Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

151FBD

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73661 · BOEING 737-800

Hex
151FBD
Octal
05217675
Decimal
1,384,381
Country
RU
Tail
RA-73661
Type
B738
No current signal · last broadcast 16h ago
Flights observed
110
Distinct callsigns
20
Country
RU
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 151FBD.

Country allocation

The ICAO 24-bit address 151FBD 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
AUL581 Aeroflot-Nord 8 2026-07-03
AUL532 Aeroflot-Nord 8 2026-07-03
AUL541 - 7 2026-06-17
AUL507 - 7 2026-07-15
AUL582 Aeroflot-Nord 6 2026-06-04
AUL506 - 6 2026-07-01
AUL533 Aeroflot-Nord 5 2026-07-07
AUL531 - 5 2026-06-15
AUL574 - 4 2026-06-21
AUL572 Aeroflot-Nord 4 2026-06-01
AUL513 Aeroflot-Nord 4 2026-06-30
AUL505 - 4 2026-07-01
AUL514 Aeroflot-Nord 3 2026-06-21
AUL586 Aeroflot-Nord 2 2026-06-24
AUL571 Aeroflot-Nord 2 2026-07-03
AUL529 Aeroflot-Nord 2 2026-06-28
AUL520 Aeroflot-Nord 2 2026-05-30
AUL508 Aeroflot-Nord 2 2026-06-16
AUL503 - 2 2026-07-09
AUL175 Aeroflot-Nord 2 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 AUL502 SCW → SVO Jul 18, 00:35 UTCJul 18, 03:30 UTC2h 56m
2026-07-17 AUL598 KZN → LED Jul 17, 11:39 UTCJul 17, 11:50 UTC10m
2026-07-15 AUL507 - Jul 15, 13:20 UTCJul 16, 08:40 UTC19h 20m
2026-07-09 AUL504 - Jul 9, 20:30 UTCJul 9, 20:50 UTC20m
2026-07-09 AUL503 - Jul 9, 17:05 UTCJul 9, 17:15 UTC10m
2026-07-08 AUL148 LED → ARH Jul 8, 11:00 UTCJul 8, 12:05 UTC1h 5m
2026-07-07 AUL533 LED → KGD Jul 7, 16:10 UTCJul 7, 17:20 UTC1h 10m
2026-07-03 AUL571 LED → OVB Jul 3, 21:00 UTCJul 3, 21:15 UTC15m
2026-07-03 AUL581 LED → KUF Jul 3, 14:30 UTCJul 3, 14:45 UTC15m
2026-07-03 AUL532 KUF → LED Jul 3, 11:25 UTCJul 3, 11:35 UTC10m
2026-07-02 AUL581 LED → KUF Jul 2, 15:35 UTCJul 3, 08:40 UTC17h 5m
2026-07-02 AUL581 LED → KUF Jul 2, 09:50 UTCJul 3, 08:40 UTC22h 50m
2026-07-01 AUL506 - Jul 1, 15:15 UTCJul 1, 16:20 UTC1h 5m
2026-07-01 AUL175 ARH → ARH Jul 1, 08:45 UTCJul 1, 13:55 UTC5h 10m
2026-07-01 AUL505 - Jul 1, 06:20 UTCJul 1, 07:00 UTC40m
2026-06-30 AUL530 KGD → MMK Jun 30, 14:15 UTCJun 30, 20:05 UTC5h 50m
2026-06-30 AUL513 LED → KGD Jun 30, 11:05 UTCJun 30, 12:30 UTC1h 25m
2026-06-28 AUL529 MMK → MMK Jun 28, 02:05 UTCJun 28, 02:39 UTC35m
2026-06-27 AUL581 LED → KUF Jun 27, 15:24 UTCJun 27, 15:39 UTC15m
2026-06-27 AUL148 LED → ARH Jun 27, 11:09 UTCJun 27, 12:04 UTC55m
2026-06-24 AUL586 KRR → LED Jun 24, 12:34 UTCJun 24, 12:54 UTC20m
