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sensors Mode-S transponder

503D6F

ICAO 24-bit transponder address · allocated to Lithuania

Currently assigned to LY-HMD · AIRBUS A-320

Hex
503D6F
Octal
24036557
Decimal
5,258,607
Country
LT
Tail
LY-HMD
Type
A320
Broadcasting now · callsign AHY024 · 33,000 ft
Flights observed
171
Distinct callsigns
20
Country
LT
Last broadcast
1h ago

Current position

503D6F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 503D6F 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
AHY035 Azerbaijan Airlines 22 2026-06-01
AHY109 - 21 2026-07-11
AHY036 Azerbaijan Airlines 15 2026-06-01
AHY071 - 14 2026-07-04
AHY025 - 9 2026-07-12
AHY8105 - 8 2026-06-23
AHY110 - 8 2026-07-11
AHY072 - 7 2026-07-04
AHY8003 Azerbaijan Airlines 6 2026-05-26
AHY061 - 4 2026-07-13
AHY026 - 4 2026-07-09
AHY8225 - 3 2026-07-13
AHY8224 - 3 2026-06-22
AHY8106 - 3 2026-06-23
AHY704 - 3 2026-07-07
AHY077 - 3 2026-07-03
AHY8226 - 2 2026-07-13
AHY8223 - 2 2026-06-21
AHY8041 - 2 2026-07-05
AHY8004 Azerbaijan Airlines 2 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AHY023 - Jul 13, 22:25 UTCJul 14, 09:00 UTC10h 35m
2026-07-13 AHY8237 - Jul 13, 20:25 UTCJul 13, 21:05 UTC40m
2026-07-13 AHY8226 - Jul 13, 17:40 UTCJul 13, 18:05 UTC25m
2026-07-13 AHY8225 - Jul 13, 15:45 UTCJul 13, 16:20 UTC35m
2026-07-13 AHY062 - Jul 13, 08:01 UTCJul 13, 09:55 UTC1h 55m
2026-07-13 AHY061 - Jul 13, 04:05 UTCJul 13, 06:25 UTC2h 20m
2026-07-12 AHY061 - Jul 12, 09:50 UTCJul 13, 06:25 UTC20h 35m
2026-07-12 AHY061 - Jul 12, 08:20 UTCJul 13, 06:25 UTC22h 5m
2026-07-12 AHY025 - Jul 12, 04:30 UTCJul 12, 06:55 UTC2h 25m
2026-07-11 AHY110 - Jul 11, 12:35 UTCJul 11, 15:50 UTC3h 15m
2026-07-11 AHY109 - Jul 11, 06:25 UTCJul 11, 10:40 UTC4h 15m
2026-07-10 AHY109 - Jul 10, 09:50 UTCJul 11, 07:55 UTC22h 5m
2026-07-10 AHY062 - Jul 10, 08:40 UTCJul 11, 07:45 UTC23h 5m
2026-07-10 AHY061 - Jul 10, 04:30 UTCJul 10, 06:55 UTC2h 25m
2026-07-09 AHY026 - Jul 9, 08:10 UTCJul 9, 09:55 UTC1h 45m
2026-07-08 AHY025 - Jul 8, 15:30 UTCJul 9, 06:50 UTC15h 20m
2026-07-08 AHY125 - Jul 8, 13:30 UTCJul 8, 14:05 UTC35m
2026-07-08 AHY028 - Jul 8, 06:40 UTCJul 8, 12:45 UTC6h 5m
2026-07-07 AHY027 - Jul 7, 16:55 UTCJul 8, 05:00 UTC12h 5m
2026-07-07 AHY704 - Jul 7, 10:45 UTCJul 7, 13:20 UTC2h 35m
2026-07-07 AHY703 - Jul 7, 06:30 UTCJul 7, 09:15 UTC2h 45m
