Apparatus

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sensors Mode-S transponder

151DB2

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73138 · BOEING 777-300ER

Hex
151DB2
Octal
05216662
Decimal
1,383,858
Country
RU
Tail
RA-73138
Type
B77W
No current signal · last broadcast 9h ago
Flights observed
160
Distinct callsigns
20
Country
RU
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 151DB2.

Country allocation

The ICAO 24-bit address 151DB2 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
AFL209 Aeroflot Russian Airlines 22 2026-05-31
AFL221 - 13 2026-06-21
AFL204 - 10 2026-07-13
AFL1731 - 10 2026-06-20
AFL205 - 9 2026-07-13
AFL1730 Aeroflot Russian Airlines 9 2026-06-19
AFL220 Aeroflot Russian Airlines 7 2026-06-08
AFL1705 - 7 2026-07-09
AFL321 Aeroflot Russian Airlines 5 2026-04-27
AFL1745 - 4 2026-06-25
AFL1714 - 4 2026-07-03
AFL639 Aeroflot Russian Airlines 3 2026-04-24
AFL275 Aeroflot Russian Airlines 3 2026-04-18
AFL233 - 3 2026-07-11
AFL232 - 3 2026-07-10
AFL1722 - 3 2026-06-14
AFL1718 Aeroflot Russian Airlines 3 2026-06-18
AFL1715 - 3 2026-06-23
AFL638 Aeroflot Russian Airlines 2 2026-04-24
AFL320 Aeroflot Russian Airlines 2 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AFL1735 - Jul 13, 18:35 UTCJul 14, 11:35 UTC17h 0m
2026-07-13 AFL205 - Jul 13, 04:05 UTCJul 13, 11:25 UTC7h 20m
2026-07-13 AFL204 - Jul 13, 01:01 UTCJul 13, 01:15 UTC15m
2026-07-12 AFL1757 - Jul 12, 06:15 UTCJul 12, 22:30 UTC16h 15m
2026-07-11 AFL233 - Jul 11, 02:50 UTCJul 11, 03:30 UTC40m
2026-07-10 AFL232 - Jul 10, 07:05 UTCJul 11, 00:00 UTC16h 55m
2026-07-10 AFL205 - Jul 10, 04:05 UTCJul 10, 04:15 UTC10m
2026-07-10 AFL204 - Jul 10, 01:05 UTCJul 10, 01:20 UTC15m
2026-07-09 AFL1705 - Jul 9, 08:10 UTCJul 9, 22:25 UTC14h 15m
2026-07-08 AFL205 - Jul 8, 04:00 UTCJul 8, 07:40 UTC3h 40m
2026-07-07 AFL273 - Jul 7, 06:35 UTCJul 8, 01:00 UTC18h 25m
2026-07-07 AFL272 - Jul 7, 00:25 UTCJul 7, 04:20 UTC3h 55m
2026-07-06 AFL272 - Jul 6, 19:50 UTCJul 6, 20:20 UTC30m
2026-07-06 AFL1017 - Jul 6, 13:10 UTCJul 6, 14:10 UTC1h 0m
2026-07-06 AFL1016 - Jul 6, 09:40 UTCJul 6, 10:05 UTC25m
2026-07-05 AFL1010 - Jul 5, 16:25 UTCJul 5, 16:55 UTC30m
2026-07-03 AFL1714 - Jul 3, 20:45 UTCJul 4, 11:30 UTC14h 45m
2026-07-03 AFL1714 - Jul 3, 05:05 UTCJul 3, 21:45 UTC16h 40m
2026-07-02 AFL1723 - Jul 2, 15:00 UTCJul 3, 05:30 UTC14h 30m
2026-07-02 AFL1705 - Jul 2, 08:35 UTCJul 3, 05:30 UTC20h 55m
2026-07-02 AFL1705 - Jul 2, 08:20 UTCJul 3, 05:30 UTC21h 10m
