Apparatus

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sensors Mode-S transponder

151DF3

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73203 · AIRBUS A-319

Hex
151DF3
Octal
05216763
Decimal
1,383,923
Country
RU
Tail
RA-73203
Type
A319
No current signal · last broadcast 3h ago
Flights observed
84
Distinct callsigns
20
Country
RU
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 151DF3.

Country allocation

The ICAO 24-bit address 151DF3 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
SDM6725 - 14 2026-05-31
SDM6721 Rossiya - Russian Airlines 10 2026-06-01
SDM6722 Rossiya - Russian Airlines 8 2026-06-01
SDM6795 Rossiya - Russian Airlines 7 2026-06-02
SDM6783 Rossiya - Russian Airlines 5 2026-05-17
SDM6726 - 4 2026-05-31
SDM6881 Rossiya - Russian Airlines 3 2026-05-13
SDM6621 Rossiya - Russian Airlines 3 2026-05-28
SDM6986 Rossiya - Russian Airlines 2 2026-05-17
SDM6923 Rossiya - Russian Airlines 2 2026-05-05
SDM6875 Rossiya - Russian Airlines 2 2026-04-24
SDM6572 Rossiya - Russian Airlines 2 2026-05-04
SDM6442 Rossiya - Russian Airlines 2 2026-04-28
SDM6332 Rossiya - Russian Airlines 2 2026-05-06
SDM6331 Rossiya - Russian Airlines 2 2026-05-06
SDM6973 Rossiya - Russian Airlines 1 2026-04-28
SDM6962 Rossiya - Russian Airlines 1 2026-04-30
SDM6926 Rossiya - Russian Airlines 1 2026-04-29
SDM6925 Rossiya - Russian Airlines 1 2026-04-29
SDM6924 Rossiya - Russian Airlines 1 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 SDM6795 KJA → FRU Jun 2, 15:00 UTCJun 2, 21:30 UTC6h 30m
2026-06-01 SDM6795 KJA → FRU Jun 1, 20:50 UTCJun 2, 20:35 UTC23h 45m
2026-06-01 SDM6722 ALA → KJA Jun 1, 19:35 UTCJun 2, 16:20 UTC20h 45m
2026-06-01 SDM6722 ALA → KJA Jun 1, 16:50 UTCJun 2, 16:20 UTC23h 30m
2026-06-01 SDM6721 KJA → ALA Jun 1, 15:25 UTCJun 1, 21:00 UTC5h 35m
2026-05-31 SDM6726 - May 31, 20:55 UTCJun 1, 20:45 UTC23h 50m
2026-05-31 SDM6725 - May 31, 14:55 UTCMay 31, 22:20 UTC7h 25m
2026-05-30 SDM6725 - May 30, 20:50 UTCMay 31, 16:25 UTC19h 35m
2026-05-30 SDM6722 ALA → KJA May 30, 19:30 UTCMay 31, 16:25 UTC20h 55m
2026-05-30 SDM6722 ALA → KJA May 30, 15:15 UTCMay 30, 21:00 UTC5h 45m
2026-05-30 SDM6722 ALA → KJA May 30, 00:50 UTCMay 30, 21:00 UTC20h 10m
2026-05-29 SDM6726 - May 29, 23:50 UTCMay 30, 21:00 UTC21h 10m
2026-05-29 SDM6726 - May 29, 15:10 UTCMay 30, 01:15 UTC10h 5m
2026-05-28 SDM6725 - May 28, 19:45 UTCMay 29, 15:45 UTC20h 0m
2026-05-28 SDM6621 KJA → PKX May 28, 17:35 UTCMay 28, 17:50 UTC15m
2026-05-26 SDM6725 - May 26, 15:09 UTCMay 26, 22:39 UTC7h 30m
2026-05-25 SDM6725 - May 25, 19:50 UTCMay 26, 16:40 UTC20h 50m
2026-05-25 SDM6621 KJA → PKX May 25, 17:55 UTCMay 25, 18:10 UTC15m
2026-05-24 SDM6725 - May 24, 14:55 UTCMay 24, 21:30 UTC6h 35m
