Apparatus

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sensors Mode-S transponder

151DF8

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73208 · BOEING 737-800

Hex
151DF8
Octal
05216770
Decimal
1,383,928
Country
RU
Tail
RA-73208
Type
B738
No current signal · last broadcast 22h ago
Flights observed
49
Distinct callsigns
13
Country
RU
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S 151DF8.

Country allocation

The ICAO 24-bit address 151DF8 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 13 distinct

Callsign Airline Flights Last seen
SDM6875 Rossiya - Russian Airlines 22 2026-05-27
SDM6876 Rossiya - Russian Airlines 11 2026-05-28
SDM6987 Rossiya - Russian Airlines 4 2026-05-12
SDM6784 Rossiya - Russian Airlines 3 2026-05-10
SDM7711 - 1 2026-04-21
SDM6988 - 1 2026-04-15
SDM6881 Rossiya - Russian Airlines 1 2026-04-20
SDM6821 Rossiya - Russian Airlines 1 2026-05-20
SDM6795 Rossiya - Russian Airlines 1 2026-04-16
SDM6791 Rossiya - Russian Airlines 1 2026-04-13
SDM6783 Rossiya - Russian Airlines 1 2026-04-19
SDM6678 - 1 2026-04-12
6796 - 1 2026-04-16

Recent flights last 49

DateFlightRouteTakeoffLandingDuration
2026-05-28 SDM6876 AER → KJA May 28, 20:45 UTCMay 29, 10:10 UTC13h 25m
2026-05-28 SDM6876 AER → KJA May 28, 10:05 UTCMay 29, 10:00 UTC23h 55m
2026-05-27 SDM6876 AER → KJA May 27, 20:45 UTCMay 28, 10:40 UTC13h 55m
2026-05-27 SDM6875 KJA → AER May 27, 10:05 UTCMay 28, 10:00 UTC23h 55m
2026-05-27 SDM6876 AER → KJA May 27, 02:04 UTCMay 27, 21:50 UTC19h 46m
2026-05-27 SDM6876 AER → KJA May 27, 01:34 UTCMay 27, 21:50 UTC20h 16m
2026-05-26 SDM6875 KJA → AER May 26, 14:05 UTCMay 27, 10:55 UTC20h 50m
2026-05-26 SDM6875 KJA → AER May 26, 13:54 UTCMay 27, 10:55 UTC21h 0m
2026-05-25 SDM6876 AER → KJA May 25, 21:24 UTCMay 26, 14:30 UTC17h 5m
2026-05-25 SDM6875 KJA → AER May 25, 10:35 UTCMay 25, 22:05 UTC11h 30m
2026-05-23 SDM6875 KJA → AER May 23, 11:05 UTCMay 23, 23:15 UTC12h 11m
2026-05-20 SDM6821 KJA → TJM May 20, 06:50 UTCMay 20, 12:20 UTC5h 30m
2026-05-18 SDM6875 KJA → AER May 18, 10:00 UTCMay 18, 22:30 UTC12h 29m
2026-05-16 SDM6875 KJA → AER May 16, 11:05 UTCMay 16, 23:10 UTC12h 5m
2026-05-14 SDM6875 KJA → AER May 14, 10:31 UTCMay 14, 22:10 UTC11h 40m
2026-05-13 SDM6875 KJA → AER May 13, 22:05 UTCMay 14, 22:00 UTC23h 55m
2026-05-13 SDM6876 AER → KJA May 13, 18:10 UTCMay 14, 13:45 UTC19h 35m
2026-05-13 SDM6875 KJA → AER May 13, 14:05 UTCMay 14, 13:45 UTC23h 40m
2026-05-13 SDM6875 KJA → AER May 13, 13:50 UTCMay 14, 10:55 UTC21h 5m
2026-05-13 SDM6875 KJA → AER May 13, 10:00 UTCMay 13, 22:05 UTC12h 5m