2026-06-23 AUL507 - Jun 23, 11:29 UTCJun 23, 11:45 UTC15m
2026-06-21 AUL574 - Jun 21, 18:14 UTCJun 22, 04:09 UTC9h 55m
2026-06-21 AUL514 VOZ → LED Jun 21, 14:15 UTCJun 21, 15:19 UTC1h 5m
2026-06-21 AUL217 SVO → ARH Jun 21, 07:25 UTCJun 21, 07:49 UTC25m
2026-06-20 AUL528 CEK → LED Jun 20, 05:39 UTCJun 20, 05:54 UTC15m
2026-06-18 AUL506 KGD → LED Jun 18, 09:35 UTCJun 18, 10:55 UTC1h 20m
2026-06-17 AUL541 LED → LED Jun 17, 12:40 UTCJun 17, 13:05 UTC25m
2026-06-16 AUL503 LED → SCW Jun 16, 17:00 UTCJun 16, 17:19 UTC20m
2026-06-16 AUL152 LED → ARH Jun 16, 13:25 UTCJun 16, 13:55 UTC30m
2026-06-16 AUL508 MMK → LED Jun 16, 11:20 UTCJun 16, 11:30 UTC10m
2026-06-16 AUL507 LED → MMK Jun 16, 08:00 UTCJun 16, 08:10 UTC10m
2026-06-15 AUL532 KUF → LED Jun 15, 12:35 UTCJun 15, 12:49 UTC15m
2026-06-15 AUL532 KUF → LED Jun 15, 11:05 UTCJun 15, 11:15 UTC10m
2026-06-15 AUL531 - Jun 15, 09:30 UTCJun 15, 09:40 UTC10m
2026-06-15 AUL531 - Jun 15, 07:45 UTCJun 15, 08:04 UTC20m
2026-06-14 AUL532 KUF → LED Jun 14, 12:45 UTCJun 14, 12:55 UTC10m
2026-06-13 AUL103 - Jun 13, 19:10 UTCJun 14, 06:00 UTC10h 51m
2026-06-13 AUL533 LED → KGD Jun 13, 17:10 UTCJun 13, 17:25 UTC15m
2026-06-12 AUL574 - Jun 12, 19:35 UTCJun 13, 11:15 UTC15h 39m
2026-06-11 AUL541 - Jun 11, 13:40 UTCJun 11, 13:50 UTC10m
2026-06-10 AUL507 LED → MMK Jun 10, 07:50 UTCJun 10, 08:00 UTC10m
2026-06-09 AUL3103 CEK → KGD Jun 9, 20:05 UTCJun 10, 06:15 UTC10h 10m
2026-06-09 AUL533 LED → KGD Jun 9, 03:35 UTCJun 9, 18:05 UTC14h 30m
2026-06-07 AUL163 ARH → AER Jun 7, 20:45 UTCJun 7, 21:20 UTC35m
2026-06-07 AUL816 CEK → AER Jun 7, 02:04 UTCJun 7, 15:50 UTC13h 45m
2026-06-06 AUL506 KGD → LED Jun 6, 14:59 UTCJun 6, 15:50 UTC50m
2026-06-05 AUL527 LED → CEK Jun 5, 13:50 UTCJun 6, 01:40 UTC11h 50m
2026-06-04 AUL582 KUF → LED Jun 4, 17:20 UTCJun 5, 14:00 UTC20h 40m
2026-06-04 AUL582 KUF → LED Jun 4, 16:30 UTCJun 5, 14:00 UTC21h 30m

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-73661 page for operator, model, and routing details .

Mode-S 151FBD frequently asked

What is Mode-S code 151FBD?
151FBD is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73661.
Where is Mode-S 151FBD registered?
Mode-S code 151FBD is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FBD broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FBD, octal 05217675, decimal 1,384,381.
What flights does 151FBD operate?
Mode-S 151FBD has broadcast 20 distinct callsigns, including AUL581, AUL532, AUL541, AUL507, AUL582.