Apparatus

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sensors Mode-S transponder

151D87

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73095 · BOEING 737-800

Hex
151D87
Octal
05216607
Decimal
1,383,815
Country
RU
Tail
RA-73095
Type
B738
No current signal · last broadcast Jul 26, 21:20 UTC
Flights observed
193
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 21:20 UTC

Last known position

Most recent position reported by Mode-S 151D87.

Country allocation

The ICAO 24-bit address 151D87 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
AFL644 Aeroflot Russian Airlines 23 2026-07-21
AFL850 - 20 2026-07-07
AFL856 - 18 2026-07-08
AFL814 Aeroflot Russian Airlines 18 2026-07-20
AFL851 - 16 2026-07-07
AFL853 - 10 2026-07-12
AFL815 Aeroflot Russian Airlines 10 2026-07-21
AFL645 Aeroflot Russian Airlines 10 2026-07-20
AFL857 - 9 2026-07-07
AFL852 - 4 2026-06-27
AFL521 - 3 2026-07-24
AFL401 Aeroflot Russian Airlines 3 2026-05-16
AFL1487 Aeroflot Russian Airlines 3 2026-06-26
AFL526 - 2 2026-07-11
AFL2132 Aeroflot Russian Airlines 2 2026-05-17
AFL2126 Aeroflot Russian Airlines 2 2026-06-05
AFL2123 Aeroflot Russian Airlines 2 2026-05-18
AFL1995 Aeroflot Russian Airlines 2 2026-05-16
AFL1967 Aeroflot Russian Airlines 2 2026-05-03
AFL1865 Aeroflot Russian Airlines 2 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFL2138 SVO → IST Jul 26, 21:00 UTCJul 26, 21:20 UTC20m
2026-07-25 AFL1440 SVO → IKT Jul 25, 18:00 UTCJul 25, 23:25 UTC5h 25m
2026-07-24 AFL521 - Jul 24, 12:40 UTCJul 24, 13:10 UTC30m
2026-07-23 AFL1863 EVN → SVO Jul 23, 19:20 UTCJul 24, 10:25 UTC15h 5m
2026-07-23 AFL1443 IKT → SVO Jul 23, 01:25 UTCJul 23, 09:45 UTC8h 20m
2026-07-22 AFL1442 SVO → IKT Jul 22, 21:55 UTCJul 22, 22:15 UTC20m
2026-07-22 AFL1481 KJA → SVO Jul 22, 03:55 UTCJul 22, 04:20 UTC25m
2026-07-21 AFL815 SVO → OMS Jul 21, 09:55 UTCJul 22, 03:15 UTC17h 20m
2026-07-21 AFL644 VVO → BKK Jul 21, 03:50 UTCJul 21, 08:30 UTC4h 40m
2026-07-20 AFL644 VVO → BKK Jul 20, 12:10 UTCJul 21, 08:30 UTC20h 19m
2026-07-20 AFL644 VVO → BKK Jul 20, 09:20 UTCJul 21, 07:10 UTC21h 50m
2026-07-20 AFL645 BKK → VVO Jul 20, 08:05 UTCJul 20, 08:15 UTC10m
2026-07-20 AFL814 KUF → SVO Jul 20, 04:45 UTCJul 20, 06:10 UTC1h 25m
2026-07-19 AFL814 KUF → SVO Jul 19, 10:10 UTCJul 20, 06:10 UTC20h 0m
2026-07-19 AFL815 - Jul 19, 09:05 UTCJul 19, 09:15 UTC10m
2026-07-19 AFL644 - Jul 19, 07:05 UTCJul 19, 07:20 UTC15m
2026-07-18 AFL644 - Jul 18, 12:35 UTCJul 19, 06:05 UTC17h 30m
2026-07-18 AFL644 - Jul 18, 09:50 UTCJul 19, 06:05 UTC20h 15m
