Apparatus

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sensors Mode-S transponder

151DB9

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73145 · BOEING 737-800

Hex
151DB9
Octal
05216671
Decimal
1,383,865
Country
RU
Tail
RA-73145
Type
B738
No current signal · last broadcast 17h ago
Flights observed
98
Distinct callsigns
20
Country
RU
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 151DB9.

Country allocation

The ICAO 24-bit address 151DB9 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
UTA572 - 26 2026-07-16
UTA571 UTair Aviation 11 2026-06-16
UTA296 - 8 2026-07-01
UTA463 UTair Aviation 7 2026-05-29
UTA6136 UTair Aviation 5 2026-07-10
UTA248 UTair Aviation 5 2026-06-03
UTA521 UTair Aviation 4 2026-07-07
UTA6135 - 3 2026-07-09
UTA575 UTair Aviation 3 2026-05-23
UTA464 UTair Aviation 3 2026-06-24
UTA249 - 3 2026-06-30
UTA591 UTair Aviation 2 2026-05-06
UTA543 - 2 2026-07-14
UTA435 UTair Aviation 2 2026-04-21
UTA363F - 2 2026-06-17
UTA356 UTair Aviation 2 2026-06-10
UTA295 UTair Aviation 2 2026-04-16
UTA592 UTair Aviation 1 2026-05-08
UTA364 UTair Aviation 1 2026-04-29
UTA358 UTair Aviation 1 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 UTA572 - Jul 16, 22:45 UTCJul 17, 14:55 UTC16h 10m
2026-07-14 UTA543 - Jul 14, 04:55 UTCJul 14, 11:25 UTC6h 30m
2026-07-13 UTA543 - Jul 13, 04:50 UTCJul 13, 05:15 UTC25m
2026-07-10 UTA6136 IAA → VKO Jul 10, 13:10 UTCJul 11, 01:55 UTC12h 45m
2026-07-10 UTA6136 IAA → VKO Jul 10, 00:20 UTCJul 10, 23:15 UTC22h 55m
2026-07-09 UTA6136 IAA → VKO Jul 9, 23:05 UTCJul 10, 14:35 UTC15h 30m
2026-07-09 UTA6135 - Jul 9, 14:20 UTCJul 10, 14:15 UTC23h 55m
2026-07-09 UTA6135 - Jul 9, 08:35 UTCJul 10, 00:20 UTC15h 45m
2026-07-09 UTA6135 - Jul 9, 05:10 UTCJul 10, 00:20 UTC19h 10m
2026-07-07 UTA521 SGC → AER Jul 7, 11:40 UTCJul 7, 12:40 UTC1h 0m
2026-07-05 UTA572 - Jul 5, 22:40 UTCJul 6, 03:10 UTC4h 30m
2026-07-05 UTA572 - Jul 5, 00:40 UTCJul 5, 22:45 UTC22h 5m
2026-07-01 UTA296 - Jul 1, 09:55 UTCJul 1, 15:00 UTC5h 5m
2026-06-30 UTA249 - Jun 30, 16:55 UTCJun 30, 17:25 UTC30m
2026-06-27 UTA249 - Jun 27, 13:09 UTCJun 27, 13:24 UTC15m
2026-06-27 UTA249 - Jun 27, 10:34 UTCJun 27, 10:54 UTC20m
2026-06-24 UTA464 TJM → VKO Jun 24, 15:49 UTCJun 24, 16:05 UTC15m
2026-06-23 UTA296 - Jun 23, 17:15 UTCJun 23, 18:45 UTC1h 30m
2026-06-21 UTA572 - Jun 21, 10:44 UTCJun 22, 01:40 UTC14h 55m
2026-06-17 UTA363F - Jun 17, 19:50 UTCJun 18, 08:25 UTC12h 35m
2026-06-16 UTA363F - Jun 16, 22:35 UTCJun 17, 20:05 UTC21h 30m
