Apparatus

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sensors Mode-S transponder

151FF1

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73713 · AIRBUS A-321

Hex
151FF1
Octal
05217761
Decimal
1,384,433
Country
RU
Tail
RA-73713
Type
A321
No current signal · last broadcast 2h ago
Flights observed
85
Distinct callsigns
20
Country
RU
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 151FF1.

Country allocation

The ICAO 24-bit address 151FF1 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
AFL1947 Aeroflot Russian Airlines 10 2026-05-25
AFL1957 Aeroflot Russian Airlines 7 2026-05-18
AFL1887 Aeroflot Russian Airlines 5 2026-06-01
AFL1883 Aeroflot Russian Airlines 5 2026-06-02
AFL1946 Aeroflot Russian Airlines 4 2026-05-12
AFL1886 Aeroflot Russian Airlines 4 2026-06-02
AFL1962 Aeroflot Russian Airlines 3 2026-05-20
AFL1646 Aeroflot Russian Airlines 3 2026-05-05
AFL1421 Aeroflot Russian Airlines 3 2026-04-26
AFL1420 Aeroflot Russian Airlines 3 2026-05-14
AFL2144 Aeroflot Russian Airlines 2 2026-05-23
AFL2142 Aeroflot Russian Airlines 2 2026-04-19
AFL1882 Aeroflot Russian Airlines 2 2026-06-01
AFL1861 Aeroflot Russian Airlines 2 2026-05-30
AFL1486 Aeroflot Russian Airlines 2 2026-04-20
AFL1260 Aeroflot Russian Airlines 2 2026-04-30
AFL1247 Aeroflot Russian Airlines 2 2026-04-15
AFL1124 Aeroflot Russian Airlines 2 2026-05-15
AFL615 Aeroflot Russian Airlines 1 2026-05-30
AFL614 Aeroflot Russian Airlines 1 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 AFL1886 SVO → FRU Jun 2, 06:35 UTCJun 3, 03:20 UTC20h 45m
2026-06-02 AFL1883 FRU → SVO Jun 2, 03:55 UTCJun 2, 04:15 UTC20m
2026-06-01 AFL1882 SVO → FRU Jun 1, 18:45 UTCJun 1, 20:10 UTC1h 25m
2026-06-01 AFL1887 FRU → SVO Jun 1, 15:45 UTCJun 1, 16:15 UTC30m
2026-06-01 AFL1886 SVO → FRU Jun 1, 06:50 UTCJun 1, 07:05 UTC15m
2026-05-31 AFL1832 SVO → MSQ May 31, 16:00 UTCMay 31, 16:15 UTC15m
2026-05-30 AFL1861 EVN → SVO May 30, 21:05 UTCMay 30, 21:35 UTC30m
2026-05-30 AFL1861 EVN → SVO May 30, 18:45 UTCMay 30, 19:05 UTC20m
2026-05-30 AFL614 KRR → EVN May 30, 16:45 UTCMay 30, 16:55 UTC10m
2026-05-30 AFL615 EVN → KRR May 30, 12:45 UTCMay 30, 13:35 UTC50m
2026-05-30 AFL1860 SVO → EVN May 30, 08:15 UTCMay 30, 08:25 UTC10m
2026-05-29 AFL1128 SVO → AER May 29, 16:10 UTCMay 29, 16:40 UTC30m
2026-05-29 AFL1003 KGD → SVO May 29, 11:00 UTCMay 29, 13:05 UTC2h 5m
2026-05-29 AFL1002 SVO → KGD May 29, 07:20 UTCMay 29, 09:15 UTC1h 55m
2026-05-28 AFL1886 SVO → FRU May 28, 06:50 UTCMay 28, 15:35 UTC8h 45m
2026-05-27 AFL1887 FRU → SVO May 27, 15:55 UTCMay 27, 16:35 UTC40m
2026-05-27 AFL1886 SVO → FRU May 27, 07:50 UTCMay 27, 15:15 UTC7h 25m
2026-05-25 AFL1947 ALA → SVO May 25, 06:55 UTCMay 25, 16:40 UTC9h 45m
2026-05-24 AFL1869 EVN → SVO May 24, 20:45 UTCMay 24, 21:10 UTC25m
