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 3h ago
Flights observed
174
Distinct callsigns
20
Country
RU
Last broadcast
3h 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
AFL320 - 24 2026-06-26
AFL321 - 22 2026-06-26
AFL205 - 20 2026-07-12
AFL221 - 19 2026-07-10
AFL204 - 19 2026-07-12
AFL220 - 7 2026-07-10
AFL232 - 6 2026-07-05
AFL208 - 6 2026-07-09
AFL233 - 5 2026-07-06
AFL209 - 5 2026-07-10
AFL585 Aeroflot Russian Airlines 3 2026-05-01
AFL1719 - 3 2026-07-13
AFL325 - 2 2026-04-13
AFL273 Aeroflot Russian Airlines 2 2026-06-09
AFL272 Aeroflot Russian Airlines 2 2026-06-09
AFL2701 Aeroflot Russian Airlines 2 2026-05-11
AFL2700 Aeroflot Russian Airlines 2 2026-05-11
AFL1744 Aeroflot Russian Airlines 2 2026-05-30
AFL1713 Aeroflot Russian Airlines 2 2026-06-20
AFL1704 - 2 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFL1712 SVO → SVO Jul 14, 20:25 UTCJul 14, 20:45 UTC20m
2026-07-14 AFL1709 - Jul 14, 15:15 UTCJul 14, 16:35 UTC1h 20m
2026-07-13 AFL1719 - Jul 13, 08:25 UTCJul 13, 08:35 UTC10m
2026-07-13 AFL1719 - Jul 13, 06:30 UTCJul 13, 07:45 UTC1h 15m
2026-07-12 AFL205 - Jul 12, 07:20 UTCJul 13, 06:45 UTC23h 25m
2026-07-12 AFL205 - Jul 12, 04:20 UTCJul 12, 08:05 UTC3h 45m
2026-07-12 AFL204 - Jul 12, 01:15 UTCJul 12, 01:25 UTC10m
2026-07-11 AFL204 - Jul 11, 22:01 UTCJul 11, 22:40 UTC40m
2026-07-11 AFL204 SVO → SVO Jul 11, 18:45 UTCJul 11, 19:00 UTC15m
2026-07-10 AFL221 - Jul 10, 20:05 UTCJul 11, 09:20 UTC13h 15m
2026-07-10 AFL220 - Jul 10, 08:50 UTCJul 11, 08:45 UTC23h 55m
2026-07-10 AFL209 - Jul 10, 08:40 UTCJul 10, 20:40 UTC12h 0m
2026-07-09 AFL209 - Jul 9, 20:50 UTCJul 10, 20:40 UTC23h 50m
2026-07-09 AFL208 - Jul 9, 17:40 UTCJul 9, 17:55 UTC15m
2026-07-08 AFL221 - Jul 8, 20:40 UTCJul 9, 10:25 UTC13h 45m
2026-07-08 AFL220 SVO → SVO Jul 8, 17:30 UTCJul 8, 17:55 UTC25m
2026-07-07 AFL221 - Jul 7, 19:55 UTCJul 8, 10:20 UTC14h 25m
2026-07-07 AFL221 - Jul 7, 08:50 UTCJul 7, 20:30 UTC11h 40m
2026-07-06 AFL220 - Jul 6, 20:05 UTCJul 7, 09:30 UTC13h 25m
2026-07-06 AFL233 - Jul 6, 02:30 UTCJul 6, 20:45 UTC18h 15m
2026-07-05 AFL232 - Jul 5, 23:25 UTCJul 6, 00:10 UTC45m
2026-07-05 AFL232 SVO → SVO Jul 5, 18:45 UTCJul 5, 19:15 UTC30m
2026-07-04 AFL1719 KHV → SVO Jul 4, 16:25 UTCJul 5, 08:10 UTC15h 45m
2026-07-03 AFL1701 - Jul 3, 05:20 UTCJul 3, 06:40 UTC1h 20m
2026-07-02 AFL1701 - Jul 2, 07:20 UTCJul 3, 06:40 UTC23h 20m
2026-07-01 AFL205 - Jul 1, 04:35 UTCJul 1, 08:30 UTC3h 55m
2026-07-01 AFL204 - Jul 1, 01:55 UTCJul 1, 02:05 UTC10m
2026-06-30 AFL221 - Jun 30, 09:10 UTCJun 30, 23:20 UTC14h 10m
2026-06-29 AFL221 - Jun 29, 20:15 UTCJun 30, 09:55 UTC13h 41m
2026-06-27 AFL1704 - Jun 27, 16:55 UTCJun 27, 17:04 UTC10m
2026-06-27 AFL1704 SVO → SVO Jun 27, 15:55 UTCJun 27, 16:20 UTC25m
2026-06-27 AFL205 - Jun 27, 04:05 UTCJun 27, 07:49 UTC3h 45m
2026-06-27 AFL204 - Jun 27, 00:55 UTCJun 27, 01:09 UTC15m
2026-06-26 AFL321 - Jun 26, 02:50 UTCJun 26, 22:19 UTC19h 30m
2026-06-26 AFL320 - Jun 26, 01:24 UTCJun 26, 22:19 UTC20h 55m
2026-06-26 AFL320 - Jun 26, 00:24 UTCJun 26, 22:19 UTC21h 55m
2026-06-25 AFL320 - Jun 25, 21:10 UTCJun 26, 13:55 UTC16h 45m
2026-06-25 AFL320 - Jun 25, 12:50 UTCJun 26, 09:14 UTC20h 25m
2026-06-25 AFL320 - Jun 25, 12:44 UTCJun 26, 09:14 UTC20h 30m
2026-06-25 AFL1002 - Jun 25, 07:59 UTCJun 25, 09:59 UTC2h 0m
2026-06-22 AFL208 - Jun 22, 20:49 UTCJun 23, 09:59 UTC13h 10m
2026-06-20 AFL1713 KHV → SVO Jun 20, 11:25 UTCJun 20, 12:39 UTC1h 15m
2026-06-19 AFL321 - Jun 19, 00:14 UTCJun 19, 15:09 UTC14h 55m
2026-06-18 AFL321 - Jun 18, 15:05 UTCJun 18, 15:30 UTC25m
2026-06-18 AFL320 - Jun 18, 00:25 UTCJun 18, 13:35 UTC13h 10m
2026-06-17 AFL320 - Jun 17, 13:50 UTCJun 18, 10:10 UTC20h 20m
2026-06-17 AFL320 - Jun 17, 10:25 UTCJun 18, 08:45 UTC22h 20m
2026-06-17 AFL320 - Jun 17, 07:45 UTCJun 18, 04:00 UTC20h 15m
2026-06-17 AFL320 - Jun 17, 02:50 UTCJun 18, 02:15 UTC23h 25m
2026-06-17 AFL320 - Jun 17, 02:05 UTCJun 18, 00:30 UTC22h 25m

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 3h 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 AFL320, AFL321, AFL205, AFL221, AFL204.