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 9h ago
Flights observed
102
Distinct callsigns
20
Country
RU
Last broadcast
9h ago

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
AFL325 Aeroflot Russian Airlines 13 2026-05-09
AFL220 Aeroflot Russian Airlines 9 2026-05-29
AFL205 Aeroflot Russian Airlines 9 2026-05-28
AFL221 Aeroflot Russian Airlines 8 2026-05-23
AFL208 Aeroflot Russian Airlines 7 2026-05-28
AFL204 Aeroflot Russian Airlines 4 2026-05-28
AFL1755 Aeroflot Russian Airlines 4 2026-05-27
AFL271 Aeroflot Russian Airlines 3 2026-04-18
AFL270 Aeroflot Russian Airlines 3 2026-04-17
AFL233 Aeroflot Russian Airlines 3 2026-05-11
AFL225 Aeroflot Russian Airlines 3 2026-04-15
AFL576 - 2 2026-04-20
AFL285 Aeroflot Russian Airlines 2 2026-05-15
AFL224 - 2 2026-04-14
AFL1731 Aeroflot Russian Airlines 2 2026-04-14
AFL1715 Aeroflot Russian Airlines 2 2026-04-17
AFL638 Aeroflot Russian Airlines 1 2026-05-26
AFL324 Aeroflot Russian Airlines 1 2026-05-06
AFL288 Aeroflot Russian Airlines 1 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFL220 SVO → CAN May 29, 19:30 UTCMay 29, 20:00 UTC30m
2026-05-29 AFL220 SVO → CAN May 29, 16:30 UTCMay 29, 16:55 UTC25m
2026-05-28 AFL208 SVO → PVG May 28, 18:35 UTCMay 29, 12:05 UTC17h 30m
2026-05-28 AFL208 SVO → PVG May 28, 17:35 UTCMay 28, 17:50 UTC15m
2026-05-28 AFL205 PKX → SVO May 28, 11:15 UTCMay 28, 11:25 UTC10m
2026-05-28 AFL205 PKX → SVO May 28, 04:10 UTCMay 28, 10:25 UTC6h 15m
2026-05-28 AFL204 SVO → PKX May 28, 00:50 UTCMay 28, 01:05 UTC15m
2026-05-27 AFL204 SVO → PKX May 27, 04:19 UTCMay 27, 22:20 UTC18h 0m
2026-05-27 AFL1755 VVO → SVO May 27, 02:19 UTCMay 27, 22:20 UTC20h 0m
2026-05-27 AFL1755 VVO → SVO May 27, 02:14 UTCMay 27, 22:20 UTC20h 5m
2026-05-26 AFL1755 VVO → SVO May 26, 10:34 UTCMay 27, 04:19 UTC17h 45m
2026-05-26 AFL1755 VVO → SVO May 26, 06:20 UTCMay 27, 04:19 UTC22h 0m
2026-05-26 AFL638 VVO → HKT May 26, 02:44 UTCMay 27, 02:14 UTC23h 30m
2026-05-25 AFL205 PKX → SVO May 25, 11:35 UTCMay 25, 12:00 UTC25m
2026-05-24 AFL205 PKX → SVO May 24, 19:40 UTCMay 25, 10:50 UTC15h 10m
2026-05-24 AFL204 SVO → PKX May 24, 18:50 UTCMay 24, 19:10 UTC20m
2026-05-23 AFL221 CAN → SVO May 23, 16:35 UTCMay 24, 12:00 UTC19h 25m
2026-05-19 AFL209 PVG → SVO May 19, 18:40 UTCMay 20, 12:20 UTC17h 41m
2026-05-19 AFL209 PVG → SVO May 19, 11:30 UTCMay 20, 09:55 UTC22h 26m
2026-05-19 AFL209 PVG → SVO May 19, 08:50 UTCMay 19, 21:15 UTC12h 25m
2026-05-18 AFL209 PVG → SVO May 18, 20:30 UTCMay 19, 12:00 UTC15h 30m
2026-05-18 AFL221 CAN → SVO May 18, 08:45 UTCMay 18, 21:10 UTC12h 24m
2026-05-17 AFL220 SVO → CAN May 17, 17:35 UTCMay 18, 09:25 UTC15h 50m
2026-05-17 AFL220 SVO → CAN May 17, 11:30 UTCMay 18, 09:25 UTC21h 55m
2026-05-17 AFL209 PVG → SVO May 17, 08:45 UTCMay 17, 20:20 UTC11h 35m
2026-05-16 AFL209 PVG → SVO May 16, 20:35 UTCMay 17, 20:15 UTC23h 40m
2026-05-16 AFL209 PVG → SVO May 16, 18:20 UTCMay 17, 17:55 UTC23h 35m
2026-05-16 AFL208 SVO → PVG May 16, 07:01 UTCMay 16, 21:10 UTC14h 9m
2026-05-15 AFL208 SVO → PVG May 15, 22:20 UTCMay 16, 21:10 UTC22h 50m
2026-05-15 AFL205 PKX → SVO May 15, 21:35 UTCMay 16, 18:45 UTC21h 11m
2026-05-15 AFL205 PKX → SVO May 15, 11:50 UTCMay 16, 10:11 UTC22h 20m
2026-05-15 AFL285 SVO → MXP May 15, 05:50 UTCMay 15, 22:25 UTC16h 34m
2026-05-14 AFL285 SVO → MXP May 14, 21:35 UTCMay 15, 12:05 UTC14h 30m
2026-05-14 AFL205 PKX → SVO May 14, 07:10 UTCMay 15, 06:15 UTC23h 5m
2026-05-13 AFL204 SVO → PKX May 13, 21:15 UTCMay 14, 07:55 UTC10h 40m
2026-05-11 AFL233 DEL → SVO May 11, 02:45 UTCMay 11, 07:35 UTC4h 50m
2026-05-10 AFL232 SVO → DEL May 10, 23:09 UTCMay 10, 23:50 UTC40m
2026-05-09 AFL325 MLE → SVO May 9, 01:15 UTCMay 9, 17:00 UTC15h 45m
2026-05-08 AFL325 MLE → SVO May 8, 16:45 UTCMay 9, 13:05 UTC20h 20m
2026-05-08 AFL325 MLE → SVO May 8, 13:15 UTCMay 9, 09:50 UTC20h 35m
2026-05-08 AFL325 MLE → SVO May 8, 10:29 UTCMay 9, 09:50 UTC23h 20m
2026-05-08 AFL325 MLE → SVO May 8, 09:49 UTCMay 9, 04:30 UTC18h 40m
2026-05-08 AFL325 MLE → SVO May 8, 06:20 UTCMay 9, 04:30 UTC22h 10m
2026-05-08 AFL325 MLE → SVO May 8, 05:24 UTCMay 9, 03:55 UTC22h 30m
2026-05-08 AFL325 MLE → SVO May 8, 03:09 UTCMay 9, 01:20 UTC22h 10m
2026-05-07 AFL325 MLE → SVO May 7, 17:15 UTCMay 8, 13:20 UTC20h 5m
2026-05-07 AFL325 MLE → SVO May 7, 13:20 UTCMay 8, 10:35 UTC21h 15m
2026-05-07 AFL325 MLE → SVO May 7, 10:30 UTCMay 8, 10:04 UTC23h 34m
2026-05-07 AFL325 MLE → SVO May 7, 09:55 UTCMay 8, 06:30 UTC20h 35m
2026-05-07 AFL325 MLE → SVO May 7, 01:00 UTCMay 7, 18:05 UTC17h 5m

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 9h ago.
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, AFL325, AFL220, AFL205, AFL221.