Apparatus

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sensors Mode-S transponder

151DB3

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73139 · BOEING 777-300ER

Hex
151DB3
Octal
05216663
Decimal
1,383,859
Country
RU
Tail
RA-73139
Type
B77W
No current signal · last broadcast 10h ago
Flights observed
92
Distinct callsigns
20
Country
RU
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 151DB3.

Country allocation

The ICAO 24-bit address 151DB3 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
AFL205 Aeroflot Russian Airlines 15 2026-05-29
AFL221 Aeroflot Russian Airlines 13 2026-05-22
AFL204 Aeroflot Russian Airlines 12 2026-05-29
AFL320 Aeroflot Russian Airlines 10 2026-05-21
AFL321 Aeroflot Russian Airlines 8 2026-05-21
AFL585 Aeroflot Russian Airlines 3 2026-05-01
AFL233 Aeroflot Russian Airlines 3 2026-05-16
AFL209 Aeroflot Russian Airlines 3 2026-05-27
AFL325 - 2 2026-04-13
AFL2701 Aeroflot Russian Airlines 2 2026-05-11
AFL2700 Aeroflot Russian Airlines 2 2026-05-11
AFL232 Aeroflot Russian Airlines 2 2026-05-12
AFL208 Aeroflot Russian Airlines 2 2026-05-27
AFL1703 Aeroflot Russian Airlines 2 2026-05-04
AFL284 Aeroflot Russian Airlines 1 2026-04-24
AFL225 Aeroflot Russian Airlines 1 2026-04-26
AFL224 Aeroflot Russian Airlines 1 2026-04-26
AFL220 Aeroflot Russian Airlines 1 2026-04-28
AFL1745 Aeroflot Russian Airlines 1 2026-05-30
AFL1744 Aeroflot Russian Airlines 1 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AFL1745 UUS → SVO May 30, 06:15 UTCMay 30, 06:35 UTC20m
2026-05-29 AFL1744 SVO → UUS May 29, 14:25 UTCMay 29, 14:45 UTC20m
2026-05-29 AFL205 PKX → SVO May 29, 03:55 UTCMay 29, 11:00 UTC7h 5m
2026-05-29 AFL204 SVO → PKX May 29, 01:00 UTCMay 29, 01:15 UTC15m
2026-05-28 AFL204 SVO → PKX May 28, 19:15 UTCMay 28, 22:30 UTC3h 15m
2026-05-28 AFL204 SVO → PKX May 28, 18:20 UTCMay 28, 18:35 UTC15m
2026-05-27 AFL209 PVG → SVO May 27, 18:50 UTCMay 28, 12:55 UTC18h 5m
2026-05-27 AFL209 PVG → SVO May 27, 18:40 UTCMay 28, 12:55 UTC18h 15m
2026-05-27 AFL208 SVO → PVG May 27, 17:35 UTCMay 27, 17:50 UTC15m
2026-05-26 AFL1731 PKC → SVO May 26, 07:05 UTCMay 26, 07:59 UTC55m
2026-05-25 AFL1730 SVO → PKC May 25, 13:50 UTCMay 25, 14:05 UTC15m
2026-05-24 AFL1715 KHV → SVO May 24, 20:05 UTCMay 25, 09:55 UTC13h 50m
2026-05-24 AFL1714 SVO → KHV May 24, 19:10 UTCMay 24, 19:25 UTC15m
2026-05-23 AFL205 PKX → SVO May 23, 21:20 UTCMay 24, 10:40 UTC13h 20m
2026-05-22 AFL221 CAN → SVO May 22, 20:30 UTCMay 23, 13:00 UTC16h 30m
2026-05-22 AFL221 CAN → SVO May 22, 18:15 UTCMay 23, 13:00 UTC18h 44m
2026-05-22 AFL205 PKX → SVO May 22, 04:05 UTCMay 22, 21:00 UTC16h 55m
2026-05-22 AFL204 SVO → PKX May 22, 01:00 UTCMay 22, 01:10 UTC10m
2026-05-21 AFL321 MLE → SVO May 21, 03:20 UTCMay 21, 22:20 UTC19h 0m
