Apparatus

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sensors Mode-S transponder

151FE4

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73700 · AIRBUS A-330-300

Hex
151FE4
Octal
05217744
Decimal
1,384,420
Country
RU
Tail
RA-73700
Type
A333
No current signal · last broadcast 1d ago
Flights observed
39
Distinct callsigns
8
Country
RU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 151FE4.

Country allocation

The ICAO 24-bit address 151FE4 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 8 distinct

Callsign Airline Flights Last seen
AFL1701 Aeroflot Russian Airlines 14 2026-05-20
AFL1745 Aeroflot Russian Airlines 8 2026-05-29
AFL1713 Aeroflot Russian Airlines 6 2026-05-14
AFL1735 Aeroflot Russian Airlines 4 2026-05-04
AFL1744 - 2 2026-04-18
AFL1743 Aeroflot Russian Airlines 2 2026-05-13
AFL1711 Aeroflot Russian Airlines 2 2026-05-22
AFL1705 Aeroflot Russian Airlines 1 2026-04-13

Recent flights last 39

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFL1745 UUS → SVO May 29, 06:50 UTCMay 29, 08:55 UTC2h 5m
2026-05-22 AFL1711 KHV → SVO May 22, 05:55 UTCMay 22, 07:25 UTC1h 30m
2026-05-20 AFL1701 VVO → SVO May 20, 05:35 UTCMay 20, 06:50 UTC1h 15m
2026-05-18 AFL1711 KHV → SVO May 18, 06:20 UTCMay 18, 08:35 UTC2h 15m
2026-05-14 AFL1713 KHV → SVO May 14, 11:40 UTCMay 14, 14:01 UTC2h 20m
2026-05-13 AFL1743 UUS → SVO May 13, 09:45 UTCMay 13, 11:05 UTC1h 20m
2026-05-12 AFL1743 UUS → SVO May 12, 13:10 UTCMay 13, 11:05 UTC21h 55m
2026-05-12 AFL1713 KHV → SVO May 12, 12:30 UTCMay 13, 11:00 UTC22h 30m
2026-05-09 AFL1713 KHV → SVO May 9, 11:50 UTCMay 9, 13:15 UTC1h 25m
2026-05-06 AFL1713 KHV → SVO May 6, 06:45 UTCMay 6, 07:10 UTC25m
2026-05-04 AFL1735 PKC → SVO May 4, 10:45 UTCMay 4, 22:15 UTC11h 31m
2026-05-03 AFL1735 PKC → SVO May 3, 18:55 UTCMay 4, 11:45 UTC16h 50m
2026-05-03 AFL1713 KHV → SVO May 3, 11:25 UTCMay 4, 10:55 UTC23h 30m
2026-05-02 AFL1713 KHV → SVO May 2, 11:35 UTCMay 2, 13:00 UTC1h 25m
2026-04-29 AFL1701 VVO → SVO Apr 29, 05:55 UTCApr 29, 15:15 UTC9h 21m
2026-04-28 AFL1701 VVO → SVO Apr 28, 14:20 UTCApr 29, 10:45 UTC20h 25m
2026-04-28 AFL1701 VVO → SVO Apr 28, 06:20 UTCApr 28, 14:40 UTC8h 20m
2026-04-27 AFL1701 VVO → SVO Apr 27, 14:05 UTCApr 28, 07:40 UTC17h 35m
2026-04-27 AFL1701 VVO → SVO Apr 27, 07:10 UTCApr 27, 09:10 UTC2h 0m
2026-04-26 AFL1701 VVO → SVO Apr 26, 13:55 UTCApr 27, 09:10 UTC19h 15m
2026-04-26 AFL1745 UUS → SVO Apr 26, 08:30 UTCApr 26, 08:50 UTC20m
2026-04-25 AFL1745 UUS → SVO Apr 25, 14:45 UTCApr 26, 07:55 UTC17h 10m
2026-04-25 AFL1745 UUS → SVO Apr 25, 06:30 UTCApr 25, 07:45 UTC1h 15m
2026-04-22 AFL1701 VVO → SVO Apr 22, 14:00 UTCApr 23, 06:30 UTC16h 30m
2026-04-22 AFL1701 VVO → SVO Apr 22, 04:50 UTCApr 22, 14:05 UTC9h 15m
2026-04-20 AFL1745 UUS → SVO Apr 20, 15:15 UTCApr 21, 07:55 UTC16h 40m
2026-04-19 AFL1745 UUS → SVO Apr 19, 14:40 UTCApr 20, 08:20 UTC17h 40m
2026-04-18 AFL1745 UUS → SVO Apr 18, 15:40 UTCApr 19, 07:50 UTC16h 10m
2026-04-18 AFL1744 - Apr 18, 14:50 UTCApr 18, 15:00 UTC10m
2026-04-18 AFL1745 UUS → SVO Apr 18, 07:45 UTCApr 18, 08:20 UTC35m
2026-04-17 AFL1744 SVO → SVO Apr 17, 15:20 UTCApr 17, 15:40 UTC20m
2026-04-17 AFL1735 PKC → SVO Apr 17, 11:20 UTCApr 17, 11:55 UTC35m
2026-04-17 AFL1735 PKC → SVO Apr 17, 11:00 UTCApr 17, 11:15 UTC15m
2026-04-16 AFL1701 VVO → SVO Apr 16, 07:09 UTCApr 16, 07:39 UTC30m
2026-04-16 AFL1701 VVO → SVO Apr 16, 06:25 UTCApr 16, 07:05 UTC40m
2026-04-15 AFL1701 VVO → SVO Apr 15, 07:20 UTCApr 15, 07:30 UTC10m
2026-04-15 AFL1701 VVO → SVO Apr 15, 05:20 UTCApr 15, 06:35 UTC1h 15m
2026-04-14 AFL1701 - Apr 14, 05:15 UTCApr 14, 06:20 UTC1h 5m
2026-04-13 AFL1705 VVO → SVO Apr 13, 09:10 UTCApr 13, 10:10 UTC1h 0m

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-73700 page for operator, model, and routing details .

Mode-S 151FE4 frequently asked

What is Mode-S code 151FE4?
151FE4 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73700.
Where is Mode-S 151FE4 registered?
Mode-S code 151FE4 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FE4 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FE4, octal 05217744, decimal 1,384,420.
What flights does 151FE4 operate?
Mode-S 151FE4 has broadcast 8 distinct callsigns, including AFL1701, AFL1745, AFL1713, AFL1735, AFL1744.