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sensors Mode-S transponder

151D6A

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73066 · BOEING 737-400

Hex
151D6A
Octal
05216552
Decimal
1,383,786
Country
RU
Tail
RA-73066
Type
B734
No current signal · last broadcast Jul 26, 20:45 UTC
Flights observed
209
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 20:45 UTC

Last known position

Most recent position reported by Mode-S 151D6A.

Country allocation

The ICAO 24-bit address 151D6A 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
UTA103 - 23 2026-06-29
UTA185 UTair Aviation 13 2026-05-22
UTA364 - 10 2026-07-02
UTA6110 - 8 2026-07-24
UTA491 UTair Aviation 7 2026-07-17
UTA186 UTair Aviation 7 2026-06-27
UTA104 UTair Aviation 6 2026-05-15
UTA374 - 5 2026-07-09
UTA249 - 5 2026-07-05
UTA152 - 5 2026-07-13
UTA151 UTair Aviation 5 2026-07-26
UTA6127 UTair Aviation 4 2026-06-01
UTA6109 - 4 2026-07-20
UTA576 - 4 2026-07-06
UTA575 - 4 2026-07-06
UTA493 UTair Aviation 4 2026-07-18
UTA398 - 4 2026-07-07
UTA397 - 4 2026-07-07
UTA295 UTair Aviation 4 2026-06-09
UTA744 UTair Aviation 3 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UTA151 UFA → NJC Jul 26, 16:45 UTCJul 26, 20:45 UTC4h 0m
2026-07-25 UTA6112 NJC → UFA Jul 25, 18:35 UTCJul 26, 16:50 UTC22h 16m
2026-07-24 UTA6112 NJC → UFA Jul 24, 23:55 UTCJul 25, 18:40 UTC18h 45m
2026-07-24 UTA6110 - Jul 24, 14:35 UTCJul 24, 23:55 UTC9h 20m
2026-07-24 UTA6110 - Jul 24, 00:40 UTCJul 24, 23:55 UTC23h 15m
2026-07-23 UTA6114 - Jul 23, 17:55 UTCJul 24, 14:40 UTC20h 45m
2026-07-22 UTA6113 UFA → HMA Jul 22, 21:20 UTCJul 23, 18:00 UTC20h 40m
2026-07-20 UTA6107 - Jul 20, 23:10 UTCJul 21, 14:55 UTC15h 44m
2026-07-20 UTA151 - Jul 20, 16:35 UTCJul 21, 14:55 UTC22h 19m
2026-07-20 UTA151 - Jul 20, 13:55 UTCJul 20, 23:15 UTC9h 20m
2026-07-20 UTA6109 - Jul 20, 00:45 UTCJul 20, 23:15 UTC22h 30m
2026-07-19 UTA494 GDZ → UFA Jul 19, 10:00 UTCJul 20, 00:50 UTC14h 50m
2026-07-18 UTA493 UFA → GDZ Jul 18, 19:20 UTCJul 19, 08:25 UTC13h 5m
2026-07-18 UTA513 - Jul 18, 07:15 UTCJul 18, 17:35 UTC10h 20m
2026-07-17 UTA491 UFA → AER Jul 17, 17:55 UTCJul 18, 05:25 UTC11h 31m
2026-07-16 UTA6114 - Jul 16, 21:25 UTCJul 17, 18:00 UTC20h 35m
2026-07-16 UTA6110 - Jul 16, 14:29 UTCJul 16, 21:25 UTC6h 55m
2026-07-16 UTA6109 - Jul 16, 02:05 UTCJul 16, 21:25 UTC19h 20m
2026-07-13 UTA152 - Jul 13, 21:55 UTCJul 14, 14:40 UTC16h 45m
