Apparatus

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sensors Mode-S transponder

151D7F

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73087 · BOEING 737-800

Hex
151D7F
Octal
05216577
Decimal
1,383,807
Country
RU
Tail
RA-73087
Type
B738
No current signal · last broadcast 10h ago
Flights observed
122
Distinct callsigns
20
Country
RU
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 151D7F.

Country allocation

The ICAO 24-bit address 151D7F 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
UTA469 - 30 2026-07-09
UTA806 UTair Aviation 11 2026-05-31
UTA571 - 7 2026-07-13
UTA784 - 6 2026-06-30
UTA248 UTair Aviation 6 2026-05-17
UTA746 UTair Aviation 5 2026-06-09
UTA470 - 5 2026-07-09
UTA785 - 4 2026-07-10
UTA783 - 4 2026-06-30
UTA731 - 4 2026-07-07
UTA728 UTair Aviation 4 2026-05-28
UTA572 - 4 2026-07-14
UTA881 - 3 2026-07-09
UTA786 - 3 2026-07-11
UTA810 - 2 2026-06-13
UTA745 UTair Aviation 2 2026-06-09
UTA737 - 2 2026-07-05
UTA732 UTair Aviation 2 2026-07-07
UTA727 UTair Aviation 2 2026-06-03
UTA291 UTair Aviation 2 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 UTA357 - Jul 17, 18:00 UTCJul 17, 18:10 UTC10m
2026-07-14 UTA572 - Jul 14, 00:50 UTCJul 14, 01:25 UTC35m
2026-07-13 UTA571 - Jul 13, 22:10 UTCJul 13, 22:40 UTC30m
2026-07-13 UTA571 - Jul 13, 01:50 UTCJul 13, 22:40 UTC20h 50m
2026-07-13 UTA572 - Jul 13, 01:20 UTCJul 13, 22:40 UTC21h 20m
2026-07-11 UTA571 - Jul 11, 22:05 UTCJul 12, 01:25 UTC3h 20m
2026-07-11 UTA571 - Jul 11, 19:00 UTCJul 11, 19:10 UTC10m
2026-07-11 UTA786 - Jul 11, 00:10 UTCJul 11, 00:40 UTC30m
2026-07-10 UTA785 - Jul 10, 21:50 UTCJul 10, 22:00 UTC10m
2026-07-09 UTA470 - Jul 9, 21:40 UTCJul 9, 22:15 UTC35m
2026-07-09 UTA881 - Jul 9, 08:20 UTCJul 9, 08:35 UTC15m
2026-07-09 UTA469 - Jul 9, 03:45 UTCJul 9, 05:15 UTC1h 30m
2026-07-08 UTA469 - Jul 8, 03:50 UTCJul 9, 03:45 UTC23h 55m
2026-07-08 UTA469 - Jul 8, 03:40 UTCJul 8, 05:00 UTC1h 20m
2026-07-07 UTA732 GYD → LED Jul 7, 17:10 UTCJul 7, 17:20 UTC10m
2026-07-07 UTA731 - Jul 7, 08:20 UTCJul 7, 08:35 UTC15m
2026-07-06 UTA738 - Jul 6, 10:00 UTCJul 7, 05:25 UTC19h 25m
2026-07-05 UTA737 - Jul 5, 23:10 UTCJul 6, 08:15 UTC9h 5m
2026-07-05 UTA737 - Jul 5, 09:50 UTCJul 6, 08:15 UTC22h 25m
2026-07-04 UTA469 - Jul 4, 14:05 UTCJul 5, 08:10 UTC18h 5m
2026-07-04 UTA469 - Jul 4, 12:05 UTCJul 4, 12:20 UTC15m
2026-07-04 UTA469 - Jul 4, 09:55 UTCJul 4, 11:30 UTC1h 35m
2026-07-02 UTA572 - Jul 2, 00:50 UTCJul 2, 01:30 UTC40m
2026-06-30 UTA784 - Jun 30, 14:30 UTCJun 30, 16:25 UTC1h 55m
2026-06-30 UTA783 - Jun 30, 12:40 UTCJun 30, 13:00 UTC20m
2026-06-29 UTA784 - Jun 29, 14:09 UTCJun 29, 16:00 UTC1h 50m
2026-06-28 UTA783 - Jun 28, 23:09 UTCJun 29, 12:20 UTC13h 10m
2026-06-28 UTA785 - Jun 28, 20:45 UTCJun 28, 20:59 UTC15m
2026-06-26 UTA469 - Jun 26, 03:34 UTCJun 26, 04:55 UTC1h 20m
2026-06-25 UTA469 - Jun 25, 03:50 UTCJun 26, 03:45 UTC23h 55m
2026-06-24 UTA469 - Jun 24, 10:55 UTCJun 25, 04:54 UTC18h 0m
2026-06-24 UTA469 - Jun 24, 03:50 UTCJun 25, 03:44 UTC23h 55m
2026-06-24 UTA469 - Jun 24, 03:40 UTCJun 24, 22:10 UTC18h 30m
2026-06-23 UTA469 - Jun 23, 21:39 UTCJun 24, 14:50 UTC17h 10m
2026-06-23 UTA469 - Jun 23, 13:55 UTCJun 24, 11:24 UTC21h 30m
2026-06-23 UTA469 - Jun 23, 08:00 UTCJun 24, 04:59 UTC21h 0m
2026-06-22 UTA469 - Jun 22, 21:49 UTCJun 23, 05:04 UTC7h 15m
2026-06-22 UTA881 LED → SKD Jun 22, 08:25 UTCJun 22, 08:44 UTC20m
2026-06-22 UTA469 - Jun 22, 03:35 UTCJun 22, 05:04 UTC1h 30m
2026-06-20 UTA785 - Jun 20, 23:19 UTCJun 20, 23:45 UTC25m
2026-06-19 UTA784 AYT → VKO Jun 19, 22:39 UTCJun 20, 00:24 UTC1h 45m
2026-06-19 UTA783 VKO → AYT Jun 19, 20:34 UTCJun 19, 21:14 UTC40m
2026-06-18 UTA876 EVN → TJM Jun 18, 13:30 UTCJun 18, 14:01 UTC30m
2026-06-18 UTA711 SGC → EVN Jun 18, 09:05 UTCJun 18, 11:50 UTC2h 45m
2026-06-16 UTA812 AYT → TJM Jun 16, 10:35 UTCJun 16, 12:30 UTC1h 55m
2026-06-15 UTA296 SGC → VKO Jun 15, 14:50 UTCJun 16, 08:44 UTC17h 55m
2026-06-13 UTA810 - Jun 13, 16:50 UTCJun 14, 12:25 UTC19h 36m
2026-06-12 UTA802 - Jun 12, 19:35 UTCJun 12, 20:55 UTC1h 20m
2026-06-12 UTA790 FEG → VKO Jun 12, 06:20 UTCJun 12, 18:55 UTC12h 35m
2026-06-11 UTA784 AYT → VKO Jun 11, 15:55 UTCJun 12, 10:40 UTC18h 45m

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-73087 page for operator, model, and routing details .

Mode-S 151D7F frequently asked

What is Mode-S code 151D7F?
151D7F is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73087.
Where is Mode-S 151D7F registered?
Mode-S code 151D7F is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D7F broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D7F, octal 05216577, decimal 1,383,807.
What flights does 151D7F operate?
Mode-S 151D7F has broadcast 20 distinct callsigns, including UTA469, UTA806, UTA571, UTA784, UTA248.