Apparatus

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sensors Mode-S transponder

151DD3

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73171 · AIRBUS A-320

Hex
151DD3
Octal
05216723
Decimal
1,383,891
Country
RU
Tail
RA-73171
Type
A320
No current signal · last broadcast 4h ago
Flights observed
85
Distinct callsigns
20
Country
RU
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 151DD3.

Country allocation

The ICAO 24-bit address 151DD3 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
AFL601 Aeroflot Russian Airlines 4 2026-05-23
AFL641 Aeroflot Russian Airlines 3 2026-05-23
AFL600 Aeroflot Russian Airlines 3 2026-05-14
AFL1186 Aeroflot Russian Airlines 3 2026-05-06
AFL772 Aeroflot Russian Airlines 2 2026-05-03
AFL640 Aeroflot Russian Airlines 2 2026-05-23
AFL631 Aeroflot Russian Airlines 2 2026-05-27
AFL1985 Aeroflot Russian Airlines 2 2026-05-25
AFL1607 Aeroflot Russian Airlines 2 2026-05-24
AFL1606 Aeroflot Russian Airlines 2 2026-05-24
AFL1478 Aeroflot Russian Airlines 2 2026-04-20
AFL1437 Aeroflot Russian Airlines 2 2026-04-22
AFL1394 Aeroflot Russian Airlines 2 2026-05-25
AFL1177 Aeroflot Russian Airlines 2 2026-05-24
AFL007 - 2 2026-05-12
AFL006 - 2 2026-05-12
AFL795 Aeroflot Russian Airlines 1 2026-05-04
AFL794 Aeroflot Russian Airlines 1 2026-05-04
AFL793 Aeroflot Russian Airlines 1 2026-05-04
AFL792 Aeroflot Russian Airlines 1 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFL1936 SVO → KGF May 29, 23:30 UTCMay 30, 04:55 UTC5h 25m
2026-05-29 AFL1326 SVO → MMK May 29, 15:20 UTCMay 29, 15:40 UTC20m
2026-05-28 AFFL1419 - May 28, 15:05 UTCMay 28, 20:50 UTC5h 45m
2026-05-27 AFL631 IST → SVX May 27, 11:05 UTCMay 28, 05:50 UTC18h 45m
2026-05-27 AFL631 IST → SVX May 27, 10:10 UTCMay 28, 05:50 UTC19h 40m
2026-05-27 AFL630 SVX → IST May 27, 08:10 UTCMay 27, 08:20 UTC10m
2026-05-26 AFL1466 SVO → SVX May 26, 23:35 UTCMay 26, 23:54 UTC20m
2026-05-26 AFL1056 SVO → MCX May 26, 13:15 UTCMay 26, 13:54 UTC40m
2026-05-26 AFL1505 TJM → SVO May 26, 10:10 UTCMay 26, 10:50 UTC40m
2026-05-26 AFL1395 PEE → SVO May 26, 02:00 UTCMay 26, 02:29 UTC30m
2026-05-25 AFL1394 SVO → PEE May 25, 19:10 UTCMay 25, 19:30 UTC20m
2026-05-25 AFL1394 SVO → PEE May 25, 17:50 UTCMay 25, 18:10 UTC20m
2026-05-25 AFL1572 SVO → ESL May 25, 09:10 UTCMay 25, 09:40 UTC30m
2026-05-25 AFL1985 SKD → SVO May 25, 05:50 UTCMay 25, 06:15 UTC25m
2026-05-24 AFL1607 KUF → SVO May 24, 18:15 UTCMay 24, 18:25 UTC10m
2026-05-24 AFL1606 SVO → KUF May 24, 15:20 UTCMay 24, 16:30 UTC1h 10m
2026-05-24 AFL1177 AER → SVO May 24, 13:15 UTCMay 24, 13:20 UTC5m
2026-05-23 AFL641 IST → AER May 23, 14:35 UTCMay 23, 14:50 UTC15m
