Apparatus

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sensors Mode-S transponder

151FE1

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73697 · BOEING 777-300ER

Hex
151FE1
Octal
05217741
Decimal
1,384,417
Country
RU
Tail
RA-73697
Type
B77W
No current signal · last broadcast 5h ago
Flights observed
91
Distinct callsigns
20
Country
RU
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 151FE1.

Country allocation

The ICAO 24-bit address 151FE1 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
AFL209 Aeroflot Russian Airlines 12 2026-05-23
AFL232 Aeroflot Russian Airlines 11 2026-05-17
AFL233 Aeroflot Russian Airlines 9 2026-05-17
AFL221 Aeroflot Russian Airlines 7 2026-05-20
AFL205 Aeroflot Russian Airlines 7 2026-05-19
AFL320 Aeroflot Russian Airlines 4 2026-04-30
AFL204 Aeroflot Russian Airlines 4 2026-05-19
AFL1731 Aeroflot Russian Airlines 4 2026-05-16
AFL581 Aeroflot Russian Airlines 3 2026-04-16
AFL321 Aeroflot Russian Airlines 3 2026-04-30
AFL273 Aeroflot Russian Airlines 3 2026-04-28
AFL584 Aeroflot Russian Airlines 2 2026-05-06
AFL580 - 2 2026-04-16
AFL225 Aeroflot Russian Airlines 2 2026-04-22
AFL208 Aeroflot Russian Airlines 2 2026-05-23
AFL1734 Aeroflot Russian Airlines 2 2026-05-29
AFL1730 - 2 2026-04-19
AFL1705 Aeroflot Russian Airlines 2 2026-04-26
AFL1005 Aeroflot Russian Airlines 2 2026-05-05
AFL272 Aeroflot Russian Airlines 1 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFL1734 SVO → PKC May 29, 17:55 UTCMay 29, 19:20 UTC1h 25m
2026-05-27 AFL1713 KHV → SVO May 27, 21:25 UTCMay 28, 12:30 UTC15h 5m
2026-05-23 AFL209 PVG → SVO May 23, 18:20 UTCMay 24, 13:40 UTC19h 20m
2026-05-23 AFL208 SVO → PVG May 23, 17:15 UTCMay 24, 13:40 UTC20h 25m
2026-05-22 AFL209 PVG → SVO May 22, 19:25 UTCMay 23, 12:40 UTC17h 14m
2026-05-22 AFL209 PVG → SVO May 22, 11:40 UTCMay 23, 10:15 UTC22h 34m
2026-05-22 AFL209 PVG → SVO May 22, 09:05 UTCMay 22, 22:00 UTC12h 55m
2026-05-21 AFL209 PVG → SVO May 21, 20:30 UTCMay 22, 19:40 UTC23h 10m
2026-05-21 AFL209 PVG → SVO May 21, 19:00 UTCMay 22, 12:10 UTC17h 10m
2026-05-21 AFL209 PVG → SVO May 21, 11:20 UTCMay 22, 09:55 UTC22h 35m
2026-05-21 AFL209 PVG → SVO May 21, 08:40 UTCMay 21, 21:10 UTC12h 30m
2026-05-20 AFL209 PVG → SVO May 20, 20:20 UTCMay 21, 19:10 UTC22h 50m
2026-05-20 AFL209 PVG → SVO May 20, 12:20 UTCMay 21, 11:50 UTC23h 30m
2026-05-20 AFL209 PVG → SVO May 20, 12:05 UTCMay 21, 09:30 UTC21h 25m
2026-05-20 AFL221 CAN → SVO May 20, 09:20 UTCMay 20, 20:55 UTC11h 35m
2026-05-19 AFL221 CAN → SVO May 19, 20:20 UTCMay 20, 20:15 UTC23h 56m
2026-05-19 AFL221 CAN → SVO May 19, 19:55 UTCMay 20, 12:35 UTC16h 41m
2026-05-19 AFL221 CAN → SVO May 19, 10:20 UTCMay 20, 10:10 UTC23h 51m