2026-05-23 SDM6722 ALA → KJA May 23, 19:25 UTCMay 24, 16:15 UTC20h 50m
2026-05-23 SDM6721 KJA → ALA May 23, 15:00 UTCMay 23, 20:45 UTC5h 45m
2026-05-21 SDM6622 PKX → KJA May 21, 20:00 UTCMay 21, 20:15 UTC15m
2026-05-21 SDM6621 KJA → PKX May 21, 18:00 UTCMay 21, 18:10 UTC10m
2026-05-18 SDM6784 OSS → KJA May 18, 14:10 UTCMay 18, 21:15 UTC7h 4m
2026-05-17 SDM6783 KJA → OSS May 17, 22:01 UTCMay 18, 20:45 UTC22h 44m
2026-05-17 SDM6725 - May 17, 15:10 UTCMay 18, 14:45 UTC23h 35m
2026-05-17 SDM6986 MRV → KJA May 17, 05:15 UTCMay 17, 22:35 UTC17h 20m
2026-05-17 SDM6986 MRV → KJA May 17, 01:35 UTCMay 17, 22:35 UTC21h 0m
2026-05-16 SDM6722 ALA → KJA May 16, 19:20 UTCMay 17, 16:35 UTC21h 15m
2026-05-16 SDM6721 KJA → ALA May 16, 14:55 UTCMay 17, 12:20 UTC21h 25m
2026-05-15 SDM6721 KJA → ALA May 15, 20:50 UTCMay 16, 20:45 UTC23h 55m
2026-05-15 SDM6721 KJA → ALA May 15, 20:35 UTCMay 16, 16:20 UTC19h 46m
2026-05-15 SDM6783 KJA → OSS May 15, 14:15 UTCMay 15, 21:15 UTC6h 59m
2026-05-13 SDM6845 KJA → OMS May 13, 08:10 UTCMay 13, 22:05 UTC13h 55m
2026-05-13 SDM6881 KJA → IKT May 13, 02:30 UTCMay 13, 02:45 UTC15m
2026-05-12 SDM6795 KJA → FRU May 12, 15:30 UTCMay 12, 21:55 UTC6h 25m
2026-05-11 SDM6795 KJA → FRU May 11, 19:25 UTCMay 12, 16:55 UTC21h 30m
2026-05-11 SDM6721 KJA → ALA May 11, 11:30 UTCMay 11, 20:35 UTC9h 5m
2026-05-09 SDM6472 OMS → LED May 9, 02:40 UTCMay 9, 03:20 UTC40m
2026-05-08 SDM6027 LED → VKO May 8, 14:15 UTCMay 8, 14:50 UTC35m
2026-05-06 SDM6332 KGD → LED May 6, 20:10 UTCMay 6, 21:10 UTC1h 0m
2026-05-06 SDM6331 LED → KGD May 6, 02:01 UTCMay 6, 18:40 UTC16h 39m
2026-05-05 SDM6924 EVN → EVN May 5, 12:10 UTCMay 6, 02:05 UTC13h 55m
2026-05-05 SDM6923 LED → EVN May 5, 10:35 UTCMay 5, 10:45 UTC10m
2026-05-05 SDM6923 LED → EVN May 5, 07:00 UTCMay 5, 07:35 UTC35m
2026-05-04 SDM6572 KJA → LED May 4, 09:10 UTCMay 4, 18:00 UTC8h 50m
2026-05-04 SDM6571 LED → KJA May 4, 08:05 UTCMay 4, 08:20 UTC15m
2026-05-04 SDM6112 NJC → LED May 4, 00:10 UTCMay 4, 05:45 UTC5h 35m
2026-05-03 SDM6332 KGD → LED May 3, 20:30 UTCMay 3, 21:35 UTC1h 5m
2026-05-03 SDM6331 LED → KGD May 3, 17:54 UTCMay 3, 18:45 UTC50m

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-73203 page for operator, model, and routing details .

Mode-S 151DF3 frequently asked

What is Mode-S code 151DF3?
151DF3 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73203.
Where is Mode-S 151DF3 registered?
Mode-S code 151DF3 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DF3 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DF3, octal 05216763, decimal 1,383,923.
What flights does 151DF3 operate?
Mode-S 151DF3 has broadcast 20 distinct callsigns, including SDM6725, SDM6721, SDM6722, SDM6795, SDM6783.