2026-05-23 AFL640 AER → IST May 23, 12:10 UTCMay 23, 12:25 UTC15m
2026-05-23 AFL601 EVN → AER May 23, 08:05 UTCMay 23, 08:50 UTC45m
2026-05-22 AFL1130 SVO → AER May 22, 16:45 UTCMay 22, 17:40 UTC55m
2026-05-20 AFL1431 BAX → SVO May 20, 23:00 UTCMay 21, 06:10 UTC7h 10m
2026-05-20 AFL1430 SVO → BAX May 20, 22:00 UTCMay 20, 22:25 UTC25m
2026-05-20 AFL1607 KUF → SVO May 20, 18:10 UTCMay 20, 18:20 UTC10m
2026-05-20 AFL1606 SVO → KUF May 20, 09:00 UTCMay 20, 15:55 UTC6h 55m
2026-05-19 AFL1531 TOF → SVO May 19, 01:50 UTCMay 19, 04:40 UTC2h 50m
2026-05-18 AFL1530 SVO → TOF May 18, 22:00 UTCMay 19, 00:25 UTC2h 25m
2026-05-18 AFL1951 CIT → SVO May 18, 04:25 UTCMay 18, 04:40 UTC15m
2026-05-17 AFL1950 SVO → CIT May 17, 21:20 UTCMay 17, 21:50 UTC30m
2026-05-16 AFL1773 - May 16, 22:50 UTCMay 17, 18:30 UTC19h 40m
2026-05-16 AFL2173 IST → SVO May 16, 20:50 UTCMay 17, 18:30 UTC21h 40m
2026-05-15 AFL1270 SVO → KZN May 15, 06:00 UTCMay 15, 16:55 UTC10h 54m
2026-05-14 AFL601 EVN → AER May 14, 09:00 UTCMay 14, 09:40 UTC40m
2026-05-14 AFL600 ICN → SVO May 14, 07:00 UTCMay 14, 07:15 UTC15m
2026-05-13 AFL641 IST → AER May 13, 15:55 UTCMay 13, 16:05 UTC10m
2026-05-13 AFL601 EVN → AER May 13, 08:05 UTCMay 13, 08:45 UTC40m
2026-05-13 AFL600 ICN → SVO May 13, 06:10 UTCMay 13, 06:20 UTC10m
2026-05-12 AFL1642 SVO → ASF May 12, 10:30 UTCMay 12, 10:55 UTC25m
2026-05-12 AFL007 LED → LED May 12, 06:50 UTCMay 12, 07:55 UTC1h 5m
2026-05-12 AFL006 SVO → SVO May 12, 04:25 UTCMay 12, 05:25 UTC1h 0m
2026-05-10 AFL1991 EVN → SVO May 10, 15:49 UTCMay 10, 16:50 UTC1h 0m
2026-05-10 AFL1990 SVO → EVN May 10, 11:15 UTCMay 10, 11:30 UTC15m
2026-05-09 AFL641 IST → AER May 9, 17:15 UTCMay 9, 17:25 UTC10m
2026-05-09 AFL640 AER → IST May 9, 14:00 UTCMay 9, 14:35 UTC35m
2026-05-09 AFL601 EVN → AER May 9, 08:40 UTCMay 9, 09:30 UTC50m
2026-05-09 AFL600 ICN → SVO May 9, 06:20 UTCMay 9, 07:05 UTC45m
2026-05-09 AFL2697 - May 9, 02:40 UTCMay 9, 02:50 UTC10m
2026-05-07 AFL685 EVN → SVX May 7, 17:00 UTCMay 7, 17:25 UTC25m
2026-05-06 AFL1186 SVO → VOG May 6, 17:25 UTCMay 6, 17:40 UTC14m
2026-05-06 AFL1186 SVO → VOG May 6, 14:40 UTCMay 6, 15:10 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 RA-73171 page for operator, model, and routing details .

Mode-S 151DD3 frequently asked

What is Mode-S code 151DD3?
151DD3 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73171.
Where is Mode-S 151DD3 registered?
Mode-S code 151DD3 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DD3 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 151DD3, octal 05216723, decimal 1,383,891.
What flights does 151DD3 operate?
Mode-S 151DD3 has broadcast 20 distinct callsigns, including AFL601, AFL641, AFL600, AFL1186, AFL772.