Apparatus

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sensors Mode-S transponder

151DF1

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73201 · AIRBUS A-319

Hex
151DF1
Octal
05216761
Decimal
1,383,921
Country
RU
Tail
RA-73201
Type
A319
No current signal · last broadcast Jul 25, 17:15 UTC
Flights observed
144
Distinct callsigns
20
Country
RU
Last broadcast
Jul 25, 17:15 UTC

Last known position

Most recent position reported by Mode-S 151DF1.

Country allocation

The ICAO 24-bit address 151DF1 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
SDM6924 - 10 2026-07-07
SDM6572 Rossiya - Russian Airlines 10 2026-07-25
SDM6112 - 9 2026-07-04
SDM6923 - 7 2026-07-07
SDM6926 - 6 2026-07-08
SDM6532 Rossiya - Russian Airlines 6 2026-07-21
SDM6331 - 6 2026-07-13
SDM6962 Rossiya - Russian Airlines 5 2026-07-21
SDM6442 - 5 2026-06-27
SDM6332 - 5 2026-07-13
SDM6961 - 4 2026-07-14
SDM6721 Rossiya - Russian Airlines 4 2026-06-11
SDM6571 Rossiya - Russian Airlines 4 2026-07-19
SDM6570 Rossiya - Russian Airlines 4 2026-05-22
SDM6875 Rossiya - Russian Airlines 3 2026-06-14
SDM6783 Rossiya - Russian Airlines 3 2026-06-05
SDM6621 - 3 2026-06-12
SDM6476 Rossiya - Russian Airlines 3 2026-05-09
SDM6472 Rossiya - Russian Airlines 3 2026-05-22
SDM6403 Rossiya - Russian Airlines 3 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 SDM6572 KJA → LED Jul 25, 13:30 UTCJul 25, 17:15 UTC3h 45m
2026-07-21 SDM6962 AYT → LED Jul 21, 18:35 UTCJul 21, 20:20 UTC1h 45m
2026-07-21 SDM6532 ALA → LED Jul 21, 06:40 UTCJul 21, 17:00 UTC10h 20m
2026-07-20 SDM6572 - Jul 20, 14:15 UTCJul 21, 07:25 UTC17h 9m
2026-07-20 SDM6572 - Jul 20, 11:50 UTCJul 21, 07:25 UTC19h 34m
2026-07-20 SDM6572 - Jul 20, 09:05 UTCJul 21, 07:25 UTC22h 19m
2026-07-20 SDM6572 - Jul 20, 05:05 UTCJul 20, 17:45 UTC12h 40m
2026-07-19 SDM6572 - Jul 19, 20:20 UTCJul 20, 17:45 UTC21h 25m
2026-07-19 SDM6572 - Jul 19, 19:50 UTCJul 20, 17:45 UTC21h 55m
2026-07-19 SDM6571 LED → KJA Jul 19, 17:05 UTCJul 20, 14:20 UTC21h 15m
2026-07-19 SDM6404 SVX → LED Jul 19, 11:30 UTCJul 20, 09:35 UTC22h 5m
2026-07-17 SDM6542 - Jul 17, 09:04 UTCJul 18, 03:05 UTC18h 1m
2026-07-14 SDM6962 - Jul 14, 18:45 UTCJul 14, 20:25 UTC1h 40m
2026-07-14 SDM6961 - Jul 14, 16:45 UTCJul 14, 17:30 UTC45m
2026-07-13 SDM6332 - Jul 13, 20:30 UTCJul 13, 21:20 UTC50m
2026-07-13 SDM6331 - Jul 13, 18:05 UTCJul 13, 18:50 UTC45m
2026-07-13 SDM6336 - Jul 13, 15:05 UTCJul 13, 16:10 UTC1h 5m
2026-07-13 SDM6335 - Jul 13, 12:30 UTCJul 13, 13:30 UTC1h 0m
2026-07-13 SDM6324 - Jul 13, 08:40 UTCJul 13, 10:00 UTC1h 20m
