Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

151FB9

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73657 · BOEING 737-800

Hex
151FB9
Octal
05217671
Decimal
1,384,377
Country
RU
Tail
RA-73657
Type
B738
No current signal · last broadcast 2d ago
Flights observed
120
Distinct callsigns
20
Country
RU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 151FB9.

Country allocation

The ICAO 24-bit address 151FB9 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
AUL252 Aeroflot-Nord 10 2026-05-30
AUL251 Aeroflot-Nord 6 2026-05-27
AUL527 Aeroflot-Nord 5 2026-06-20
AUL505 - 5 2026-07-11
AUL507 - 4 2026-07-01
AUL501 - 4 2026-07-09
AUL217 Aeroflot-Nord 4 2026-06-10
AUL585 Aeroflot-Nord 3 2026-07-12
AUL581 Aeroflot-Nord 3 2026-07-09
AUL545 - 3 2026-07-10
AUL537 Aeroflot-Nord 3 2026-07-07
AUL533 Aeroflot-Nord 3 2026-06-30
AUL532 Aeroflot-Nord 3 2026-06-16
AUL521 Aeroflot-Nord 3 2026-04-24
AUL517 Aeroflot-Nord 3 2026-07-04
AUL511 Aeroflot-Nord 3 2026-06-01
AUL509 - 3 2026-06-30
AUL506 - 3 2026-07-03
AUL293 Aeroflot-Nord 3 2026-05-27
AUL218 - 3 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 AUL207 SVO → MCX Jul 15, 15:10 UTCJul 15, 15:25 UTC15m
2026-07-12 AUL585 LED → KRR Jul 12, 11:35 UTCJul 12, 11:50 UTC15m
2026-07-11 AUL505 - Jul 11, 23:15 UTCJul 12, 07:10 UTC7h 55m
2026-07-11 AUL147 ARH → LED Jul 11, 11:25 UTCJul 11, 12:30 UTC1h 5m
2026-07-11 AUL148 LED → ARH Jul 11, 09:15 UTCJul 11, 10:25 UTC1h 10m
2026-07-10 AUL545 - Jul 10, 06:10 UTCJul 10, 06:30 UTC20m
2026-07-09 AUL501 - Jul 9, 22:45 UTCJul 9, 22:55 UTC10m
2026-07-09 AUL581 LED → KUF Jul 9, 15:25 UTCJul 9, 15:45 UTC20m
2026-07-07 AUL537 LED → KZN Jul 7, 17:10 UTCJul 7, 17:25 UTC15m
2026-07-07 AUL146 - Jul 7, 05:55 UTCJul 7, 07:10 UTC1h 15m
2026-07-06 AUL150 LED → SCW Jul 6, 15:50 UTCJul 6, 16:15 UTC25m
2026-07-05 AUL163 - Jul 5, 22:30 UTCJul 5, 23:00 UTC30m
2026-07-04 AUL517 LED → MMK Jul 4, 12:10 UTCJul 4, 12:55 UTC45m
2026-07-03 AUL506 - Jul 3, 09:05 UTCJul 3, 10:00 UTC55m
2026-07-03 AUL505 - Jul 3, 06:45 UTCJul 3, 07:25 UTC40m
2026-07-01 AUL507 - Jul 1, 07:25 UTCJul 1, 08:00 UTC35m
2026-06-30 AUL3103 CEK → KGD Jun 30, 19:30 UTCJul 1, 06:00 UTC10h 30m
2026-06-30 AUL533 LED → KGD Jun 30, 16:15 UTCJun 30, 17:40 UTC1h 25m
2026-06-30 AUL509 LED → LED Jun 30, 08:45 UTCJun 30, 09:15 UTC30m
2026-06-28 AUL573 - Jun 28, 21:50 UTCJun 29, 00:49 UTC3h 0m
2026-06-27 AUL517 LED → MMK Jun 27, 14:39 UTCJun 27, 15:05 UTC25m
