Apparatus

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sensors Mode-S transponder

151FBC

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73660 · BOEING 737-800

Hex
151FBC
Octal
05217674
Decimal
1,384,380
Country
RU
Tail
RA-73660
Type
B738
No current signal · last broadcast Jul 26, 15:00 UTC
Flights observed
105
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 15:00 UTC

Last known position

Most recent position reported by Mode-S 151FBC.

Country allocation

The ICAO 24-bit address 151FBC 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
AUL506 - 6 2026-07-16
AUL505 Aeroflot-Nord 6 2026-07-23
AUL508 Aeroflot-Nord 5 2026-07-07
AUL533 Aeroflot-Nord 4 2026-06-16
AUL507 - 4 2026-07-07
AUL504 - 4 2026-07-18
AUL251 - 4 2026-06-27
AUL152 Aeroflot-Nord 4 2026-07-07
AUL148 Aeroflot-Nord 4 2026-07-01
AUL585 Aeroflot-Nord 3 2026-07-09
AUL581 Aeroflot-Nord 3 2026-07-16
AUL574 - 3 2026-07-18
AUL573 - 3 2026-07-24
AUL532 Aeroflot-Nord 3 2026-06-12
AUL531 Aeroflot-Nord 3 2026-06-12
AUL218 Aeroflot-Nord 3 2026-07-22
AUL595 Aeroflot-Nord 2 2026-07-25
AUL592 Aeroflot-Nord 2 2026-06-15
AUL571 Aeroflot-Nord 2 2026-06-05
AUL537 Aeroflot-Nord 2 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AUL542 MRV → LED Jul 26, 14:50 UTCJul 26, 15:00 UTC10m
2026-07-26 AUL530 KGD → MMK Jul 26, 01:10 UTCJul 26, 02:15 UTC1h 5m
2026-07-25 AUL595 LED → GDZ Jul 25, 05:50 UTCJul 25, 06:10 UTC20m
2026-07-24 AUL573 - Jul 24, 21:50 UTCJul 25, 02:50 UTC5h 0m
2026-07-24 AUL573 - Jul 24, 18:20 UTCJul 24, 18:30 UTC10m
2026-07-23 AUL505 SVO → SCW Jul 23, 06:30 UTCJul 23, 07:05 UTC35m
2026-07-22 AUL218 ARH → SVO Jul 22, 13:05 UTCJul 22, 13:35 UTC30m
2026-07-18 AUL504 - Jul 18, 20:00 UTCJul 18, 20:50 UTC50m
2026-07-18 AUL574 - Jul 18, 00:19 UTCJul 18, 04:00 UTC3h 41m
2026-07-17 AUL574 - Jul 17, 08:20 UTCJul 18, 04:00 UTC19h 41m
2026-07-16 AUL581 LED → KUF Jul 16, 12:44 UTCJul 17, 08:25 UTC19h 40m
2026-07-16 AUL506 - Jul 16, 09:10 UTCJul 16, 09:55 UTC45m
2026-07-16 AUL505 - Jul 16, 06:50 UTCJul 16, 07:20 UTC30m
2026-07-13 AUL505 - Jul 13, 06:35 UTCJul 13, 07:10 UTC35m
2026-07-09 AUL591 LED → UFA Jul 9, 23:05 UTCJul 9, 23:15 UTC10m
2026-07-09 AUL585 LED → KRR Jul 9, 11:30 UTCJul 9, 11:55 UTC25m
2026-07-07 AUL152 LED → ARH Jul 7, 11:25 UTCJul 7, 11:40 UTC15m
2026-07-07 AUL508 MMK → LED Jul 7, 10:00 UTCJul 7, 10:10 UTC10m
2026-07-07 AUL507 - Jul 7, 06:45 UTCJul 7, 06:55 UTC10m
2026-07-06 AUL151 ARH → LED Jul 6, 11:45 UTCJul 6, 12:00 UTC15m
