Apparatus

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sensors Mode-S transponder

151D69

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73065 · BOEING 737-400

Hex
151D69
Octal
05216551
Decimal
1,383,785
Country
RU
Tail
RA-73065
Type
B734
No current signal · last broadcast 4h ago
Flights observed
219
Distinct callsigns
20
Country
RU
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 151D69.

Country allocation

The ICAO 24-bit address 151D69 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
UTA744 - 23 2026-07-16
UTA743 - 22 2026-07-16
UTA398 - 11 2026-07-19
UTA397 UTair Aviation 11 2026-07-19
UTA364 - 11 2026-07-07
UTA376 UTair Aviation 10 2026-07-19
UTA375 - 10 2026-07-19
UTA249 UTair Aviation 8 2026-07-21
UTA399 UTair Aviation 7 2026-07-17
UTA363 - 7 2026-07-03
UTA250 UTair Aviation 7 2026-07-20
UTA6128 - 6 2026-07-04
UTA575 - 4 2026-06-23
UTA456 UTair Aviation 4 2026-06-01
UTA356 - 4 2026-07-17
UTA6110 - 3 2026-07-01
UTA576 - 3 2026-06-23
UTA573 UTair Aviation 3 2026-05-15
UTA559 UTair Aviation 3 2026-07-18
UTA491 - 3 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 UTA249 VKO → AER Jul 21, 10:10 UTCJul 21, 11:20 UTC1h 10m
2026-07-20 UTA250 AER → VKO Jul 20, 13:20 UTCJul 20, 16:50 UTC3h 30m
2026-07-20 UTA249 VKO → AER Jul 20, 08:15 UTCJul 20, 11:35 UTC3h 20m
2026-07-19 UTA376 SCW → VKO Jul 19, 20:55 UTCJul 19, 22:30 UTC1h 35m
2026-07-19 UTA375 - Jul 19, 18:05 UTCJul 19, 19:25 UTC1h 20m
2026-07-19 UTA398 - Jul 19, 12:50 UTCJul 19, 16:10 UTC3h 20m
2026-07-19 UTA397 VKO → GDZ Jul 19, 07:45 UTCJul 19, 11:00 UTC3h 15m
2026-07-18 UTA559 VKO → MCX Jul 18, 21:15 UTCJul 19, 05:30 UTC8h 15m
2026-07-18 UTA374 - Jul 18, 14:30 UTCJul 18, 15:00 UTC30m
2026-07-18 UTA373 VKO → MRV Jul 18, 08:00 UTCJul 18, 09:00 UTC1h 0m
2026-07-17 UTA399 VKO → GRV Jul 17, 17:55 UTCJul 18, 06:10 UTC12h 16m
2026-07-17 UTA398 - Jul 17, 12:50 UTCJul 17, 16:00 UTC3h 10m
2026-07-17 UTA397 - Jul 17, 07:35 UTCJul 17, 10:44 UTC3h 10m
2026-07-17 UTA356 - Jul 17, 05:30 UTCJul 17, 05:50 UTC20m
2026-07-16 UTA355 - Jul 16, 22:40 UTCJul 16, 23:20 UTC40m
2026-07-16 UTA358 - Jul 16, 19:35 UTCJul 16, 20:49 UTC1h 15m
2026-07-16 UTA357 - Jul 16, 17:05 UTCJul 16, 18:10 UTC1h 5m
2026-07-16 UTA744 - Jul 16, 08:15 UTCJul 16, 11:10 UTC2h 55m
2026-07-16 UTA743 - Jul 16, 03:30 UTCJul 16, 06:10 UTC2h 40m
2026-07-15 UTA374 - Jul 15, 14:05 UTCJul 15, 14:55 UTC50m
2026-07-15 UTA373 - Jul 15, 07:25 UTCJul 15, 08:40 UTC1h 15m
2026-07-14 UTA399 VKO → GRV Jul 14, 17:35 UTCJul 15, 05:20 UTC11h 44m
2026-07-14 UTA464 TJM → VKO Jul 14, 13:45 UTCJul 14, 16:00 UTC2h 15m
2026-07-14 UTA463 - Jul 14, 07:40 UTCJul 14, 07:55 UTC15m
2026-07-13 UTA250 - Jul 13, 15:00 UTCJul 13, 18:05 UTC3h 5m
2026-07-13 UTA249 - Jul 13, 08:25 UTCJul 13, 11:50 UTC3h 25m
2026-07-13 UTA356 - Jul 13, 05:05 UTCJul 13, 05:25 UTC20m
2026-07-12 UTA399 VKO → GRV Jul 12, 17:55 UTCJul 12, 18:40 UTC45m
2026-07-12 UTA398 - Jul 12, 13:01 UTCJul 12, 16:15 UTC3h 15m
2026-07-12 UTA397 - Jul 12, 07:45 UTCJul 12, 11:05 UTC3h 20m
2026-07-11 UTA399 VKO → GRV Jul 11, 17:40 UTCJul 12, 05:15 UTC11h 35m
2026-07-11 UTA398 - Jul 11, 15:30 UTCJul 11, 16:00 UTC30m
2026-07-11 UTA397 - Jul 11, 13:10 UTCJul 11, 13:40 UTC30m
2026-07-11 UTA397 - Jul 11, 07:45 UTCJul 11, 11:05 UTC3h 20m
2026-07-10 UTA399 VKO → GRV Jul 10, 17:40 UTCJul 11, 00:35 UTC6h 55m
2026-07-10 UTA398 - Jul 10, 15:45 UTCJul 10, 16:05 UTC20m
2026-07-10 UTA398 - Jul 10, 13:10 UTCJul 10, 13:40 UTC30m
2026-07-10 UTA397 - Jul 10, 07:45 UTCJul 10, 11:35 UTC3h 50m
2026-07-09 UTA559F - Jul 9, 21:15 UTCJul 10, 05:35 UTC8h 20m
2026-07-09 UTA250 - Jul 9, 12:45 UTCJul 9, 15:50 UTC3h 5m
2026-07-09 UTA249 - Jul 9, 07:35 UTCJul 9, 10:40 UTC3h 5m
2026-07-08 UTA358 - Jul 8, 20:20 UTCJul 8, 21:40 UTC1h 20m
2026-07-08 UTA357 - Jul 8, 17:30 UTCJul 8, 18:35 UTC1h 5m
2026-07-07 UTA364 - Jul 7, 18:50 UTCJul 8, 12:00 UTC17h 10m
2026-07-07 UTA493 UFA → GDZ Jul 7, 01:10 UTCJul 7, 12:00 UTC10h 50m
2026-07-06 UTA493 UFA → GDZ Jul 6, 13:25 UTCJul 7, 12:00 UTC22h 35m
2026-07-05 UTA1492 - Jul 5, 18:25 UTCJul 6, 13:30 UTC19h 5m
2026-07-05 UTA491 - Jul 5, 11:55 UTCJul 5, 16:55 UTC5h 0m
2026-07-04 UTA6128 - Jul 4, 16:45 UTCJul 5, 11:55 UTC19h 10m
2026-07-04 UTA6128 - Jul 4, 04:50 UTCJul 4, 16:50 UTC12h 0m

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-73065 page for operator, model, and routing details .

Mode-S 151D69 frequently asked

What is Mode-S code 151D69?
151D69 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73065.
Where is Mode-S 151D69 registered?
Mode-S code 151D69 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D69 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D69, octal 05216551, decimal 1,383,785.
What flights does 151D69 operate?
Mode-S 151D69 has broadcast 20 distinct callsigns, including UTA744, UTA743, UTA398, UTA397, UTA364.