Apparatus

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sensors Mode-S transponder

151FF8

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73720 · AIRBUS A-321

Hex
151FF8
Octal
05217770
Decimal
1,384,440
Country
RU
Tail
RA-73720
Type
A321
No current signal · last broadcast 20h ago
Flights observed
197
Distinct callsigns
20
Country
RU
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 151FF8.

Country allocation

The ICAO 24-bit address 151FF8 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
AFL2142 Aeroflot Russian Airlines 8 2026-06-08
AFL2171 - 6 2026-07-13
AFL2143 - 6 2026-07-07
AFL1450 Aeroflot Russian Airlines 6 2026-06-03
AFL1002 - 6 2026-06-22
AFL615 - 5 2026-06-13
AFL2145 - 5 2026-07-13
AFL1861 Aeroflot Russian Airlines 5 2026-06-13
AFL1003 - 5 2026-06-22
AFL2170 - 4 2026-07-13
AFL2144 - 4 2026-07-13
AFL1860 Aeroflot Russian Airlines 4 2026-06-13
AFL1011 Aeroflot Russian Airlines 4 2026-06-01
AFL1007 - 4 2026-07-08
AFL614 Aeroflot Russian Airlines 3 2026-06-13
AFL2146 - 3 2026-07-10
AFL2134 Aeroflot Russian Airlines 3 2026-06-14
AFL1962 Aeroflot Russian Airlines 3 2026-05-14
AFL1886 - 3 2026-06-25
AFL1864 Aeroflot Russian Airlines 3 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFL1416 SVO → SVO Jul 14, 06:55 UTCJul 14, 07:15 UTC20m
2026-07-13 AFL2145 - Jul 13, 17:50 UTCJul 13, 19:30 UTC1h 40m
2026-07-13 AFL2144 - Jul 13, 14:25 UTCJul 13, 15:40 UTC1h 15m
2026-07-13 AFL2171 SVO → SVO Jul 13, 09:15 UTCJul 13, 09:30 UTC15m
2026-07-13 AFL2171 - Jul 13, 05:25 UTCJul 13, 05:55 UTC30m
2026-07-13 AFL2170 - Jul 13, 03:15 UTCJul 13, 03:30 UTC15m
2026-07-10 AFL2147 AYT → SVO Jul 10, 15:20 UTCJul 11, 07:45 UTC16h 25m
2026-07-10 AFL2146 - Jul 10, 12:05 UTCJul 10, 13:50 UTC1h 45m
2026-07-10 AFL2146 - Jul 10, 08:50 UTCJul 10, 09:20 UTC30m
2026-07-09 AFL1176 SVO → SVO Jul 9, 05:10 UTCJul 9, 05:40 UTC30m
2026-07-08 AFL1007 - Jul 8, 19:55 UTCJul 8, 21:20 UTC1h 25m
2026-07-08 AFL1485 - Jul 8, 01:05 UTCJul 8, 18:00 UTC16h 55m
2026-07-07 AFL2143 - Jul 7, 11:20 UTCJul 8, 04:15 UTC16h 55m
2026-07-06 AFL1013 - Jul 6, 16:35 UTCJul 7, 09:40 UTC17h 5m
2026-07-06 AFL1012 - Jul 6, 13:50 UTCJul 6, 14:35 UTC45m
2026-07-05 AFL024 SVO → LED Jul 5, 15:25 UTCJul 5, 15:40 UTC15m
2026-07-05 AFL1014 - Jul 5, 05:20 UTCJul 5, 07:20 UTC2h 0m
2026-07-04 AFL1483 - Jul 4, 02:50 UTCJul 4, 06:05 UTC3h 15m
2026-07-02 AFL1484 - Jul 2, 01:40 UTCJul 2, 04:25 UTC2h 45m
2026-07-01 AFL1122 SVO → SVO Jul 1, 11:35 UTCJul 1, 12:15 UTC40m
2026-06-30 AFL1017 - Jun 30, 10:50 UTCJun 30, 12:30 UTC1h 40m