2026-06-26 AUL514 VOZ → LED Jun 26, 14:15 UTCJun 26, 15:10 UTC55m
2026-06-26 AUL513 LED → KGD Jun 26, 11:40 UTCJun 26, 12:19 UTC40m
2026-06-26 AUL505 - Jun 26, 05:44 UTCJun 26, 07:05 UTC1h 20m
2026-06-24 AUL164 AER → ARH Jun 24, 11:09 UTCJun 24, 11:24 UTC15m
2026-06-23 AUL858 - Jun 23, 09:24 UTCJun 23, 10:24 UTC1h 0m
2026-06-20 AUL527 LED → CEK Jun 20, 22:05 UTCJun 20, 22:14 UTC10m
2026-06-18 AUL591 LED → UFA Jun 18, 22:50 UTCJun 18, 23:15 UTC25m
2026-06-18 AUL581 LED → KUF Jun 18, 12:30 UTCJun 18, 12:55 UTC25m
2026-06-18 AUL508 MMK → LED Jun 18, 11:00 UTCJun 18, 11:15 UTC15m
2026-06-18 AUL507 LED → MMK Jun 18, 07:15 UTCJun 18, 08:10 UTC55m
2026-06-17 AUL527 LED → CEK Jun 17, 23:35 UTCJun 17, 23:50 UTC15m
2026-06-17 AUL507 LED → MMK Jun 17, 07:20 UTCJun 17, 08:05 UTC45m
2026-06-16 AUL532 KUF → LED Jun 16, 12:05 UTCJun 16, 12:20 UTC15m
2026-06-15 AUL512 - Jun 15, 15:50 UTCJun 15, 16:09 UTC20m
2026-06-14 AUL527 LED → CEK Jun 14, 00:20 UTCJun 14, 00:30 UTC10m
2026-06-12 AUL164 AER → ARH Jun 12, 10:55 UTCJun 12, 11:05 UTC10m
2026-06-12 AUL164 AER → ARH Jun 12, 06:55 UTCJun 12, 07:30 UTC35m
2026-06-11 AUL585 LED → KRR Jun 11, 11:35 UTCJun 11, 12:25 UTC50m
2026-06-11 AUL572 OVB → LED Jun 11, 06:20 UTCJun 11, 06:30 UTC10m
2026-06-11 AUL572 OVB → LED Jun 11, 05:05 UTCJun 11, 05:30 UTC25m
2026-06-10 AUL571 LED → OVB Jun 10, 20:55 UTCJun 10, 21:10 UTC15m
2026-06-10 AUL217 SVO → ARH Jun 10, 15:50 UTCJun 10, 16:15 UTC25m
2026-06-08 AUL148 LED → ARH Jun 8, 11:10 UTCJun 8, 11:20 UTC10m
2026-06-08 AUL509 LED → GOJ Jun 8, 06:10 UTCJun 8, 06:40 UTC30m
2026-06-07 AUL501 SVO → SCW Jun 7, 22:45 UTCJun 7, 23:05 UTC20m
2026-06-07 AUL581 LED → KUF Jun 7, 13:15 UTCJun 7, 13:30 UTC15m
2026-06-07 AUL519 MMK → LED Jun 7, 11:15 UTCJun 7, 12:05 UTC50m
2026-06-06 AUL862 - Jun 6, 08:35 UTCJun 6, 09:30 UTC55m
2026-06-05 AUL163 ARH → AER Jun 5, 14:25 UTCJun 5, 14:50 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-73657 page for operator, model, and routing details .

Mode-S 151FB9 frequently asked

What is Mode-S code 151FB9?
151FB9 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73657.
Where is Mode-S 151FB9 registered?
Mode-S code 151FB9 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FB9 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FB9, octal 05217671, decimal 1,384,377.
What flights does 151FB9 operate?
Mode-S 151FB9 has broadcast 20 distinct callsigns, including AUL252, AUL251, AUL527, AUL505, AUL507.