Apparatus

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sensors Mode-S transponder

151DFD

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73213 · AIRBUS A-320

Hex
151DFD
Octal
05216775
Decimal
1,383,933
Country
RU
Tail
RA-73213
Type
A320
No current signal · last broadcast 5h ago
Flights observed
84
Distinct callsigns
20
Country
RU
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 151DFD.

Country allocation

The ICAO 24-bit address 151DFD 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
SDM6574 Rossiya - Russian Airlines 12 2026-05-21
SDM6963 Rossiya - Russian Airlines 9 2026-05-30
SDM6542 Rossiya - Russian Airlines 9 2026-05-30
SDM6353 Rossiya - Russian Airlines 8 2026-05-29
SDM6541 Rossiya - Russian Airlines 7 2026-05-29
SDM6964 Rossiya - Russian Airlines 6 2026-05-30
SDM6923 Rossiya - Russian Airlines 4 2026-05-26
SDM6573 Rossiya - Russian Airlines 4 2026-04-30
SDM6924 Rossiya - Russian Airlines 3 2026-05-26
SDM6559 Rossiya - Russian Airlines 3 2026-05-28
SDM6354 Rossiya - Russian Airlines 3 2026-05-10
SDM6566 Rossiya - Russian Airlines 2 2026-05-24
SDM6565 Rossiya - Russian Airlines 2 2026-05-24
SDM6564 Rossiya - Russian Airlines 2 2026-05-23
SDM6438 Rossiya - Russian Airlines 2 2026-05-29
SDM6437 Rossiya - Russian Airlines 2 2026-05-28
SDM6830 Rossiya - Russian Airlines 1 2026-04-24
SDM6582 Rossiya - Russian Airlines 1 2026-05-03
SDM6560 Rossiya - Russian Airlines 1 2026-05-28
SDM6531 Rossiya - Russian Airlines 1 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 SDM6964 IST → LED May 30, 14:50 UTCMay 30, 15:25 UTC35m
2026-05-30 SDM6963 LED → IST May 30, 12:50 UTCMay 30, 13:05 UTC15m
2026-05-30 SDM6963 LED → IST May 30, 07:35 UTCMay 30, 09:05 UTC1h 30m
2026-05-30 SDM6542 OVB → LED May 30, 00:40 UTCMay 30, 03:50 UTC3h 10m
2026-05-29 SDM6541 LED → OVB May 29, 19:00 UTCMay 29, 19:25 UTC25m
2026-05-29 SDM6353 LED → MRV May 29, 09:15 UTCMay 29, 10:25 UTC1h 10m
2026-05-29 SDM6438 RGK → LED May 29, 06:20 UTCMay 29, 06:50 UTC30m
2026-05-28 SDM6437 LED → RGK May 28, 21:25 UTCMay 28, 21:50 UTC25m
2026-05-28 SDM6560 AER → LED May 28, 18:10 UTCMay 28, 18:20 UTC10m
2026-05-28 SDM6559 LED → AER May 28, 09:15 UTCMay 28, 10:30 UTC1h 15m
2026-05-27 SDM6964 IST → LED May 27, 15:35 UTCMay 27, 16:05 UTC30m
2026-05-27 SDM6963 LED → IST May 27, 13:45 UTCMay 27, 14:10 UTC25m
2026-05-27 SDM6963 LED → IST May 27, 09:10 UTCMay 27, 10:45 UTC1h 35m
2026-05-27 SDM6542 OVB → LED May 27, 00:49 UTCMay 27, 03:39 UTC2h 50m
2026-05-26 SDM6541 LED → OVB May 26, 20:15 UTCMay 26, 22:59 UTC2h 45m
2026-05-26 SDM6541 LED → OVB May 26, 19:25 UTCMay 26, 19:40 UTC15m
2026-05-26 SDM6924 EVN → EVN May 26, 12:40 UTCMay 26, 13:04 UTC25m
2026-05-26 SDM6923 LED → EVN May 26, 10:20 UTCMay 26, 10:50 UTC30m
