Apparatus

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sensors Mode-S transponder

15203D

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73789 · AIRBUS A-330-300

Hex
15203D
Octal
05220075
Decimal
1,384,509
Country
RU
Tail
RA-73789
Type
A333
No current signal · last broadcast Jul 26, 09:40 UTC
Flights observed
157
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 09:40 UTC

Last known position

Most recent position reported by Mode-S 15203D.

Country allocation

The ICAO 24-bit address 15203D falls within the block assigned to Russia (RU) by ICAO Annex 10, Volume III. Every aircraft registered in Russia 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
AFL733 Aeroflot Russian Airlines 21 2026-07-23
AFL734 Aeroflot Russian Airlines 13 2026-07-24
AFL832 - 10 2026-06-27
AFL735 Aeroflot Russian Airlines 9 2026-07-25
AFL643 Aeroflot Russian Airlines 7 2026-06-03
AFL642 Aeroflot Russian Airlines 7 2026-06-03
AFL626 - 7 2026-07-06
AFL732 Aeroflot Russian Airlines 5 2026-07-26
AFL628 - 5 2026-07-05
AFL233 - 5 2026-07-14
AFL629 - 4 2026-07-06
AFL621 Aeroflot Russian Airlines 4 2026-04-17
AFL232 - 4 2026-07-13
AFL861 Aeroflot Russian Airlines 3 2026-05-11
AFL637 Aeroflot Russian Airlines 3 2026-06-05
AFL627 - 3 2026-07-05
AFL620 Aeroflot Russian Airlines 3 2026-04-17
AFL2983 Aeroflot Russian Airlines 3 2026-07-23
AFL040 Aeroflot Russian Airlines 3 2026-07-17
AFL865 Aeroflot Russian Airlines 2 2026-05-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFL732 LED → HRG Jul 26, 03:55 UTCJul 26, 09:40 UTC5h 46m
2026-07-25 AFL732 LED → HRG Jul 25, 11:20 UTCJul 26, 09:40 UTC22h 21m
2026-07-25 AFL735 SSH → LED Jul 25, 10:30 UTCJul 26, 09:15 UTC22h 46m
2026-07-24 AFL734 LED → SSH Jul 24, 13:55 UTCJul 25, 07:25 UTC17h 30m
2026-07-23 AFL2983 VVO → LED Jul 23, 23:15 UTCJul 24, 14:40 UTC15h 25m
2026-07-23 AFL733 HRG → LED Jul 23, 15:30 UTCJul 23, 16:00 UTC30m
2026-07-23 AFL733 HRG → LED Jul 23, 05:25 UTCJul 23, 12:40 UTC7h 15m
2026-07-22 AFL733 HRG → LED Jul 22, 13:50 UTCJul 23, 12:40 UTC22h 50m
2026-07-22 AFL734 - Jul 22, 03:35 UTCJul 22, 03:50 UTC15m
2026-07-21 AFL733 HRG → LED Jul 21, 05:00 UTCJul 21, 12:05 UTC7h 5m
2026-07-19 AFL2983 VVO → LED Jul 19, 13:35 UTCJul 19, 15:10 UTC1h 35m
2026-07-17 AFL040 SVO → LED Jul 17, 15:55 UTCJul 17, 16:24 UTC30m
2026-07-16 AFL733 - Jul 16, 12:40 UTCJul 16, 19:25 UTC6h 45m
2026-07-14 AFL233 - Jul 14, 02:40 UTCJul 14, 03:20 UTC40m
2026-07-13 AFL232 - Jul 13, 23:45 UTCJul 14, 00:45 UTC1h 0m
2026-07-12 AFL295 - Jul 12, 00:45 UTCJul 12, 14:45 UTC14h 0m
2026-07-11 AFL293 - Jul 11, 14:30 UTCJul 11, 15:00 UTC30m