2026-07-01 AFL1017 - Jul 1, 10:35 UTCJul 2, 09:35 UTC23h 0m
2026-07-01 AFL1016 - Jul 1, 07:45 UTCJul 1, 08:25 UTC40m
2026-06-30 AFL1713 - Jun 30, 13:10 UTCJun 30, 14:20 UTC1h 10m
2026-06-29 AFL1713 - Jun 29, 15:39 UTCJun 30, 14:20 UTC22h 41m
2026-06-28 AFL1010 - Jun 28, 16:14 UTCJun 28, 16:49 UTC35m
2026-06-26 AFL205 - Jun 26, 04:04 UTCJun 26, 07:39 UTC3h 35m
2026-06-26 AFL204 - Jun 26, 00:59 UTCJun 26, 01:15 UTC15m
2026-06-25 AFL1745 - Jun 25, 06:35 UTCJun 25, 22:14 UTC15h 40m
2026-06-24 AFL1745 - Jun 24, 15:24 UTCJun 25, 07:45 UTC16h 20m
2026-06-24 AFL1745 - Jun 24, 10:35 UTCJun 25, 07:45 UTC21h 10m
2026-06-24 AFL1745 - Jun 24, 10:25 UTCJun 25, 07:45 UTC21h 20m
2026-06-23 AFL1715 - Jun 23, 20:34 UTCJun 24, 15:29 UTC18h 55m
2026-06-23 AFL1714 - Jun 23, 19:24 UTCJun 24, 15:29 UTC20h 5m
2026-06-23 AFL1714 - Jun 23, 06:24 UTCJun 23, 20:34 UTC14h 10m
2026-06-22 AFL1744 SVO → UUS Jun 22, 15:45 UTCJun 23, 06:49 UTC15h 5m
2026-06-22 AFL1744 SVO → UUS Jun 22, 07:14 UTCJun 23, 06:29 UTC23h 15m
2026-06-22 AFL205 - Jun 22, 04:09 UTCJun 22, 16:50 UTC12h 40m
2026-06-22 AFL204 - Jun 22, 01:10 UTCJun 22, 01:25 UTC15m
2026-06-21 AFL221 - Jun 21, 08:54 UTCJun 21, 22:34 UTC13h 40m
2026-06-20 AFL221 - Jun 20, 19:49 UTCJun 21, 09:35 UTC13h 45m
2026-06-20 AFL1731 - Jun 20, 06:49 UTCJun 20, 20:25 UTC13h 35m
2026-06-19 AFL1730 SVO → PKC Jun 19, 15:19 UTCJun 20, 08:14 UTC16h 55m
2026-06-19 AFL1730 SVO → PKC Jun 19, 06:54 UTCJun 19, 16:29 UTC9h 35m
2026-06-18 AFL1730 SVO → PKC Jun 18, 16:55 UTCJun 19, 16:29 UTC23h 34m
2026-06-18 AFL1718 SVO → KHV Jun 18, 15:30 UTCJun 18, 15:50 UTC20m
2026-06-17 AFL204 - Jun 17, 18:50 UTCJun 18, 08:00 UTC13h 10m
2026-06-17 AFL1015 KGD → SVO Jun 17, 10:35 UTCJun 18, 08:00 UTC21h 25m
2026-06-17 AFL1015 KGD → SVO Jun 17, 09:50 UTCJun 18, 08:00 UTC22h 10m
2026-06-16 AFL1025 KGD → SVO Jun 16, 17:15 UTCJun 17, 07:30 UTC14h 16m

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-73138 page for operator, model, and routing details .

Mode-S 151DB2 frequently asked

What is Mode-S code 151DB2?
151DB2 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73138.
Where is Mode-S 151DB2 registered?
Mode-S code 151DB2 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DB2 broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DB2, octal 05216662, decimal 1,383,858.
What flights does 151DB2 operate?
Mode-S 151DB2 has broadcast 20 distinct callsigns, including AFL209, AFL221, AFL204, AFL1731, AFL205.