2026-05-26 SDM6542 OVB → LED May 26, 04:10 UTCMay 26, 04:20 UTC10m
2026-05-26 SDM6542 OVB → LED May 26, 02:49 UTCMay 26, 03:25 UTC35m
2026-05-25 SDM6541 LED → OVB May 25, 20:19 UTCMay 25, 22:44 UTC2h 25m
2026-05-24 SDM6566 AER → LED May 24, 20:00 UTCMay 24, 20:10 UTC10m
2026-05-24 SDM6565 LED → AER May 24, 14:10 UTCMay 24, 14:35 UTC25m
2026-05-24 SDM6531 LED → ALA May 24, 00:40 UTCMay 24, 07:40 UTC7h 0m
2026-05-23 SDM6564 AER → LED May 23, 14:55 UTCMay 23, 15:05 UTC10m
2026-05-21 SDM6574 KJA → LED May 21, 23:10 UTCMay 22, 05:15 UTC6h 5m
2026-05-18 SDM6963 LED → IST May 18, 12:30 UTCMay 18, 12:40 UTC10m
2026-05-17 SDM6438 RGK → LED May 17, 05:35 UTCMay 17, 21:40 UTC16h 5m
2026-05-16 SDM6437 LED → RGK May 16, 22:40 UTCMay 17, 01:15 UTC2h 35m
2026-05-16 SDM6964 IST → LED May 16, 14:31 UTCMay 16, 14:41 UTC10m
2026-05-15 SDM6574 KJA → LED May 15, 20:55 UTCMay 16, 03:10 UTC6h 15m
2026-05-13 SDM6542 OVB → LED May 13, 22:20 UTCMay 14, 10:31 UTC12h 10m
2026-05-12 SDM6964 IST → LED May 12, 14:30 UTCMay 12, 14:45 UTC15m
2026-05-12 SDM6963 LED → IST May 12, 07:15 UTCMay 12, 08:25 UTC1h 10m
2026-05-12 SDM6542 OVB → LED May 12, 02:45 UTCMay 12, 03:30 UTC45m
2026-05-11 SDM6542 OVB → LED May 11, 06:10 UTCMay 12, 03:30 UTC21h 21m
2026-05-10 SDM6354 MRV → LED May 10, 14:34 UTCMay 11, 06:25 UTC15h 50m
2026-05-10 SDM6353 LED → MRV May 10, 09:20 UTCMay 11, 06:25 UTC21h 5m
2026-05-10 SDM6353 LED → MRV May 10, 09:00 UTCMay 11, 06:25 UTC21h 25m
2026-05-09 SDM6964 IST → LED May 9, 09:10 UTCMay 9, 17:49 UTC8h 40m
2026-05-09 SDM6963 LED → IST May 9, 07:20 UTCMay 9, 08:30 UTC1h 10m
2026-05-08 SDM6574 KJA → LED May 8, 18:35 UTCMay 9, 03:15 UTC8h 40m
2026-05-06 SDM6541 LED → OVB May 6, 19:55 UTCMay 7, 03:20 UTC7h 25m
2026-05-06 SDM6541 LED → OVB May 6, 19:00 UTCMay 6, 19:20 UTC20m
2026-05-03 SDM6963 LED → IST May 3, 07:40 UTCMay 3, 08:10 UTC30m
2026-05-03 SDM6582 PEE → LED May 3, 03:50 UTCMay 3, 04:35 UTC45m
2026-05-02 SDM6354 MRV → LED May 2, 13:45 UTCMay 2, 13:55 UTC10m
2026-05-01 SDM6574 KJA → LED May 1, 18:40 UTCMay 2, 03:05 UTC8h 25m
2026-05-01 SDM6574 KJA → LED May 1, 02:20 UTCMay 1, 23:25 UTC21h 5m
2026-04-30 SDM6574 KJA → LED Apr 30, 23:20 UTCMay 1, 21:25 UTC22h 5m

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-73213 page for operator, model, and routing details .

Mode-S 151DFD frequently asked

What is Mode-S code 151DFD?
151DFD is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73213.
Where is Mode-S 151DFD registered?
Mode-S code 151DFD is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DFD broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DFD, octal 05216775, decimal 1,383,933.
What flights does 151DFD operate?
Mode-S 151DFD has broadcast 20 distinct callsigns, including SDM6574, SDM6963, SDM6542, SDM6353, SDM6541.