Apparatus

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sensors Mode-S transponder

151D6D

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73069 · BOEING 737-400

Hex
151D6D
Octal
05216555
Decimal
1,383,789
Country
RU
Tail
RA-73069
Type
B734
No current signal · last broadcast 27m ago
Flights observed
192
Distinct callsigns
20
Country
RU
Last broadcast
27m ago

Last known position

Most recent position reported by Mode-S 151D6D.

Country allocation

The ICAO 24-bit address 151D6D 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 - 23 2026-07-13
UTA185 - 14 2026-07-09
UTA186 UTair Aviation 11 2026-07-04
UTA104 UTair Aviation 10 2026-07-11
UTA152 UTair Aviation 9 2026-06-14
UTA6109 UTair Aviation 8 2026-05-29
UTA6110 - 6 2026-06-15
UTA6108 UTair Aviation 6 2026-06-27
UTA574 UTair Aviation 6 2026-04-22
UTA573 UTair Aviation 6 2026-04-21
UTA375 UTair Aviation 6 2026-05-27
UTA398 - 5 2026-04-19
UTA397 UTair Aviation 5 2026-04-22
UTA6107 UTair Aviation 4 2026-06-15
UTA576 - 4 2026-04-16
UTA575 UTair Aviation 4 2026-04-16
UTA491 - 4 2026-07-06
UTA376 UTair Aviation 4 2026-05-27
UTA363 UTair Aviation 3 2026-06-12
UTA151 UTair Aviation 3 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 UTA103 - Jul 13, 04:35 UTCJul 14, 03:10 UTC22h 35m
2026-07-12 UTA103 - Jul 12, 20:25 UTCJul 13, 04:35 UTC8h 10m
2026-07-12 UTA509 TJM → MRV Jul 12, 15:55 UTCJul 12, 16:20 UTC25m
2026-07-12 UTA510 - Jul 12, 07:40 UTCJul 12, 07:50 UTC10m
2026-07-11 UTA104 UFA → SGC Jul 11, 08:40 UTCJul 12, 03:15 UTC18h 35m
2026-07-11 UTA103 - Jul 11, 04:20 UTCJul 12, 03:15 UTC22h 55m
2026-07-10 UTA103 - Jul 10, 13:20 UTCJul 11, 08:40 UTC19h 20m
2026-07-10 UTA103 - Jul 10, 08:30 UTCJul 11, 04:25 UTC19h 55m
2026-07-10 UTA103 - Jul 10, 04:35 UTCJul 10, 16:20 UTC11h 45m
2026-07-09 UTA104 UFA → SGC Jul 9, 16:20 UTCJul 10, 13:20 UTC21h 0m
2026-07-09 UTA104 UFA → SGC Jul 9, 13:15 UTCJul 10, 08:30 UTC19h 15m
2026-07-09 UTA185 - Jul 9, 08:20 UTCJul 10, 04:35 UTC20h 15m
2026-07-08 UTA185 - Jul 8, 23:50 UTCJul 9, 16:25 UTC16h 35m
2026-07-08 UTA477 - Jul 8, 20:15 UTCJul 9, 16:25 UTC20h 10m
2026-07-08 UTA104 UFA → SGC Jul 8, 16:35 UTCJul 9, 13:15 UTC20h 40m
2026-07-08 UTA6184 NOJ → UFA Jul 8, 11:55 UTCJul 9, 08:25 UTC20h 30m
2026-07-06 UTA1492 - Jul 6, 23:30 UTCJul 7, 04:30 UTC5h 0m
2026-07-06 UTA491 - Jul 6, 20:25 UTCJul 6, 20:50 UTC25m
2026-07-06 UTA491 - Jul 6, 11:55 UTCJul 6, 18:50 UTC6h 55m
2026-07-05 UTA482 - Jul 5, 17:25 UTCJul 5, 17:35 UTC10m
2026-07-05 UTA481 - Jul 5, 05:45 UTCJul 5, 05:55 UTC10m
