Apparatus

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sensors Mode-S transponder

151D6C

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73068 · BOEING 737-400

Hex
151D6C
Octal
05216554
Decimal
1,383,788
Country
RU
Tail
RA-73068
Type
B734
No current signal · last broadcast 24d ago
Flights observed
192
Distinct callsigns
20
Country
RU
Last broadcast
24d ago

Last known position

Most recent position reported by Mode-S 151D6C.

Country allocation

The ICAO 24-bit address 151D6C 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
UTA576 - 17 2026-07-25
UTA575 UTair Aviation 14 2026-07-25
UTA398 - 13 2026-07-24
UTA397 UTair Aviation 13 2026-07-24
UTA250 UTair Aviation 9 2026-07-22
UTA399 UTair Aviation 8 2026-07-19
UTA185 - 7 2026-07-08
UTA363 UTair Aviation 6 2026-07-25
UTA356 UTair Aviation 6 2026-07-20
UTA249 - 6 2026-07-19
UTA744 UTair Aviation 4 2026-06-16
UTA743 - 4 2026-06-16
UTA492 UTair Aviation 4 2026-06-10
UTA491 UTair Aviation 4 2026-06-10
UTA400 UTair Aviation 4 2026-07-22
UTA375 UTair Aviation 4 2026-06-16
UTA373 - 4 2026-07-02
UTA364 UTair Aviation 4 2026-07-19
UTA6108 UTair Aviation 3 2026-07-10
UTA374 - 3 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 UTA363 VKO → UFA Jul 25, 18:00 UTCJul 25, 19:25 UTC1h 25m
2026-07-25 UTA576 - Jul 25, 12:50 UTCJul 25, 15:45 UTC2h 55m
2026-07-25 UTA575 VKO → KRR Jul 25, 07:45 UTCJul 25, 10:55 UTC3h 10m
2026-07-24 UTA355 VKO → GRV Jul 24, 22:35 UTCJul 25, 05:55 UTC7h 20m
2026-07-24 UTA398 - Jul 24, 13:10 UTCJul 24, 16:10 UTC3h 0m
2026-07-24 UTA397 VKO → GDZ Jul 24, 07:45 UTCJul 24, 11:30 UTC3h 45m
2026-07-23 UTA398 - Jul 23, 19:25 UTCJul 23, 20:00 UTC35m
2026-07-23 UTA398 - Jul 23, 16:50 UTCJul 23, 18:45 UTC1h 55m
2026-07-23 UTA397 VKO → GDZ Jul 23, 12:55 UTCJul 23, 15:30 UTC2h 35m
2026-07-23 UTA397 VKO → GDZ Jul 23, 08:55 UTCJul 23, 09:20 UTC25m
2026-07-22 UTA400 GRV → VKO Jul 22, 18:35 UTCJul 23, 06:35 UTC12h 0m
2026-07-22 UTA250 AER → VKO Jul 22, 15:25 UTCJul 22, 15:40 UTC15m
2026-07-22 UTA250 AER → VKO Jul 22, 12:50 UTCJul 22, 13:15 UTC25m
2026-07-21 UTA363 VKO → UFA Jul 21, 17:55 UTCJul 22, 04:55 UTC11h 0m
2026-07-21 UTA576 - Jul 21, 16:00 UTCJul 21, 16:20 UTC20m
2026-07-21 UTA576 - Jul 21, 13:25 UTCJul 21, 13:50 UTC25m
2026-07-21 UTA575 VKO → KRR Jul 21, 07:45 UTCJul 21, 10:45 UTC3h 0m
2026-07-21 UTA248 SGC → VKO Jul 21, 04:50 UTCJul 21, 05:40 UTC50m
2026-07-20 UTA247 - Jul 20, 18:15 UTCJul 21, 04:15 UTC9h 59m
2026-07-20 UTA398 - Jul 20, 15:55 UTCJul 20, 16:35 UTC40m
