Apparatus

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sensors Mode-S transponder

151D6B

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73067 · BOEING 737-400

Hex
151D6B
Octal
05216553
Decimal
1,383,787
Country
RU
Tail
RA-73067
Type
B734
No current signal · last broadcast 9h ago
Flights observed
107
Distinct callsigns
20
Country
RU
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 151D6B.

Country allocation

The ICAO 24-bit address 151D6B 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 - 10 2026-07-16
UTA576 - 8 2026-07-11
UTA575 - 8 2026-07-11
UTA491 - 8 2026-07-04
UTA186 UTair Aviation 7 2026-07-14
UTA248 UTair Aviation 6 2026-06-12
UTA185 - 6 2026-07-14
UTA398 - 4 2026-07-09
UTA374 - 4 2026-06-25
UTA6128 - 3 2026-07-07
UTA6114 - 3 2026-07-13
UTA6110 - 3 2026-06-19
UTA492 UTair Aviation 3 2026-06-28
UTA475 UTair Aviation 3 2026-07-05
UTA397 - 3 2026-07-09
UTA373 - 3 2026-06-25
UTA363 - 3 2026-07-11
UTA514 - 2 2026-07-04
UTA364 - 2 2026-07-08
UTA249 UTair Aviation 2 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 UTA103 - Jul 16, 04:30 UTCJul 16, 16:19 UTC11h 50m
2026-07-15 UTA103 - Jul 15, 13:10 UTCJul 16, 04:35 UTC15h 25m
2026-07-15 UTA103 - Jul 15, 04:25 UTCJul 15, 16:25 UTC12h 0m
2026-07-14 UTA104 - Jul 14, 17:20 UTCJul 15, 16:25 UTC23h 4m
2026-07-14 UTA186 NUX → UFA Jul 14, 14:50 UTCJul 15, 13:10 UTC22h 19m
2026-07-14 UTA185 - Jul 14, 10:05 UTCJul 15, 04:30 UTC18h 24m
2026-07-14 UTA103 - Jul 14, 07:20 UTCJul 15, 04:30 UTC21h 9m
2026-07-13 UTA103 - Jul 13, 23:05 UTCJul 14, 17:25 UTC18h 20m
2026-07-13 UTA6114 - Jul 13, 17:40 UTCJul 14, 14:55 UTC21h 15m
2026-07-12 UTA6114 - Jul 12, 21:40 UTCJul 13, 17:45 UTC20h 5m
2026-07-12 UTA185 - Jul 12, 08:25 UTCJul 12, 21:40 UTC13h 15m
2026-07-11 UTA363 - Jul 11, 21:35 UTCJul 12, 13:15 UTC15h 40m
2026-07-11 UTA576 - Jul 11, 17:10 UTCJul 11, 19:55 UTC2h 45m
2026-07-11 UTA575 - Jul 11, 11:20 UTCJul 11, 15:15 UTC3h 55m
2026-07-11 UTA576 - Jul 11, 06:35 UTCJul 11, 09:15 UTC2h 40m
2026-07-10 UTA575 - Jul 10, 14:15 UTCJul 10, 19:45 UTC5h 30m
2026-07-10 UTA575 - Jul 10, 08:25 UTCJul 10, 11:55 UTC3h 30m
2026-07-09 UTA356 - Jul 9, 17:50 UTCJul 10, 05:10 UTC11h 20m
2026-07-09 UTA398 - Jul 9, 15:25 UTCJul 9, 16:05 UTC40m
2026-07-09 UTA398 - Jul 9, 13:00 UTCJul 9, 13:25 UTC25m
2026-07-09 UTA397 - Jul 9, 07:55 UTCJul 9, 11:10 UTC3h 15m
2026-07-08 UTA364 - Jul 8, 14:05 UTCJul 9, 05:05 UTC15h 0m
2026-07-07 UTA6128 - Jul 7, 16:40 UTCJul 8, 14:05 UTC21h 25m
2026-07-06 UTA6128 - Jul 6, 23:20 UTCJul 7, 16:45 UTC17h 25m
2026-07-06 UTA476 KRR → UFA Jul 6, 16:20 UTCJul 6, 23:25 UTC7h 5m
2026-07-05 UTA475 UFA → KRR Jul 5, 19:55 UTCJul 6, 14:30 UTC18h 35m
2026-07-05 UTA475 UFA → KRR Jul 5, 15:25 UTCJul 6, 14:30 UTC23h 5m
2026-07-04 UTA514 - Jul 4, 08:40 UTCJul 4, 18:20 UTC9h 40m
2026-07-04 UTA491 - Jul 4, 06:20 UTCJul 4, 06:55 UTC35m
2026-07-03 UTA491 - Jul 3, 12:40 UTCJul 4, 06:55 UTC18h 15m
2026-07-01 UTA185 - Jul 1, 10:50 UTCJul 1, 15:30 UTC4h 40m
2026-06-30 UTA1492 - Jun 30, 00:35 UTCJun 30, 01:04 UTC30m
2026-06-29 UTA491 UFA → AER Jun 29, 13:09 UTCJun 29, 22:39 UTC9h 30m
2026-06-28 UTA475 UFA → KRR Jun 28, 20:19 UTCJun 29, 11:14 UTC14h 55m
2026-06-28 UTA492 AER → UFA Jun 28, 11:19 UTCJun 28, 18:25 UTC7h 5m
2026-06-28 UTA513 TJM → AER Jun 28, 08:39 UTCJun 28, 09:10 UTC30m
2026-06-27 UTA514 AER → TJM Jun 27, 11:35 UTCJun 28, 09:10 UTC21h 35m
2026-06-26 UTA491 UFA → AER Jun 26, 16:54 UTCJun 27, 09:15 UTC16h 20m
2026-06-25 UTA6128 SGC → UFA Jun 25, 22:49 UTCJun 26, 16:54 UTC18h 5m
2026-06-25 UTA363 VKO → UFA Jun 25, 18:15 UTCJun 25, 22:54 UTC4h 40m
2026-06-25 UTA374 - Jun 25, 14:20 UTCJun 25, 14:55 UTC35m
2026-06-25 UTA374 - Jun 25, 12:10 UTCJun 25, 12:19 UTC10m
2026-06-25 UTA373 - Jun 25, 10:04 UTCJun 25, 10:15 UTC10m
2026-06-25 UTA373 - Jun 25, 07:34 UTCJun 25, 07:54 UTC20m
2026-06-24 UTA399 VKO → GRV Jun 24, 18:55 UTCJun 25, 05:29 UTC10h 35m
2026-06-24 UTA576 - Jun 24, 12:40 UTCJun 24, 16:19 UTC3h 40m
2026-06-24 UTA575 - Jun 24, 07:15 UTCJun 24, 10:19 UTC3h 5m
2026-06-24 UTA364 - Jun 24, 04:44 UTCJun 24, 05:05 UTC20m
2026-06-23 UTA492 AER → UFA Jun 23, 18:14 UTCJun 23, 19:44 UTC1h 30m
2026-06-23 UTA491 UFA → AER Jun 23, 06:39 UTCJun 23, 16:24 UTC9h 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-73067 page for operator, model, and routing details .

Mode-S 151D6B frequently asked

What is Mode-S code 151D6B?
151D6B is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73067.
Where is Mode-S 151D6B registered?
Mode-S code 151D6B is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D6B broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D6B, octal 05216553, decimal 1,383,787.
What flights does 151D6B operate?
Mode-S 151D6B has broadcast 20 distinct callsigns, including UTA103, UTA576, UTA575, UTA491, UTA186.