2026-07-05 AUL573 - Jul 5, 21:50 UTCJul 5, 22:20 UTC30m
2026-07-04 AUL520 LED → MMK Jul 4, 19:10 UTCJul 4, 19:55 UTC45m
2026-07-04 AUL595 LED → GDZ Jul 4, 08:40 UTCJul 4, 09:50 UTC1h 10m
2026-07-03 AUL574 - Jul 3, 21:55 UTCJul 4, 03:45 UTC5h 50m
2026-07-03 AUL546 AER → LED Jul 3, 15:50 UTCJul 3, 16:00 UTC10m
2026-07-01 AUL148 LED → ARH Jul 1, 10:15 UTCJul 1, 11:30 UTC1h 15m
2026-06-28 AUL152 LED → ARH Jun 28, 11:50 UTCJun 28, 12:15 UTC25m
2026-06-27 AUL252 KGD → SVO Jun 27, 10:05 UTCJun 27, 11:09 UTC1h 5m
2026-06-27 AUL251 - Jun 27, 07:39 UTCJun 27, 08:20 UTC40m
2026-06-25 AUL201 SVO → SVO Jun 25, 07:25 UTCJun 25, 07:39 UTC15m
2026-06-24 AUL251 - Jun 24, 07:44 UTCJun 24, 09:49 UTC2h 5m
2026-06-22 AUL506 - Jun 22, 08:35 UTCJun 22, 09:45 UTC1h 10m
2026-06-22 AUL505 - Jun 22, 05:54 UTCJun 22, 07:10 UTC1h 15m
2026-06-21 AUL585 LED → KRR Jun 21, 11:15 UTCJun 21, 11:40 UTC25m
2026-06-21 AUL506 KGD → LED Jun 21, 08:49 UTCJun 21, 09:35 UTC45m
2026-06-21 AUL505 - Jun 21, 05:54 UTCJun 21, 07:04 UTC1h 10m
2026-06-20 AUL504 - Jun 20, 22:30 UTCJun 20, 23:19 UTC50m
2026-06-20 AUL581 LED → KUF Jun 20, 13:49 UTCJun 20, 14:09 UTC20m
2026-06-20 AUL148 LED → ARH Jun 20, 09:19 UTCJun 20, 09:44 UTC25m
2026-06-19 AUL581 LED → KUF Jun 19, 15:59 UTCJun 19, 16:49 UTC50m
2026-06-17 AUL148 LED → ARH Jun 17, 12:05 UTCJun 17, 12:30 UTC25m
2026-06-16 AUL3103 CEK → KGD Jun 16, 19:25 UTCJun 17, 06:20 UTC10h 56m
2026-06-16 AUL533 LED → KGD Jun 16, 16:05 UTCJun 16, 17:19 UTC1h 15m
2026-06-15 AUL592 UFA → LED Jun 15, 11:10 UTCJun 15, 11:24 UTC15m
2026-06-13 AUL504 - Jun 13, 20:20 UTCJun 13, 21:05 UTC45m
2026-06-13 AUL503 LED → SCW Jun 13, 17:00 UTCJun 13, 17:15 UTC15m
2026-06-12 AUL532 KUF → LED Jun 12, 11:30 UTCJun 12, 11:45 UTC15m
2026-06-12 AUL531 LED → KUF Jun 12, 08:10 UTCJun 12, 08:40 UTC30m
2026-06-11 AUL532 KUF → LED Jun 11, 10:40 UTCJun 11, 18:20 UTC7h 40m
2026-06-11 AUL531 LED → KUF Jun 11, 07:40 UTCJun 11, 08:25 UTC45m

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-73660 page for operator, model, and routing details .

Mode-S 151FBC frequently asked

What is Mode-S code 151FBC?
151FBC is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73660.
Where is Mode-S 151FBC registered?
Mode-S code 151FBC is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FBC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FBC, octal 05217674, decimal 1,384,380.
What flights does 151FBC operate?
Mode-S 151FBC has broadcast 20 distinct callsigns, including AUL506, AUL505, AUL508, AUL533, AUL507.