sensors Mode-S transponder

151D56

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73046 · BOEING 737-500

Hex
151D56
Octal
05216526
Decimal
1,383,766
Country
RU
Tail
RA-73046
Type
B735
No current signal · last broadcast 10h ago
Flights observed
121
Distinct callsigns
20
Country
RU
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 151D56.

Country allocation

The ICAO 24-bit address 151D56 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
UTA743 UTair Aviation 11 2026-04-30
UTA180 UTair Aviation 11 2026-05-01
UTA744 UTair Aviation 10 2026-04-30
UTA375 UTair Aviation 8 2026-04-30
UTA596 UTair Aviation 6 2026-04-27
UTA595 UTair Aviation 6 2026-04-27
UTA376 UTair Aviation 5 2026-04-30
UTA334 UTair Aviation 5 2026-05-01
UTA179 UTair Aviation 5 2026-04-20
UTA573 UTair Aviation 4 2026-05-28
UTA333 UTair Aviation 4 2026-05-01
UTA445 UTair Aviation 3 2026-05-24
UTA352 UTair Aviation 3 2026-04-23
UTA574 UTair Aviation 2 2026-05-29
UTA456 - 2 2026-04-16
UTA446 UTair Aviation 2 2026-05-24
UTA398 UTair Aviation 2 2026-05-29
UTA397 UTair Aviation 2 2026-05-29
UTA281 UTair Aviation 2 2026-05-17
UTA112 UTair Aviation 2 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 UTA398 GDZ → VKO May 29, 12:45 UTCMay 29, 15:35 UTC2h 50m
2026-05-29 UTA397 VKO → GDZ May 29, 07:55 UTCMay 29, 11:05 UTC3h 10m
2026-05-29 UTA574 MRV → VKO May 29, 05:05 UTCMay 29, 05:40 UTC35m
2026-05-28 UTA573 VKO → MRV May 28, 21:55 UTCMay 29, 01:35 UTC3h 40m
2026-05-28 UTA464 TJM → VKO May 28, 07:15 UTCMay 28, 15:45 UTC8h 30m
2026-05-28 UTA574 MRV → VKO May 28, 02:05 UTCMay 28, 05:05 UTC3h 0m
2026-05-28 UTA573 VKO → MRV May 28, 00:30 UTCMay 28, 00:40 UTC10m
2026-05-27 UTA573 VKO → MRV May 27, 21:55 UTCMay 27, 22:35 UTC40m
2026-05-27 UTA398 GDZ → VKO May 27, 12:55 UTCMay 27, 16:00 UTC3h 5m
2026-05-27 UTA397 VKO → GDZ May 27, 07:50 UTCMay 27, 11:00 UTC3h 10m
2026-05-27 UTA364 UFA → VKO May 27, 03:24 UTCMay 27, 05:04 UTC1h 40m
2026-05-26 UTA6126 NNM → UFA May 26, 15:45 UTCMay 26, 17:35 UTC1h 50m
2026-05-25 UTA6125 UFA → NNM May 25, 23:35 UTCMay 26, 05:15 UTC5h 40m
2026-05-25 UTA112 SVX → SGC May 25, 14:10 UTCMay 25, 14:20 UTC10m
2026-05-25 UTA282 KUF → SVX May 25, 07:40 UTCMay 25, 10:40 UTC3h 0m
2026-05-24 UTA445 VKO → KGP May 24, 10:20 UTCMay 24, 20:30 UTC10h 10m
2026-05-24 UTA446 KGP → VKO May 24, 00:45 UTCMay 24, 07:25 UTC6h 40m
2026-05-22 UTA6580 KGP → KUF May 22, 21:35 UTCMay 23, 17:10 UTC19h 34m
2026-05-22 UTA6430 - May 22, 20:50 UTCMay 23, 17:10 UTC20h 19m
2026-05-22 UTA6473 TLK → SGC May 22, 06:20 UTCMay 22, 19:10 UTC12h 50m
