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 7h ago
Flights observed
104
Distinct callsigns
20
Country
RU
Last broadcast
7h 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 20 distinct

Callsign Airline Flights Last seen
SDM6875 - 34 2026-07-10
SDM6876 - 15 2026-07-13
SDM6747 - 9 2026-07-10
SDM6476 - 6 2026-07-09
SDM6986 - 5 2026-06-28
SDM6551 - 5 2026-07-13
SDM6987 Rossiya - Russian Airlines 4 2026-05-12
SDM6825 Rossiya - Russian Airlines 4 2026-06-27
SDM6826 - 3 2026-06-20
SDM6784 Rossiya - Russian Airlines 3 2026-05-10
SDM6821 Rossiya - Russian Airlines 2 2026-06-03
SDM6791 - 2 2026-07-13
SDM6783 Rossiya - Russian Airlines 2 2026-06-07
SDM7711 - 1 2026-04-21
SDM6988 - 1 2026-04-15
SDM6985 Rossiya - Russian Airlines 1 2026-06-14
SDM6881 Rossiya - Russian Airlines 1 2026-04-20
SDM6841 Rossiya - Russian Airlines 1 2026-06-11
SDM6795 Rossiya - Russian Airlines 1 2026-04-16
SDM6748 Rossiya - Russian Airlines 1 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SDM6551 - Jul 13, 17:40 UTCJul 14, 03:35 UTC9h 55m
2026-07-13 SDM6791 - Jul 13, 08:20 UTCJul 13, 14:35 UTC6h 15m
2026-07-13 SDM6876 - Jul 13, 05:31 UTCJul 13, 06:05 UTC35m
2026-07-10 SDM6875 - Jul 10, 20:15 UTCJul 11, 11:35 UTC15h 20m
2026-07-10 SDM6747 - Jul 10, 12:20 UTCJul 11, 11:35 UTC23h 15m
2026-07-10 SDM6747 - Jul 10, 09:40 UTCJul 10, 20:45 UTC11h 5m
2026-07-10 SDM6747 - Jul 10, 00:05 UTCJul 10, 20:45 UTC20h 40m
2026-07-09 SDM6747 - Jul 9, 23:50 UTCJul 10, 20:45 UTC20h 55m
2026-07-09 SDM6747 - Jul 9, 16:05 UTCJul 10, 13:05 UTC21h 0m
2026-07-09 SDM6551 - Jul 9, 13:55 UTCJul 10, 10:20 UTC20h 25m
2026-07-09 SDM6476 - Jul 9, 06:05 UTCJul 10, 00:30 UTC18h 25m
2026-07-09 SDM6476 - Jul 9, 03:20 UTCJul 10, 00:30 UTC21h 10m
2026-07-08 SDM6476 - Jul 8, 20:05 UTCJul 9, 16:25 UTC20h 20m
2026-07-08 SDM6476 - Jul 8, 18:05 UTCJul 9, 16:25 UTC22h 20m
2026-07-08 SDM6476 - Jul 8, 16:45 UTCJul 9, 16:00 UTC23h 15m
2026-07-08 SDM6476 - Jul 8, 12:15 UTCJul 9, 09:45 UTC21h 30m
2026-07-04 SDM6572 - Jul 4, 22:20 UTCJul 5, 17:45 UTC19h 25m
2026-07-02 SDM6875 - Jul 2, 10:05 UTCJul 2, 22:55 UTC12h 50m
2026-07-01 SDM6875 - Jul 1, 21:40 UTCJul 2, 10:50 UTC13h 10m
2026-07-01 SDM6875 - Jul 1, 10:40 UTCJul 1, 22:20 UTC11h 40m
2026-06-29 SDM6875 - Jun 29, 10:24 UTCJun 30, 01:09 UTC14h 45m
2026-06-28 SDM6875 - Jun 28, 16:05 UTCJun 29, 11:14 UTC19h 10m
2026-06-28 SDM6875 - Jun 28, 15:29 UTCJun 29, 11:14 UTC19h 45m
2026-06-28 SDM6986 - Jun 28, 12:05 UTCJun 29, 11:14 UTC23h 10m
2026-06-28 SDM6986 - Jun 28, 11:55 UTCJun 28, 23:29 UTC11h 35m
2026-06-28 SDM6986 - Jun 28, 02:05 UTCJun 28, 23:29 UTC21h 25m
2026-06-28 SDM6986 - Jun 28, 01:59 UTCJun 28, 23:29 UTC21h 30m
2026-06-27 SDM6986 - Jun 27, 23:00 UTCJun 28, 16:09 UTC17h 10m
2026-06-27 SDM6825 KJA → MCX Jun 27, 13:15 UTCJun 28, 11:59 UTC22h 45m
2026-06-26 SDM6825 KJA → MCX Jun 26, 16:05 UTCJun 27, 14:00 UTC21h 55m
2026-06-26 SDM6747 KJA → KZN Jun 26, 15:25 UTCJun 27, 14:00 UTC22h 35m
2026-06-25 SDM6551 - Jun 25, 23:55 UTCJun 26, 16:09 UTC16h 15m
2026-06-24 SDM6825 KJA → MCX Jun 24, 13:20 UTCJun 24, 14:00 UTC40m
2026-06-22 SDM6551 - Jun 22, 13:39 UTCJun 23, 00:30 UTC10h 50m
2026-06-21 SDM6551 - Jun 21, 22:54 UTCJun 22, 17:29 UTC18h 35m
2026-06-21 SDM6747 KJA → KZN Jun 21, 15:19 UTCJun 22, 13:59 UTC22h 40m
2026-06-20 SDM6826 - Jun 20, 22:30 UTCJun 21, 15:59 UTC17h 30m
2026-06-20 SDM6825 KJA → MCX Jun 20, 13:19 UTCJun 20, 23:14 UTC9h 55m
2026-06-14 SDM6747 KJA → KZN Jun 14, 02:05 UTCJun 14, 22:45 UTC20h 41m
2026-06-14 SDM6985 KJA → MRV Jun 14, 01:25 UTCJun 14, 22:45 UTC21h 21m
2026-06-13 SDM6826 - Jun 13, 22:15 UTCJun 14, 15:25 UTC17h 10m
2026-06-13 SDM6826 - Jun 13, 13:25 UTCJun 14, 02:10 UTC12h 45m
2026-06-12 SDM6876 AER → KJA Jun 12, 21:50 UTCJun 13, 14:10 UTC16h 19m
2026-06-12 SDM6876 AER → KJA Jun 12, 14:45 UTCJun 13, 14:00 UTC23h 14m
2026-06-12 SDM6875 KJA → AER Jun 12, 11:00 UTCJun 12, 23:05 UTC12h 5m
2026-06-11 SDM6841 KJA → SGC Jun 11, 14:30 UTCJun 11, 22:30 UTC8h 0m
2026-06-10 SDM6876 AER → KJA Jun 10, 21:20 UTCJun 10, 22:00 UTC40m
2026-06-10 SDM6875 KJA → AER Jun 10, 10:10 UTCJun 10, 15:25 UTC5h 15m
2026-06-08 SDM6875 KJA → AER Jun 8, 09:55 UTCJun 8, 22:25 UTC12h 30m
2026-06-07 SDM6875 KJA → AER Jun 7, 20:05 UTCJun 8, 14:35 UTC18h 30m

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 7h 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 20 distinct callsigns, including SDM6875, SDM6876, SDM6747, SDM6476, SDM6986.