Apparatus

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sensors Mode-S transponder

151FE7

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73703 · AIRBUS A-321

Hex
151FE7
Octal
05217747
Decimal
1,384,423
Country
RU
Tail
RA-73703
Type
A321
No current signal · last broadcast 8h ago
Flights observed
196
Distinct callsigns
20
Country
RU
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 151FE7.

Country allocation

The ICAO 24-bit address 151FE7 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
AFL421 - 36 2026-06-30
AFL420 - 18 2026-06-29
AFL430 - 17 2026-06-19
AFL431 Aeroflot Russian Airlines 15 2026-06-18
AFL1751 - 8 2026-07-05
AFL427 - 6 2026-07-13
AFL661 Aeroflot Russian Airlines 5 2026-05-06
AFL233 Aeroflot Russian Airlines 5 2026-04-20
AFL232 Aeroflot Russian Airlines 5 2026-04-23
AFL439 - 4 2026-07-11
AFL426 - 4 2026-07-12
AFL2160 Aeroflot Russian Airlines 4 2026-05-02
AFL1645 Aeroflot Russian Airlines 4 2026-05-06
AFL1644 Aeroflot Russian Airlines 4 2026-05-05
AFL480 - 3 2026-07-11
AFL1014 Aeroflot Russian Airlines 3 2026-06-21
AFL1003 Aeroflot Russian Airlines 3 2026-05-04
AFL462 - 2 2026-07-05
AFL438 - 2 2026-07-04
AFL433 Aeroflot Russian Airlines 2 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFL485 - Jul 14, 06:25 UTCJul 14, 07:50 UTC1h 25m
2026-07-13 AFL427 - Jul 13, 12:25 UTCJul 14, 04:10 UTC15h 45m
2026-07-12 AFL426 - Jul 12, 15:50 UTCJul 13, 10:10 UTC18h 20m
2026-07-12 AFL427 - Jul 12, 13:50 UTCJul 13, 10:10 UTC20h 20m
2026-07-12 AFL427 - Jul 12, 13:30 UTCJul 13, 10:10 UTC20h 40m
2026-07-11 AFL426 - Jul 11, 21:50 UTCJul 12, 11:10 UTC13h 20m
2026-07-11 AFL480 - Jul 11, 16:35 UTCJul 11, 19:20 UTC2h 45m
2026-07-11 AFL480 SVO → SVO Jul 11, 13:35 UTCJul 11, 14:10 UTC35m
2026-07-11 AFL439 SVO → SVO Jul 11, 11:15 UTCJul 11, 11:25 UTC10m
2026-07-11 AFL439 - Jul 11, 07:45 UTCJul 11, 09:10 UTC1h 25m
2026-07-11 AFL439 - Jul 11, 06:25 UTCJul 11, 07:40 UTC1h 15m
2026-07-10 AFL427 - Jul 10, 12:40 UTCJul 11, 04:20 UTC15h 40m
2026-07-09 AFL426 - Jul 9, 21:35 UTCJul 10, 10:25 UTC12h 50m
2026-07-09 AFL429 - Jul 9, 05:20 UTCJul 9, 18:30 UTC13h 10m
2026-07-09 AFL428 - Jul 9, 01:30 UTCJul 9, 03:05 UTC1h 35m
2026-07-08 AFL428 SVO → SVO Jul 8, 21:30 UTCJul 8, 22:10 UTC40m
2026-07-08 AFL427 - Jul 8, 08:30 UTCJul 8, 14:55 UTC6h 25m
2026-07-07 AFL423 - Jul 7, 14:05 UTCJul 8, 13:45 UTC23h 40m
2026-07-07 AFL423 - Jul 7, 10:10 UTCJul 8, 09:45 UTC23h 35m
2026-07-05 AFL1751 - Jul 5, 20:40 UTCJul 6, 08:30 UTC11h 50m