2026-07-13 UTA152 - Jul 13, 17:55 UTCJul 14, 14:40 UTC20h 45m
2026-07-13 UTA6110 - Jul 13, 15:15 UTCJul 14, 00:40 UTC9h 25m
2026-07-13 UTA6110 - Jul 13, 02:40 UTCJul 14, 00:40 UTC22h 0m
2026-07-12 UTA1492 - Jul 12, 21:45 UTCJul 13, 17:55 UTC20h 10m
2026-07-12 UTA491 - Jul 12, 18:05 UTCJul 12, 18:35 UTC30m
2026-07-12 UTA491 - Jul 12, 08:30 UTCJul 12, 16:25 UTC7h 55m
2026-07-12 UTA493 - Jul 12, 06:10 UTCJul 12, 07:01 UTC50m
2026-07-11 UTA493 - Jul 11, 08:40 UTCJul 12, 07:01 UTC22h 20m
2026-07-09 UTA363 - Jul 9, 18:05 UTCJul 10, 04:40 UTC10h 35m
2026-07-09 UTA374 - Jul 9, 13:55 UTCJul 9, 14:40 UTC45m
2026-07-09 UTA374 - Jul 9, 12:10 UTCJul 9, 12:20 UTC10m
2026-07-09 UTA373 - Jul 9, 07:30 UTCJul 9, 10:20 UTC2h 50m
2026-07-08 UTA399 VKO → GRV Jul 8, 17:55 UTCJul 9, 05:20 UTC11h 25m
2026-07-08 UTA296 - Jul 8, 08:50 UTCJul 8, 16:10 UTC7h 20m
2026-07-07 UTA399 VKO → GRV Jul 7, 21:55 UTCJul 8, 05:40 UTC7h 45m
2026-07-07 UTA398 - Jul 7, 16:45 UTCJul 7, 19:55 UTC3h 10m
2026-07-07 UTA397 - Jul 7, 07:45 UTCJul 7, 15:15 UTC7h 30m
2026-07-06 UTA576 - Jul 6, 15:35 UTCJul 6, 22:40 UTC7h 5m
2026-07-06 UTA575 - Jul 6, 09:55 UTCJul 6, 13:25 UTC3h 30m
2026-07-06 UTA250 - Jul 6, 05:30 UTCJul 6, 08:35 UTC3h 5m
2026-07-05 UTA249 - Jul 5, 23:50 UTCJul 6, 03:35 UTC3h 45m
2026-07-05 UTA250F - Jul 5, 16:20 UTCJul 5, 19:00 UTC2h 40m
2026-07-05 UTA249 - Jul 5, 13:50 UTCJul 5, 14:20 UTC30m
2026-07-04 UTA249 - Jul 4, 18:00 UTCJul 4, 21:45 UTC3h 45m
2026-07-04 UTA398 - Jul 4, 13:20 UTCJul 4, 16:35 UTC3h 15m
2026-07-04 UTA397 - Jul 4, 07:45 UTCJul 4, 11:35 UTC3h 50m
2026-07-03 UTA399 VKO → GRV Jul 3, 17:40 UTCJul 4, 05:20 UTC11h 40m
2026-07-03 UTA398 - Jul 3, 12:45 UTCJul 3, 15:55 UTC3h 10m
2026-07-03 UTA397 - Jul 3, 07:40 UTCJul 3, 11:00 UTC3h 20m
2026-07-02 UTA1250 - Jul 2, 23:05 UTCJul 3, 02:05 UTC3h 0m
2026-07-02 UTA1249 - Jul 2, 18:25 UTCJul 2, 21:25 UTC3h 0m

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-73066 page for operator, model, and routing details .

Mode-S 151D6A frequently asked

What is Mode-S code 151D6A?
151D6A is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73066.
Where is Mode-S 151D6A registered?
Mode-S code 151D6A is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D6A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D6A, octal 05216552, decimal 1,383,786.
What flights does 151D6A operate?
Mode-S 151D6A has broadcast 20 distinct callsigns, including UTA103, UTA185, UTA364, UTA6110, UTA491.