Apparatus

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sensors Mode-S transponder

151D85

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73093 · BOEING 737-800

Hex
151D85
Octal
05216605
Decimal
1,383,813
Country
RU
Tail
RA-73093
Type
B738
No current signal · last broadcast 2h ago
Flights observed
211
Distinct callsigns
20
Country
RU
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 151D85.

Country allocation

The ICAO 24-bit address 151D85 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
AFL814 - 31 2026-07-13
AFL644 - 27 2026-07-12
AFL856 - 19 2026-07-13
AFL850 - 19 2026-06-30
AFL857 - 17 2026-06-30
AFL851 - 17 2026-06-29
AFL645 - 16 2026-07-13
AFL853 - 9 2026-06-21
AFL815 - 8 2026-07-12
AFL2124 - 5 2026-07-03
AFL852 Aeroflot Russian Airlines 4 2026-06-25
AFL1460 Aeroflot Russian Airlines 4 2026-06-04
AFL1869 Aeroflot Russian Airlines 3 2026-06-15
AFL7779 - 2 2026-07-14
AFL7775 Aeroflot Russian Airlines 2 2026-04-28
AFL521 Aeroflot Russian Airlines 2 2026-06-24
AFL2125 - 2 2026-07-03
AFL1481 Aeroflot Russian Airlines 2 2026-04-22
AFL1480 Aeroflot Russian Airlines 2 2026-04-28
AFL520 Aeroflot Russian Airlines 1 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFL7779 - Jul 14, 01:45 UTCJul 14, 21:05 UTC19h 20m
2026-07-13 AFL7779 - Jul 13, 20:15 UTCJul 14, 18:25 UTC22h 10m
2026-07-13 AFL856 - Jul 13, 09:20 UTCJul 14, 04:30 UTC19h 10m
2026-07-13 AFL856 - Jul 13, 09:10 UTCJul 14, 04:30 UTC19h 20m
2026-07-13 AFL645 - Jul 13, 08:01 UTCJul 13, 08:15 UTC15m
2026-07-13 AFL814 - Jul 13, 05:55 UTCJul 13, 06:05 UTC10m
2026-07-12 AFL814 - Jul 12, 10:15 UTCJul 13, 05:10 UTC18h 55m
2026-07-12 AFL815 - Jul 12, 09:05 UTCJul 12, 09:20 UTC15m
2026-07-12 AFL644 - Jul 12, 07:10 UTCJul 12, 07:25 UTC15m
2026-07-11 AFL644 - Jul 11, 12:45 UTCJul 12, 06:05 UTC17h 20m
2026-07-11 AFL644 - Jul 11, 09:50 UTCJul 12, 06:05 UTC20h 15m
2026-07-11 AFL645 - Jul 11, 08:25 UTCJul 11, 08:35 UTC10m
2026-07-11 AFL814 - Jul 11, 04:45 UTCJul 11, 06:10 UTC1h 25m
2026-07-10 AFL814 - Jul 10, 09:20 UTCJul 11, 06:10 UTC20h 50m
2026-07-10 AFL814 - Jul 10, 04:40 UTCJul 10, 06:10 UTC1h 30m
2026-07-09 AFL814 - Jul 9, 09:20 UTCJul 10, 06:10 UTC20h 50m
2026-07-09 AFL644 - Jul 9, 02:55 UTCJul 9, 07:25 UTC4h 30m
2026-07-08 AFL644 - Jul 8, 09:50 UTCJul 9, 07:25 UTC21h 35m
2026-07-08 AFL644 - Jul 8, 07:20 UTCJul 9, 07:15 UTC23h 55m
2026-07-08 AFL645 - Jul 8, 05:25 UTCJul 9, 03:20 UTC21h 55m
2026-07-06 AFL1477 - Jul 6, 18:45 UTCJul 7, 01:45 UTC7h 0m
2026-07-05 AFL2169 - Jul 5, 17:35 UTCJul 5, 19:25 UTC1h 50m
2026-07-04 AFL2168 SVO → DLM Jul 4, 23:05 UTCJul 5, 15:55 UTC16h 50m
2026-07-03 AFL2125 - Jul 3, 13:20 UTCJul 3, 15:05 UTC1h 45m
2026-07-03 AFL2124 - Jul 3, 11:30 UTCJul 3, 11:55 UTC25m
2026-07-03 AFL2124 - Jul 3, 10:15 UTCJul 3, 10:50 UTC35m
2026-07-01 AFL856 - Jul 1, 13:10 UTCJul 2, 02:55 UTC13h 45m
2026-06-30 AFL857 - Jun 30, 23:05 UTCJul 1, 15:55 UTC16h 50m
2026-06-30 AFL857 - Jun 30, 16:25 UTCJul 1, 13:25 UTC21h 0m
2026-06-30 AFL857 - Jun 30, 13:50 UTCJul 1, 13:15 UTC23h 25m
2026-06-30 AFL857 - Jun 30, 04:05 UTCJul 1, 01:45 UTC21h 40m
2026-06-30 AFL850 - Jun 30, 01:40 UTCJun 30, 23:20 UTC21h 40m
2026-06-29 AFL851 - Jun 29, 15:30 UTCJun 30, 14:10 UTC22h 41m
2026-06-29 AFL856 - Jun 29, 13:04 UTCJun 30, 04:20 UTC15h 16m
2026-06-28 AFL856 - Jun 28, 21:55 UTCJun 29, 15:45 UTC17h 50m
2026-06-28 AFL856 - Jun 28, 17:19 UTCJun 29, 15:45 UTC22h 25m
2026-06-28 AFL850 - Jun 28, 14:45 UTCJun 29, 13:14 UTC22h 30m
2026-06-28 AFL850 - Jun 28, 00:00 UTCJun 28, 22:04 UTC22h 5m
2026-06-27 AFL851 - Jun 27, 21:34 UTCJun 28, 17:30 UTC19h 55m
2026-06-27 AFL850 - Jun 27, 17:04 UTCJun 28, 15:05 UTC22h 0m
2026-06-27 AFL850 - Jun 27, 14:45 UTCJun 28, 00:15 UTC9h 30m
2026-06-27 AFL851 - Jun 27, 01:44 UTCJun 28, 00:15 UTC22h 30m
2026-06-26 AFL851 - Jun 26, 23:19 UTCJun 27, 21:50 UTC22h 30m
2026-06-26 AFL851 - Jun 26, 15:25 UTCJun 27, 15:00 UTC23h 35m
2026-06-26 AFL851 - Jun 26, 13:10 UTCJun 27, 02:04 UTC12h 55m
2026-06-25 AFL856 - Jun 25, 23:44 UTCJun 26, 23:15 UTC23h 30m
2026-06-25 AFL856 - Jun 25, 21:25 UTCJun 26, 15:39 UTC18h 15m
2026-06-25 AFL852 OVB → SYX Jun 25, 12:44 UTCJun 25, 18:00 UTC5h 15m
2026-06-24 AFL521 DXB → SVO Jun 24, 15:39 UTCJun 25, 13:09 UTC21h 30m
2026-06-24 AFL521 DXB → SVO Jun 24, 12:20 UTCJun 24, 16:19 UTC4h 0m

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-73093 page for operator, model, and routing details .

Mode-S 151D85 frequently asked

What is Mode-S code 151D85?
151D85 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73093.
Where is Mode-S 151D85 registered?
Mode-S code 151D85 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D85 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D85, octal 05216605, decimal 1,383,813.
What flights does 151D85 operate?
Mode-S 151D85 has broadcast 20 distinct callsigns, including AFL814, AFL644, AFL856, AFL850, AFL857.