Apparatus

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sensors Mode-S transponder

151FED

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73709 · AIRBUS A-321

Hex
151FED
Octal
05217755
Decimal
1,384,429
Country
RU
Tail
RA-73709
Type
A321
No current signal · last broadcast 16h ago
Flights observed
94
Distinct callsigns
20
Country
RU
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 151FED.

Country allocation

The ICAO 24-bit address 151FED 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
AFL2145 Aeroflot Russian Airlines 5 2026-05-25
AFL2144 Aeroflot Russian Airlines 4 2026-05-25
AFL1886 Aeroflot Russian Airlines 4 2026-05-06
AFL1011 Aeroflot Russian Airlines 4 2026-05-23
AFL1010 Aeroflot Russian Airlines 4 2026-05-23
AFL1007 Aeroflot Russian Airlines 4 2026-05-27
AFL2143 Aeroflot Russian Airlines 3 2026-05-24
AFL2142 Aeroflot Russian Airlines 3 2026-04-28
AFL1325 Aeroflot Russian Airlines 3 2026-05-19
AFL615 Aeroflot Russian Airlines 2 2026-05-28
AFL2700 Aeroflot Russian Airlines 2 2026-05-10
AFL2160 Aeroflot Russian Airlines 2 2026-05-09
AFL1882 Aeroflot Russian Airlines 2 2026-05-02
AFL1861 Aeroflot Russian Airlines 2 2026-05-28
AFL1860 Aeroflot Russian Airlines 2 2026-05-28
AFL1324 - 2 2026-04-18
AFL1045 Aeroflot Russian Airlines 2 2026-05-11
AFL1024 Aeroflot Russian Airlines 2 2026-05-20
AFL1019 Aeroflot Russian Airlines 2 2026-05-01
AFL1018 Aeroflot Russian Airlines 2 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFL2171 IST → SVO May 29, 05:25 UTCMay 29, 12:05 UTC6h 40m
2026-05-29 AFL2170 SVO → IST May 29, 03:40 UTCMay 29, 03:50 UTC10m
2026-05-28 AFL1861 EVN → SVO May 28, 17:10 UTCMay 28, 23:05 UTC5h 55m
2026-05-28 AFL615 EVN → KRR May 28, 11:00 UTCMay 28, 11:50 UTC50m
2026-05-28 AFL1860 SVO → EVN May 28, 08:55 UTCMay 28, 09:15 UTC20m
2026-05-27 AFL1007 KGD → SVO May 27, 19:45 UTCMay 27, 21:45 UTC2h 0m
2026-05-27 AFL1006 SVO → KGD May 27, 07:15 UTCMay 27, 18:15 UTC11h 0m
2026-05-25 AFL2145 AYT → SVO May 25, 21:45 UTCMay 25, 21:54 UTC10m
2026-05-25 AFL2145 AYT → SVO May 25, 17:35 UTCMay 25, 19:35 UTC2h 0m
2026-05-25 AFL2144 SVO → AYT May 25, 15:30 UTCMay 25, 15:40 UTC10m
2026-05-25 AFL2144 SVO → AYT May 25, 14:10 UTCMay 25, 14:45 UTC35m
2026-05-25 AFL2144 SVO → AYT May 25, 11:10 UTCMay 25, 11:40 UTC30m
2026-05-25 AFL1941 ALA → SVO May 25, 06:15 UTCMay 25, 06:35 UTC20m
2026-05-24 AFL2143 AYT → SVO May 24, 11:25 UTCMay 24, 13:25 UTC2h 0m
2026-05-23 AFL1011 KGD → SVO May 23, 18:20 UTCMay 23, 20:15 UTC1h 55m
2026-05-23 AFL1010 SVO → KGD May 23, 14:35 UTCMay 23, 16:40 UTC2h 5m
2026-05-23 AFL1003 KGD → SVO May 23, 11:20 UTCMay 23, 12:50 UTC1h 30m
2026-05-22 AFL2145 AYT → SVO May 22, 17:35 UTCMay 23, 09:20 UTC15h 44m
2026-05-21 AFL1319 MMK → SVO May 21, 07:25 UTCMay 21, 07:55 UTC30m
