transponder address. Allocated to Lithuania. Assigned to LY-MAU.
Where is Mode-S 503D4D registered?
Mode-S code 503D4D is allocated to Lithuania (LT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 503D4D broadcasting right now?
Yes. Mode-S 503D4D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 503D4D, octal 24036515, decimal 5,258,573.
What flights does 503D4D operate?
Mode-S 503D4D has broadcast 20 distinct callsigns, including HST2354, MAC9901, KRP462, KRP461, HST2392.