sensors Mode-S transponder

15203C

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73788 · AIRBUS A-330-300

Hex
15203C
Octal
05220074
Decimal
1,384,508
Country
RU
Tail
RA-73788
Type
A333
No current signal · last broadcast 1d ago
Flights observed
126
Distinct callsigns
20
Country
RU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 15203C.

Country allocation

The ICAO 24-bit address 15203C 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
AFL627 Aeroflot Russian Airlines 9 2026-06-12
AFL628 Aeroflot Russian Airlines 7 2026-05-10
AFL865 - 6 2026-07-11
AFL629 Aeroflot Russian Airlines 6 2026-05-11
AFL233 - 6 2026-06-24
AFL733 Aeroflot Russian Airlines 5 2026-05-10
AFL860 - 4 2026-07-11
AFL832 - 4 2026-06-20
AFL831 Aeroflot Russian Airlines 4 2026-05-02
AFL232 - 4 2026-06-23
AFL1471 Aeroflot Russian Airlines 4 2026-05-26
AFL863 - 3 2026-07-13
AFL861 - 3 2026-07-11
AFL830 - 3 2026-06-19
AFL650 - 3 2026-06-21
AFL294 Aeroflot Russian Airlines 3 2026-04-25
AFL225 Aeroflot Russian Airlines 3 2026-06-11
AFL224 Aeroflot Russian Airlines 3 2026-06-10
AFL1411 Aeroflot Russian Airlines 3 2026-05-24
AFL864 - 2 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AFL863 - Jul 13, 03:30 UTCJul 13, 18:50 UTC15h 20m
2026-07-12 AFL864 - Jul 12, 03:45 UTCJul 12, 19:25 UTC15h 40m
2026-07-11 AFL865 - Jul 11, 19:55 UTCJul 12, 14:50 UTC18h 55m
2026-07-11 AFL865 - Jul 11, 15:05 UTCJul 12, 14:50 UTC23h 45m
2026-07-11 AFL865 - Jul 11, 14:55 UTCJul 12, 04:20 UTC13h 25m
2026-07-11 AFL860 - Jul 11, 11:05 UTCJul 11, 11:25 UTC20m
2026-07-11 AFL861 - Jul 11, 03:50 UTCJul 11, 07:20 UTC3h 30m
2026-07-09 AFL864 - Jul 9, 14:00 UTCJul 10, 04:05 UTC14h 5m
2026-07-09 AFL865 - Jul 9, 04:15 UTCJul 9, 14:30 UTC10h 15m
2026-07-08 AFL860 - Jul 8, 14:45 UTCJul 8, 19:40 UTC4h 55m
2026-07-08 AFL860 - Jul 8, 11:05 UTCJul 8, 11:15 UTC10m
2026-07-08 AFL010 - Jul 8, 08:00 UTCJul 8, 08:15 UTC15m
2026-07-06 AFL213 - Jul 6, 11:55 UTCJul 6, 12:40 UTC45m
2026-07-06 AFL213 - Jul 6, 06:45 UTCJul 6, 07:00 UTC15m
2026-07-05 AFL212 - Jul 5, 22:20 UTCJul 6, 04:50 UTC6h 30m
2026-07-05 AFL212 SVO → SVO Jul 5, 19:00 UTCJul 5, 19:20 UTC20m
2026-07-03 AFL861 - Jul 3, 23:20 UTCJul 4, 17:10 UTC17h 50m
2026-07-03 AFL863 - Jul 3, 06:25 UTCJul 3, 23:55 UTC17h 30m
2026-07-02 AFL863 - Jul 2, 22:00 UTCJul 3, 12:15 UTC14h 15m
2026-07-02 AFL865 - Jul 2, 04:50 UTCJul 2, 22:35 UTC17h 45m
2026-07-01 AFL865 - Jul 1, 23:45 UTCJul 2, 22:35 UTC22h 50m