2026-05-12 SDM6875 KJA → AER May 12, 17:05 UTCMay 13, 15:05 UTC22h 0m
2026-05-12 SDM6987 KJA → MRV May 12, 14:05 UTCMay 13, 14:00 UTC23h 55m
2026-05-12 SDM6987 KJA → MRV May 12, 13:35 UTCMay 13, 10:45 UTC21h 10m
2026-05-11 SDM6987 KJA → MRV May 11, 22:05 UTCMay 12, 18:00 UTC19h 55m
2026-05-11 SDM6875 KJA → AER May 11, 14:25 UTCMay 12, 14:00 UTC23h 36m
2026-05-11 SDM6875 KJA → AER May 11, 10:45 UTCMay 11, 22:15 UTC11h 30m
2026-05-10 SDM6875 KJA → AER May 10, 20:05 UTCMay 11, 15:15 UTC19h 10m
2026-05-10 SDM6875 KJA → AER May 10, 19:45 UTCMay 11, 15:15 UTC19h 30m
2026-05-10 SDM6784 OSS → KJA May 10, 14:34 UTCMay 11, 11:25 UTC20h 50m
2026-05-10 SDM6784 OSS → KJA May 10, 05:25 UTCMay 10, 21:00 UTC15h 35m
2026-05-10 SDM6784 OSS → KJA May 10, 01:09 UTCMay 10, 21:00 UTC19h 50m
2026-04-21 SDM7711 - Apr 21, 23:55 UTCApr 22, 03:10 UTC3h 15m
2026-04-20 SDM6875 KJA → AER Apr 20, 04:35 UTCApr 20, 21:35 UTC17h 0m
2026-04-20 SDM6881 KJA → IKT Apr 20, 02:30 UTCApr 20, 02:45 UTC15m
2026-04-19 SDM6783 KJA → OSS Apr 19, 14:25 UTCApr 19, 21:15 UTC6h 50m
2026-04-18 SDM6875 KJA → AER Apr 18, 11:00 UTCApr 18, 23:00 UTC12h 0m
2026-04-16 SDM6876 AER → KJA Apr 16, 21:30 UTCApr 16, 22:10 UTC40m
2026-04-16 SDM6876 AER → KJA Apr 16, 17:15 UTCApr 16, 17:50 UTC35m
2026-04-16 SDM6875 KJA → AER Apr 16, 10:09 UTCApr 16, 10:59 UTC50m
2026-04-16 6796 - Apr 16, 07:09 UTCApr 16, 07:29 UTC20m
2026-04-16 SDM6795 KJA → FRU Apr 16, 01:10 UTCApr 16, 01:50 UTC40m
2026-04-15 SDM6876 AER → KJA Apr 15, 21:30 UTCApr 15, 22:10 UTC40m
2026-04-15 SDM6875 KJA → AER Apr 15, 10:05 UTCApr 15, 10:50 UTC45m
2026-04-15 SDM6988 - Apr 15, 00:10 UTCApr 15, 00:50 UTC40m
2026-04-14 SDM6987 - Apr 14, 13:45 UTCApr 14, 14:25 UTC40m
2026-04-13 SDM6876 - Apr 13, 21:15 UTCApr 13, 22:00 UTC45m
2026-04-13 SDM6875 - Apr 13, 10:15 UTCApr 13, 11:00 UTC45m
2026-04-13 SDM6791 KJA → SVX Apr 13, 02:10 UTCApr 13, 02:50 UTC40m
2026-04-12 SDM6678 - Apr 12, 17:45 UTCApr 12, 18:00 UTC15m

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-73208 page for operator, model, and routing details .

Mode-S 151DF8 frequently asked

What is Mode-S code 151DF8?
151DF8 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73208.
Where is Mode-S 151DF8 registered?
Mode-S code 151DF8 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DF8 broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DF8, octal 05216770, decimal 1,383,928.
What flights does 151DF8 operate?
Mode-S 151DF8 has broadcast 13 distinct callsigns, including SDM6875, SDM6876, SDM6987, SDM6784, SDM7711.