Apparatus

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sensors Mode-S transponder

151FEB

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73707 · AIRBUS A-321

Hex
151FEB
Octal
05217753
Decimal
1,384,427
Country
RU
Tail
RA-73707
Type
A321
No current signal · last broadcast 22h ago
Flights observed
75
Distinct callsigns
20
Country
RU
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S 151FEB.

Country allocation

The ICAO 24-bit address 151FEB 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
AFL1943 Aeroflot Russian Airlines 9 2026-05-29
AFL2130 Aeroflot Russian Airlines 7 2026-05-29
AFL1942 Aeroflot Russian Airlines 7 2026-05-30
AFL2136 Aeroflot Russian Airlines 6 2026-05-22
AFL2131 Aeroflot Russian Airlines 5 2026-05-29
AFL1941 Aeroflot Russian Airlines 4 2026-05-16
AFL2135 Aeroflot Russian Airlines 3 2026-06-01
AFL2134 Aeroflot Russian Airlines 3 2026-06-01
AFL1962 Aeroflot Russian Airlines 3 2026-05-28
AFL1524 Aeroflot Russian Airlines 3 2026-05-12
AFL2137 Aeroflot Russian Airlines 2 2026-05-12
AFL2125 Aeroflot Russian Airlines 2 2026-05-10
AFL1974 Aeroflot Russian Airlines 2 2026-04-22
AFL1957 Aeroflot Russian Airlines 2 2026-05-28
AFL1940 Aeroflot Russian Airlines 2 2026-05-01
AFL1861 Aeroflot Russian Airlines 2 2026-05-24
AFL615 Aeroflot Russian Airlines 1 2026-05-24
AFL2124 Aeroflot Russian Airlines 1 2026-05-10
AFL1963 Aeroflot Russian Airlines 1 2026-05-28
AFL1833 Aeroflot Russian Airlines 1 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 AFL2135 IST → SVO Jun 1, 20:55 UTCJun 1, 21:25 UTC30m
2026-06-01 AFL2134 SVO → IST Jun 1, 18:20 UTCJun 1, 18:45 UTC25m
2026-05-31 AFL1491 KJA → SVO May 31, 09:30 UTCMay 31, 18:30 UTC9h 0m
2026-05-30 AFL1942 SVO → ALA May 30, 21:25 UTCMay 30, 22:45 UTC1h 20m
2026-05-30 AFL1412 SVO → SVX May 30, 10:10 UTCMay 30, 11:35 UTC1h 25m
2026-05-29 AFL1943 ALA → SVO May 29, 22:40 UTCMay 30, 07:15 UTC8h 35m
2026-05-29 AFL1942 SVO → ALA May 29, 21:25 UTCMay 29, 21:45 UTC20m
2026-05-29 AFL2131 IST → SVO May 29, 14:40 UTCMay 29, 16:25 UTC1h 45m
2026-05-29 AFL2130 SVO → IST May 29, 12:35 UTCMay 29, 13:00 UTC25m
2026-05-28 AFL1957 NQZ → SVO May 28, 22:05 UTCMay 29, 03:35 UTC5h 30m
2026-05-28 AFL1963 NQZ → SVO May 28, 18:20 UTCMay 28, 18:35 UTC15m
2026-05-28 AFL1962 SVO → NQZ May 28, 10:35 UTCMay 28, 17:35 UTC7h 0m
2026-05-26 AFL1957 NQZ → SVO May 26, 10:39 UTCMay 27, 04:24 UTC17h 45m
2026-05-26 AFL1943 ALA → SVO May 26, 07:10 UTCMay 26, 07:19 UTC10m
2026-05-25 AFL1942 SVO → ALA May 25, 21:19 UTCMay 25, 22:40 UTC1h 20m
2026-05-24 AFL1861 EVN → SVO May 24, 20:15 UTCMay 24, 20:35 UTC20m
2026-05-24 AFL1861 EVN → SVO May 24, 17:35 UTCMay 24, 18:05 UTC30m
2026-05-24 AFL615 EVN → KRR May 24, 10:10 UTCMay 24, 11:00 UTC50m