2026-06-16 UTA571 VKO → KJA Jun 16, 09:10 UTCJun 16, 22:45 UTC13h 36m
2026-06-12 UTA521 SGC → AER Jun 12, 06:35 UTCJun 12, 12:55 UTC6h 20m
2026-06-11 UTA521 SGC → AER Jun 11, 16:30 UTCJun 12, 12:55 UTC20h 26m
2026-06-10 UTA296 SGC → VKO Jun 10, 16:20 UTCJun 10, 16:50 UTC30m
2026-06-10 UTA296 SGC → VKO Jun 10, 15:15 UTCJun 10, 15:35 UTC20m
2026-06-10 UTA356 GRV → VKO Jun 10, 07:15 UTCJun 10, 07:35 UTC20m
2026-06-10 UTA355 VKO → GRV Jun 10, 02:35 UTCJun 10, 02:55 UTC20m
2026-06-09 UTA357 VKO → KUF Jun 9, 20:20 UTCJun 9, 20:55 UTC35m
2026-06-09 UTA572 KJA → VKO Jun 9, 04:45 UTCJun 9, 05:20 UTC35m
2026-06-08 UTA571 VKO → KJA Jun 8, 19:00 UTCJun 9, 01:25 UTC6h 25m
2026-06-08 UTA296 SGC → VKO Jun 8, 16:05 UTCJun 8, 16:20 UTC15m
2026-06-08 UTA296 SGC → VKO Jun 8, 09:10 UTCJun 8, 15:25 UTC6h 15m
2026-06-07 UTA296 SGC → VKO Jun 7, 17:05 UTCJun 8, 15:25 UTC22h 20m
2026-06-07 UTA572 KJA → VKO Jun 7, 01:15 UTCJun 7, 17:20 UTC16h 5m
2026-06-06 UTA571 VKO → KJA Jun 6, 04:35 UTCJun 6, 23:15 UTC18h 40m
2026-06-06 UTA571 VKO → KJA Jun 6, 02:20 UTCJun 6, 23:15 UTC20h 55m
2026-06-05 UTA572 KJA → VKO Jun 5, 23:30 UTCJun 6, 20:39 UTC21h 10m
2026-06-05 UTA572 KJA → VKO Jun 5, 21:10 UTCJun 6, 20:14 UTC23h 5m
2026-06-05 UTA571 VKO → KJA Jun 5, 01:00 UTCJun 6, 00:00 UTC23h 0m
2026-06-04 UTA571 VKO → KJA Jun 4, 22:30 UTCJun 5, 21:25 UTC22h 55m
2026-06-04 UTA571 VKO → KJA Jun 4, 07:25 UTCJun 5, 01:30 UTC18h 5m
2026-06-03 UTA248 SGC → VKO Jun 3, 21:50 UTCJun 4, 04:05 UTC6h 15m
2026-05-31 UTA571 VKO → KJA May 31, 09:00 UTCJun 1, 01:45 UTC16h 45m
2026-05-30 UTA267 VKO → AER May 30, 09:45 UTCMay 30, 10:05 UTC20m
2026-05-29 UTA463 VKO → TJM May 29, 07:30 UTCMay 29, 07:45 UTC15m
2026-05-28 UTA572 KJA → VKO May 28, 14:50 UTCMay 29, 04:40 UTC13h 50m
2026-05-28 UTA572 KJA → VKO May 28, 09:05 UTCMay 29, 04:40 UTC19h 35m
2026-05-27 UTA572 KJA → VKO May 27, 20:20 UTCMay 28, 15:35 UTC19h 15m
2026-05-27 UTA572 KJA → VKO May 27, 19:50 UTCMay 28, 15:35 UTC19h 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-73145 page for operator, model, and routing details .

Mode-S 151DB9 frequently asked

What is Mode-S code 151DB9?
151DB9 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73145.
Where is Mode-S 151DB9 registered?
Mode-S code 151DB9 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DB9 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DB9, octal 05216671, decimal 1,383,865.
What flights does 151DB9 operate?
Mode-S 151DB9 has broadcast 20 distinct callsigns, including UTA572, UTA571, UTA296, UTA463, UTA6136.