Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 4h ago
Flights observed
175
Distinct callsigns
20
Country
RU
Last broadcast
4h 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
AUL1504 Aeroflot-Nord 13 2026-07-17
AUL3308 Aeroflot-Nord 11 2026-07-14
AUL146 - 10 2026-07-10
AUL145 - 10 2026-07-10
AUL308 Aeroflot-Nord 9 2026-07-11
AUL217 Aeroflot-Nord 9 2026-06-30
AUL504 - 8 2026-06-11
AUL503 - 8 2026-07-17
AUL218 Aeroflot-Nord 7 2026-07-14
AUL513 Aeroflot-Nord 6 2026-07-18
AUL508 Aeroflot-Nord 6 2026-07-13
AUL150 Aeroflot-Nord 6 2026-06-22
AUL149 Aeroflot-Nord 6 2026-06-02
AUL518 Aeroflot-Nord 5 2026-06-19
AUL507 Aeroflot-Nord 5 2026-05-27
AUL148 Aeroflot-Nord 5 2026-05-22
AUL307 Aeroflot-Nord 4 2026-06-26
AUL171 - 4 2026-07-15
AUL517 Aeroflot-Nord 3 2026-07-05
AUL514 Aeroflot-Nord 3 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 AUL513 LED → KGD Jul 18, 11:05 UTCJul 18, 12:30 UTC1h 25m
2026-07-18 AUL592 UFA → LED Jul 18, 02:50 UTCJul 18, 03:25 UTC35m
2026-07-18 AUL591 LED → UFA Jul 18, 01:00 UTCJul 18, 01:10 UTC10m
2026-07-17 AUL1504 SCW → LED Jul 17, 15:25 UTCJul 17, 16:55 UTC1h 30m
2026-07-17 AUL503 - Jul 17, 12:35 UTCJul 17, 12:50 UTC15m
2026-07-15 AUL171 - Jul 15, 17:55 UTCJul 15, 18:50 UTC55m
2026-07-15 AUL172 - Jul 15, 13:15 UTCJul 15, 15:50 UTC2h 35m
2026-07-14 AUL218 ARH → SVO Jul 14, 12:50 UTCJul 14, 13:25 UTC35m
2026-07-14 AUL3308 NNM → ARH Jul 14, 11:05 UTCJul 14, 11:45 UTC40m
2026-07-13 AUL514 VOZ → LED Jul 13, 15:10 UTCJul 13, 16:05 UTC55m
2026-07-13 AUL513 LED → KGD Jul 13, 13:25 UTCJul 13, 13:40 UTC15m
2026-07-13 AUL508 MMK → LED Jul 13, 10:00 UTCJul 13, 11:00 UTC1h 0m
2026-07-11 AUL308 NNM → ARH Jul 11, 11:10 UTCJul 11, 11:50 UTC40m
2026-07-10 AUL145 - Jul 10, 08:00 UTCJul 10, 09:20 UTC1h 20m
2026-07-10 AUL146 - Jul 10, 06:05 UTCJul 10, 07:05 UTC1h 0m
2026-07-09 AUL567 - Jul 9, 21:25 UTCJul 9, 21:35 UTC10m
2026-07-09 AUL3308 NNM → ARH Jul 9, 11:10 UTCJul 9, 12:00 UTC50m
2026-07-08 AUL514 VOZ → LED Jul 8, 20:55 UTCJul 8, 21:50 UTC55m
2026-07-08 AUL513 LED → KGD Jul 8, 17:35 UTCJul 8, 18:40 UTC1h 5m
2026-07-08 AUL175 ARH → ARH Jul 8, 12:30 UTCJul 8, 16:20 UTC3h 50m
2026-07-08 AUL505 - Jul 8, 06:15 UTCJul 8, 06:50 UTC35m
2026-07-07 AUL509 - Jul 7, 20:35 UTCJul 7, 20:50 UTC15m
2026-07-07 AUL3308 NNM → ARH Jul 7, 11:10 UTCJul 7, 13:40 UTC2h 30m
2026-07-06 AUL308 NNM → ARH Jul 6, 13:55 UTCJul 7, 12:00 UTC22h 5m
2026-07-05 AUL308 NNM → ARH Jul 5, 16:50 UTCJul 6, 14:45 UTC21h 55m
2026-07-05 AUL517 LED → MMK Jul 5, 11:25 UTCJul 5, 12:10 UTC45m
2026-07-05 AUL1504 SCW → LED Jul 5, 10:20 UTCJul 5, 10:35 UTC15m
2026-07-05 AUL1504 SCW → LED Jul 5, 09:00 UTCJul 5, 09:45 UTC45m
2026-07-05 AUL503 - Jul 5, 06:00 UTCJul 5, 06:10 UTC10m
2026-07-04 AUL308 NNM → ARH Jul 4, 07:00 UTCJul 4, 12:05 UTC5h 5m
2026-07-03 AUL528 - Jul 3, 06:55 UTCJul 3, 07:20 UTC25m
2026-07-02 AUL218 ARH → SVO Jul 2, 13:00 UTCJul 2, 13:30 UTC30m
2026-07-01 AUL1504 SCW → LED Jul 1, 21:25 UTCJul 2, 11:50 UTC14h 25m
2026-07-01 AUL171 - Jul 1, 13:20 UTCJul 1, 18:55 UTC5h 35m
2026-07-01 AUL145 - Jul 1, 09:20 UTCJul 1, 09:30 UTC10m
2026-06-30 AUL217 SVO → ARH Jun 30, 17:00 UTCJun 30, 17:15 UTC15m
2026-06-30 AUL3308 NNM → ARH Jun 30, 11:15 UTCJun 30, 11:55 UTC40m
2026-06-29 AUL308 NNM → ARH Jun 29, 10:59 UTCJun 29, 12:05 UTC1h 5m
2026-06-28 AUL1510 GOJ → LED Jun 28, 15:34 UTCJun 28, 15:44 UTC10m
2026-06-28 AUL1509 - Jun 28, 12:05 UTCJun 28, 12:19 UTC15m
2026-06-28 AUL1504 SCW → LED Jun 28, 08:50 UTCJun 28, 09:30 UTC40m
2026-06-27 AUL175 ARH → ARH Jun 27, 20:24 UTCJun 27, 20:59 UTC35m
2026-06-27 AUL217 SVO → ARH Jun 27, 16:04 UTCJun 27, 16:20 UTC15m
2026-06-26 AUL307 ARH → NNM Jun 26, 16:49 UTCJun 27, 12:39 UTC19h 50m
2026-06-26 AUL1504 SCW → LED Jun 26, 16:20 UTCJun 27, 12:39 UTC20h 20m
2026-06-25 AUL3308 NNM → ARH Jun 25, 11:39 UTCJun 25, 12:25 UTC45m
2026-06-25 AUL146 - Jun 25, 07:05 UTCJun 25, 07:15 UTC10m
2026-06-24 AUL217 SVO → ARH Jun 24, 16:24 UTCJun 24, 16:45 UTC20m
2026-06-24 AUL217 SVO → ARH Jun 24, 15:09 UTCJun 24, 15:24 UTC15m
2026-06-23 AUL3308 NNM → ARH Jun 23, 06:44 UTCJun 23, 11:49 UTC5h 5m

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 4h 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 AUL1504, AUL3308, AUL146, AUL145, AUL308.