Apparatus

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sensors Mode-S transponder

151DFF

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73215 · AIRBUS A-319

Hex
151DFF
Octal
05216777
Decimal
1,383,935
Country
RU
Tail
RA-73215
Type
A319
Broadcasting now · callsign SDM6961 · 23,400 ft
Flights observed
149
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 17:45 UTC

Current position

151DFF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 151DFF 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
SDM6325 - 9 2026-07-22
SDM6326 - 8 2026-07-22
SDM6454 - 6 2026-07-19
SDM6472 - 5 2026-07-05
SDM6463 Rossiya - Russian Airlines 5 2026-07-23
SDM6924 - 4 2026-07-05
SDM6923 Rossiya - Russian Airlines 4 2026-07-25
SDM6859 - 4 2026-07-23
SDM6572 Rossiya - Russian Airlines 4 2026-07-26
SDM6471 - 4 2026-07-04
SDM6442 - 4 2026-07-01
SDM6315 Rossiya - Russian Airlines 4 2026-07-20
SDM6571 - 3 2026-06-30
SDM6532 Rossiya - Russian Airlines 3 2026-07-18
SDM6418 Rossiya - Russian Airlines 3 2026-06-13
SDM6403 - 3 2026-07-08
SDM6342 - 3 2026-07-13
SDM6331 Rossiya - Russian Airlines 3 2026-07-25
SDM6066 Rossiya - Russian Airlines 3 2026-07-22
SDM6861 - 2 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SDM6572 KJA → LED Jul 26, 00:05 UTCJul 26, 17:45 UTC17h 41m
2026-07-25 SDM6331 LED → KGD Jul 25, 12:10 UTCJul 25, 18:55 UTC6h 45m
2026-07-25 SDM6923 LED → EVN Jul 25, 06:45 UTCJul 25, 10:25 UTC3h 40m
2026-07-24 SDM5992 - Jul 24, 15:40 UTCJul 24, 15:50 UTC10m
2026-07-24 SDM5991 LED → LED Jul 24, 12:15 UTCJul 24, 12:40 UTC25m
2026-07-23 SDM6859 - Jul 23, 18:05 UTCJul 23, 18:50 UTC45m
2026-07-23 SDM6859 - Jul 23, 16:30 UTCJul 23, 16:55 UTC25m
2026-07-23 SDM6463 LED → CEK Jul 23, 05:55 UTCJul 23, 10:55 UTC5h 0m
2026-07-23 SDM6588 SCW → LED Jul 23, 02:30 UTCJul 23, 03:15 UTC45m
2026-07-22 SDM6587 LED → SCW Jul 22, 23:45 UTCJul 23, 00:25 UTC40m
2026-07-22 SDM6326 - Jul 22, 19:05 UTCJul 22, 19:50 UTC45m
2026-07-22 SDM6325 - Jul 22, 15:50 UTCJul 22, 16:55 UTC1h 5m
2026-07-22 SDM6066 MCX → LED Jul 22, 12:30 UTCJul 22, 12:40 UTC10m
2026-07-20 SDM6315 LED → KRR Jul 20, 09:35 UTCJul 20, 09:50 UTC15m
2026-07-19 SDM6859 - Jul 19, 16:35 UTCJul 19, 18:05 UTC1h 30m
2026-07-19 SDM6454 - Jul 19, 02:15 UTCJul 19, 02:30 UTC15m
2026-07-18 SDM6561 LED → AER Jul 18, 10:40 UTCJul 18, 11:00 UTC20m
2026-07-18 SDM6532 ALA → LED Jul 18, 07:10 UTCJul 18, 07:50 UTC40m
2026-07-17 SDM6532 ALA → LED Jul 17, 08:15 UTCJul 17, 08:35 UTC20m
