Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 14h ago
Flights observed
192
Distinct callsigns
20
Country
RU
Last broadcast
14h 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
UTA180 UTair Aviation 13 2026-06-05
UTA743 UTair Aviation 12 2026-06-06
UTA744 UTair Aviation 11 2026-06-06
UTA375 UTair Aviation 11 2026-06-09
UTA596 UTair Aviation 10 2026-06-11
UTA595 UTair Aviation 10 2026-06-11
UTA334 UTair Aviation 10 2026-06-10
UTA333 UTair Aviation 9 2026-06-10
UTA376 UTair Aviation 7 2026-06-09
UTA445 - 6 2026-07-12
UTA352 - 6 2026-06-12
UTA179 UTair Aviation 6 2026-06-07
UTA573 UTair Aviation 4 2026-05-28
UTA398 UTair Aviation 4 2026-06-12
UTA397 UTair Aviation 4 2026-06-12
UTA6578 - 3 2026-07-12
UTA6474 - 3 2026-06-19
UTA456 UTair Aviation 3 2026-06-05
UTA454 - 3 2026-06-14
UTA446 - 3 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 UTA186 NUX → UFA Jul 13, 08:30 UTCJul 13, 13:15 UTC4h 45m
2026-07-12 UTA6578 - Jul 12, 16:25 UTCJul 13, 13:15 UTC20h 50m
2026-07-12 UTA445 - Jul 12, 11:35 UTCJul 13, 08:30 UTC20h 55m
2026-07-12 UTA445 - Jul 12, 10:30 UTCJul 12, 10:50 UTC20m
2026-07-11 UTA446 - Jul 11, 15:05 UTCJul 12, 07:05 UTC16h 0m
2026-07-10 UTA415 - Jul 10, 17:55 UTCJul 11, 15:05 UTC21h 10m
2026-07-10 UTA111 - Jul 10, 03:45 UTCJul 10, 03:55 UTC10m
2026-07-08 UTA371 - Jul 8, 20:10 UTCJul 9, 12:00 UTC15h 50m
2026-07-08 UTA371 - Jul 8, 13:45 UTCJul 9, 11:00 UTC21h 15m
2026-07-05 UTA824 - Jul 5, 08:35 UTCJul 5, 15:15 UTC6h 40m
2026-06-20 UTA6432 SGC → VKO Jun 20, 23:34 UTCJun 21, 22:15 UTC22h 40m
2026-06-20 UTA6432 SGC → VKO Jun 20, 23:10 UTCJun 21, 00:34 UTC1h 25m
2026-06-20 UTA6431 VKO → SGC Jun 20, 20:05 UTCJun 20, 21:44 UTC1h 40m
2026-06-19 UTA6430 - Jun 19, 20:29 UTCJun 19, 21:54 UTC1h 25m
2026-06-19 UTA6473 TLK → SGC Jun 19, 06:24 UTCJun 19, 19:04 UTC12h 40m
2026-06-19 UTA6474 - Jun 19, 03:39 UTCJun 19, 04:14 UTC35m
2026-06-18 UTA6474 - Jun 18, 08:55 UTCJun 19, 04:14 UTC19h 19m
2026-06-17 UTA6578 KGP → UFA Jun 17, 16:20 UTCJun 18, 09:00 UTC16h 40m
2026-06-17 UTA445 - Jun 17, 11:00 UTCJun 18, 09:00 UTC22h 0m
2026-06-15 UTA576F - Jun 15, 16:30 UTCJun 15, 19:39 UTC3h 10m
2026-06-14 UTA575 VKO → KRR Jun 14, 11:00 UTCJun 14, 14:15 UTC3h 15m
2026-06-14 UTA575 VKO → KRR Jun 14, 07:30 UTCJun 14, 09:50 UTC2h 20m
2026-06-14 UTA454 - Jun 14, 02:45 UTCJun 14, 04:50 UTC2h 5m
2026-06-13 UTA454 - Jun 13, 07:35 UTCJun 14, 04:50 UTC21h 15m
2026-06-13 UTA454 - Jun 13, 07:20 UTCJun 14, 04:50 UTC21h 30m
2026-06-12 UTA352 - Jun 12, 18:10 UTCJun 13, 05:30 UTC11h 19m
2026-06-12 UTA398 GDZ → VKO Jun 12, 12:50 UTCJun 12, 16:20 UTC3h 30m
2026-06-12 UTA397 VKO → GDZ Jun 12, 08:00 UTCJun 12, 11:05 UTC3h 5m
2026-06-11 UTA352 HMA → VKO Jun 11, 18:10 UTCJun 12, 05:30 UTC11h 20m
2026-06-11 UTA596 USK → VKO Jun 11, 12:10 UTCJun 11, 14:35 UTC2h 25m
2026-06-11 UTA595 VKO → USK Jun 11, 08:35 UTCJun 11, 10:45 UTC2h 10m
2026-06-11 UTA1250 AER → VKO Jun 11, 01:15 UTCJun 11, 04:15 UTC3h 0m
2026-06-10 UTA1249 VKO → AER Jun 10, 20:10 UTCJun 10, 23:15 UTC3h 5m
2026-06-10 UTA18 - Jun 10, 13:25 UTCJun 10, 18:25 UTC5h 0m
2026-06-10 UTA334 NNM → VKO Jun 10, 09:15 UTCJun 10, 11:30 UTC2h 15m
2026-06-10 UTA333 VKO → NNM Jun 10, 05:25 UTCJun 10, 07:35 UTC2h 10m
2026-06-09 UTA376 SCW → VKO Jun 9, 20:55 UTCJun 9, 21:25 UTC30m
2026-06-09 UTA375 VKO → SCW Jun 9, 17:00 UTCJun 9, 19:35 UTC2h 35m
2026-06-08 UTA352 HMA → VKO Jun 8, 18:00 UTCJun 9, 05:45 UTC11h 45m
2026-06-08 UTA596 USK → VKO Jun 8, 12:00 UTCJun 8, 14:20 UTC2h 20m
2026-06-08 UTA595 VKO → USK Jun 8, 08:00 UTCJun 8, 10:15 UTC2h 15m
2026-06-07 UTA179 VKO → UCT Jun 7, 15:15 UTCJun 7, 20:05 UTC4h 50m
2026-06-07 UTA334 NNM → VKO Jun 7, 11:50 UTCJun 7, 13:50 UTC2h 0m
2026-06-07 UTA333 VKO → NNM Jun 7, 08:05 UTCJun 7, 10:15 UTC2h 10m
2026-06-07 UTA764 NAJ → VKO Jun 7, 03:30 UTCJun 7, 06:20 UTC2h 50m
2026-06-07 UTA763 VKO → NAJ Jun 7, 01:20 UTCJun 7, 01:40 UTC20m
2026-06-06 UTA763 VKO → NAJ Jun 6, 14:20 UTCJun 6, 18:14 UTC3h 55m
2026-06-06 UTA744 KVD → VKO Jun 6, 08:05 UTCJun 6, 11:09 UTC3h 5m
2026-06-06 UTA743 VKO → KVD Jun 6, 03:05 UTCJun 6, 05:45 UTC2h 40m
2026-06-05 UTA180 UCT → VKO Jun 5, 18:15 UTCJun 5, 23:45 UTC5h 30m

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 14h 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 UTA180, UTA743, UTA744, UTA375, UTA596.