Apparatus

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sensors Mode-S transponder

151FF5

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73717 · AIRBUS A-321

Hex
151FF5
Octal
05217765
Decimal
1,384,437
Country
RU
Tail
RA-73717
Type
A321
No current signal · last broadcast Jul 26, 20:05 UTC
Flights observed
225
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 20:05 UTC

Last known position

Most recent position reported by Mode-S 151FF5.

Country allocation

The ICAO 24-bit address 151FF5 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
AFL615 Aeroflot Russian Airlines 21 2026-07-25
AFL1861 - 19 2026-07-25
AFL1860 Aeroflot Russian Airlines 17 2026-07-24
AFL2142 Aeroflot Russian Airlines 10 2026-06-05
AFL2143 Aeroflot Russian Airlines 8 2026-06-05
AFL1947 Aeroflot Russian Airlines 6 2026-06-03
AFL1887 Aeroflot Russian Airlines 6 2026-06-11
AFL614 Aeroflot Russian Airlines 5 2026-07-25
AFL1016 - 5 2026-06-29
AFL2147 Aeroflot Russian Airlines 4 2026-07-08
AFL2145 Aeroflot Russian Airlines 4 2026-05-16
AFL2134 - 4 2026-06-27
AFL1882 - 4 2026-07-11
AFL1456 - 4 2026-06-18
AFL2146 - 3 2026-07-08
AFL2144 Aeroflot Russian Airlines 3 2026-05-16
AFL2135 - 3 2026-06-27
AFL2124 Aeroflot Russian Airlines 3 2026-04-25
AFL1886 - 3 2026-07-20
AFL1867 Aeroflot Russian Airlines 3 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFL1868 SVO → EVN Jul 26, 19:55 UTCJul 26, 20:05 UTC10m
2026-07-25 AFL1458 SVO → NOZ Jul 25, 23:45 UTCJul 26, 00:00 UTC15m
2026-07-25 AFL1861 - Jul 25, 17:55 UTCJul 25, 18:25 UTC30m
2026-07-25 AFL614 KRR → EVN Jul 25, 16:00 UTCJul 25, 16:10 UTC10m
2026-07-25 AFL615 EVN → KRR Jul 25, 11:15 UTCJul 25, 12:00 UTC45m
2026-07-24 AFL1861 - Jul 24, 20:05 UTCJul 25, 08:45 UTC12h 40m
2026-07-24 AFL615 EVN → KRR Jul 24, 11:45 UTCJul 24, 12:40 UTC55m
2026-07-24 AFL1860 SVO → EVN Jul 24, 09:00 UTCJul 24, 09:10 UTC10m
2026-07-23 AFL1861 - Jul 23, 16:30 UTCJul 23, 16:55 UTC25m
2026-07-23 AFL615 EVN → KRR Jul 23, 10:30 UTCJul 23, 11:15 UTC45m
2026-07-22 AFL1861 - Jul 22, 16:15 UTCJul 22, 16:40 UTC25m
2026-07-22 AFL614 KRR → EVN Jul 22, 14:30 UTCJul 22, 14:40 UTC10m
2026-07-22 AFL1860 SVO → EVN Jul 22, 05:20 UTCJul 22, 05:25 UTC5m
2026-07-21 AFL1323 - Jul 21, 22:20 UTCJul 21, 22:40 UTC20m
2026-07-21 AFL1322 SVO → MMK Jul 21, 18:35 UTCJul 21, 21:45 UTC3h 10m
2026-07-21 AFL1322 SVO → MMK Jul 21, 17:25 UTCJul 21, 17:40 UTC15m
2026-07-21 AFL1867 EVN → SVO Jul 21, 11:55 UTCJul 21, 12:20 UTC25m
2026-07-21 AFL1866 SVO → EVN Jul 21, 09:45 UTCJul 21, 09:55 UTC10m
