Apparatus

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sensors Mode-S transponder

151FB3

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73651 · BOEING 737-700

Hex
151FB3
Octal
05217663
Decimal
1,384,371
Country
RU
Tail
RA-73651
Type
B737
No current signal · last broadcast 10h ago
Flights observed
71
Distinct callsigns
20
Country
RU
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 151FB3.

Country allocation

The ICAO 24-bit address 151FB3 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
AUL504 - 7 2026-05-23
AUL149 Aeroflot-Nord 6 2026-06-02
AUL145 Aeroflot-Nord 6 2026-06-01
AUL507 Aeroflot-Nord 5 2026-05-27
AUL148 Aeroflot-Nord 5 2026-05-22
AUL503 Aeroflot-Nord 4 2026-05-26
AUL218 Aeroflot-Nord 4 2026-05-05
AUL146 Aeroflot-Nord 4 2026-05-23
AUL3308 Aeroflot-Nord 3 2026-06-02
AUL217 Aeroflot-Nord 3 2026-04-23
AUL588 Aeroflot-Nord 2 2026-05-29
AUL518 Aeroflot-Nord 2 2026-05-15
AUL517 Aeroflot-Nord 2 2026-04-24
AUL513 Aeroflot-Nord 2 2026-05-11
AUL508 Aeroflot-Nord 2 2026-05-25
AUL3307 Aeroflot-Nord 2 2026-05-05
AUL150 Aeroflot-Nord 2 2026-05-25
AUL587 Aeroflot-Nord 1 2026-04-26
AUL563 Aeroflot-Nord 1 2026-05-23
AUL537 Aeroflot-Nord 1 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 AUL149 ARH → LED Jun 2, 18:00 UTCJun 2, 18:30 UTC30m
2026-06-02 AUL3308 NNM → ARH Jun 2, 11:10 UTCJun 2, 12:00 UTC50m
2026-06-01 AUL145 ARH → LED Jun 1, 13:00 UTCJun 1, 13:35 UTC35m
2026-05-31 AUL537 LED → KZN May 31, 16:25 UTCJun 1, 09:00 UTC16h 35m
2026-05-31 AUL145 ARH → LED May 31, 13:35 UTCJun 1, 09:00 UTC19h 25m
2026-05-29 AUL588 REN → LED May 29, 03:10 UTCMay 29, 03:30 UTC20m
2026-05-28 AUL149 ARH → LED May 28, 17:55 UTCMay 28, 18:30 UTC35m
2026-05-28 AUL3308 NNM → ARH May 28, 11:10 UTCMay 28, 11:55 UTC45m
2026-05-27 AUL507 LED → MMK May 27, 11:30 UTCMay 27, 12:10 UTC40m
2026-05-26 AUL503 LED → SCW May 26, 17:15 UTCMay 26, 17:25 UTC10m
2026-05-25 AUL150 LED → SCW May 25, 15:20 UTCMay 25, 15:40 UTC20m
2026-05-25 AUL508 MMK → LED May 25, 03:35 UTCMay 25, 11:10 UTC7h 35m
2026-05-24 AUL508 MMK → LED May 24, 15:20 UTCMay 25, 11:10 UTC19h 50m
2026-05-24 AUL145 ARH → LED May 24, 12:55 UTCMay 24, 13:30 UTC35m
2026-05-23 AUL504 - May 23, 19:55 UTCMay 24, 11:55 UTC16h 0m
2026-05-23 AUL503 LED → SCW May 23, 17:00 UTCMay 23, 17:15 UTC15m
2026-05-23 AUL563 LED → KUF May 23, 10:35 UTCMay 23, 14:10 UTC3h 35m
2026-05-23 AUL146 LED → ARH May 23, 06:15 UTCMay 23, 06:30 UTC15m
2026-05-22 AUL150 - May 22, 15:30 UTCMay 22, 16:35 UTC1h 5m
2026-05-22 AUL148 LED → ARH May 22, 10:55 UTCMay 22, 11:20 UTC25m
