Apparatus

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sensors Mode-S transponder

151DB1

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73137 · BOEING 777-300ER

Hex
151DB1
Octal
05216661
Decimal
1,383,857
Country
RU
Tail
RA-73137
Type
B77W
No current signal · last broadcast Jul 26, 19:40 UTC
Flights observed
195
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 19:40 UTC

Last known position

Most recent position reported by Mode-S 151DB1.

Country allocation

The ICAO 24-bit address 151DB1 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 21 2026-05-19
AFL221 Aeroflot Russian Airlines 14 2026-05-30
AFL325 Aeroflot Russian Airlines 13 2026-05-09
AFL205 Aeroflot Russian Airlines 12 2026-07-19
AFL208 - 11 2026-06-24
AFL220 - 9 2026-07-19
AFL204 Aeroflot Russian Airlines 8 2026-07-19
AFL1709 - 8 2026-07-11
AFL320 - 4 2026-07-09
AFL273 - 4 2026-06-29
AFL272 - 4 2026-06-28
AFL233 - 4 2026-07-09
AFL1757 Aeroflot Russian Airlines 4 2026-07-18
AFL1755 Aeroflot Russian Airlines 4 2026-05-27
AFL1002 Aeroflot Russian Airlines 4 2026-07-25
AFL7775 Aeroflot Russian Airlines 3 2026-07-22
AFL324 - 3 2026-06-27
AFL321 - 3 2026-07-10
AFL271 Aeroflot Russian Airlines 3 2026-04-18
AFL270 Aeroflot Russian Airlines 3 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFL1738 SVO → PKC Jul 26, 19:15 UTCJul 26, 19:40 UTC25m
2026-07-26 AFL1719 KHV → SVO Jul 26, 08:50 UTCJul 26, 09:25 UTC35m
2026-07-25 AFL1719 KHV → SVO Jul 25, 12:20 UTCJul 26, 08:10 UTC19h 51m
2026-07-25 AFL1719 KHV → SVO Jul 25, 11:30 UTCJul 26, 08:10 UTC20h 41m
2026-07-25 AFL1002 SVO → KGD Jul 25, 08:45 UTCJul 25, 09:25 UTC40m
2026-07-24 AFL1006 SVO → KGD Jul 24, 17:25 UTCJul 24, 18:00 UTC35m
2026-07-23 AFL1715 KHV → SVO Jul 23, 21:40 UTCJul 24, 11:50 UTC14h 10m
2026-07-23 AFL1747 UUS → SVO Jul 23, 11:00 UTCJul 23, 22:00 UTC11h 0m
2026-07-22 AFL1747 UUS → SVO Jul 22, 20:20 UTCJul 23, 11:25 UTC15h 5m
2026-07-22 AFL7775 DXB → SVO Jul 22, 00:20 UTCJul 22, 20:25 UTC20h 5m
2026-07-22 AFL7775 DXB → SVO Jul 22, 00:10 UTCJul 22, 20:25 UTC20h 15m
2026-07-21 AFL7775 DXB → SVO Jul 21, 21:25 UTCJul 22, 00:35 UTC3h 10m
2026-07-19 AFL220 - Jul 19, 17:35 UTCJul 19, 20:40 UTC3h 5m
2026-07-19 AFL205 PKX → SVO Jul 19, 04:10 UTCJul 19, 10:15 UTC6h 5m
2026-07-19 AFL204 SVO → PKX Jul 19, 01:00 UTCJul 19, 01:15 UTC15m
2026-07-18 AFL1757 VVO → SVO Jul 18, 06:35 UTCJul 18, 19:55 UTC13h 20m
2026-07-17 AFL1757 VVO → SVO Jul 17, 14:55 UTCJul 18, 07:50 UTC16h 56m
2026-07-17 AFL1757 VVO → SVO Jul 17, 10:20 UTCJul 18, 07:50 UTC21h 31m
