Apparatus

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sensors Mode-S transponder

503D75

ICAO 24-bit transponder address · allocated to Lithuania

Currently assigned to LY-MHL · AIRBUS A-320

Hex
503D75
Octal
24036565
Decimal
5,258,613
Country
LT
Tail
LY-MHL
Type
A320
No current signal · last broadcast 4h ago
Flights observed
124
Distinct callsigns
20
Country
LT
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 503D75.

Country allocation

The ICAO 24-bit address 503D75 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
AHY073 Azerbaijan Airlines 20 2026-05-23
AHY071 Azerbaijan Airlines 12 2026-05-29
AHY074 Azerbaijan Airlines 11 2026-05-24
AHY035 Azerbaijan Airlines 11 2026-05-26
AHY064 Azerbaijan Airlines 9 2026-05-12
AHY063 Azerbaijan Airlines 9 2026-05-12
AHY8003 Azerbaijan Airlines 5 2026-05-10
AHY036 Azerbaijan Airlines 5 2026-05-27
AHY8105 Azerbaijan Airlines 4 2026-05-25
AHY109 Azerbaijan Airlines 4 2026-05-02
AHY077 Azerbaijan Airlines 4 2026-05-05
AHY026 Azerbaijan Airlines 4 2026-05-06
AHY025 Azerbaijan Airlines 4 2026-05-06
AHY175 Azerbaijan Airlines 3 2026-04-27
AHY078 Azerbaijan Airlines 3 2026-05-05
AHY8224 Azerbaijan Airlines 2 2026-05-28
AHY8042 - 2 2026-04-14
AHY8041 - 2 2026-04-14
AHY703 Azerbaijan Airlines 2 2026-05-14
AHY110 Azerbaijan Airlines 2 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AHY072 VIE → GYD May 29, 11:20 UTCMay 29, 21:25 UTC10h 5m
2026-05-29 AHY071 GYD → VIE May 29, 06:05 UTCMay 29, 07:30 UTC1h 25m
2026-05-28 AHY8234 TBS → GYD May 28, 13:00 UTCMay 28, 13:20 UTC20m
2026-05-28 AHY8233 GYD → TBS May 28, 11:05 UTCMay 28, 11:45 UTC40m
2026-05-28 AHY8224 TBS → GYD May 28, 07:50 UTCMay 28, 08:20 UTC30m
2026-05-28 AHY8224 TBS → GYD May 28, 06:05 UTCMay 28, 06:40 UTC35m
2026-05-27 AHY036 MXP → GYD May 27, 09:45 UTCMay 27, 13:40 UTC3h 55m
2026-05-26 AHY035 GYD → MXP May 26, 13:29 UTCMay 27, 07:55 UTC18h 25m
2026-05-26 AHY035 GYD → MXP May 26, 11:20 UTCMay 27, 07:55 UTC20h 35m
2026-05-26 AHY035 GYD → MXP May 26, 11:05 UTCMay 27, 07:55 UTC20h 50m
2026-05-26 AHY071 GYD → VIE May 26, 05:59 UTCMay 26, 09:29 UTC3h 30m
2026-05-25 AHY071 GYD → VIE May 25, 13:55 UTCMay 26, 09:29 UTC19h 34m
2026-05-25 AHY8105 GYD → SAW May 25, 09:25 UTCMay 25, 10:45 UTC1h 20m
2026-05-24 AHY8105 GYD → SAW May 24, 13:20 UTCMay 25, 10:45 UTC21h 25m
2026-05-24 AHY074 CDG → GYD May 24, 11:20 UTCMay 25, 10:45 UTC23h 25m
2026-05-24 AHY074 CDG → GYD May 24, 10:25 UTCMay 24, 15:05 UTC4h 40m
2026-05-23 AHY073 GYD → CDG May 23, 13:45 UTCMay 24, 08:40 UTC18h 56m
2026-05-23 AHY073 GYD → CDG May 23, 11:20 UTCMay 24, 08:40 UTC21h 21m
2026-05-23 AHY073 GYD → CDG May 23, 10:00 UTCMay 24, 08:40 UTC22h 40m