2026-07-11 AFL293 - Jul 11, 00:05 UTCJul 11, 09:20 UTC9h 15m
2026-07-07 AFL025 - Jul 7, 18:55 UTCJul 7, 19:05 UTC10m
2026-07-06 AFL629 - Jul 6, 22:15 UTCJul 7, 09:35 UTC11h 20m
2026-07-06 AFL626 - Jul 6, 09:20 UTCJul 7, 09:15 UTC23h 55m
2026-07-06 AFL626 - Jul 6, 07:50 UTCJul 7, 07:15 UTC23h 25m
2026-07-05 AFL627 - Jul 5, 23:20 UTCJul 6, 23:15 UTC23h 55m
2026-07-05 AFL628 - Jul 5, 17:40 UTCJul 5, 17:55 UTC15m
2026-07-05 AFL733 - Jul 5, 04:05 UTCJul 5, 11:30 UTC7h 25m
2026-07-04 AFL732 - Jul 4, 23:30 UTCJul 5, 00:40 UTC1h 10m
2026-07-04 AFL735 - Jul 4, 09:55 UTCJul 4, 11:20 UTC1h 25m
2026-07-04 AFL734 - Jul 4, 05:55 UTCJul 4, 07:20 UTC1h 25m
2026-07-04 AFL734 - Jul 4, 01:20 UTCJul 4, 01:40 UTC20m
2026-07-02 AFL2983 - Jul 2, 23:15 UTCJul 3, 14:35 UTC15h 20m
2026-07-02 AFL733 - Jul 2, 04:40 UTCJul 2, 23:15 UTC18h 35m
2026-07-01 AFL040 SVO → LED Jul 1, 15:40 UTCJul 1, 15:55 UTC15m
2026-07-01 AFL233 - Jul 1, 02:45 UTCJul 1, 03:25 UTC40m
2026-06-28 AFL655 - Jun 28, 12:29 UTCJun 29, 04:30 UTC16h 0m
2026-06-28 AFL650 - Jun 28, 02:54 UTCJun 28, 09:10 UTC6h 15m
2026-06-27 AFL832 - Jun 27, 09:00 UTCJun 27, 23:00 UTC14h 0m
2026-06-27 AFL832 - Jun 27, 02:50 UTCJun 27, 23:00 UTC20h 10m
2026-06-26 AFL832 - Jun 26, 23:44 UTCJun 27, 23:00 UTC23h 15m
2026-06-26 AFL832 - Jun 26, 19:20 UTCJun 27, 17:59 UTC22h 40m
2026-06-26 AFL832 - Jun 26, 18:49 UTCJun 27, 12:19 UTC17h 30m
2026-06-26 AFL830 - Jun 26, 13:59 UTCJun 27, 12:19 UTC22h 20m
2026-06-26 AFL651 - Jun 26, 03:29 UTCJun 26, 10:05 UTC6h 35m
2026-06-25 AFL654 - Jun 25, 23:49 UTCJun 26, 00:15 UTC25m
2026-06-25 AFL655 - Jun 25, 09:10 UTCJun 25, 23:14 UTC14h 5m
2026-06-25 AFL650 - Jun 25, 00:09 UTCJun 25, 06:30 UTC6h 20m
2026-06-24 AFL832 - Jun 24, 06:39 UTCJun 24, 19:39 UTC13h 0m
2026-06-23 AFL832 - Jun 23, 23:59 UTCJun 24, 19:39 UTC19h 40m
2026-06-23 AFL832 - Jun 23, 21:20 UTCJun 24, 19:39 UTC22h 20m
2026-06-23 AFL832 - Jun 23, 20:54 UTCJun 24, 19:15 UTC22h 20m
2026-06-23 AFL832 - Jun 23, 14:44 UTCJun 24, 10:04 UTC19h 20m

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 RA-73789 page for operator, model, and routing details .

Mode-S 15203D frequently asked

What is Mode-S code 15203D?
15203D is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73789.
Where is Mode-S 15203D registered?
Mode-S code 15203D is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 15203D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 09:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 15203D, octal 05220075, decimal 1,384,509.
What flights does 15203D operate?
Mode-S 15203D has broadcast 20 distinct callsigns, including AFL733, AFL734, AFL832, AFL735, AFL643.