2026-07-12 SDM6988 - Jul 12, 21:30 UTCJul 13, 07:05 UTC9h 35m
2026-07-12 SDM6987 - Jul 12, 19:20 UTCJul 12, 20:01 UTC40m
2026-07-11 SDM6962 - Jul 11, 17:45 UTCJul 11, 19:30 UTC1h 45m
2026-07-11 SDM6961 - Jul 11, 15:40 UTCJul 11, 16:20 UTC40m
2026-07-10 SDM6474 OMS → LED Jul 10, 07:55 UTCJul 10, 13:50 UTC5h 55m
2026-07-08 SDM6926 - Jul 8, 18:10 UTCJul 8, 18:35 UTC25m
2026-07-08 SDM6450 - Jul 8, 09:55 UTCJul 8, 10:05 UTC10m
2026-07-07 SDM6924 - Jul 7, 12:25 UTCJul 7, 12:50 UTC25m
2026-07-07 SDM6923 - Jul 7, 10:45 UTCJul 7, 11:00 UTC15m
2026-07-04 SDM6112 - Jul 4, 13:20 UTCJul 5, 06:40 UTC17h 20m
2026-07-04 SDM6112 - Jul 4, 08:25 UTCJul 5, 06:40 UTC22h 15m
2026-07-02 SDM6332 - Jul 2, 20:15 UTCJul 2, 21:20 UTC1h 5m
2026-07-02 SDM6331 - Jul 2, 18:35 UTCJul 2, 18:55 UTC20m
2026-07-02 SDM6924 - Jul 2, 15:35 UTCJul 2, 15:45 UTC10m
2026-07-02 SDM6924 - Jul 2, 12:10 UTCJul 2, 12:40 UTC30m
2026-07-01 SDM6962 - Jul 1, 11:45 UTCJul 1, 13:40 UTC1h 55m
2026-06-30 SDM6961 - Jun 30, 18:05 UTCJul 1, 09:55 UTC15h 50m
2026-06-28 SDM6962 - Jun 28, 11:59 UTCJun 28, 13:55 UTC1h 55m
2026-06-28 SDM6961 - Jun 28, 01:34 UTCJun 28, 09:55 UTC8h 20m
2026-06-27 SDM6442 - Jun 27, 09:50 UTCJun 28, 08:14 UTC22h 25m
2026-06-26 SDM6946 - Jun 26, 04:24 UTCJun 26, 04:55 UTC30m
2026-06-25 SDM6945 VOG → EVN Jun 25, 19:49 UTCJun 25, 19:59 UTC10m
2026-06-23 SDM6924 - Jun 23, 12:05 UTCJun 23, 13:00 UTC55m
2026-06-23 SDM6442 - Jun 23, 00:54 UTCJun 23, 10:29 UTC9h 35m
2026-06-21 SDM6926 - Jun 21, 18:14 UTCJun 21, 18:39 UTC25m
2026-06-20 SDM6332 - Jun 20, 20:29 UTCJun 20, 21:30 UTC1h 0m
2026-06-20 SDM6331 LED → KGD Jun 20, 12:14 UTCJun 20, 18:29 UTC6h 15m
2026-06-19 SDM6112 - Jun 19, 00:05 UTCJun 19, 05:54 UTC5h 49m
2026-06-17 SDM6572 KJA → LED Jun 17, 13:40 UTCJun 17, 17:15 UTC3h 35m
2026-06-15 SDM6876 AER → KJA Jun 15, 14:24 UTCJun 15, 23:35 UTC9h 10m
2026-06-14 SDM6875 KJA → AER Jun 14, 10:05 UTCJun 14, 10:50 UTC45m

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-73201 page for operator, model, and routing details .

Mode-S 151DF1 frequently asked

What is Mode-S code 151DF1?
151DF1 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73201.
Where is Mode-S 151DF1 registered?
Mode-S code 151DF1 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DF1 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 17:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DF1, octal 05216761, decimal 1,383,921.
What flights does 151DF1 operate?
Mode-S 151DF1 has broadcast 20 distinct callsigns, including SDM6924, SDM6572, SDM6112, SDM6923, SDM6926.