Apparatus

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sensors Mode-S transponder

151D7C

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73084 · BOEING 737-800

Hex
151D7C
Octal
05216574
Decimal
1,383,804
Country
RU
Tail
RA-73084
Type
B738
No current signal · last broadcast 8h ago
Flights observed
155
Distinct callsigns
20
Country
RU
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 151D7C.

Country allocation

The ICAO 24-bit address 151D7C 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
UTA783 - 32 2026-07-12
UTA784 - 26 2026-07-12
UTA810 - 13 2026-06-30
UTA786 - 10 2026-07-02
UTA785 - 8 2026-06-16
UTA295 - 8 2026-07-09
UTA809 - 7 2026-07-02
UTA727 - 6 2026-07-13
UTA728 - 5 2026-07-13
UTA738 UTair Aviation 4 2026-06-29
UTA802 - 3 2026-06-15
UTA801 UTair Aviation 2 2026-06-09
UTA572 - 2 2026-07-09
UTA454 UTair Aviation 2 2026-04-28
UTA453 UTair Aviation 2 2026-05-09
UTA373 UTair Aviation 2 2026-06-04
UTA364 - 2 2026-06-16
UTA248 - 2 2026-06-30
UTA247 - 2 2026-07-14
UTA812 UTair Aviation 1 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UTA247 - Jul 14, 20:25 UTCJul 14, 20:45 UTC20m
2026-07-13 UTA247 - Jul 13, 23:25 UTCJul 14, 20:45 UTC21h 20m
2026-07-13 UTA728 - Jul 13, 08:01 UTCJul 13, 08:30 UTC30m
2026-07-13 UTA727 - Jul 13, 06:05 UTCJul 13, 06:30 UTC25m
2026-07-12 UTA784 - Jul 12, 14:35 UTCJul 12, 16:25 UTC1h 50m
2026-07-12 UTA783 - Jul 12, 12:50 UTCJul 12, 13:01 UTC10m
2026-07-12 UTA783 - Jul 12, 12:30 UTCJul 12, 12:45 UTC15m
2026-07-11 UTA784 - Jul 11, 15:10 UTCJul 12, 12:45 UTC21h 35m
2026-07-11 UTA784 - Jul 11, 14:20 UTCJul 12, 12:45 UTC22h 25m
2026-07-11 UTA783 - Jul 11, 12:10 UTCJul 11, 12:55 UTC45m
2026-07-10 UTA784 - Jul 10, 15:05 UTCJul 11, 12:55 UTC21h 50m
2026-07-10 UTA784 - Jul 10, 14:15 UTCJul 11, 12:55 UTC22h 40m
2026-07-10 UTA783 - Jul 10, 12:15 UTCJul 10, 12:50 UTC35m
2026-07-09 UTA572 - Jul 9, 22:35 UTCJul 10, 11:35 UTC13h 0m
2026-07-09 UTA296 - Jul 9, 16:15 UTCJul 9, 16:25 UTC10m
2026-07-09 UTA295 - Jul 9, 09:35 UTCJul 9, 09:55 UTC20m
2026-07-09 UTA295 SVO → SVO Jul 9, 08:50 UTCJul 9, 09:00 UTC10m
2026-07-08 UTA784 - Jul 8, 15:10 UTCJul 8, 17:00 UTC1h 50m
2026-07-08 UTA783 - Jul 8, 13:00 UTCJul 8, 13:40 UTC40m
2026-07-06 UTA784 - Jul 6, 14:20 UTCJul 7, 03:50 UTC13h 30m
2026-07-06 UTA783 - Jul 6, 10:25 UTCJul 6, 12:40 UTC2h 15m
2026-07-05 UTA783 - Jul 5, 15:05 UTCJul 6, 12:40 UTC21h 35m
2026-07-05 UTA784 - Jul 5, 14:45 UTCJul 6, 11:00 UTC20h 15m
2026-07-05 UTA783 - Jul 5, 10:10 UTCJul 5, 13:10 UTC3h 0m
2026-07-04 UTA783 - Jul 4, 15:10 UTCJul 5, 13:10 UTC22h 0m
2026-07-04 UTA783 - Jul 4, 14:25 UTCJul 5, 13:00 UTC22h 35m
2026-07-04 UTA783 - Jul 4, 10:45 UTCJul 4, 12:40 UTC1h 55m
2026-07-02 UTA786 - Jul 2, 23:05 UTCJul 2, 23:35 UTC30m
2026-07-02 UTA809 - Jul 2, 07:05 UTCJul 2, 07:15 UTC10m
2026-06-30 UTA810 - Jun 30, 15:35 UTCJun 30, 16:00 UTC25m
2026-06-30 UTA248 - Jun 30, 05:15 UTCJun 30, 05:45 UTC30m
2026-06-29 UTA738 AYT → SGC Jun 29, 10:44 UTCJun 30, 03:55 UTC17h 11m
2026-06-29 UTA738 AYT → SGC Jun 29, 07:05 UTCJun 30, 03:55 UTC20h 51m
2026-06-29 UTA738 AYT → SGC Jun 29, 06:50 UTCJun 30, 03:55 UTC21h 6m
2026-06-28 UTA738 AYT → SGC Jun 28, 14:14 UTCJun 29, 11:39 UTC21h 25m
2026-06-28 UTA729 UFA → IST Jun 28, 11:45 UTCJun 28, 12:15 UTC30m
2026-06-26 UTA784 AYT → VKO Jun 26, 16:30 UTCJun 26, 18:20 UTC1h 50m
2026-06-26 UTA783 VKO → AYT Jun 26, 13:10 UTCJun 26, 14:35 UTC1h 25m
2026-06-24 UTA786 - Jun 24, 23:50 UTCJun 25, 00:14 UTC25m
2026-06-24 UTA728 - Jun 24, 08:24 UTCJun 24, 13:00 UTC4h 35m
2026-06-24 UTA727 - Jun 24, 05:59 UTCJun 24, 06:35 UTC35m
2026-06-22 UTA784 AYT → VKO Jun 22, 14:19 UTCJun 22, 16:40 UTC2h 20m
2026-06-22 UTA783 VKO → AYT Jun 22, 12:15 UTCJun 22, 12:54 UTC40m
2026-06-22 UTA783 VKO → AYT Jun 22, 08:15 UTCJun 22, 08:54 UTC40m
2026-06-21 UTA784 AYT → VKO Jun 21, 14:24 UTCJun 21, 16:10 UTC1h 45m
2026-06-20 UTA783 VKO → AYT Jun 20, 21:55 UTCJun 21, 12:49 UTC14h 55m
2026-06-20 UTA783 VKO → AYT Jun 20, 15:04 UTCJun 21, 12:49 UTC21h 45m
2026-06-20 UTA783 VKO → AYT Jun 20, 14:59 UTCJun 21, 12:49 UTC21h 50m
2026-06-19 UTA358 - Jun 19, 20:34 UTCJun 20, 15:09 UTC18h 35m
2026-06-19 UTA357 - Jun 19, 17:14 UTCJun 19, 17:24 UTC10m

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-73084 page for operator, model, and routing details .

Mode-S 151D7C frequently asked

What is Mode-S code 151D7C?
151D7C is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73084.
Where is Mode-S 151D7C registered?
Mode-S code 151D7C is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D7C broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D7C, octal 05216574, decimal 1,383,804.
What flights does 151D7C operate?
Mode-S 151D7C has broadcast 20 distinct callsigns, including UTA783, UTA784, UTA810, UTA786, UTA785.