2026-07-04 UTA186 NUX → UFA Jul 4, 04:35 UTCJul 4, 16:35 UTC12h 0m
2026-07-03 UTA186 NUX → UFA Jul 3, 16:20 UTCJul 4, 13:50 UTC21h 30m
2026-07-03 UTA186 NUX → UFA Jul 3, 13:05 UTCJul 4, 09:15 UTC20h 10m
2026-07-03 UTA186 NUX → UFA Jul 3, 08:20 UTCJul 4, 04:40 UTC20h 20m
2026-07-03 UTA186 NUX → UFA Jul 3, 04:20 UTCJul 3, 16:25 UTC12h 5m
2026-07-02 UTA186 NUX → UFA Jul 2, 16:20 UTCJul 3, 13:15 UTC20h 55m
2026-07-02 UTA186 NUX → UFA Jul 2, 13:20 UTCJul 3, 13:15 UTC23h 55m
2026-07-02 UTA104 UFA → SGC Jul 2, 08:35 UTCJul 3, 04:25 UTC19h 50m
2026-07-01 UTA104 UFA → SGC Jul 1, 17:20 UTCJul 2, 16:25 UTC23h 5m
2026-07-01 - - Jul 1, 16:55 UTCJul 2, 13:20 UTC20h 25m
2026-07-01 UTA103 - Jul 1, 04:15 UTCJul 1, 15:10 UTC10h 55m
2026-06-30 UTA103 - Jun 30, 16:45 UTCJul 1, 15:10 UTC22h 25m
2026-06-30 UTA186 NUX → UFA Jun 30, 13:55 UTCJul 1, 04:20 UTC14h 25m
2026-06-30 UTA185 - Jun 30, 08:25 UTCJul 1, 04:20 UTC19h 55m
2026-06-29 UTA185 - Jun 29, 23:54 UTCJun 30, 16:45 UTC16h 50m
2026-06-29 UTA185 - Jun 29, 12:20 UTCJun 30, 08:30 UTC20h 11m
2026-06-28 6118 - Jun 28, 15:05 UTCJun 29, 12:20 UTC21h 15m
2026-06-28 6118 - Jun 28, 00:39 UTCJun 28, 15:09 UTC14h 30m
2026-06-27 UTA6108 IAA → UFA Jun 27, 15:10 UTCJun 28, 00:45 UTC9h 35m
2026-06-26 UTA6108 IAA → UFA Jun 26, 23:44 UTCJun 27, 15:14 UTC15h 30m
2026-06-26 UTA1492 - Jun 26, 18:15 UTCJun 27, 15:14 UTC21h 0m
2026-06-26 UTA514 AER → TJM Jun 26, 07:39 UTCJun 26, 16:24 UTC8h 45m
2026-06-26 UTA491 UFA → AER Jun 26, 05:24 UTCJun 26, 05:55 UTC30m
2026-06-24 UTA492 AER → UFA Jun 24, 12:20 UTCJun 24, 13:50 UTC1h 30m
2026-06-23 UTA491 UFA → AER Jun 23, 14:29 UTCJun 24, 10:35 UTC20h 5m
2026-06-23 UTA6108 IAA → UFA Jun 23, 00:45 UTCJun 23, 14:35 UTC13h 50m
2026-06-22 UTA476 KRR → UFA Jun 22, 13:29 UTCJun 23, 00:45 UTC11h 15m
2026-06-21 UTA475 UFA → KRR Jun 21, 21:14 UTCJun 22, 11:14 UTC14h 0m
2026-06-21 UTA510 MRV → TJM Jun 21, 08:15 UTCJun 21, 08:25 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-73069 page for operator, model, and routing details .

Mode-S 151D6D frequently asked

What is Mode-S code 151D6D?
151D6D is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73069.
Where is Mode-S 151D6D registered?
Mode-S code 151D6D is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D6D broadcasting right now?
No active broadcast right now. Last signal was 27m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D6D, octal 05216555, decimal 1,383,789.
What flights does 151D6D operate?
Mode-S 151D6D has broadcast 20 distinct callsigns, including UTA103, UTA185, UTA186, UTA104, UTA152.