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 1h ago
Flights observed
158
Distinct callsigns
20
Country
RU
Last broadcast
1h ago

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
AFL850 - 20 2026-07-07
AFL856 - 18 2026-07-08
AFL851 - 16 2026-07-07
AFL644 - 13 2026-07-04
AFL814 - 11 2026-07-06
AFL853 - 10 2026-07-12
AFL857 - 9 2026-07-07
AFL815 - 5 2026-07-05
AFL645 - 5 2026-07-06
AFL852 - 4 2026-06-27
AFL401 Aeroflot Russian Airlines 3 2026-05-16
AFL1487 Aeroflot Russian Airlines 3 2026-06-26
AFL526 - 2 2026-07-11
AFL521 Aeroflot Russian Airlines 2 2026-06-09
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
2026-07-14 AFL1562 - Jul 14, 02:20 UTCJul 14, 07:35 UTC5h 15m
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
2026-07-06 AFL851 - Jul 6, 20:25 UTCJul 7, 16:55 UTC20h 30m
2026-07-06 AFL851 - Jul 6, 17:50 UTCJul 7, 16:55 UTC23h 5m
2026-07-06 AFL851 - Jul 6, 12:10 UTCJul 7, 05:50 UTC17h 40m
2026-07-06 AFL645 - Jul 6, 08:10 UTCJul 7, 05:50 UTC21h 40m
2026-07-06 AFL814 - Jul 6, 05:00 UTCJul 6, 05:50 UTC50m
2026-07-05 AFL814 - Jul 5, 10:25 UTCJul 6, 05:50 UTC19h 25m
2026-07-05 AFL815 - Jul 5, 09:15 UTCJul 6, 05:50 UTC20h 35m
2026-07-04 AFL644 - Jul 4, 12:15 UTCJul 5, 07:30 UTC19h 15m
2026-07-04 AFL644 - Jul 4, 09:50 UTCJul 5, 07:30 UTC21h 40m
2026-07-04 AFL644 - Jul 4, 08:05 UTCJul 5, 07:30 UTC23h 25m
2026-07-04 AFL814 - Jul 4, 04:30 UTCJul 4, 06:05 UTC1h 35m
2026-07-03 AFL814 - Jul 3, 10:25 UTCJul 4, 06:05 UTC19h 40m
2026-07-03 AFL814 - Jul 3, 09:15 UTCJul 4, 06:05 UTC20h 50m
2026-07-02 AFL814 - Jul 2, 09:30 UTCJul 3, 06:45 UTC21h 15m
2026-07-02 AFL644 - Jul 2, 05:45 UTCJul 2, 07:40 UTC1h 55m
2026-07-01 AFL644 - Jul 1, 09:30 UTCJul 2, 07:40 UTC22h 10m
2026-07-01 AFL645 - Jul 1, 06:30 UTCJul 2, 05:45 UTC23h 15m
2026-07-01 AFL645 - Jul 1, 05:25 UTCJul 1, 05:40 UTC15m
2026-06-30 AFL814 - Jun 30, 18:40 UTCJul 1, 03:50 UTC9h 10m
2026-06-27 AFL853 - Jun 27, 21:04 UTCJun 28, 03:00 UTC5h 55m
2026-06-27 AFL852 - Jun 27, 12:34 UTCJun 27, 17:59 UTC5h 25m
2026-06-26 AFL1487 KJA → SVO Jun 26, 13:40 UTCJun 26, 16:49 UTC3h 10m
2026-06-25 AFL1487 KJA → SVO Jun 25, 20:30 UTCJun 26, 16:49 UTC20h 20m
2026-06-23 AFL815 - Jun 23, 09:59 UTCJun 24, 00:25 UTC14h 25m
2026-06-23 AFL644 - Jun 23, 03:49 UTCJun 23, 08:35 UTC4h 45m
2026-06-21 AFL850 KHV → SYX Jun 21, 05:54 UTCJun 22, 00:10 UTC18h 15m
2026-06-21 AFL850 KHV → SYX Jun 21, 03:49 UTCJun 22, 00:10 UTC20h 20m
2026-06-20 AFL850 KHV → SYX Jun 20, 21:49 UTCJun 21, 21:44 UTC23h 55m
2026-06-20 AFL850 KHV → SYX Jun 20, 21:34 UTCJun 21, 17:35 UTC20h 0m
2026-06-20 AFL851 - Jun 20, 09:49 UTCJun 21, 06:10 UTC20h 20m
2026-06-20 AFL851 - Jun 20, 09:09 UTCJun 21, 06:10 UTC21h 0m
2026-06-20 AFL851 - Jun 20, 06:39 UTCJun 21, 03:49 UTC21h 10m
2026-06-18 AFL852 OVB → SYX Jun 18, 15:45 UTCJun 19, 03:09 UTC11h 24m
2026-06-18 AFL1460 SVO → OVB Jun 18, 10:00 UTCJun 18, 10:20 UTC20m
2026-06-16 AFL1481 - Jun 16, 10:04 UTCJun 17, 03:15 UTC17h 11m

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 1h ago.
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 AFL850, AFL856, AFL851, AFL644, AFL814.