2026-05-20 AFL1025 KGD → SVO May 20, 15:15 UTCMay 20, 17:15 UTC2h 0m
2026-05-20 AFL1024 SVO → KGD May 20, 08:10 UTCMay 20, 13:45 UTC5h 35m
2026-05-19 AFL1024 SVO → KGD May 19, 17:30 UTCMay 20, 13:45 UTC20h 16m
2026-05-19 AFL1325 MMK → SVO May 19, 16:40 UTCMay 20, 13:45 UTC21h 6m
2026-05-19 AFL1325 MMK → SVO May 19, 12:40 UTCMay 20, 08:45 UTC20h 6m
2026-05-19 AFL1325 MMK → SVO May 19, 09:30 UTCMay 20, 08:45 UTC23h 16m
2026-05-18 AFL2145 AYT → SVO May 18, 21:30 UTCMay 18, 21:55 UTC25m
2026-05-18 AFL2145 AYT → SVO May 18, 17:25 UTCMay 18, 19:50 UTC2h 24m
2026-05-18 AFL2144 SVO → AYT May 18, 15:05 UTCMay 18, 15:20 UTC15m
2026-05-17 AFL1011 KGD → SVO May 17, 18:20 UTCMay 17, 19:55 UTC1h 35m
2026-05-17 AFL1010 SVO → KGD May 17, 15:55 UTCMay 17, 16:45 UTC50m
2026-05-16 AFL1689 OMS → SVO May 16, 02:25 UTCMay 16, 14:35 UTC12h 11m
2026-05-15 AFL1646 SVO → NJC May 15, 20:05 UTCMay 15, 20:30 UTC25m
2026-05-15 AFL1310 SVO → MRV May 15, 11:00 UTCMay 15, 11:20 UTC20m
2026-05-14 AFL1007 KGD → SVO May 14, 19:45 UTCMay 15, 08:00 UTC12h 15m
2026-05-13 AFL1011 KGD → SVO May 13, 18:15 UTCMay 13, 19:35 UTC1h 20m
2026-05-12 AFL1010 SVO → KGD May 12, 21:20 UTCMay 13, 16:40 UTC19h 20m
2026-05-12 AFL1007 KGD → SVO May 12, 19:55 UTCMay 13, 16:40 UTC20h 45m
2026-05-12 AFL1006 SVO → KGD May 12, 17:30 UTCMay 12, 17:50 UTC20m
2026-05-11 AFL1007 KGD → SVO May 11, 19:40 UTCMay 11, 21:30 UTC1h 50m
2026-05-11 AFL1045 AER → SVO May 11, 13:45 UTCMay 11, 14:30 UTC45m
2026-05-11 AFL1883 FRU → SVO May 11, 04:10 UTCMay 11, 04:40 UTC30m
2026-05-10 AFL2701 BJV → SVO May 10, 12:30 UTCMay 10, 20:05 UTC7h 35m
2026-05-10 AFL2700 SVO → AYT May 10, 10:35 UTCMay 10, 11:00 UTC25m
2026-05-10 AFL2700 SVO → AYT May 10, 05:50 UTCMay 10, 09:45 UTC3h 55m
2026-05-09 AFL2161 AYT → SVO May 9, 16:20 UTCMay 9, 20:20 UTC4h 0m
2026-05-09 AFL2160 SVO → AYT May 9, 14:35 UTCMay 9, 14:55 UTC20m
2026-05-09 AFL2160 SVO → AYT May 9, 10:45 UTCMay 9, 13:45 UTC3h 0m
2026-05-06 AFL1118 SVO → AER May 6, 18:20 UTCMay 6, 18:50 UTC30m
2026-05-06 AFL1886 SVO → FRU May 6, 07:01 UTCMay 6, 15:25 UTC8h 24m
2026-05-05 AFL1861 EVN → SVO May 5, 16:15 UTCMay 5, 16:40 UTC25m

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-73709 page for operator, model, and routing details .

Mode-S 151FED frequently asked

What is Mode-S code 151FED?
151FED is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73709.
Where is Mode-S 151FED registered?
Mode-S code 151FED is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FED broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FED, octal 05217755, decimal 1,384,429.
What flights does 151FED operate?
Mode-S 151FED has broadcast 20 distinct callsigns, including AFL2145, AFL2144, AFL1886, AFL1011, AFL1010.