Apparatus

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sensors Mode-S transponder

151DA3

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73123 · BOEING 737-800

Hex
151DA3
Octal
05216643
Decimal
1,383,843
Country
RU
Tail
RA-73123
Type
B738
No current signal · last broadcast 3h ago
Flights observed
81
Distinct callsigns
20
Country
RU
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 151DA3.

Country allocation

The ICAO 24-bit address 151DA3 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
AFL2120 Aeroflot Russian Airlines 4 2026-05-28
AFL1563 Aeroflot Russian Airlines 4 2026-05-01
AFL431 - 3 2026-04-17
AFL401 Aeroflot Russian Airlines 3 2026-04-28
AFL2121 Aeroflot Russian Airlines 3 2026-05-28
AFL1863 Aeroflot Russian Airlines 3 2026-05-25
AFL1562 Aeroflot Russian Airlines 3 2026-05-01
AFL1487 Aeroflot Russian Airlines 3 2026-05-30
AFL1442 Aeroflot Russian Airlines 3 2026-05-05
AFL1405 Aeroflot Russian Airlines 3 2026-05-01
AFL430 Aeroflot Russian Airlines 2 2026-04-17
AFL400 Aeroflot Russian Airlines 2 2026-04-20
AFL2139 Aeroflot Russian Airlines 2 2026-05-25
AFL2122 Aeroflot Russian Airlines 2 2026-05-02
AFL1974 Aeroflot Russian Airlines 2 2026-05-26
AFL1862 Aeroflot Russian Airlines 2 2026-05-09
AFL1517 Aeroflot Russian Airlines 2 2026-04-16
AFL1455 Aeroflot Russian Airlines 2 2026-05-09
AFL1454 Aeroflot Russian Airlines 2 2026-05-08
AFL1445 Aeroflot Russian Airlines 2 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AFL1487 KJA → SVO May 30, 13:10 UTCMay 30, 13:40 UTC30m
2026-05-30 AFL1486 SVO → KJA May 30, 07:10 UTCMay 30, 07:30 UTC20m
2026-05-28 AFL1549 OVB → SVO May 28, 23:40 UTCMay 29, 01:55 UTC2h 15m
2026-05-28 AFL1548 SVO → OVB May 28, 18:05 UTCMay 28, 18:45 UTC40m
2026-05-28 AFL2121 BJV → SVO May 28, 11:15 UTCMay 28, 13:30 UTC2h 15m
2026-05-28 AFL2120 SVO → BJV May 28, 09:00 UTCMay 28, 09:45 UTC45m
2026-05-27 AFL2120 SVO → BJV May 27, 12:50 UTCMay 28, 09:45 UTC20h 55m
2026-05-27 AFL2120 SVO → BJV May 27, 12:40 UTCMay 28, 09:45 UTC21h 5m
2026-05-26 AFL1780 SVO → STW May 26, 18:34 UTCMay 27, 12:55 UTC18h 21m
2026-05-26 AFL1975 TAS → SVO May 26, 11:09 UTCMay 26, 18:45 UTC7h 35m
2026-05-26 AFL1974 SVO → TAS May 26, 10:05 UTCMay 26, 10:25 UTC20m
2026-05-25 AFL1863 EVN → SVO May 25, 17:20 UTCMay 25, 17:50 UTC30m
2026-05-25 AFL2139 IST → SVO May 25, 10:15 UTCMay 25, 10:35 UTC20m
2026-05-24 AFL2138 SVO → IST May 24, 20:45 UTCMay 24, 21:40 UTC55m
2026-05-23 AFL2121 BJV → SVO May 23, 12:50 UTCMay 24, 08:00 UTC19h 11m
2026-05-23 AFL2121 BJV → SVO May 23, 11:15 UTCMay 24, 08:00 UTC20h 46m
2026-05-23 AFL2120 SVO → BJV May 23, 09:10 UTCMay 23, 09:40 UTC30m
2026-05-22 AFL1128 SVO → AER May 22, 16:05 UTCMay 22, 17:00 UTC55m