2026-07-17 AFL1757 VVO → SVO Jul 17, 10:05 UTCJul 18, 07:50 UTC21h 46m
2026-07-17 AFL205 PKX → SVO Jul 17, 07:25 UTCJul 17, 15:00 UTC7h 35m
2026-07-17 AFL204 SVO → PKX Jul 17, 01:00 UTCJul 17, 01:15 UTC15m
2026-07-16 AFL204 SVO → PKX Jul 16, 10:50 UTCJul 16, 22:25 UTC11h 35m
2026-07-15 AFL1746 SVO → SVO Jul 15, 19:10 UTCJul 15, 19:30 UTC20m
2026-07-15 AFL205 - Jul 15, 04:05 UTCJul 15, 10:30 UTC6h 25m
2026-07-15 AFL204 - Jul 15, 00:45 UTCJul 15, 00:55 UTC10m
2026-07-14 AFL1727 - Jul 14, 12:50 UTCJul 14, 22:15 UTC9h 25m
2026-07-13 AFL1727 - Jul 13, 17:15 UTCJul 14, 14:05 UTC20h 50m
2026-07-13 AFL1012 - Jul 13, 14:20 UTCJul 13, 15:00 UTC40m
2026-07-12 AFL1012 - Jul 12, 16:10 UTCJul 12, 16:50 UTC40m
2026-07-11 AFL1709 - Jul 11, 16:20 UTCJul 12, 16:15 UTC23h 55m
2026-07-11 AFL1709 - Jul 11, 15:25 UTCJul 11, 16:35 UTC1h 10m
2026-07-10 AFL321 - Jul 10, 00:15 UTCJul 10, 13:55 UTC13h 40m
2026-07-09 AFL320 - Jul 9, 20:05 UTCJul 9, 20:45 UTC40m
2026-07-09 AFL233 - Jul 9, 03:15 UTCJul 9, 07:40 UTC4h 25m
2026-07-08 AFL232 - Jul 8, 23:30 UTCJul 9, 00:10 UTC40m
2026-07-08 AFL232 SVO → SVO Jul 8, 18:55 UTCJul 8, 19:25 UTC30m
2026-07-07 AFL1739 - Jul 7, 20:55 UTCJul 8, 14:00 UTC17h 5m
2026-07-07 AFL1738 - Jul 7, 19:35 UTCJul 7, 19:45 UTC10m
2026-07-07 AFL320 - Jul 7, 00:15 UTCJul 7, 13:40 UTC13h 25m
2026-07-04 AFL1015 - Jul 4, 13:00 UTCJul 4, 14:00 UTC1h 0m
2026-07-03 AFL1013 - Jul 3, 16:55 UTCJul 4, 10:05 UTC17h 10m
2026-07-03 AFL1012 - Jul 3, 14:15 UTCJul 3, 14:50 UTC35m
2026-07-01 AFL1709 VVO → SVO Jul 1, 00:15 UTCJul 1, 16:55 UTC16h 40m
2026-06-30 AFL1709 VVO → SVO Jun 30, 15:35 UTCJul 1, 00:20 UTC8h 45m
2026-06-29 AFL273 - Jun 29, 06:40 UTCJun 29, 14:19 UTC7h 40m
2026-06-28 AFL272 - Jun 28, 11:59 UTCJun 29, 04:34 UTC16h 35m
2026-06-27 AFL1712 - Jun 27, 21:34 UTCJun 28, 12:25 UTC14h 50m
2026-06-27 AFL1712 - Jun 27, 16:35 UTCJun 28, 12:25 UTC19h 50m
2026-06-27 AFL324 - Jun 27, 02:39 UTCJun 27, 21:55 UTC19h 15m
2026-06-27 AFL324 - Jun 27, 01:39 UTCJun 27, 21:55 UTC20h 15m

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-73137 page for operator, model, and routing details .

Mode-S 151DB1 frequently asked

What is Mode-S code 151DB1?
151DB1 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73137.
Where is Mode-S 151DB1 registered?
Mode-S code 151DB1 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DB1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DB1, octal 05216661, decimal 1,383,857.
What flights does 151DB1 operate?
Mode-S 151DB1 has broadcast 20 distinct callsigns, including AFL209, AFL221, AFL325, AFL205, AFL208.