Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

151FB4

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73652 · BOEING 737-700

Hex
151FB4
Octal
05217664
Decimal
1,384,372
Country
RU
Tail
RA-73652
Type
B737
No current signal · last broadcast 10h ago
Flights observed
135
Distinct callsigns
20
Country
RU
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 151FB4.

Country allocation

The ICAO 24-bit address 151FB4 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 - 12 2026-06-08
AUL514 Aeroflot-Nord 11 2026-07-07
AUL513 Aeroflot-Nord 11 2026-07-07
AUL146 - 10 2026-07-08
AUL507 - 8 2026-07-06
AUL145 - 7 2026-07-13
AUL217 Aeroflot-Nord 6 2026-06-23
AUL588 - 5 2026-07-05
AUL503 - 5 2026-07-10
AUL518 Aeroflot-Nord 4 2026-06-12
AUL517 Aeroflot-Nord 4 2026-07-12
AUL509 - 4 2026-07-05
AUL505 - 4 2026-06-17
AUL3308 Aeroflot-Nord 4 2026-05-26
AUL176 Aeroflot-Nord 4 2026-06-17
AUL537 Aeroflot-Nord 3 2026-07-12
AUL530 Aeroflot-Nord 3 2026-06-16
AUL510 Aeroflot-Nord 3 2026-07-05
AUL508 Aeroflot-Nord 3 2026-06-15
AUL506 Aeroflot-Nord 3 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AUL150 LED → SCW Jul 13, 15:35 UTCJul 13, 16:40 UTC1h 5m
2026-07-13 AUL145 - Jul 13, 14:00 UTCJul 13, 14:25 UTC25m
2026-07-12 AUL537 LED → KZN Jul 12, 16:30 UTCJul 12, 16:40 UTC10m
2026-07-12 AUL517 LED → MMK Jul 12, 11:20 UTCJul 12, 12:05 UTC45m
2026-07-10 AUL503 - Jul 10, 12:30 UTCJul 10, 12:40 UTC10m
2026-07-08 AUL171 - Jul 8, 18:10 UTCJul 8, 19:10 UTC1h 0m
2026-07-08 AUL172 - Jul 8, 15:00 UTCJul 8, 15:40 UTC40m
2026-07-08 AUL146 - Jul 8, 06:35 UTCJul 8, 07:10 UTC35m
2026-07-07 AUL514 VOZ → LED Jul 7, 22:35 UTCJul 7, 22:45 UTC10m
2026-07-07 AUL513 LED → KGD Jul 7, 11:45 UTCJul 7, 12:25 UTC40m
2026-07-06 AUL514 VOZ → LED Jul 6, 16:40 UTCJul 6, 18:00 UTC1h 20m
2026-07-06 AUL507 - Jul 6, 08:15 UTCJul 6, 15:10 UTC6h 55m
2026-07-05 AUL510 GOJ → LED Jul 5, 10:55 UTCJul 5, 11:10 UTC15m
2026-07-05 AUL509 - Jul 5, 07:35 UTCJul 5, 07:50 UTC15m
2026-07-05 AUL588 - Jul 5, 04:35 UTCJul 5, 04:45 UTC10m
2026-07-04 AUL587 LED → REN Jul 4, 23:45 UTCJul 5, 00:05 UTC20m
2026-06-28 AUL149 ARH → LED Jun 28, 19:04 UTCJun 28, 19:29 UTC25m
2026-06-28 AUL150 LED → SCW Jun 28, 18:00 UTCJun 28, 18:10 UTC10m
2026-06-28 AUL588 - Jun 28, 03:19 UTCJun 28, 03:29 UTC10m
2026-06-27 AUL514 VOZ → LED Jun 27, 14:05 UTCJun 27, 14:45 UTC40m
2026-06-26 AUL145 - Jun 26, 14:29 UTCJun 26, 14:59 UTC30m
2026-06-26 AUL507 - Jun 26, 07:39 UTCJun 26, 07:50 UTC10m
