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 16h ago
Flights observed
178
Distinct callsigns
20
Country
RU
Last broadcast
16h ago

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 - 16 2026-07-13
AFL2130 - 11 2026-07-08
AFL2134 - 10 2026-07-06
AFL2131 - 10 2026-07-11
AFL2137 - 9 2026-07-13
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
AFL2135 - 4 2026-07-06
AFL1940 Aeroflot Russian Airlines 4 2026-06-11
AFL1487 - 4 2026-04-21
AFL1482 Aeroflot Russian Airlines 4 2026-07-08
AFL1312 Aeroflot Russian Airlines 4 2026-06-14
AFL1138 - 4 2026-06-27
AFL2126 Aeroflot Russian Airlines 3 2026-05-10
AFL1963 Aeroflot Russian Airlines 3 2026-04-29
AFL1942 Aeroflot Russian Airlines 3 2026-05-23
AFL1525 - 3 2026-07-04
AFL1524 Aeroflot Russian Airlines 3 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-06-30 AFL2136 - Jun 30, 10:20 UTCJun 30, 10:45 UTC25m
2026-06-28 AFL1481 - Jun 28, 21:14 UTCJun 29, 09:00 UTC11h 45m
2026-06-27 AFL1138 - Jun 27, 11:20 UTCJun 27, 11:44 UTC25m
2026-06-26 AFL1481 - Jun 26, 21:10 UTCJun 27, 03:09 UTC6h 0m
2026-06-24 AFL1177 AER → SVO Jun 24, 12:25 UTCJun 24, 12:40 UTC15m
2026-06-24 AFL1176 SVO → AER Jun 24, 07:40 UTCJun 24, 07:59 UTC20m
2026-06-22 AFL2131 IST → SVO Jun 22, 16:50 UTCJun 22, 17:20 UTC30m
2026-06-22 AFL2130 SVO → IST Jun 22, 14:10 UTCJun 22, 14:40 UTC30m
2026-06-21 AFL2130 SVO → IST Jun 21, 20:59 UTCJun 22, 13:39 UTC16h 40m
2026-06-21 AFL2134 - Jun 21, 18:20 UTCJun 21, 18:35 UTC15m
2026-06-20 AFL1491 KJA → SVO Jun 20, 12:45 UTCJun 20, 15:34 UTC2h 50m
2026-06-20 AFL1490 SVO → KJA Jun 20, 09:19 UTCJun 20, 09:29 UTC10m
2026-06-18 AFL1482 SVO → KJA Jun 18, 23:25 UTCJun 19, 07:49 UTC8h 24m
2026-06-16 AFL1070 SVO → AER Jun 16, 17:15 UTCJun 16, 17:35 UTC20m
2026-06-16 AFL010 - Jun 16, 07:45 UTCJun 16, 08:05 UTC20m
2026-06-15 AFL2135 IST → SVO Jun 15, 20:50 UTCJun 15, 21:20 UTC30m
2026-06-15 AFL2134 SVO → IST Jun 15, 18:20 UTCJun 15, 18:29 UTC10m
2026-06-15 AFL2134 SVO → IST Jun 15, 14:10 UTCJun 15, 14:30 UTC20m
2026-06-15 AFL1517 SGC → SVO Jun 15, 09:15 UTCJun 15, 09:40 UTC25m
2026-06-14 AFL1312 - Jun 14, 12:40 UTCJun 15, 09:40 UTC21h 0m
2026-06-14 AFL1312 SVO → MRV Jun 14, 10:15 UTCJun 14, 10:40 UTC25m
2026-06-14 AFL1967 EVN → SVO Jun 14, 04:35 UTCJun 14, 05:00 UTC25m

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 16h ago.
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, AFL2134, AFL2131, AFL2137.