2026-07-06 AHY026 - Jul 6, 08:15 UTCJul 6, 10:00 UTC1h 45m
2026-07-05 AHY025 - Jul 5, 11:50 UTCJul 6, 07:00 UTC19h 10m
2026-07-05 AHY025 - Jul 5, 10:20 UTCJul 6, 07:00 UTC20h 40m
2026-07-05 AHY8041 - Jul 5, 06:00 UTCJul 5, 08:25 UTC2h 25m
2026-07-04 AHY072 - Jul 4, 11:40 UTCJul 4, 14:40 UTC3h 0m
2026-07-04 AHY071 - Jul 4, 06:30 UTCJul 4, 10:20 UTC3h 50m
2026-07-03 AHY078 - Jul 3, 20:30 UTCJul 3, 22:20 UTC1h 50m
2026-07-03 AHY077 - Jul 3, 16:15 UTCJul 3, 17:40 UTC1h 25m
2026-07-03 AHY704 - Jul 3, 10:55 UTCJul 3, 13:10 UTC2h 15m
2026-07-02 AHY026 - Jul 2, 08:35 UTCJul 3, 07:45 UTC23h 10m
2026-07-01 AHY025 - Jul 1, 15:20 UTCJul 2, 07:25 UTC16h 5m
2026-07-01 AHY125 - Jul 1, 06:50 UTCJul 1, 14:00 UTC7h 10m
2026-07-01 AHY027 - Jul 1, 02:30 UTCJul 1, 04:55 UTC2h 25m
2026-06-25 AHY026 - Jun 25, 08:20 UTCJun 25, 10:09 UTC1h 50m
2026-06-25 AHY025 - Jun 25, 04:29 UTCJun 25, 06:55 UTC2h 25m
2026-06-24 AHY8042 - Jun 24, 10:19 UTCJun 24, 12:14 UTC1h 55m
2026-06-23 AHY8041 - Jun 23, 14:04 UTCJun 24, 08:30 UTC18h 25m
2026-06-23 AHY8106 - Jun 23, 13:19 UTCJun 24, 08:30 UTC19h 10m
2026-06-23 AHY8105 - Jun 23, 09:45 UTCJun 23, 12:05 UTC2h 20m
2026-06-22 AHY8234 - Jun 22, 13:10 UTCJun 22, 13:35 UTC25m
2026-06-22 AHY8233 - Jun 22, 11:09 UTCJun 22, 11:39 UTC30m
2026-06-22 AHY8224 - Jun 22, 08:10 UTCJun 22, 08:40 UTC30m
2026-06-21 AHY8228 BUS → GYD Jun 21, 12:55 UTCJun 22, 06:49 UTC17h 55m
2026-06-21 AHY8227 - Jun 21, 10:49 UTCJun 21, 11:49 UTC1h 0m
2026-06-21 AHY8224 - Jun 21, 07:59 UTCJun 21, 08:25 UTC25m
2026-06-21 AHY8223 - Jun 21, 06:10 UTCJun 21, 06:44 UTC35m
2026-06-20 AHY176 - Jun 20, 19:55 UTCJun 20, 21:44 UTC1h 50m
2026-06-20 AHY175 - Jun 20, 08:49 UTCJun 20, 18:14 UTC9h 25m
2026-06-20 AHY025 - Jun 20, 06:39 UTCJun 20, 07:09 UTC30m

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

Mode-S 503D6F frequently asked

What is Mode-S code 503D6F?
503D6F is an ICAO 24-bit transponder address. Allocated to Lithuania. Assigned to LY-HMD.
Where is Mode-S 503D6F registered?
Mode-S code 503D6F is allocated to Lithuania (LT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 503D6F broadcasting right now?
Yes. Mode-S 503D6F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 503D6F, octal 24036557, decimal 5,258,607.
What flights does 503D6F operate?
Mode-S 503D6F has broadcast 20 distinct callsigns, including AHY035, AHY109, AHY036, AHY071, AHY025.