Apparatus

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sensors Mode-S transponder

151E29

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73257 · BOEING 737-800

Hex
151E29
Octal
05217051
Decimal
1,383,977
Country
RU
Tail
RA-73257
Type
B738
No current signal · last broadcast Jul 26, 20:45 UTC
Flights observed
104
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 20:45 UTC

Last known position

Most recent position reported by Mode-S 151E29.

Country allocation

The ICAO 24-bit address 151E29 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
TYA301 NordStar 12 2026-07-26
TYA104 - 10 2026-06-26
TYA102 NordStar 9 2026-07-17
TYA925 NordStar 7 2026-05-20
TYA406 - 5 2026-07-15
TYA103 NordStar 5 2026-07-19
TYA4313 - 4 2026-05-13
TYA321 - 4 2026-07-14
TYA951 NordStar 3 2026-06-13
TYA405 - 3 2026-04-17
TYA404 NordStar 3 2026-07-23
TYA401 NordStar 3 2026-06-19
TYA142 NordStar 3 2026-07-24
TYA108 NordStar 3 2026-05-24
TYA952 NordStar 2 2026-07-25
TYA4312 - 2 2026-05-14
TYA416 NordStar 2 2026-07-24
TYA409 NordStar 2 2026-06-01
TYA322 - 2 2026-07-12
TYA302 - 2 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TYA301 KJA → LED Jul 26, 10:50 UTCJul 26, 20:45 UTC9h 55m
2026-07-25 TYA301 KJA → LED Jul 25, 20:25 UTCJul 26, 14:20 UTC17h 56m
2026-07-25 TYA301 KJA → LED Jul 25, 20:10 UTCJul 26, 14:20 UTC18h 11m
2026-07-25 TYA301 KJA → LED Jul 25, 17:20 UTCJul 26, 14:15 UTC20h 56m
2026-07-25 TYA952 VOG → SVX Jul 25, 02:20 UTCJul 25, 20:45 UTC18h 25m
2026-07-24 TYA142 ABA → LED Jul 24, 21:00 UTCJul 25, 20:10 UTC23h 10m
2026-07-24 TYA142 ABA → LED Jul 24, 18:20 UTCJul 25, 17:30 UTC23h 10m
2026-07-24 TYA142 ABA → LED Jul 24, 08:20 UTCJul 25, 02:30 UTC18h 10m
2026-07-24 TYA416 NSK → LED Jul 24, 07:25 UTCJul 25, 02:30 UTC19h 5m
2026-07-24 TYA416 NSK → LED Jul 24, 01:35 UTCJul 24, 22:05 UTC20h 30m
2026-07-23 TYA404 NSK → DME Jul 23, 02:25 UTCJul 24, 02:15 UTC23h 50m
2026-07-22 TYA404 NSK → DME Jul 22, 21:05 UTCJul 23, 03:55 UTC6h 50m
2026-07-21 TYA910 - Jul 21, 20:50 UTCJul 21, 21:10 UTC20m
2026-07-19 TYA103 DME → NSK Jul 19, 22:55 UTCJul 19, 23:50 UTC55m
2026-07-17 TYA102 NSK → DME Jul 17, 02:39 UTCJul 17, 04:10 UTC1h 30m
2026-07-15 TYA406 - Jul 15, 12:45 UTCJul 15, 21:35 UTC8h 50m
2026-07-14 TYA321 - Jul 14, 09:15 UTCJul 14, 14:40 UTC5h 25m
2026-07-13 TYA321 - Jul 13, 12:20 UTCJul 14, 09:55 UTC21h 35m
2026-07-12 TYA322 - Jul 12, 09:15 UTCJul 12, 22:40 UTC13h 25m
2026-07-11 TYA321 - Jul 11, 12:20 UTCJul 12, 09:55 UTC21h 35m