2026-06-25 AUL507 - Jun 25, 01:19 UTCJun 25, 18:19 UTC17h 0m
2026-06-24 AUL171 - Jun 24, 17:50 UTCJun 25, 13:55 UTC20h 5m
2026-06-24 AUL145 - Jun 24, 08:14 UTCJun 24, 15:54 UTC7h 40m
2026-06-23 AUL217 SVO → ARH Jun 23, 16:39 UTCJun 23, 17:09 UTC30m
2026-06-19 AUL507 LED → MMK Jun 19, 04:54 UTCJun 19, 07:59 UTC3h 5m
2026-06-18 AUL588 REN → LED Jun 18, 05:55 UTCJun 18, 06:10 UTC15m
2026-06-17 AUL506 KGD → LED Jun 17, 15:20 UTCJun 17, 16:20 UTC1h 0m
2026-06-17 AUL176 KGD → ARH Jun 17, 08:30 UTCJun 17, 10:30 UTC2h 0m
2026-06-17 AUL505 - Jun 17, 05:45 UTCJun 17, 06:45 UTC1h 0m
2026-06-16 AUL514 VOZ → LED Jun 16, 22:00 UTCJun 16, 22:55 UTC55m
2026-06-16 AUL530 KGD → MMK Jun 16, 14:00 UTCJun 16, 19:55 UTC5h 56m
2026-06-16 AUL513 LED → KGD Jun 16, 11:00 UTCJun 16, 12:14 UTC1h 15m
2026-06-15 AUL513 LED → KGD Jun 15, 15:10 UTCJun 15, 16:19 UTC1h 10m
2026-06-15 AUL508 MMK → LED Jun 15, 10:09 UTCJun 15, 14:15 UTC4h 5m
2026-06-14 AUL588 REN → LED Jun 14, 05:00 UTCJun 14, 05:10 UTC10m
2026-06-13 AUL537 LED → KZN Jun 13, 16:15 UTCJun 14, 00:55 UTC8h 40m
2026-06-12 AUL518 MMK → LED Jun 12, 14:45 UTCJun 12, 15:05 UTC20m
2026-06-12 AUL517 LED → MMK Jun 12, 11:00 UTCJun 12, 11:50 UTC50m
2026-06-12 AUL145 ARH → LED Jun 12, 09:05 UTCJun 12, 09:20 UTC15m
2026-06-10 AUL171 - Jun 10, 20:55 UTCJun 11, 11:55 UTC15h 0m
2026-06-10 AUL172 - Jun 10, 16:25 UTCJun 10, 19:15 UTC2h 50m
2026-06-10 AUL176 KGD → ARH Jun 10, 08:35 UTCJun 10, 09:35 UTC1h 0m
2026-06-10 AUL505 SVO → SCW Jun 10, 06:05 UTCJun 10, 07:00 UTC55m
2026-06-09 AUL530 KGD → MMK Jun 9, 14:00 UTCJun 9, 22:45 UTC8h 45m
2026-06-09 AUL513 LED → KGD Jun 9, 11:05 UTCJun 9, 12:25 UTC1h 20m
2026-06-08 AUL504 - Jun 8, 20:10 UTCJun 8, 20:50 UTC40m
2026-06-08 AUL514 VOZ → LED Jun 8, 15:10 UTCJun 8, 16:15 UTC1h 5m
2026-06-08 AUL508 MMK → LED Jun 8, 10:00 UTCJun 8, 13:35 UTC3h 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-73652 page for operator, model, and routing details .

Mode-S 151FB4 frequently asked

What is Mode-S code 151FB4?
151FB4 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73652.
Where is Mode-S 151FB4 registered?
Mode-S code 151FB4 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FB4 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 151FB4, octal 05217664, decimal 1,384,372.
What flights does 151FB4 operate?
Mode-S 151FB4 has broadcast 20 distinct callsigns, including AUL504, AUL514, AUL513, AUL146, AUL507.