2026-07-20 UTA398 - Jul 20, 13:05 UTCJul 20, 15:20 UTC2h 15m
2026-07-20 UTA397 VKO → GDZ Jul 20, 08:00 UTCJul 20, 11:30 UTC3h 30m
2026-07-20 UTA356 GRV → VKO Jul 20, 05:45 UTCJul 20, 06:05 UTC20m
2026-07-19 UTA399 VKO → GRV Jul 19, 17:40 UTCJul 20, 04:45 UTC11h 5m
2026-07-19 UTA250 AER → VKO Jul 19, 12:50 UTCJul 19, 16:05 UTC3h 15m
2026-07-19 UTA249 - Jul 19, 07:25 UTCJul 19, 10:35 UTC3h 10m
2026-07-19 UTA364 UFA → VKO Jul 19, 03:35 UTCJul 19, 05:00 UTC1h 25m
2026-07-17 UTA363 - Jul 17, 18:15 UTCJul 18, 04:40 UTC10h 26m
2026-07-17 UTA576 - Jul 17, 15:15 UTCJul 17, 15:55 UTC40m
2026-07-17 UTA576 - Jul 17, 12:40 UTCJul 17, 14:35 UTC1h 55m
2026-07-17 UTA575 VKO → KRR Jul 17, 07:05 UTCJul 17, 09:55 UTC2h 50m
2026-07-16 UTA576 - Jul 16, 13:20 UTCJul 16, 16:15 UTC2h 55m
2026-07-16 UTA575 - Jul 16, 07:10 UTCJul 16, 10:55 UTC3h 45m
2026-07-15 UTA1363 - Jul 15, 18:30 UTCJul 16, 05:05 UTC10h 35m
2026-07-15 UTA250 - Jul 15, 15:30 UTCJul 15, 15:55 UTC25m
2026-07-15 UTA250 - Jul 15, 13:00 UTCJul 15, 13:30 UTC30m
2026-07-15 UTA249 - Jul 15, 07:30 UTCJul 15, 11:15 UTC3h 45m
2026-07-14 UTA398 - Jul 14, 12:55 UTCJul 14, 16:15 UTC3h 20m
2026-07-14 UTA397 - Jul 14, 07:45 UTCJul 14, 11:00 UTC3h 15m
2026-07-13 UTA398 - Jul 13, 19:25 UTCJul 13, 19:40 UTC15m
2026-07-13 UTA398 - Jul 13, 16:10 UTCJul 13, 18:30 UTC2h 20m
2026-07-13 UTA397 - Jul 13, 07:35 UTCJul 13, 14:35 UTC7h 0m
2026-07-13 UTA1250 - Jul 13, 03:05 UTCJul 13, 03:30 UTC25m
2026-07-13 UTA1250 - Jul 13, 00:01 UTCJul 13, 01:55 UTC1h 55m
2026-07-12 UTA1249 - Jul 12, 17:55 UTCJul 12, 21:50 UTC3h 55m
2026-07-12 UTA576 - Jul 12, 16:05 UTCJul 12, 16:25 UTC20m
2026-07-12 UTA576 - Jul 12, 12:50 UTCJul 12, 15:10 UTC2h 20m
2026-07-12 UTA575 - Jul 12, 10:20 UTCJul 12, 10:50 UTC30m
2026-07-12 UTA575 - Jul 12, 07:01 UTCJul 12, 08:25 UTC1h 25m
2026-07-12 UTA364 - Jul 12, 04:45 UTCJul 12, 05:01 UTC15m

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-73068 page for operator, model, and routing details .

Mode-S 151D6C frequently asked

What is Mode-S code 151D6C?
151D6C is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73068.
Where is Mode-S 151D6C registered?
Mode-S code 151D6C is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D6C broadcasting right now?
No active broadcast right now. Last signal was 24d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D6C, octal 05216554, decimal 1,383,788.
What flights does 151D6C operate?
Mode-S 151D6C has broadcast 20 distinct callsigns, including UTA576, UTA575, UTA398, UTA397, UTA250.