Apparatus

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sensors Mode-S transponder

151FEA

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73706 · AIRBUS A-321

Hex
151FEA
Octal
05217752
Decimal
1,384,426
Country
RU
Tail
RA-73706
Type
A321
No current signal · last broadcast Jul 26, 21:55 UTC
Flights observed
200
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 21:55 UTC

Last known position

Most recent position reported by Mode-S 151FEA.

Country allocation

The ICAO 24-bit address 151FEA 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
AFL2136 Aeroflot Russian Airlines 21 2026-07-26
AFL2130 - 15 2026-07-19
AFL2131 - 12 2026-07-19
AFL2137 Aeroflot Russian Airlines 11 2026-07-26
AFL2134 - 10 2026-07-06
AFL1941 - 7 2026-07-11
AFL1137 Aeroflot Russian Airlines 6 2026-05-23
AFL1943 Aeroflot Russian Airlines 5 2026-05-22
AFL1481 - 5 2026-06-28
AFL1138 - 5 2026-07-15
AFL2135 - 4 2026-07-06
AFL1940 Aeroflot Russian Airlines 4 2026-06-11
AFL1524 Aeroflot Russian Airlines 4 2026-07-26
AFL1491 - 4 2026-07-24
AFL1490 Aeroflot Russian Airlines 4 2026-07-25
AFL1487 - 4 2026-04-21
AFL1482 Aeroflot Russian Airlines 4 2026-07-08
AFL1312 Aeroflot Russian Airlines 4 2026-06-14
AFL2126 Aeroflot Russian Airlines 3 2026-05-10
AFL1963 Aeroflot Russian Airlines 3 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFL1524 SVO → RGK Jul 26, 21:25 UTCJul 26, 21:55 UTC30m
2026-07-26 AFL2137 IST → SVO Jul 26, 13:30 UTCJul 26, 13:55 UTC25m
2026-07-26 AFL2136 SVO → IST Jul 26, 10:45 UTCJul 26, 11:00 UTC15m
2026-07-26 AFL2136 SVO → IST Jul 26, 06:05 UTCJul 26, 06:25 UTC20m
2026-07-25 AFL1490 SVO → KJA Jul 25, 13:15 UTCJul 25, 16:15 UTC3h 0m
2026-07-24 AFL1491 - Jul 24, 12:55 UTCJul 24, 18:30 UTC5h 35m
2026-07-23 AFL2137 - Jul 23, 13:05 UTCJul 23, 22:35 UTC9h 30m
2026-07-23 AFL2136 SVO → IST Jul 23, 10:25 UTCJul 23, 11:10 UTC45m
2026-07-22 AFL2136 SVO → IST Jul 22, 15:20 UTCJul 23, 11:10 UTC19h 50m
2026-07-22 AFL2136 SVO → IST Jul 22, 12:45 UTCJul 23, 11:10 UTC22h 25m
2026-07-21 AFL1947 ALA → SVO Jul 21, 16:55 UTCJul 21, 17:45 UTC50m
2026-07-20 AFL1483 KJA → SVO Jul 20, 02:30 UTCJul 20, 08:10 UTC5h 40m
2026-07-19 AFL2131 - Jul 19, 14:45 UTCJul 19, 15:15 UTC30m
2026-07-19 AFL2130 - Jul 19, 12:20 UTCJul 19, 12:40 UTC20m
2026-07-19 AFL2130 - Jul 19, 10:45 UTCJul 19, 11:30 UTC45m
2026-07-19 AFL2130 SVO → SVO Jul 19, 08:05 UTCJul 19, 08:30 UTC25m
2026-07-18 AFL1383 HMA → SVO Jul 18, 05:00 UTCJul 18, 05:15 UTC15m
2026-07-17 AFL1383 HMA → SVO Jul 17, 22:40 UTCJul 18, 04:05 UTC5h 26m