2026-07-01 AFL860 - Jul 1, 14:30 UTCJul 1, 19:45 UTC5h 15m
2026-06-27 AFL855 - Jun 27, 19:34 UTCJun 28, 00:59 UTC5h 25m
2026-06-27 AFL854 - Jun 27, 11:25 UTCJun 27, 16:35 UTC5h 10m
2026-06-24 AFL233 - Jun 24, 02:40 UTCJun 24, 03:19 UTC40m
2026-06-23 AFL232 - Jun 23, 02:34 UTCJun 24, 00:05 UTC21h 30m
2026-06-22 AFL1725 KHV → SVO Jun 22, 03:10 UTCJun 22, 19:19 UTC16h 10m
2026-06-21 AFL655 - Jun 21, 12:10 UTCJun 22, 04:30 UTC16h 20m
2026-06-21 AFL650 - Jun 21, 03:14 UTCJun 21, 09:29 UTC6h 15m
2026-06-20 AFL832 - Jun 20, 09:05 UTCJun 20, 23:10 UTC14h 5m
2026-06-20 AFL832 - Jun 20, 02:44 UTCJun 20, 23:10 UTC20h 25m
2026-06-19 AFL832 - Jun 19, 19:04 UTCJun 20, 18:04 UTC23h 0m
2026-06-19 AFL832 - Jun 19, 18:44 UTCJun 20, 12:30 UTC17h 45m
2026-06-19 AFL830 - Jun 19, 14:04 UTCJun 20, 12:30 UTC22h 25m
2026-06-12 AFL837 SVO → LED Jun 12, 21:00 UTCJun 13, 12:20 UTC15h 19m
2026-06-12 AFL836 KUF → SVO Jun 12, 09:05 UTCJun 13, 07:05 UTC21h 59m
2026-06-12 AFL627 HKT → SVX Jun 12, 07:05 UTCJun 13, 07:00 UTC23h 54m
2026-06-11 AFL627 HKT → SVX Jun 11, 23:05 UTCJun 12, 21:35 UTC22h 31m
2026-06-11 AFL627 HKT → SVX Jun 11, 22:45 UTCJun 12, 21:00 UTC22h 16m
2026-06-11 AFL1404 SVO → SVX Jun 11, 12:50 UTCJun 11, 13:10 UTC20m
2026-06-11 AFL225 SVO → ATH Jun 11, 07:10 UTCJun 11, 07:20 UTC10m
2026-06-11 AFL225 SVO → ATH Jun 11, 02:50 UTCJun 11, 03:25 UTC35m
2026-06-10 AFL224 SVO → SYX Jun 10, 14:00 UTCJun 10, 19:05 UTC5h 5m
2026-06-10 AFL224 SVO → SYX Jun 10, 10:20 UTCJun 10, 10:40 UTC20m
2026-06-08 AFL861 SYX → LED Jun 8, 19:05 UTCJun 9, 13:45 UTC18h 40m
2026-06-08 AFL862 KZN → SYX Jun 8, 18:40 UTCJun 9, 13:45 UTC19h 5m
2026-06-08 AFL1780 SVO → STW Jun 8, 12:55 UTCJun 8, 13:15 UTC20m
2026-06-04 AFL637 HKT → OVB Jun 4, 04:25 UTCJun 4, 11:20 UTC6h 55m
2026-06-01 AFL634 KJA → HKT Jun 1, 09:05 UTCJun 2, 04:55 UTC19h 50m
2026-06-01 AFL635 HKT → KJA Jun 1, 07:55 UTCJun 2, 04:55 UTC21h 0m

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-73788 page for operator, model, and routing details .

Mode-S 15203C frequently asked

What is Mode-S code 15203C?
15203C is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73788.
Where is Mode-S 15203C registered?
Mode-S code 15203C is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 15203C broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 15203C, octal 05220074, decimal 1,384,508.
What flights does 15203C operate?
Mode-S 15203C has broadcast 20 distinct callsigns, including AFL627, AFL628, AFL865, AFL629, AFL233.