Apparatus

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sensors Mode-S transponder

151F19

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73497 · BOEING 737-800

Hex
151F19
Octal
05217431
Decimal
1,384,217
Country
RU
Tail
RA-73497
Type
B738
No current signal · last broadcast 2d ago
Flights observed
46
Distinct callsigns
20
Country
RU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 151F19.

Country allocation

The ICAO 24-bit address 151F19 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
UTA571 - 6 2026-06-18
UTA464 UTair Aviation 4 2026-06-03
UTA543 UTair Aviation 3 2026-06-13
UTA509 UTair Aviation 3 2026-06-09
UTA358 UTair Aviation 3 2026-05-12
UTA6136 UTair Aviation 2 2026-07-02
UTA592 UTair Aviation 2 2026-05-22
UTA572 UTair Aviation 2 2026-05-08
UTA544 - 2 2026-07-05
UTA364 UTair Aviation 2 2026-05-14
UTA296 - 2 2026-07-13
UTA553 UTair Aviation 1 2026-06-06
UTA544F - 1 2026-06-15
UTA521 UTair Aviation 1 2026-06-08
UTA515 UTair Aviation 1 2026-05-16
UTA511 UTair Aviation 1 2026-06-11
UTA507 UTair Aviation 1 2026-06-13
UTA453F - 1 2026-06-05
UTA423 - 1 2026-07-16
UTA363 UTair Aviation 1 2026-04-19

Recent flights last 46

DateFlightRouteTakeoffLandingDuration
2026-07-16 UTA423 - Jul 16, 06:45 UTCJul 16, 07:30 UTC45m
2026-07-13 UTA296 - Jul 13, 14:35 UTCJul 13, 15:00 UTC25m
2026-07-05 UTA544 - Jul 5, 19:05 UTCJul 5, 19:20 UTC15m
2026-07-05 UTA291 - Jul 5, 07:55 UTCJul 5, 08:15 UTC20m
2026-07-02 UTA6136 IAA → VKO Jul 2, 12:30 UTCJul 2, 13:10 UTC40m
2026-06-25 UTA270 - Jun 25, 10:20 UTCJun 25, 10:30 UTC10m
2026-06-18 UTA571 - Jun 18, 22:10 UTCJun 19, 01:19 UTC3h 9m
2026-06-15 UTA544F - Jun 15, 13:30 UTCJun 15, 14:30 UTC1h 0m
2026-06-13 UTA507 LED → KRR Jun 13, 07:40 UTCJun 13, 08:00 UTC20m
2026-06-13 UTA543 TJM → LED Jun 13, 04:45 UTCJun 13, 04:55 UTC10m
2026-06-11 UTA511 SGC → AER Jun 11, 13:40 UTCJun 11, 14:40 UTC1h 0m
2026-06-09 UTA509 TJM → MRV Jun 9, 21:50 UTCJun 10, 16:10 UTC18h 20m
2026-06-08 UTA521 SGC → AER Jun 8, 06:40 UTCJun 8, 08:30 UTC1h 50m
2026-06-06 UTA553 SGC → GDZ Jun 6, 06:35 UTCJun 6, 22:44 UTC16h 10m
2026-06-05 UTA453F - Jun 5, 03:35 UTCJun 5, 04:00 UTC25m
2026-06-03 UTA464 TJM → VKO Jun 3, 14:15 UTCJun 3, 21:15 UTC7h 0m
2026-06-02 UTA544 LED → TJM Jun 2, 20:40 UTCJun 3, 14:35 UTC17h 55m
2026-06-02 UTA543 TJM → LED Jun 2, 05:55 UTCJun 2, 06:10 UTC15m
2026-06-02 UTA543 TJM → LED Jun 2, 04:30 UTCJun 2, 05:10 UTC40m
2026-05-29 UTA464 TJM → VKO May 29, 14:10 UTCMay 29, 19:35 UTC5h 25m
2026-05-25 UTA296 SGC → VKO May 25, 15:40 UTCMay 25, 16:10 UTC30m
2026-05-25 UTA295 VKO → SGC May 25, 10:10 UTCMay 25, 10:20 UTC10m
2026-05-25 UTA248 SGC → VKO May 25, 04:35 UTCMay 25, 05:05 UTC30m
2026-05-22 UTA592 UFA → VKO May 22, 08:15 UTCMay 22, 13:40 UTC5h 25m
2026-05-16 UTA509 TJM → MRV May 16, 16:35 UTCMay 17, 10:45 UTC18h 10m
2026-05-16 UTA515 TJM → AER May 16, 03:55 UTCMay 16, 17:40 UTC13h 46m
2026-05-14 UTA364 UFA → VKO May 14, 08:35 UTCMay 15, 04:00 UTC19h 25m
2026-05-12 UTA358 KUF → VKO May 12, 20:01 UTCMay 13, 08:00 UTC12h 0m
2026-05-12 UTA364 UFA → VKO May 12, 03:30 UTCMay 12, 20:10 UTC16h 40m
2026-05-10 UTA464 TJM → VKO May 10, 02:50 UTCMay 10, 14:40 UTC11h 50m
2026-05-09 UTA509 TJM → MRV May 9, 08:50 UTCMay 9, 16:15 UTC7h 25m
2026-05-08 UTA572 KJA → VKO May 8, 06:14 UTCMay 8, 09:49 UTC3h 35m
2026-05-06 UTA464 TJM → VKO May 6, 14:25 UTCMay 6, 14:40 UTC15m
2026-05-01 UTA572 KJA → VKO May 1, 19:40 UTCMay 2, 04:00 UTC8h 20m
2026-05-01 UTA571 VKO → KJA May 1, 00:40 UTCMay 1, 22:35 UTC21h 55m
2026-04-30 UTA571 VKO → KJA Apr 30, 22:20 UTCMay 1, 22:15 UTC23h 55m
2026-04-30 UTA571 VKO → KJA Apr 30, 22:00 UTCMay 1, 20:05 UTC22h 5m
2026-04-30 UTA571 VKO → KJA Apr 30, 19:05 UTCApr 30, 19:15 UTC10m
2026-04-29 UTA6136 IAA → VKO Apr 29, 13:05 UTCApr 29, 15:45 UTC2h 40m
2026-04-27 UTA571 VKO → KJA Apr 27, 15:00 UTCApr 28, 08:20 UTC17h 20m
2026-04-24 UTA592 UFA → VKO Apr 24, 13:05 UTCApr 24, 14:40 UTC1h 35m
2026-04-19 UTA363 VKO → UFA Apr 19, 23:25 UTCApr 20, 16:35 UTC17h 10m
2026-04-18 UTA358 KUF → VKO Apr 18, 22:10 UTCApr 18, 22:25 UTC15m
2026-04-18 UTA357 VKO → KUF Apr 18, 19:30 UTCApr 18, 19:50 UTC20m
2026-04-18 UTA267 VKO → AER Apr 18, 12:20 UTCApr 18, 12:50 UTC30m
2026-04-16 UTA358 KUF → VKO Apr 16, 19:50 UTCApr 16, 20:00 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-73497 page for operator, model, and routing details .

Mode-S 151F19 frequently asked

What is Mode-S code 151F19?
151F19 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73497.
Where is Mode-S 151F19 registered?
Mode-S code 151F19 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151F19 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151F19, octal 05217431, decimal 1,384,217.
What flights does 151F19 operate?
Mode-S 151F19 has broadcast 20 distinct callsigns, including UTA571, UTA464, UTA543, UTA509, UTA358.