2026-05-22 UTA6474 - May 22, 04:05 UTCMay 22, 04:40 UTC35m
2026-05-21 UTA112 SVX → SGC May 21, 14:05 UTCMay 21, 14:15 UTC10m
2026-05-21 UTA111 SGC → SVX May 21, 03:35 UTCMay 21, 03:45 UTC10m
2026-05-20 UTA823 SGC → GYD May 20, 04:00 UTCMay 20, 20:35 UTC16h 36m
2026-05-19 UTA195 SVX → NUX May 19, 06:05 UTCMay 19, 06:15 UTC10m
2026-05-18 UTA478 KUF → SGC May 18, 18:10 UTCMay 18, 22:35 UTC4h 24m
2026-05-17 UTA184 KZN → SGC May 17, 20:55 UTCMay 18, 19:00 UTC22h 4m
2026-05-17 UTA183 SGC → KZN May 17, 18:35 UTCMay 17, 19:05 UTC30m
2026-05-17 UTA281 SVX → KUF May 17, 06:55 UTCMay 17, 10:35 UTC3h 40m
2026-05-16 UTA281 SVX → KUF May 16, 07:41 UTCMay 16, 10:35 UTC2h 55m
2026-05-15 UTA416 KUF → SGC May 15, 16:45 UTCMay 15, 20:30 UTC3h 45m
2026-05-14 UTA196 NUX → SVX May 14, 11:05 UTCMay 14, 11:15 UTC10m
2026-05-14 UTA111 SGC → SVX May 14, 03:25 UTCMay 14, 03:35 UTC10m
2026-05-13 UTA824 GYD → SGC May 13, 03:55 UTCMay 13, 20:15 UTC16h 20m
2026-05-05 UTA6578 KGP → UFA May 5, 16:20 UTCMay 6, 00:46 UTC8h 25m
2026-05-04 UTA445 VKO → KGP May 4, 12:40 UTCMay 4, 14:10 UTC1h 30m
2026-05-03 UTA445 VKO → KGP May 3, 13:30 UTCMay 4, 07:25 UTC17h 55m
2026-05-03 UTA446 KGP → VKO May 3, 11:35 UTCMay 3, 11:50 UTC15m
2026-05-02 UTA6561 UFA → KGP May 2, 15:45 UTCMay 3, 08:10 UTC16h 24m
2026-05-01 UTA151 UFA → NJC May 1, 21:35 UTCMay 2, 20:10 UTC22h 35m
2026-05-01 UTA1363 VKO → UFA May 1, 20:05 UTCMay 2, 15:50 UTC19h 45m
2026-05-01 UTA180 UCT → VKO May 1, 13:10 UTCMay 1, 18:05 UTC4h 55m
2026-05-01 UTA334 NNM → VKO May 1, 09:25 UTCMay 1, 11:25 UTC2h 0m
2026-05-01 UTA333 VKO → NNM May 1, 05:50 UTCMay 1, 07:55 UTC2h 5m
2026-04-30 UTA376 SCW → VKO Apr 30, 19:05 UTCApr 30, 20:35 UTC1h 30m
2026-04-30 UTA375 VKO → SCW Apr 30, 15:55 UTCApr 30, 17:25 UTC1h 30m
2026-04-30 UTA744 KVD → VKO Apr 30, 08:30 UTCApr 30, 11:15 UTC2h 45m
2026-04-30 UTA743 VKO → KVD Apr 30, 03:15 UTCApr 30, 06:00 UTC2h 45m
2026-04-29 UTA180 UCT → VKO Apr 29, 13:10 UTCApr 29, 18:10 UTC5h 0m
2026-04-29 UTA6315 - Apr 29, 02:55 UTCApr 29, 10:15 UTC7h 21m

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-73046 page for operator, model, and routing details .

Mode-S 151D56 frequently asked

What is Mode-S code 151D56?
151D56 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73046.
Where is Mode-S 151D56 registered?
Mode-S code 151D56 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D56 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 151D56, octal 05216526, decimal 1,383,766.
What flights does 151D56 operate?
Mode-S 151D56 has broadcast 20 distinct callsigns, including UTA743, UTA180, UTA744, UTA375, UTA596.