Apparatus

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sensors Mode-S transponder

151E25

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73253 · BOEING 737-800

Hex
151E25
Octal
05217045
Decimal
1,383,973
Country
RU
Tail
RA-73253
Type
B738
No current signal · last broadcast Jul 26, 16:10 UTC
Flights observed
137
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 16:10 UTC

Last known position

Most recent position reported by Mode-S 151E25.

Country allocation

The ICAO 24-bit address 151E25 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
TYA104 NordStar 14 2026-07-21
TYA7101 - 10 2026-07-25
TYA102 NordStar 10 2026-07-24
TYA7102 - 7 2026-07-26
TYA416 - 6 2026-07-02
TYA401 NordStar 6 2026-06-10
TYA6101 - 5 2026-04-18
TYA6102 - 4 2026-04-16
TYA403 NordStar 4 2026-05-19
TYA402 NordStar 4 2026-04-22
TYA132 - 4 2026-07-09
TYA106 NordStar 4 2026-06-06
TYA925 NordStar 3 2026-06-24
TYA7205 - 3 2026-05-10
TYA414 NordStar 3 2026-06-09
TYA408 - 3 2026-07-12
TYA142 - 3 2026-07-03
TYA107 NordStar 3 2026-05-29
TYA7207 - 2 2026-05-09
TYA7201 - 2 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TYA7102 - Jul 26, 14:20 UTCJul 26, 16:10 UTC1h 50m
2026-07-25 TYA7101 - Jul 25, 17:20 UTCJul 26, 12:15 UTC18h 56m
2026-07-25 TYA7102 - Jul 25, 16:10 UTCJul 26, 12:15 UTC20h 6m
2026-07-25 TYA7101 - Jul 25, 02:20 UTCJul 25, 14:00 UTC11h 40m
2026-07-24 TYA102 NSK → DME Jul 24, 02:20 UTCJul 24, 03:05 UTC45m
2026-07-21 TYA104 NSK → DME Jul 21, 04:45 UTCJul 21, 06:15 UTC1h 30m
2026-07-20 TYA7102 - Jul 20, 13:50 UTCJul 20, 15:40 UTC1h 50m
2026-07-20 TYA7101 - Jul 20, 10:15 UTCJul 20, 12:20 UTC2h 5m
2026-07-19 TYA7102 - Jul 19, 13:25 UTCJul 20, 05:00 UTC15h 35m
2026-07-19 TYA7101 - Jul 19, 10:10 UTCJul 19, 12:00 UTC1h 50m
2026-07-18 TYA7101 - Jul 18, 15:20 UTCJul 19, 12:00 UTC20h 40m
2026-07-18 TYA7102 - Jul 18, 14:20 UTCJul 19, 10:50 UTC20h 30m
2026-07-18 TYA104 - Jul 18, 02:50 UTCJul 18, 12:55 UTC10h 5m
2026-07-15 TYA7102 - Jul 15, 15:55 UTCJul 15, 17:45 UTC1h 50m
2026-07-15 TYA7101 - Jul 15, 05:15 UTCJul 15, 14:35 UTC9h 20m
2026-07-14 TYA104 - Jul 14, 12:45 UTCJul 15, 06:40 UTC17h 54m
2026-07-13 TYA955 - Jul 13, 15:20 UTCJul 14, 13:10 UTC21h 50m
2026-07-13 TYA7102 - Jul 13, 13:55 UTCJul 14, 13:10 UTC23h 15m
2026-07-13 TYA7101 - Jul 13, 02:30 UTCJul 13, 12:20 UTC9h 50m
2026-07-12 TYA7101 - Jul 12, 13:35 UTCJul 13, 12:20 UTC22h 45m
2026-07-12 TYA408 - Jul 12, 02:20 UTCJul 12, 12:01 UTC9h 40m
2026-07-11 TYA408 - Jul 11, 13:50 UTCJul 12, 12:01 UTC22h 10m
2026-07-10 TYA7101 - Jul 10, 20:50 UTCJul 11, 12:20 UTC15h 30m
2026-07-09 TYA132 - Jul 9, 07:50 UTCJul 9, 22:00 UTC14h 10m
2026-07-08 TYA132 - Jul 8, 14:35 UTCJul 9, 08:45 UTC18h 10m
2026-07-08 TYA7101 - Jul 8, 12:15 UTCJul 8, 12:45 UTC30m
2026-07-07 TYA104 - Jul 7, 21:10 UTCJul 8, 11:30 UTC14h 20m
2026-07-07 TYA104 - Jul 7, 05:20 UTCJul 8, 04:55 UTC23h 35m
2026-07-07 TYA104 - Jul 7, 04:35 UTCJul 7, 21:45 UTC17h 10m
2026-07-06 TYA916 - Jul 6, 03:25 UTCJul 6, 03:50 UTC25m
2026-07-05 TYA4552 - Jul 5, 15:35 UTCJul 6, 00:15 UTC8h 40m
2026-07-05 TYA915 - Jul 5, 06:25 UTCJul 5, 06:55 UTC30m
2026-07-04 TYA321 - Jul 4, 09:05 UTCJul 4, 21:20 UTC12h 15m
2026-07-03 TYA415 - Jul 3, 21:20 UTCJul 3, 21:30 UTC10m
2026-07-03 TYA142 - Jul 3, 14:50 UTCJul 3, 18:45 UTC3h 55m
2026-07-03 TYA141 - Jul 3, 12:05 UTCJul 3, 12:40 UTC35m
2026-07-03 TYA141 - Jul 3, 08:35 UTCJul 3, 08:50 UTC15m
2026-07-02 TYA416 - Jul 2, 21:05 UTCJul 3, 03:35 UTC6h 30m
2026-07-02 TYA104 - Jul 2, 04:25 UTCJul 3, 03:15 UTC22h 50m
2026-07-01 TYA104 - Jul 1, 05:20 UTCJul 2, 05:05 UTC23h 45m
2026-06-30 TYA142 ABA → LED Jun 30, 14:45 UTCJul 1, 05:55 UTC15h 10m
2026-06-29 TYA416 - Jun 29, 20:49 UTCJun 30, 12:50 UTC16h 1m
2026-06-29 TYA409 - Jun 29, 03:39 UTCJun 29, 21:14 UTC17h 35m
2026-06-26 TYA102 NSK → DME Jun 26, 03:20 UTCJun 26, 22:44 UTC19h 25m
2026-06-26 TYA102 NSK → DME Jun 26, 02:14 UTCJun 26, 22:44 UTC20h 30m
2026-06-24 TYA925 NSK → GOJ Jun 24, 08:49 UTCJun 24, 21:09 UTC12h 20m
2026-06-21 TYA104 - Jun 21, 04:20 UTCJun 21, 23:00 UTC18h 40m
2026-06-19 TYA142 ABA → LED Jun 19, 14:54 UTCJun 20, 05:04 UTC14h 10m
2026-06-18 TYA416 - Jun 18, 21:10 UTCJun 19, 12:54 UTC15h 44m
2026-06-17 TYA104 - Jun 17, 08:25 UTCJun 17, 15:15 UTC6h 50m

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-73253 page for operator, model, and routing details .

Mode-S 151E25 frequently asked

What is Mode-S code 151E25?
151E25 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73253.
Where is Mode-S 151E25 registered?
Mode-S code 151E25 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151E25 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151E25, octal 05217045, decimal 1,383,973.
What flights does 151E25 operate?
Mode-S 151E25 has broadcast 20 distinct callsigns, including TYA104, TYA7101, TYA102, TYA7102, TYA416.