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 Jul 26, 18:25 UTC
Flights observed
216
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 18:25 UTC

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 - 14 2026-07-21
AFL2144 - 12 2026-07-21
AFL2146 - 11 2026-07-12
AFL2143 - 9 2026-07-16
AFL2142 - 8 2026-07-16
AFL2171 Aeroflot Russian Airlines 7 2026-07-25
AFL2170 Aeroflot Russian Airlines 7 2026-07-25
AFL2147 Aeroflot Russian Airlines 7 2026-07-12
AFL1011 - 5 2026-06-26
AFL1886 Aeroflot Russian Airlines 4 2026-05-06
AFL1017 - 4 2026-07-24
AFL1010 Aeroflot Russian Airlines 4 2026-05-23
AFL1007 Aeroflot Russian Airlines 4 2026-05-27
AFL1883 - 3 2026-07-09
AFL1450 - 3 2026-06-18
AFL1416 - 3 2026-07-17
AFL1325 Aeroflot Russian Airlines 3 2026-05-19
AFL1024 Aeroflot Russian Airlines 3 2026-06-02
AFL1016 Aeroflot Russian Airlines 3 2026-07-24
AFL1006 - 3 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFL1394 SVO → PEE Jul 26, 18:00 UTCJul 26, 18:25 UTC25m
2026-07-26 AFL1843 MSQ → SVO Jul 26, 11:55 UTCJul 26, 12:10 UTC15m
2026-07-26 AFL1842 SVO → MSQ Jul 26, 09:35 UTCJul 26, 09:50 UTC15m
2026-07-26 AFL1525 RGK → SVO Jul 26, 07:05 UTCJul 26, 07:35 UTC30m
2026-07-25 AFL1524 SVO → RGK Jul 25, 21:40 UTCJul 25, 21:50 UTC10m
2026-07-25 AFL1422 SVO → CEK Jul 25, 13:50 UTCJul 25, 14:05 UTC15m
2026-07-25 AFL2171 IST → SVO Jul 25, 04:50 UTCJul 25, 05:25 UTC35m
2026-07-25 AFL2170 SVO → IST Jul 25, 02:40 UTCJul 25, 02:55 UTC15m
2026-07-24 AFL1214 SVO → SVO Jul 24, 15:10 UTCJul 24, 15:35 UTC25m
2026-07-24 AFL1017 - Jul 24, 10:40 UTCJul 24, 12:35 UTC1h 55m
2026-07-24 AFL1016 SVO → KGD Jul 24, 08:00 UTCJul 24, 08:55 UTC55m
2026-07-23 AFL1837 MSQ → SVO Jul 23, 16:35 UTCJul 23, 16:50 UTC15m
2026-07-23 AFL1033 - Jul 23, 08:50 UTCJul 23, 09:45 UTC55m
2026-07-22 AFL1032 - Jul 22, 18:30 UTCJul 23, 06:45 UTC12h 15m
2026-07-22 AFL1832 SVO → MSQ Jul 22, 16:20 UTCJul 22, 16:30 UTC10m
2026-07-21 AFL2145 - Jul 21, 21:15 UTCJul 21, 21:40 UTC25m
2026-07-21 AFL2145 - Jul 21, 17:30 UTCJul 21, 19:15 UTC1h 45m
2026-07-21 AFL2144 - Jul 21, 15:15 UTCJul 21, 15:50 UTC35m
2026-07-20 AFL010 SVO → LED Jul 20, 07:20 UTCJul 20, 08:20 UTC1h 0m
2026-07-19 AFL2145 - Jul 19, 17:20 UTCJul 19, 19:10 UTC1h 50m
2026-07-19 AFL2144 - Jul 19, 14:15 UTCJul 19, 15:45 UTC1h 30m
2026-07-18 AFL2144 - Jul 18, 19:20 UTCJul 19, 15:45 UTC20h 25m
2026-07-18 AFL2145 - Jul 18, 18:00 UTCJul 19, 15:45 UTC21h 45m
2026-07-18 AFL2144 - Jul 18, 15:50 UTCJul 18, 16:25 UTC35m
2026-07-18 AFL2119 BJV → SVO Jul 18, 09:05 UTCJul 18, 09:30 UTC25m
2026-07-18 AFL2119 BJV → SVO Jul 18, 04:50 UTCJul 18, 06:50 UTC2h 0m
2026-07-18 AFL2118 SVO → BJV Jul 18, 02:50 UTCJul 18, 03:25 UTC35m
2026-07-17 AFL1833 - Jul 17, 19:25 UTCJul 17, 19:35 UTC10m
2026-07-17 AFL1416 - Jul 17, 10:35 UTCJul 17, 10:50 UTC15m
2026-07-17 AFL1416 - Jul 17, 09:30 UTCJul 17, 09:40 UTC10m
2026-07-16 AFL2143 - Jul 16, 11:15 UTCJul 16, 13:00 UTC1h 45m
2026-07-16 AFL2142 - Jul 16, 09:15 UTCJul 16, 09:40 UTC25m
2026-07-15 AFL1006 - Jul 15, 17:40 UTCJul 15, 18:15 UTC35m
2026-07-15 AFL1148 SVO → SVO Jul 15, 05:55 UTCJul 15, 06:20 UTC25m
2026-07-14 AFL1028 - Jul 14, 09:50 UTCJul 14, 10:05 UTC15m
2026-07-13 AFL2143 - Jul 13, 11:25 UTCJul 13, 13:10 UTC1h 45m
2026-07-12 AFL2147 AYT → SVO Jul 12, 18:10 UTCJul 13, 09:30 UTC15h 20m
2026-07-12 AFL2146 - Jul 12, 15:20 UTCJul 12, 15:55 UTC35m
2026-07-11 AFL1942 SVO → ALA Jul 11, 21:30 UTCJul 11, 22:01 UTC30m
2026-07-10 AFL2145 - Jul 10, 19:20 UTCJul 10, 21:00 UTC1h 40m
2026-07-10 AFL2144 - Jul 10, 16:10 UTCJul 10, 17:50 UTC1h 40m
2026-07-09 AFL2147 AYT → SVO Jul 9, 15:20 UTCJul 9, 17:05 UTC1h 45m
2026-07-09 AFL2146 - Jul 9, 11:55 UTCJul 9, 13:40 UTC1h 45m
2026-07-09 AFL2146 SVO → SVO Jul 9, 08:50 UTCJul 9, 09:20 UTC30m
2026-07-09 AFL1883 - Jul 9, 03:25 UTCJul 9, 03:45 UTC20m
2026-07-08 AFL1883 - Jul 8, 08:10 UTCJul 9, 03:45 UTC19h 35m
2026-07-05 AFL2145 AYT → SVO Jul 5, 17:35 UTCJul 5, 19:25 UTC1h 50m
2026-07-05 AFL2144 SVO → AYT Jul 5, 04:55 UTCJul 5, 15:55 UTC11h 0m
2026-07-04 AFL1833 - Jul 4, 19:35 UTCJul 4, 19:50 UTC15m
2026-07-04 AFL2171 - Jul 4, 12:10 UTCJul 4, 13:00 UTC50m

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 Jul 26, 18:25 UTC.
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, AFL2146, AFL2143, AFL2142.