2026-05-22 AUL146 LED → ARH May 22, 06:05 UTCMay 22, 07:10 UTC1h 5m
2026-05-21 AUL504 - May 21, 20:55 UTCMay 21, 21:45 UTC50m
2026-05-19 AUL507 LED → MMK May 19, 15:00 UTCMay 20, 05:20 UTC14h 21m
2026-05-15 AUL518 MMK → LED May 15, 14:05 UTCMay 15, 15:05 UTC59m
2026-05-14 AUL518 MMK → LED May 14, 18:50 UTCMay 15, 15:05 UTC20h 14m
2026-05-14 AUL149 ARH → LED May 14, 18:20 UTCMay 15, 15:05 UTC20h 44m
2026-05-14 AUL146 LED → ARH May 14, 07:10 UTCMay 14, 07:20 UTC10m
2026-05-13 AUL145 ARH → LED May 13, 08:15 UTCMay 13, 12:10 UTC3h 55m
2026-05-11 AUL513 LED → KGD May 11, 03:50 UTCMay 11, 13:35 UTC9h 45m
2026-05-10 AUL148 LED → ARH May 10, 15:09 UTCMay 11, 13:35 UTC22h 25m
2026-05-09 AUL513 LED → KGD May 9, 15:30 UTCMay 9, 16:10 UTC40m
2026-05-06 AUL146 LED → ARH May 6, 05:55 UTCMay 6, 06:15 UTC20m
2026-05-05 AUL218 ARH → SVO May 5, 17:10 UTCMay 5, 17:50 UTC40m
2026-05-05 AUL218 ARH → SVO May 5, 13:05 UTCMay 5, 14:15 UTC1h 10m
2026-05-05 AUL3307 ARH → NNM May 5, 08:35 UTCMay 5, 11:55 UTC3h 20m
2026-05-04 AUL505 SVO → SCW May 4, 07:25 UTCMay 4, 08:50 UTC1h 25m
2026-05-01 AUL148 LED → ARH May 1, 10:55 UTCMay 1, 12:00 UTC1h 5m
2026-04-30 AUL504 - Apr 30, 20:15 UTCApr 30, 20:55 UTC40m
2026-04-30 AUL503 LED → SCW Apr 30, 18:45 UTCApr 30, 18:55 UTC10m
2026-04-30 AUL151 ARH → LED Apr 30, 15:25 UTCApr 30, 16:30 UTC1h 5m
2026-04-29 AUL507 LED → MMK Apr 29, 10:20 UTCApr 30, 00:55 UTC14h 34m
2026-04-28 AUL504 - Apr 28, 20:00 UTCApr 29, 07:10 UTC11h 10m
2026-04-27 AUL148 LED → ARH Apr 27, 11:30 UTCApr 27, 11:55 UTC25m
2026-04-26 AUL587 LED → REN Apr 26, 23:50 UTCApr 27, 03:35 UTC3h 45m
2026-04-26 AUL145 ARH → LED Apr 26, 13:05 UTCApr 26, 13:35 UTC30m
2026-04-24 AUL517 LED → MMK Apr 24, 11:00 UTCApr 24, 18:25 UTC7h 25m
2026-04-23 AUL217 SVO → ARH Apr 23, 15:35 UTCApr 23, 15:45 UTC10m
2026-04-23 AUL218 - Apr 23, 13:15 UTCApr 23, 13:35 UTC20m
2026-04-23 AUL3308 NNM → ARH Apr 23, 11:10 UTCApr 23, 11:50 UTC40m
2026-04-22 AUL149 ARH → LED Apr 22, 17:50 UTCApr 22, 18:15 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-73651 page for operator, model, and routing details .

Mode-S 151FB3 frequently asked

What is Mode-S code 151FB3?
151FB3 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73651.
Where is Mode-S 151FB3 registered?
Mode-S code 151FB3 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FB3 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FB3, octal 05217663, decimal 1,384,371.
What flights does 151FB3 operate?
Mode-S 151FB3 has broadcast 20 distinct callsigns, including AUL504, AUL149, AUL145, AUL507, AUL148.