2026-07-17 AFL2131 - Jul 17, 14:39 UTCJul 17, 15:10 UTC30m
2026-07-17 AFL2130 - Jul 17, 12:04 UTCJul 17, 12:35 UTC30m
2026-07-15 AFL026 SVO → SVO Jul 15, 17:10 UTCJul 15, 18:10 UTC1h 0m
2026-07-15 AFL1138 - Jul 15, 07:10 UTCJul 15, 08:05 UTC55m
2026-07-13 AFL2137 - Jul 13, 13:05 UTCJul 13, 13:35 UTC30m
2026-07-13 AFL2136 - Jul 13, 10:15 UTCJul 13, 10:45 UTC30m
2026-07-11 AFL1244 - Jul 11, 21:55 UTCJul 12, 02:01 UTC4h 5m
2026-07-11 AFL2131 - Jul 11, 15:00 UTCJul 11, 15:30 UTC30m
2026-07-11 AFL1941 - Jul 11, 04:35 UTCJul 11, 05:05 UTC30m
2026-07-10 AFL1941 - Jul 10, 07:45 UTCJul 11, 05:05 UTC21h 20m
2026-07-09 AFL1310 - Jul 9, 10:40 UTCJul 10, 08:00 UTC21h 20m
2026-07-09 AFL1483 - Jul 9, 01:45 UTCJul 9, 07:55 UTC6h 10m
2026-07-08 AFL1482 SVO → KJA Jul 8, 22:20 UTCJul 8, 22:35 UTC15m
2026-07-08 AFL2131 - Jul 8, 15:00 UTCJul 8, 15:30 UTC30m
2026-07-08 AFL2130 - Jul 8, 12:15 UTCJul 8, 12:40 UTC25m
2026-07-07 AFL1416 - Jul 7, 07:45 UTCJul 7, 07:55 UTC10m
2026-07-06 AFL2135 - Jul 6, 21:05 UTCJul 6, 21:35 UTC30m
2026-07-06 AFL2134 - Jul 6, 18:55 UTCJul 6, 19:10 UTC15m
2026-07-05 AFL1483 - Jul 5, 16:00 UTCJul 6, 07:45 UTC15h 45m
2026-07-05 AFL1402 SVO → SVO Jul 5, 08:20 UTCJul 5, 08:35 UTC15m
2026-07-04 AFL1491 KJA → SVO Jul 4, 15:30 UTCJul 4, 18:35 UTC3h 5m
2026-07-04 AFL1490 SVO → KJA Jul 4, 13:00 UTCJul 4, 13:25 UTC25m
2026-07-04 AFL1525 SVO → SVO Jul 4, 07:40 UTCJul 4, 07:50 UTC10m
2026-07-03 AFL1491 KJA → SVO Jul 3, 15:10 UTCJul 4, 01:55 UTC10h 45m
2026-07-03 AFL1490 SVO → KJA Jul 3, 09:55 UTCJul 3, 13:00 UTC3h 5m
2026-07-02 AFL1611 SVO → SVO Jul 2, 18:00 UTCJul 2, 18:20 UTC20m
2026-07-02 AFL1610 SVO → SVO Jul 2, 10:15 UTCJul 2, 11:05 UTC50m
2026-07-01 AFL2131 - Jul 1, 15:15 UTCJul 1, 15:45 UTC30m
2026-07-01 AFL2130 - Jul 1, 12:25 UTCJul 1, 12:40 UTC15m
2026-07-01 AFL2130 - Jul 1, 10:35 UTCJul 1, 11:45 UTC1h 10m
2026-07-01 AFL2130 SVO → SVO Jul 1, 08:25 UTCJul 1, 08:50 UTC25m
2026-06-30 AFL2137 IST → SVO Jun 30, 13:30 UTCJun 30, 14:00 UTC30m

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-73706 page for operator, model, and routing details .

Mode-S 151FEA frequently asked

What is Mode-S code 151FEA?
151FEA is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73706.
Where is Mode-S 151FEA registered?
Mode-S code 151FEA is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FEA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FEA, octal 05217752, decimal 1,384,426.
What flights does 151FEA operate?
Mode-S 151FEA has broadcast 20 distinct callsigns, including AFL2136, AFL2130, AFL2131, AFL2137, AFL2134.