2026-07-16 SDM6990 - Jul 16, 14:29 UTCJul 17, 07:14 UTC16h 45m
2026-07-15 SDM6989 - Jul 15, 22:30 UTCJul 16, 13:15 UTC14h 45m
2026-07-15 SDM6315 - Jul 15, 10:00 UTCJul 15, 23:25 UTC13h 25m
2026-07-14 SDM6859 - Jul 14, 16:40 UTCJul 14, 16:50 UTC10m
2026-07-13 SDM6342 - Jul 13, 07:05 UTCJul 13, 08:01 UTC55m
2026-07-12 SDM6340 - Jul 12, 12:30 UTCJul 12, 23:05 UTC10h 35m
2026-07-11 SDM6931 - Jul 11, 09:30 UTCJul 11, 09:55 UTC25m
2026-07-11 SDM6342 - Jul 11, 07:05 UTCJul 11, 08:01 UTC55m
2026-07-10 SDM6341 - Jul 10, 18:10 UTCJul 11, 04:35 UTC10h 25m
2026-07-10 SDM6961 - Jul 10, 05:45 UTCJul 10, 16:50 UTC11h 5m
2026-07-10 SDM6462 - Jul 10, 04:10 UTCJul 10, 04:25 UTC15m
2026-07-08 SDM6403 - Jul 8, 15:25 UTCJul 8, 15:40 UTC15m
2026-07-08 SDM6464 - Jul 8, 12:10 UTCJul 8, 12:25 UTC15m
2026-07-07 SDM6342 - Jul 7, 06:45 UTCJul 7, 08:05 UTC1h 20m
2026-07-05 SDM6924 - Jul 5, 15:05 UTCJul 5, 15:20 UTC15m
2026-07-05 SDM6924 - Jul 5, 12:05 UTCJul 5, 12:35 UTC30m
2026-07-05 SDM6923 - Jul 5, 06:50 UTCJul 5, 10:35 UTC3h 45m
2026-07-05 SDM6472 - Jul 5, 03:55 UTCJul 5, 04:10 UTC15m
2026-07-04 SDM6471 - Jul 4, 21:10 UTCJul 4, 21:20 UTC10m
2026-07-04 SDM6471 - Jul 4, 20:10 UTCJul 4, 20:20 UTC10m
2026-07-04 SDM6924 - Jul 4, 14:50 UTCJul 4, 15:15 UTC25m
2026-07-04 SDM6923 - Jul 4, 09:50 UTCJul 4, 13:20 UTC3h 30m
2026-07-03 SDM6475 - Jul 3, 22:10 UTCJul 4, 07:00 UTC8h 50m
2026-07-03 SDM6475 - Jul 3, 21:05 UTCJul 3, 21:15 UTC10m
2026-07-03 SDM6330 - Jul 3, 17:50 UTCJul 3, 18:45 UTC55m
2026-07-03 SDM6329 - Jul 3, 14:10 UTCJul 3, 15:30 UTC1h 20m
2026-07-03 SDM6116 VOG → LED Jul 3, 10:55 UTCJul 3, 11:10 UTC15m
2026-07-03 SDM6946 - Jul 3, 04:30 UTCJul 3, 05:05 UTC35m
2026-07-02 SDM6945 - Jul 2, 19:35 UTCJul 2, 19:50 UTC15m
2026-07-01 SDM6442 - Jul 1, 21:20 UTCJul 2, 02:30 UTC5h 10m
2026-07-01 SDM6572 - Jul 1, 16:10 UTCJul 1, 18:05 UTC1h 55m

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-73215 page for operator, model, and routing details .

Mode-S 151DFF frequently asked

What is Mode-S code 151DFF?
151DFF is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73215.
Where is Mode-S 151DFF registered?
Mode-S code 151DFF is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DFF broadcasting right now?
Yes. Mode-S 151DFF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DFF, octal 05216777, decimal 1,383,935.
What flights does 151DFF operate?
Mode-S 151DFF has broadcast 20 distinct callsigns, including SDM6325, SDM6326, SDM6454, SDM6472, SDM6463.