2026-07-11 TYA321 - Jul 11, 12:10 UTCJul 12, 09:55 UTC21h 45m
2026-07-09 TYA4494 - Jul 9, 07:25 UTCJul 9, 07:45 UTC20m
2026-07-09 TYA4493 - Jul 9, 04:15 UTCJul 9, 04:35 UTC20m
2026-07-06 TYA106 NSK → DME Jul 6, 14:15 UTCJul 6, 21:40 UTC7h 25m
2026-07-03 TYA102 NSK → DME Jul 3, 03:25 UTCJul 3, 03:55 UTC30m
2026-07-01 TYA322 - Jul 1, 20:40 UTCJul 1, 21:20 UTC40m
2026-06-28 TYA302 - Jun 28, 20:34 UTCJun 29, 12:24 UTC15h 50m
2026-06-28 TYA302 - Jun 28, 17:00 UTCJun 28, 17:10 UTC10m
2026-06-28 TYA301 KJA → LED Jun 28, 10:30 UTCJun 28, 10:55 UTC25m
2026-06-26 TYA104 - Jun 26, 04:30 UTCJun 26, 23:19 UTC18h 50m
2026-06-25 TYA104 - Jun 25, 22:49 UTCJun 26, 22:14 UTC23h 25m
2026-06-24 TYA301 KJA → LED Jun 24, 13:05 UTCJun 24, 16:19 UTC3h 15m
2026-06-22 TYA103 - Jun 22, 04:19 UTCJun 22, 23:20 UTC19h 0m
2026-06-22 TYA103 - Jun 22, 04:09 UTCJun 22, 23:20 UTC19h 10m
2026-06-21 TYA301 KJA → LED Jun 21, 10:34 UTCJun 22, 04:40 UTC18h 5m
2026-06-20 TYA131 - Jun 20, 19:55 UTCJun 21, 00:10 UTC4h 15m
2026-06-19 TYA401 DME → NSK Jun 19, 23:34 UTCJun 20, 13:04 UTC13h 30m
2026-06-19 TYA102 NSK → DME Jun 19, 02:29 UTCJun 19, 04:50 UTC2h 20m
2026-06-14 TYA301 KJA → LED Jun 14, 10:40 UTCJun 14, 20:55 UTC10h 15m
2026-06-13 TYA301 KJA → LED Jun 13, 12:20 UTCJun 14, 11:10 UTC22h 51m
2026-06-13 TYA951 SVX → VOG Jun 13, 12:10 UTCJun 13, 12:25 UTC15m
2026-06-12 TYA104 - Jun 12, 07:00 UTCJun 12, 07:10 UTC10m
2026-06-11 TYA104 - Jun 11, 22:35 UTCJun 12, 06:10 UTC7h 36m
2026-06-07 TYA301 KJA → LED Jun 7, 12:40 UTCJun 7, 18:15 UTC5h 35m
2026-06-06 TYA301 KJA → LED Jun 6, 21:15 UTCJun 7, 18:15 UTC21h 0m
2026-06-06 TYA406 NSK → LED Jun 6, 12:35 UTCJun 6, 21:40 UTC9h 5m
2026-06-04 TYA103 DME → NSK Jun 4, 22:00 UTCJun 4, 22:30 UTC30m
2026-06-04 TYA1092 KRO → DME Jun 4, 02:55 UTCJun 4, 22:30 UTC19h 35m
2026-06-03 TYA110 NSK → DME Jun 3, 09:00 UTCJun 4, 03:35 UTC18h 35m
2026-06-01 TYA409 DME → NSK Jun 1, 04:20 UTCJun 1, 23:35 UTC19h 15m

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-73257 page for operator, model, and routing details .

Mode-S 151E29 frequently asked

What is Mode-S code 151E29?
151E29 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73257.
Where is Mode-S 151E29 registered?
Mode-S code 151E29 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151E29 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151E29, octal 05217051, decimal 1,383,977.
What flights does 151E29 operate?
Mode-S 151E29 has broadcast 20 distinct callsigns, including TYA301, TYA104, TYA102, TYA925, TYA406.