2026-07-18 AFL645 - Jul 18, 09:30 UTCJul 19, 06:05 UTC20h 35m
2026-07-18 AFL645 - Jul 18, 08:15 UTCJul 18, 08:25 UTC10m
2026-07-18 AFL814 KUF → SVO Jul 18, 05:45 UTCJul 18, 06:00 UTC15m
2026-07-17 AFL815 - Jul 17, 09:50 UTCJul 18, 05:15 UTC19h 26m
2026-07-17 AFL815 - Jul 17, 09:20 UTCJul 18, 05:15 UTC19h 56m
2026-07-17 AFL814 KUF → SVO Jul 17, 06:00 UTCJul 17, 06:20 UTC20m
2026-07-16 AFL814 KUF → SVO Jul 16, 10:29 UTCJul 17, 05:15 UTC18h 45m
2026-07-16 AFL815 - Jul 16, 09:15 UTCJul 17, 05:15 UTC20h 0m
2026-07-16 AFL644 - Jul 16, 07:30 UTCJul 16, 07:50 UTC20m
2026-07-16 AFL644 - Jul 16, 03:20 UTCJul 16, 06:25 UTC3h 5m
2026-07-15 AFL644 - Jul 15, 09:50 UTCJul 16, 06:25 UTC20h 35m
2026-07-15 AFL644 - Jul 15, 09:30 UTCJul 16, 06:25 UTC20h 55m
2026-07-15 AFL645 - Jul 15, 06:30 UTCJul 16, 03:45 UTC21h 15m
2026-07-15 AFL645 - Jul 15, 05:15 UTCJul 15, 05:30 UTC15m
2026-07-15 AFL814 - Jul 15, 03:10 UTCJul 15, 03:25 UTC15m
2026-07-14 AFL814 - Jul 14, 18:30 UTCJul 15, 02:35 UTC8h 4m
2026-07-14 AFL1563 - Jul 14, 07:05 UTCJul 15, 02:35 UTC19h 29m
2026-07-14 AFL1562 - Jul 14, 02:20 UTCJul 14, 18:55 UTC16h 35m
2026-07-12 AFL853 - Jul 12, 13:15 UTCJul 13, 02:45 UTC13h 30m
2026-07-11 AFL527 - Jul 11, 16:20 UTCJul 11, 19:45 UTC3h 25m
2026-07-11 AFL526 - Jul 11, 13:45 UTCJul 11, 14:15 UTC30m
2026-07-11 AFL526 SVO → SVO Jul 11, 08:15 UTCJul 11, 09:15 UTC1h 0m
2026-07-10 AFL2169 - Jul 10, 17:20 UTCJul 10, 19:10 UTC1h 50m
2026-07-10 AFL2168 SVO → DLM Jul 10, 15:30 UTCJul 10, 15:55 UTC25m
2026-07-08 AFL856 - Jul 8, 13:00 UTCJul 9, 02:55 UTC13h 55m
2026-07-08 AFL856 - Jul 8, 01:50 UTCJul 8, 21:15 UTC19h 25m
2026-07-07 AFL857 - Jul 7, 23:30 UTCJul 8, 21:15 UTC21h 45m
2026-07-07 AFL857 - Jul 7, 16:40 UTCJul 8, 15:35 UTC22h 55m
2026-07-07 AFL850 - Jul 7, 14:05 UTCJul 8, 13:15 UTC23h 10m
2026-07-07 AFL850 - Jul 7, 05:50 UTCJul 8, 02:05 UTC20h 15m
2026-07-07 AFL850 - Jul 7, 05:25 UTCJul 8, 02:05 UTC20h 40m
2026-07-07 AFL851 - Jul 7, 02:35 UTCJul 8, 01:45 UTC23h 10m

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-73095 page for operator, model, and routing details .

Mode-S 151D87 frequently asked

What is Mode-S code 151D87?
151D87 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73095.
Where is Mode-S 151D87 registered?
Mode-S code 151D87 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D87 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D87, octal 05216607, decimal 1,383,815.
What flights does 151D87 operate?
Mode-S 151D87 has broadcast 20 distinct callsigns, including AFL644, AFL850, AFL856, AFL814, AFL851.