2026-05-21 AFL1845 MSQ → SVO May 21, 22:05 UTCMay 21, 22:20 UTC15m
2026-05-20 AFL2147 AYT → SVO May 20, 15:20 UTCMay 20, 17:45 UTC2h 25m
2026-05-20 AFL2146 SVO → AYT May 20, 13:25 UTCMay 20, 13:35 UTC10m
2026-05-17 AFL1967 EVN → SVO May 17, 06:05 UTCMay 17, 16:30 UTC10h 25m
2026-05-16 AFL1974 SVO → TAS May 16, 10:55 UTCMay 16, 18:15 UTC7h 20m
2026-05-15 AFL1639 OMS → SVO May 15, 04:00 UTCMay 15, 04:30 UTC30m
2026-05-14 AFL1367 STW → SVO May 14, 09:50 UTCMay 14, 10:05 UTC15m
2026-05-14 AFL1366 SVO → STW May 14, 05:10 UTCMay 14, 05:35 UTC25m
2026-05-12 AFL1869 EVN → SVO May 12, 03:00 UTCMay 12, 21:40 UTC18h 40m
2026-05-09 AFL1863 EVN → SVO May 9, 17:35 UTCMay 10, 11:30 UTC17h 55m
2026-05-09 AFL1862 SVO → EVN May 9, 12:40 UTCMay 9, 13:55 UTC1h 15m
2026-05-09 AFL1455 UUD → SVO May 9, 01:25 UTCMay 9, 06:25 UTC5h 0m
2026-05-08 AFL1454 SVO → UUD May 8, 23:10 UTCMay 8, 23:30 UTC20m
2026-05-08 AFL1192 SVO → KZN May 8, 11:49 UTCMay 8, 12:04 UTC15m
2026-05-07 AFL1365 STW → SVO May 7, 17:40 UTCMay 8, 05:14 UTC11h 35m
2026-05-06 AFL1040 SVO → AER May 6, 12:25 UTCMay 6, 12:55 UTC30m
2026-05-06 AFL1443 IKT → SVO May 6, 03:25 UTCMay 6, 06:55 UTC3h 30m
2026-05-05 AFL1442 SVO → IKT May 5, 22:01 UTCMay 5, 22:40 UTC40m
2026-05-05 AFL1442 SVO → IKT May 5, 18:50 UTCMay 5, 19:15 UTC25m
2026-05-02 AFL1487 KJA → SVO May 2, 23:25 UTCMay 3, 16:15 UTC16h 49m
2026-05-02 AFL1487 KJA → SVO May 2, 14:55 UTCMay 3, 13:30 UTC22h 34m
2026-05-02 AFL2122 SVO → DLM May 2, 04:40 UTCMay 2, 13:15 UTC8h 35m
2026-05-01 AFL2122 SVO → DLM May 1, 17:40 UTCMay 2, 13:15 UTC19h 35m
2026-05-01 AFL1405 SVX → SVO May 1, 10:00 UTCMay 2, 05:05 UTC19h 5m
2026-05-01 AFL1563 IKT → SVO May 1, 06:55 UTCMay 2, 05:05 UTC22h 10m
2026-05-01 AFL1563 IKT → SVO May 1, 05:25 UTCMay 1, 05:40 UTC15m
2026-05-01 AFL1562 SVO → IKT May 1, 03:25 UTCMay 1, 03:35 UTC10m
2026-04-30 AFL1562 SVO → IKT Apr 30, 17:10 UTCMay 1, 02:15 UTC9h 5m
2026-04-30 AFL1443 IKT → SVO Apr 30, 03:35 UTCApr 30, 15:20 UTC11h 45m
2026-04-29 AFL1442 SVO → IKT Apr 29, 18:55 UTCApr 29, 19:20 UTC25m
2026-04-29 AFL1563 IKT → SVO Apr 29, 07:10 UTCApr 29, 11:35 UTC4h 26m
2026-04-29 AFL1563 IKT → SVO Apr 29, 05:45 UTCApr 29, 05:50 UTC5m

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-73123 page for operator, model, and routing details .

Mode-S 151DA3 frequently asked

What is Mode-S code 151DA3?
151DA3 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73123.
Where is Mode-S 151DA3 registered?
Mode-S code 151DA3 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DA3 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 151DA3, octal 05216643, decimal 1,383,843.
What flights does 151DA3 operate?
Mode-S 151DA3 has broadcast 20 distinct callsigns, including AFL2120, AFL1563, AFL431, AFL401, AFL2121.