2026-05-21 AFL320 SVO → MLE May 21, 00:50 UTCMay 21, 22:20 UTC21h 30m
2026-05-20 AFL320 SVO → MLE May 20, 12:50 UTCMay 21, 10:35 UTC21h 45m
2026-05-20 AFL320 SVO → MLE May 20, 12:05 UTCMay 21, 10:35 UTC22h 30m
2026-05-20 AFL1016 SVO → KGD May 20, 08:55 UTCMay 20, 09:40 UTC45m
2026-05-18 AFL320 SVO → MLE May 18, 00:35 UTCMay 18, 14:00 UTC13h 25m
2026-05-17 AFL320 SVO → MLE May 17, 09:45 UTCMay 18, 07:20 UTC21h 35m
2026-05-17 AFL205 PKX → SVO May 17, 07:05 UTCMay 18, 04:00 UTC20h 55m
2026-05-16 AFL205 PKX → SVO May 16, 21:30 UTCMay 17, 10:20 UTC12h 50m
2026-05-16 AFL233 DEL → SVO May 16, 03:00 UTCMay 16, 22:10 UTC19h 10m
2026-05-15 AFL221 CAN → SVO May 15, 08:55 UTCMay 16, 00:15 UTC15h 19m
2026-05-14 AFL221 CAN → SVO May 14, 17:35 UTCMay 15, 12:10 UTC18h 35m
2026-05-14 AFL221 CAN → SVO May 14, 11:25 UTCMay 15, 09:45 UTC22h 20m
2026-05-14 AFL221 CAN → SVO May 14, 08:40 UTCMay 14, 20:25 UTC11h 45m
2026-05-13 AFL221 CAN → SVO May 13, 19:40 UTCMay 14, 18:00 UTC22h 20m
2026-05-13 AFL233 DEL → SVO May 13, 03:00 UTCMay 13, 20:10 UTC17h 10m
2026-05-12 AFL232 SVO → DEL May 12, 22:50 UTCMay 12, 23:30 UTC40m
2026-05-11 AFL321 MLE → SVO May 11, 14:50 UTCMay 12, 09:20 UTC18h 31m
2026-05-11 AFL2701 BJV → SVO May 11, 12:50 UTCMay 12, 09:20 UTC20h 31m
2026-05-11 AFL2701 BJV → SVO May 11, 12:40 UTCMay 12, 09:20 UTC20h 41m
2026-05-11 AFL2700 SVO → AYT May 11, 09:50 UTCMay 11, 10:15 UTC25m
2026-05-11 AFL2700 SVO → AYT May 11, 08:40 UTCMay 11, 09:05 UTC25m
2026-05-09 AFL1315 MRV → SVO May 9, 08:55 UTCMay 9, 09:15 UTC20m
2026-05-06 AFL221 CAN → SVO May 6, 13:10 UTCMay 6, 13:15 UTC5m
2026-05-05 AFL221 CAN → SVO May 5, 20:20 UTCMay 6, 12:15 UTC15h 55m
2026-05-05 AFL205 PKX → SVO May 5, 04:05 UTCMay 5, 20:50 UTC16h 45m
2026-05-05 AFL204 SVO → PKX May 5, 00:40 UTCMay 5, 00:50 UTC10m
2026-05-04 AFL1703 VVO → SVO May 4, 10:00 UTCMay 4, 22:10 UTC12h 11m
2026-05-03 AFL1703 VVO → SVO May 3, 18:05 UTCMay 4, 11:20 UTC17h 15m
2026-05-03 AFL1702 SVO → VVO May 3, 17:05 UTCMay 3, 17:20 UTC15m
2026-05-02 AFL320 SVO → MLE May 2, 00:15 UTCMay 2, 14:00 UTC13h 45m
2026-05-01 AFL320 SVO → MLE May 1, 10:50 UTCMay 2, 10:20 UTC23h 30m

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-73139 page for operator, model, and routing details .

Mode-S 151DB3 frequently asked

What is Mode-S code 151DB3?
151DB3 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73139.
Where is Mode-S 151DB3 registered?
Mode-S code 151DB3 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DB3 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DB3, octal 05216663, decimal 1,383,859.
What flights does 151DB3 operate?
Mode-S 151DB3 has broadcast 20 distinct callsigns, including AFL205, AFL221, AFL204, AFL320, AFL321.