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 Jul 26, 21:15 UTC
Flights observed
214
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 21:15 UTC

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 12 2026-07-20
UTA6108 UTair Aviation 10 2026-07-23
UTA152 - 10 2026-07-14
UTA104 UTair Aviation 10 2026-07-11
UTA6109 - 9 2026-07-22
UTA6110 - 7 2026-07-22
UTA375 UTair Aviation 7 2026-07-26
UTA574 UTair Aviation 6 2026-04-22
UTA573 UTair Aviation 6 2026-04-21
UTA491 UTair Aviation 5 2026-07-24
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
UTA376 UTair Aviation 4 2026-05-27
UTA6128 - 3 2026-07-21
UTA481 UTair Aviation 3 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UTA375 VKO → SCW Jul 26, 20:55 UTCJul 26, 21:15 UTC20m
2026-07-26 UTA250 AER → VKO Jul 26, 15:15 UTCJul 26, 18:55 UTC3h 40m
2026-07-26 UTA249 VKO → AER Jul 26, 09:50 UTCJul 26, 12:55 UTC3h 5m
2026-07-26 UTA364 UFA → VKO Jul 26, 03:25 UTCJul 26, 05:00 UTC1h 35m
2026-07-25 UTA6138 IJK → UFA Jul 25, 20:10 UTCJul 25, 20:20 UTC10m
2026-07-24 UTA492 AER → UFA Jul 24, 18:25 UTCJul 24, 22:55 UTC4h 30m
2026-07-24 UTA491 UFA → AER Jul 24, 04:20 UTCJul 24, 16:40 UTC12h 20m
2026-07-23 UTA6108 IAA → UFA Jul 23, 14:15 UTCJul 24, 04:25 UTC14h 10m
2026-07-23 UTA6108 IAA → UFA Jul 23, 00:40 UTCJul 23, 16:40 UTC16h 0m
2026-07-22 UTA6110 - Jul 22, 14:00 UTCJul 23, 00:40 UTC10h 40m
2026-07-22 UTA6109 - Jul 22, 00:45 UTCJul 22, 14:05 UTC13h 20m
2026-07-21 UTA6128 - Jul 21, 16:30 UTCJul 22, 14:05 UTC21h 35m
2026-07-20 UTA6127 UFA → SGC Jul 20, 23:05 UTCJul 21, 16:35 UTC17h 29m
2026-07-20 UTA186 NUX → UFA Jul 20, 04:15 UTCJul 20, 23:10 UTC18h 55m
2026-07-19 UTA509 TJM → MRV Jul 19, 13:25 UTCJul 19, 16:20 UTC2h 55m
2026-07-18 UTA481 SGC → MRV Jul 18, 16:30 UTCJul 19, 06:20 UTC13h 50m
2026-07-18 UTA6192 NOJ → KUF Jul 18, 07:40 UTCJul 19, 06:20 UTC22h 40m
2026-07-16 UTA6191 KUF → NOJ Jul 16, 13:40 UTCJul 17, 08:20 UTC18h 40m
2026-07-15 UTA6108 IAA → UFA Jul 15, 21:10 UTCJul 16, 13:49 UTC16h 40m
2026-07-15 UTA6108 IAA → UFA Jul 15, 16:50 UTCJul 16, 13:49 UTC21h 0m
2026-07-14 UTA152 - Jul 14, 23:20 UTCJul 15, 21:10 UTC21h 50m
2026-07-14 UTA482 - Jul 14, 07:30 UTCJul 14, 07:40 UTC10m
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

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 Jul 26, 21:15 UTC.
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, UTA6108, UTA152.