2026-07-05 AFL463 - Jul 5, 07:10 UTCJul 5, 10:05 UTC2h 55m
2026-07-05 AFL462 - Jul 5, 03:00 UTCJul 5, 04:35 UTC1h 35m
2026-07-04 AFL462 SVO → SVO Jul 4, 22:55 UTCJul 4, 23:20 UTC25m
2026-07-04 AFL439 SSH → SVO Jul 4, 15:30 UTCJul 4, 18:30 UTC3h 0m
2026-07-04 AFL438 - Jul 4, 11:15 UTCJul 4, 13:25 UTC2h 10m
2026-07-04 AFL438 SVO → SVO Jul 4, 07:55 UTCJul 4, 08:20 UTC25m
2026-07-03 AFL427 - Jul 3, 12:25 UTCJul 3, 15:20 UTC2h 55m
2026-07-02 AFL426 - Jul 2, 21:15 UTCJul 3, 10:20 UTC13h 5m
2026-07-02 AFL480 - Jul 2, 05:20 UTCJul 2, 18:35 UTC13h 15m
2026-07-01 AFL422 - Jul 1, 08:20 UTCJul 2, 03:05 UTC18h 45m
2026-06-30 AFL422 - Jun 30, 19:50 UTCJul 1, 14:55 UTC19h 5m
2026-06-30 AFL421 - Jun 30, 17:50 UTCJul 1, 14:55 UTC21h 5m
2026-06-29 AFL420 - Jun 29, 19:49 UTCJun 30, 15:35 UTC19h 46m
2026-06-29 AFL420 - Jun 29, 17:59 UTCJun 30, 15:35 UTC21h 36m
2026-06-29 AFL420 - Jun 29, 13:49 UTCJun 30, 13:25 UTC23h 36m
2026-06-29 AFL421 - Jun 29, 13:39 UTCJun 29, 20:44 UTC7h 5m
2026-06-28 AFL421 - Jun 28, 12:39 UTCJun 28, 20:39 UTC8h 0m
2026-06-27 AFL421 - Jun 27, 23:50 UTCJun 28, 20:39 UTC20h 50m
2026-06-27 AFL421 - Jun 27, 23:34 UTCJun 28, 20:39 UTC21h 5m
2026-06-26 AFL1751 - Jun 26, 10:55 UTCJun 26, 11:14 UTC20m
2026-06-25 AFL1751 - Jun 25, 21:29 UTCJun 26, 09:45 UTC12h 15m
2026-06-25 AFL1751 - Jun 25, 11:50 UTCJun 26, 09:45 UTC21h 55m
2026-06-25 AFL1751 - Jun 25, 10:35 UTCJun 26, 09:45 UTC23h 10m
2026-06-23 AFL1751 - Jun 23, 21:29 UTCJun 24, 10:19 UTC12h 50m
2026-06-23 AFL1751 - Jun 23, 09:54 UTCJun 23, 11:24 UTC1h 30m
2026-06-22 AFL1751 - Jun 22, 09:19 UTCJun 22, 10:15 UTC55m
2026-06-21 AFL1301 MRV → SVO Jun 21, 19:34 UTCJun 21, 20:00 UTC25m
2026-06-21 AFL1015 KGD → SVO Jun 21, 09:04 UTCJun 21, 10:09 UTC1h 5m
2026-06-21 AFL1014 SVO → KGD Jun 21, 05:10 UTCJun 21, 07:20 UTC2h 10m
2026-06-20 AFL433 HRG → SVO Jun 20, 16:24 UTCJun 20, 18:59 UTC2h 35m

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-73703 page for operator, model, and routing details .

Mode-S 151FE7 frequently asked

What is Mode-S code 151FE7?
151FE7 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73703.
Where is Mode-S 151FE7 registered?
Mode-S code 151FE7 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FE7 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FE7, octal 05217747, decimal 1,384,423.
What flights does 151FE7 operate?
Mode-S 151FE7 has broadcast 20 distinct callsigns, including AFL421, AFL420, AFL430, AFL431, AFL1751.