2026-07-21 AFL1866 SVO → EVN Jul 21, 07:00 UTCJul 21, 07:40 UTC40m
2026-07-21 AFL1883 FRU → SVO Jul 21, 04:05 UTCJul 21, 04:30 UTC25m
2026-07-21 AFL1883 FRU → SVO Jul 21, 03:15 UTCJul 21, 03:25 UTC10m
2026-07-20 AFL1886 SVO → SVO Jul 20, 07:05 UTCJul 20, 07:30 UTC25m
2026-07-19 AFL1861 - Jul 19, 16:15 UTCJul 19, 16:45 UTC30m
2026-07-19 AFL615 EVN → KRR Jul 19, 10:10 UTCJul 19, 11:00 UTC50m
2026-07-19 AFL1860 SVO → EVN Jul 19, 08:15 UTCJul 19, 08:25 UTC10m
2026-07-11 AFL1882 - Jul 11, 20:35 UTCJul 11, 20:55 UTC20m
2026-07-11 AFL1882 - Jul 11, 19:20 UTCJul 11, 19:50 UTC30m
2026-07-10 AFL1861 - Jul 10, 20:40 UTCJul 10, 21:10 UTC30m
2026-07-10 AFL614 KRR → EVN Jul 10, 19:00 UTCJul 10, 19:10 UTC10m
2026-07-10 AFL615 - Jul 10, 10:10 UTCJul 10, 12:05 UTC1h 55m
2026-07-10 AFL1860 - Jul 10, 08:05 UTCJul 10, 08:15 UTC10m
2026-07-09 AFL1997 EVN → SVO Jul 9, 21:55 UTCJul 9, 22:25 UTC30m
2026-07-09 AFL615 - Jul 9, 16:05 UTCJul 9, 16:50 UTC45m
2026-07-09 AFL1268 - Jul 9, 05:35 UTCJul 9, 06:20 UTC45m
2026-07-08 AFL2147 AYT → SVO Jul 8, 15:20 UTCJul 8, 17:10 UTC1h 50m
2026-07-08 AFL2146 - Jul 8, 13:10 UTCJul 8, 13:40 UTC30m
2026-07-06 AFL1148 SVO → SVO Jul 6, 05:55 UTCJul 6, 06:30 UTC35m
2026-07-05 AFL2147 AYT → SVO Jul 5, 15:30 UTCJul 5, 17:20 UTC1h 50m
2026-07-05 AFL2146 - Jul 5, 13:10 UTCJul 5, 14:05 UTC55m
2026-07-04 AFL1861 - Jul 4, 16:15 UTCJul 5, 13:15 UTC21h 0m
2026-07-04 AFL615 - Jul 4, 10:15 UTCJul 4, 14:25 UTC4h 10m
2026-07-04 AFL1860 - Jul 4, 08:00 UTCJul 4, 08:10 UTC10m
2026-07-03 AFL1861 - Jul 3, 16:20 UTCJul 3, 16:50 UTC30m
2026-07-03 AFL615 - Jul 3, 10:15 UTCJul 3, 11:05 UTC50m
2026-07-03 AFL1073 - Jul 3, 00:55 UTCJul 3, 08:20 UTC7h 25m
2026-07-02 AFL1072 - Jul 2, 05:15 UTCJul 2, 22:50 UTC17h 35m
2026-07-01 AFL1861 - Jul 1, 17:25 UTCJul 2, 05:20 UTC11h 55m
2026-07-01 AFL615 - Jul 1, 10:25 UTCJul 1, 11:15 UTC50m
2026-07-01 AFL1860 SVO → SVO Jul 1, 05:35 UTCJul 1, 06:00 UTC25m
2026-06-30 AFL2171 - Jun 30, 05:00 UTCJun 30, 06:35 UTC1h 35m

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-73717 page for operator, model, and routing details .

Mode-S 151FF5 frequently asked

What is Mode-S code 151FF5?
151FF5 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73717.
Where is Mode-S 151FF5 registered?
Mode-S code 151FF5 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FF5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FF5, octal 05217765, decimal 1,384,437.
What flights does 151FF5 operate?
Mode-S 151FF5 has broadcast 20 distinct callsigns, including AFL615, AFL1861, AFL1860, AFL2142, AFL2143.