2026-05-23 AHY035 GYD → MXP May 23, 04:20 UTCMay 23, 08:20 UTC4h 0m
2026-05-22 AHY074 CDG → GYD May 22, 10:40 UTCMay 22, 15:15 UTC4h 35m
2026-05-21 AHY073 GYD → CDG May 21, 13:20 UTCMay 22, 08:35 UTC19h 15m
2026-05-21 AHY073 GYD → CDG May 21, 11:20 UTCMay 22, 08:35 UTC21h 15m
2026-05-21 AHY073 GYD → CDG May 21, 10:00 UTCMay 22, 08:35 UTC22h 35m
2026-05-21 AHY035 GYD → MXP May 21, 03:35 UTCMay 21, 07:45 UTC4h 10m
2026-05-17 AHY074 CDG → GYD May 17, 10:35 UTCMay 17, 15:05 UTC4h 30m
2026-05-16 AHY073 GYD → CDG May 16, 14:05 UTCMay 17, 09:00 UTC18h 55m
2026-05-16 AHY073 GYD → CDG May 16, 11:21 UTCMay 17, 09:00 UTC21h 40m
2026-05-16 AHY071 GYD → VIE May 16, 00:25 UTCMay 16, 09:31 UTC9h 6m
2026-05-15 AHY071 GYD → VIE May 15, 13:20 UTCMay 16, 09:31 UTC20h 10m
2026-05-15 AHY074 CDG → GYD May 15, 11:20 UTCMay 16, 09:31 UTC22h 10m
2026-05-15 AHY074 CDG → GYD May 15, 10:35 UTCMay 16, 09:16 UTC22h 40m
2026-05-14 AHY073 GYD → CDG May 14, 16:55 UTCMay 15, 09:00 UTC16h 5m
2026-05-14 AHY073 GYD → CDG May 14, 12:00 UTCMay 15, 09:00 UTC21h 0m
2026-05-14 AHY073 GYD → CDG May 14, 10:31 UTCMay 15, 09:00 UTC22h 30m
2026-05-14 AHY703 GYD → RMO May 14, 06:15 UTCMay 14, 07:35 UTC1h 20m
2026-05-13 AHY036 MXP → GYD May 13, 10:10 UTCMay 14, 00:45 UTC14h 35m
2026-05-12 AHY035 GYD → MXP May 12, 20:10 UTCMay 13, 08:10 UTC12h 0m
2026-05-12 AHY064 BER → GYD May 12, 09:50 UTCMay 12, 17:45 UTC7h 55m
2026-05-12 AHY063 GYD → BER May 12, 03:55 UTCMay 12, 08:20 UTC4h 25m
2026-05-10 AHY8003 GYD → ESB May 10, 16:25 UTCMay 10, 21:30 UTC5h 5m
2026-05-10 AHY064 BER → GYD May 10, 09:55 UTCMay 10, 13:35 UTC3h 40m
2026-05-09 AHY063 GYD → BER May 9, 13:40 UTCMay 10, 08:20 UTC18h 40m
2026-05-09 AHY063 GYD → BER May 9, 11:20 UTCMay 10, 08:20 UTC21h 0m
2026-05-09 AHY071 GYD → VIE May 9, 06:10 UTCMay 9, 09:45 UTC3h 35m
2026-05-08 AHY071 GYD → VIE May 8, 13:55 UTCMay 9, 09:45 UTC19h 50m
2026-05-08 AHY071 GYD → VIE May 8, 11:19 UTCMay 9, 09:45 UTC22h 25m
2026-05-08 AHY071 GYD → VIE May 8, 11:14 UTCMay 9, 09:15 UTC22h 0m
2026-05-08 AHY071 GYD → VIE May 8, 05:59 UTCMay 8, 09:39 UTC3h 40m
2026-05-07 AHY8003 GYD → ESB May 7, 17:00 UTCMay 7, 22:05 UTC5h 5m

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

Mode-S 503D75 frequently asked

What is Mode-S code 503D75?
503D75 is an ICAO 24-bit transponder address. Allocated to Lithuania. Assigned to LY-MHL.
Where is Mode-S 503D75 registered?
Mode-S code 503D75 is allocated to Lithuania (LT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 503D75 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 503D75, octal 24036565, decimal 5,258,613.
What flights does 503D75 operate?
Mode-S 503D75 has broadcast 20 distinct callsigns, including AHY073, AHY071, AHY074, AHY035, AHY064.