2026-05-19 AFL205 PKX → SVO May 19, 07:20 UTCMay 19, 20:30 UTC13h 10m
2026-05-19 AFL205 PKX → SVO May 19, 04:10 UTCMay 19, 04:25 UTC15m
2026-05-19 AFL204 SVO → PKX May 19, 00:50 UTCMay 19, 01:05 UTC15m
2026-05-18 AFL204 SVO → PKX May 18, 02:40 UTCMay 18, 22:15 UTC19h 34m
2026-05-17 AFL232 SVO → DEL May 17, 07:15 UTCMay 18, 00:15 UTC17h 0m
2026-05-17 AFL233 DEL → SVO May 17, 02:50 UTCMay 18, 00:15 UTC21h 25m
2026-05-16 AFL1731 PKC → SVO May 16, 06:41 UTCMay 17, 00:10 UTC17h 30m
2026-05-15 AFL1731 PKC → SVO May 15, 15:05 UTCMay 16, 08:05 UTC17h 1m
2026-05-15 AFL233 DEL → SVO May 15, 02:50 UTCMay 15, 15:50 UTC12h 59m
2026-05-14 AFL1745 UUS → SVO May 14, 06:30 UTCMay 15, 00:30 UTC18h 0m
2026-05-10 AFL233 DEL → SVO May 10, 03:00 UTCMay 10, 07:50 UTC4h 50m
2026-05-09 AFL232 SVO → DEL May 9, 04:25 UTCMay 9, 23:55 UTC19h 30m
2026-05-09 AFL232 SVO → DEL May 9, 00:20 UTCMay 9, 23:55 UTC23h 35m
2026-05-08 AFL233 DEL → SVO May 8, 23:50 UTCMay 9, 04:25 UTC4h 35m
2026-05-08 AFL232 SVO → DEL May 8, 04:19 UTCMay 8, 21:25 UTC17h 5m
2026-05-08 AFL232 SVO → DEL May 8, 00:20 UTCMay 8, 21:25 UTC21h 5m
2026-05-08 AFL233 DEL → SVO May 8, 00:05 UTCMay 8, 21:25 UTC21h 20m
2026-05-07 AFL232 SVO → DEL May 7, 17:10 UTCMay 7, 21:20 UTC4h 10m
2026-05-06 AFL584 NRT → SVO May 6, 03:20 UTCMay 6, 13:35 UTC10h 15m
2026-05-05 AFL584 NRT → SVO May 5, 22:55 UTCMay 5, 23:15 UTC20m
2026-05-05 AFL1005 KGD → SVO May 5, 19:30 UTCMay 5, 19:35 UTC5m
2026-05-05 AFL1005 KGD → SVO May 5, 17:35 UTCMay 5, 18:50 UTC1h 15m
2026-05-05 AFL1004 SVO → KGD May 5, 14:25 UTCMay 5, 15:05 UTC40m
2026-05-04 AFL205 PKX → SVO May 4, 05:10 UTCMay 4, 09:25 UTC4h 15m
2026-05-03 AFL221 CAN → SVO May 3, 09:15 UTCMay 4, 02:19 UTC17h 5m
2026-05-02 AFL221 CAN → SVO May 2, 19:40 UTCMay 3, 12:30 UTC16h 49m
2026-05-02 AFL221 CAN → SVO May 2, 17:40 UTCMay 3, 12:30 UTC18h 49m
2026-05-02 AFL233 DEL → SVO May 2, 00:25 UTCMay 2, 20:10 UTC19h 45m
2026-05-01 AFL205 PKX → SVO May 1, 04:05 UTCMay 1, 21:55 UTC17h 50m
2026-05-01 AFL204 SVO → PKX May 1, 00:55 UTCMay 1, 01:05 UTC10m
2026-04-30 AFL204 SVO → PKX Apr 30, 21:35 UTCApr 30, 22:20 UTC45m
2026-04-30 AFL321 MLE → SVO Apr 30, 14:50 UTCApr 30, 15:25 UTC35m

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-73697 page for operator, model, and routing details .

Mode-S 151FE1 frequently asked

What is Mode-S code 151FE1?
151FE1 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73697.
Where is Mode-S 151FE1 registered?
Mode-S code 151FE1 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FE1 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FE1, octal 05217741, decimal 1,384,417.
What flights does 151FE1 operate?
Mode-S 151FE1 has broadcast 20 distinct callsigns, including AFL209, AFL232, AFL233, AFL221, AFL205.