2026-05-23 AFL2145 AYT → SVO May 23, 17:35 UTCMay 23, 22:25 UTC4h 51m
2026-05-23 AFL2144 SVO → AYT May 23, 15:15 UTCMay 23, 15:30 UTC15m
2026-05-22 AFL2144 SVO → AYT May 22, 18:40 UTCMay 23, 11:45 UTC17h 4m
2026-05-22 AFL1417 SVX → SVO May 22, 10:35 UTCMay 22, 11:35 UTC1h 0m
2026-05-22 AFL1416 SVO → SVX May 22, 07:45 UTCMay 22, 08:55 UTC1h 10m
2026-05-21 AFL1513 SGC → SVO May 21, 04:45 UTCMay 21, 17:10 UTC12h 25m
2026-05-20 AFL1512 SVO → SGC May 20, 23:00 UTCMay 20, 23:25 UTC25m
2026-05-20 AFL1962 SVO → NQZ May 20, 11:40 UTCMay 20, 16:40 UTC5h 0m
2026-05-18 AFL1887 FRU → SVO May 18, 16:15 UTCMay 18, 16:25 UTC10m
2026-05-18 AFL1957 NQZ → SVO May 18, 02:00 UTCMay 18, 15:00 UTC13h 0m
2026-05-17 AFL1957 NQZ → SVO May 17, 16:35 UTCMay 18, 15:00 UTC22h 25m
2026-05-17 AFL1957 NQZ → SVO May 17, 08:50 UTCMay 18, 03:35 UTC18h 45m
2026-05-16 AFL1319 MMK → SVO May 16, 07:45 UTCMay 16, 08:05 UTC20m
2026-05-16 AFL1318 SVO → MMK May 16, 03:15 UTCMay 16, 03:35 UTC20m
2026-05-15 AFL1124 SVO → AER May 15, 15:20 UTCMay 15, 15:35 UTC15m
2026-05-14 AFL1420 SVO → CEK May 14, 19:40 UTCMay 14, 20:50 UTC1h 10m
2026-05-13 AFL1883 FRU → SVO May 13, 15:35 UTCMay 14, 03:40 UTC12h 5m
2026-05-13 AFL1957 NQZ → SVO May 13, 03:00 UTCMay 13, 20:30 UTC17h 30m
2026-05-13 AFL1957 NQZ → SVO May 13, 02:05 UTCMay 13, 20:30 UTC18h 25m
2026-05-12 AFL1957 NQZ → SVO May 12, 23:01 UTCMay 13, 20:30 UTC21h 30m
2026-05-12 AFL1957 NQZ → SVO May 12, 22:01 UTCMay 13, 15:50 UTC17h 50m
2026-05-12 AFL1947 ALA → SVO May 12, 16:40 UTCMay 12, 17:10 UTC30m
2026-05-12 AFL1946 SVO → ALA May 12, 06:45 UTCMay 12, 07:05 UTC20m
2026-05-12 AFL1883 FRU → SVO May 12, 04:15 UTCMay 12, 04:35 UTC20m
2026-05-11 AFL1882 SVO → FRU May 11, 19:55 UTCMay 11, 20:10 UTC15m
2026-05-11 AFL1947 ALA → SVO May 11, 07:50 UTCMay 11, 17:05 UTC9h 15m
2026-05-10 AFL1947 ALA → SVO May 10, 16:59 UTCMay 10, 17:25 UTC25m
2026-05-10 AFL1947 ALA → SVO May 10, 15:55 UTCMay 10, 16:20 UTC25m
2026-05-10 AFL1883 FRU → SVO May 10, 04:04 UTCMay 10, 04:29 UTC25m
2026-05-09 AFL1883 FRU → SVO May 9, 19:49 UTCMay 10, 03:30 UTC7h 40m
2026-05-09 AFL1947 ALA → SVO May 9, 16:25 UTCMay 9, 16:55 UTC30m

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-73713 page for operator, model, and routing details .

Mode-S 151FF1 frequently asked

What is Mode-S code 151FF1?
151FF1 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73713.
Where is Mode-S 151FF1 registered?
Mode-S code 151FF1 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FF1 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FF1, octal 05217761, decimal 1,384,433.
What flights does 151FF1 operate?
Mode-S 151FF1 has broadcast 20 distinct callsigns, including AFL1947, AFL1957, AFL1887, AFL1883, AFL1946.