2026-05-23 AFL1833 MSQ → SVO May 23, 18:10 UTCMay 23, 18:30 UTC20m
2026-05-23 AFL1203 PEE → SVO May 23, 11:30 UTCMay 23, 12:00 UTC30m
2026-05-22 AFL1480 SVO → KJA May 22, 21:10 UTCMay 23, 02:50 UTC5h 39m
2026-05-22 AFL2136 SVO → IST May 22, 10:25 UTCMay 22, 10:35 UTC10m
2026-05-22 AFL2136 SVO → IST May 22, 09:00 UTCMay 22, 09:35 UTC35m
2026-05-21 AFL2130 SVO → IST May 21, 12:50 UTCMay 21, 13:05 UTC15m
2026-05-19 AFL1962 SVO → NQZ May 19, 11:35 UTCMay 20, 06:10 UTC18h 36m
2026-05-18 AFL1962 SVO → NQZ May 18, 22:35 UTCMay 19, 16:20 UTC17h 45m
2026-05-16 AFL1943 ALA → SVO May 16, 22:25 UTCMay 17, 15:45 UTC17h 20m
2026-05-16 AFL2131 IST → SVO May 16, 14:51 UTCMay 16, 15:05 UTC15m
2026-05-16 AFL1941 ALA → SVO May 16, 05:05 UTCMay 16, 05:15 UTC10m
2026-05-12 AFL1524 SVO → RGK May 12, 22:25 UTCMay 12, 22:50 UTC25m
2026-05-12 AFL2137 IST → SVO May 12, 13:10 UTCMay 12, 13:20 UTC10m
2026-05-11 AFL2135 IST → SVO May 11, 21:00 UTCMay 11, 21:10 UTC10m
2026-05-10 AFL2134 SVO → IST May 10, 21:10 UTCMay 11, 15:00 UTC17h 50m
2026-05-10 AFL2134 SVO → IST May 10, 20:30 UTCMay 11, 15:00 UTC18h 30m
2026-05-10 AFL2125 AYT → SVO May 10, 14:49 UTCMay 11, 14:45 UTC23h 55m
2026-05-10 AFL2125 AYT → SVO May 10, 13:40 UTCMay 11, 05:45 UTC16h 5m
2026-05-10 AFL2124 SVO → AYT May 10, 11:30 UTCMay 10, 11:35 UTC5m
2026-05-09 AFL2131 IST → SVO May 9, 16:25 UTCMay 10, 10:40 UTC18h 15m
2026-05-09 AFL2131 IST → SVO May 9, 10:55 UTCMay 10, 10:40 UTC23h 45m
2026-05-09 AFL2130 SVO → IST May 9, 08:50 UTCMay 10, 07:40 UTC22h 50m
2026-05-09 AFL2130 SVO → IST May 9, 08:00 UTCMay 9, 18:25 UTC10h 25m
2026-05-08 AFL2131 IST → SVO May 8, 18:25 UTCMay 8, 19:35 UTC1h 10m
2026-05-08 AFL2130 SVO → IST May 8, 11:44 UTCMay 8, 14:45 UTC3h 0m
2026-05-06 AFL1942 SVO → ALA May 6, 22:50 UTCMay 6, 23:05 UTC15m
2026-05-05 AFL1313 MRV → SVO May 5, 14:45 UTCMay 5, 15:20 UTC35m
2026-05-04 AFL2136 SVO → IST May 4, 09:05 UTCMay 4, 09:50 UTC45m
2026-05-03 AFL1525 RGK → SVO May 3, 06:05 UTCMay 3, 06:35 UTC30m
2026-05-01 AFL1940 SVO → ALA May 1, 20:15 UTCMay 1, 20:55 UTC40m
2026-05-01 AFL1943 ALA → SVO May 1, 06:10 UTCMay 1, 06:20 UTC10m
2026-04-30 AFL1941 ALA → SVO Apr 30, 06:00 UTCApr 30, 06:15 UTC15m

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-73707 page for operator, model, and routing details .

Mode-S 151FEB frequently asked

What is Mode-S code 151FEB?
151FEB is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73707.
Where is Mode-S 151FEB registered?
Mode-S code 151FEB is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FEB broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FEB, octal 05217753, decimal 1,384,427.
What flights does 151FEB operate?
Mode-S 151FEB has broadcast 20 distinct callsigns, including AFL1943, AFL2130, AFL1942, AFL2136, AFL2131.