2026-06-29 AFL1032 SVO → KGD Jun 29, 06:05 UTCJun 29, 06:50 UTC45m
2026-06-29 AFL1032 SVO → KGD Jun 29, 04:45 UTCJun 29, 05:04 UTC20m
2026-06-28 AFL1194 - Jun 28, 16:55 UTCJun 28, 19:55 UTC3h 0m
2026-06-28 AFL601 - Jun 28, 08:55 UTCJun 28, 10:00 UTC1h 5m
2026-06-26 AFL1118 - Jun 26, 21:20 UTCJun 26, 22:29 UTC1h 10m
2026-06-25 AFL1882 SVO → FRU Jun 25, 18:50 UTCJun 25, 19:20 UTC30m
2026-06-25 AFL1886 - Jun 25, 06:55 UTCJun 25, 15:20 UTC8h 25m
2026-06-24 AFL2961 - Jun 24, 02:20 UTCJun 24, 03:15 UTC55m
2026-06-22 AFL1870 SVO → TAS Jun 22, 17:34 UTCJun 22, 18:04 UTC30m
2026-06-22 AFL1003 - Jun 22, 13:19 UTCJun 22, 15:14 UTC1h 55m
2026-06-22 AFL1002 - Jun 22, 10:40 UTCJun 22, 11:44 UTC1h 5m
2026-06-22 AFL1002 SVO → SVO Jun 22, 09:24 UTCJun 22, 09:49 UTC25m
2026-06-20 AFL1028 SVO → MRV Jun 20, 09:39 UTCJun 20, 10:04 UTC25m
2026-06-20 AFL1484 - Jun 20, 01:19 UTCJun 20, 04:04 UTC2h 45m
2026-06-19 AFL1082 SVO → GDZ Jun 19, 11:20 UTCJun 19, 11:34 UTC15m
2026-06-19 AFL2171 IST → SVO Jun 19, 08:40 UTCJun 19, 08:59 UTC20m
2026-06-19 AFL2171 IST → SVO Jun 19, 04:50 UTCJun 19, 05:19 UTC30m
2026-06-19 AFL2170 SVO → IST Jun 19, 02:35 UTCJun 19, 02:59 UTC25m
2026-06-18 AFL2170 SVO → IST Jun 18, 22:25 UTCJun 18, 23:15 UTC50m
2026-06-18 AFL1044 SVO → AER Jun 18, 10:05 UTCJun 18, 10:35 UTC30m
2026-06-17 AFL1886 - Jun 17, 08:00 UTCJun 17, 15:25 UTC7h 25m
2026-06-17 AFL1511 - Jun 17, 03:50 UTCJun 17, 04:15 UTC25m
2026-06-15 AFL1915 NQZ → SVO Jun 15, 20:50 UTCJun 15, 21:14 UTC25m
2026-06-15 AFL1015 KGD → SVO Jun 15, 09:00 UTCJun 15, 10:30 UTC1h 30m
2026-06-15 AFL1014 SVO → KGD Jun 15, 06:35 UTCJun 15, 07:20 UTC45m
2026-06-15 AFL2135 IST → SVO Jun 15, 01:10 UTCJun 15, 01:25 UTC15m
2026-06-14 AFL2135 IST → SVO Jun 14, 21:25 UTCJun 14, 21:55 UTC30m
2026-06-14 AFL2134 SVO → IST Jun 14, 19:20 UTCJun 14, 19:50 UTC30m
2026-06-14 AFL2134 SVO → IST Jun 14, 14:40 UTCJun 14, 16:00 UTC1h 20m

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-73720 page for operator, model, and routing details .

Mode-S 151FF8 frequently asked

What is Mode-S code 151FF8?
151FF8 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73720.
Where is Mode-S 151FF8 registered?
Mode-S code 151FF8 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FF8 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FF8, octal 05217770, decimal 1,384,440.
What flights does 151FF8 operate?
Mode-S 151FF8 has broadcast 20 distinct callsigns, including AFL2142, AFL2171, AFL2143, AFL1450, AFL1002.