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 Jul 26, 14:50 UTC
Flights observed
194
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 14:50 UTC

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 Aeroflot Russian Airlines 27 2026-07-25
AFL321 Aeroflot Russian Airlines 25 2026-07-26
AFL205 Aeroflot Russian Airlines 22 2026-07-18
AFL204 Aeroflot Russian Airlines 20 2026-07-18
AFL221 - 19 2026-07-10
AFL220 - 7 2026-07-10
AFL208 - 7 2026-07-15
AFL232 - 6 2026-07-05
AFL209 - 6 2026-07-15
AFL233 - 5 2026-07-06
AFL585 Aeroflot Russian Airlines 3 2026-05-01
AFL1731 Aeroflot Russian Airlines 3 2026-07-21
AFL1719 - 3 2026-07-13
AFL1713 - 3 2026-07-15
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
AFL1757 Aeroflot Russian Airlines 2 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFL321 MLE → SVO Jul 26, 14:10 UTCJul 26, 14:50 UTC40m
2026-07-25 AFL321 MLE → SVO Jul 25, 21:00 UTCJul 26, 13:35 UTC16h 36m
2026-07-25 AFL320 SVO → MLE Jul 25, 19:55 UTCJul 25, 20:20 UTC25m
2026-07-25 AFL321 MLE → SVO Jul 25, 00:30 UTCJul 25, 13:40 UTC13h 10m
2026-07-24 AFL320 SVO → MLE Jul 24, 12:50 UTCJul 25, 10:00 UTC21h 10m
2026-07-24 AFL320 SVO → MLE Jul 24, 12:25 UTCJul 25, 10:00 UTC21h 35m
2026-07-23 AFL1019 - Jul 23, 15:35 UTCJul 23, 16:55 UTC1h 20m
2026-07-23 AFL1018 SVO → KGD Jul 23, 12:05 UTCJul 23, 13:00 UTC55m
2026-07-21 AFL1731 PKC → SVO Jul 21, 06:30 UTCJul 21, 15:40 UTC9h 10m
2026-07-20 AFL1731 PKC → SVO Jul 20, 15:40 UTCJul 21, 07:10 UTC15h 29m
2026-07-20 AFL1730 - Jul 20, 14:10 UTCJul 20, 14:30 UTC20m
2026-07-18 AFL1757 VVO → SVO Jul 18, 15:25 UTCJul 19, 08:50 UTC17h 25m
2026-07-18 AFL1757 VVO → SVO Jul 18, 10:05 UTCJul 19, 08:45 UTC22h 40m
2026-07-18 AFL205 PKX → SVO Jul 18, 07:10 UTCJul 19, 06:45 UTC23h 35m
2026-07-18 AFL205 PKX → SVO Jul 18, 04:10 UTCJul 18, 15:35 UTC11h 25m
2026-07-18 AFL204 SVO → PKX Jul 18, 00:55 UTCJul 18, 01:10 UTC15m
2026-07-17 AFL1735 - Jul 17, 10:10 UTCJul 17, 22:20 UTC12h 10m
2026-07-15 AFL209 - Jul 15, 20:50 UTCJul 16, 13:05 UTC16h 15m
2026-07-15 AFL208 SVO → SVO Jul 15, 17:40 UTCJul 15, 18:00 UTC20m
2026-07-15 AFL1713 - Jul 15, 11:00 UTCJul 15, 13:10 UTC2h 10m
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

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 Jul 26, 14:50 UTC.
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, AFL204, AFL221.