Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 1h ago
Flights observed
51
Distinct callsigns
20
Country
RU
Last broadcast
1h ago

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
TYA925 NordStar 7 2026-05-20
TYA104 NordStar 6 2026-05-23
TYA102 NordStar 6 2026-05-21
TYA4313 - 4 2026-05-13
TYA406 NordStar 3 2026-05-02
TYA405 - 3 2026-04-17
TYA108 NordStar 3 2026-05-24
TYA951 - 2 2026-04-13
TYA4312 - 2 2026-05-14
TYA401 - 2 2026-05-29
TYA107 NordStar 2 2026-05-24
TYA101 NordStar 2 2026-04-20
TYA952 - 1 2026-04-13
TYA917 NordStar 1 2026-04-13
TYA907 NordStar 1 2026-04-25
TYA4400 NordStar 1 2026-05-19
TYA410 NordStar 1 2026-05-17
TYA404 NordStar 1 2026-05-28
TYA301 NordStar 1 2026-04-30
TYA110 NordStar 1 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 TYA401 - May 29, 22:05 UTCMay 29, 23:20 UTC1h 15m
2026-05-28 TYA404 NSK → DME May 28, 02:35 UTCMay 28, 04:10 UTC1h 35m
2026-05-27 TYA103 DME → NSK May 27, 00:04 UTCMay 27, 01:24 UTC1h 20m
2026-05-24 TYA108 KJA → DME May 24, 20:00 UTCMay 25, 04:45 UTC8h 45m
2026-05-24 TYA107 DME → KJA May 24, 05:50 UTCMay 25, 04:15 UTC22h 25m
2026-05-23 TYA107 DME → KJA May 23, 22:50 UTCMay 24, 20:30 UTC21h 40m
2026-05-23 TYA104 NSK → DME May 23, 04:25 UTCMay 23, 23:10 UTC18h 45m
2026-05-21 TYA102 NSK → DME May 21, 15:10 UTCMay 22, 03:55 UTC12h 45m
2026-05-20 TYA925 NSK → GOJ May 20, 06:50 UTCMay 20, 15:10 UTC8h 20m
2026-05-19 TYA925 NSK → GOJ May 19, 14:30 UTCMay 20, 08:15 UTC17h 46m
2026-05-19 TYA4400 DME → UFA May 19, 04:35 UTCMay 19, 14:35 UTC10h 0m
2026-05-17 TYA410 NSK → DME May 17, 15:05 UTCMay 18, 03:15 UTC12h 10m
2026-05-16 TYA110 NSK → DME May 16, 15:05 UTCMay 17, 06:05 UTC15h 0m
2026-05-16 TYA102 NSK → DME May 16, 02:25 UTCMay 16, 15:35 UTC13h 11m
2026-05-15 TYA102 NSK → DME May 15, 05:05 UTCMay 16, 04:00 UTC22h 54m
2026-05-14 TYA104 NSK → DME May 14, 21:25 UTCMay 15, 05:35 UTC8h 10m
2026-05-14 TYA104 NSK → DME May 14, 06:20 UTCMay 15, 05:35 UTC23h 15m
2026-05-14 TYA4312 - May 14, 06:05 UTCMay 14, 21:40 UTC15h 35m
2026-05-13 TYA4312 - May 13, 12:20 UTCMay 14, 06:40 UTC18h 20m
2026-05-13 TYA4313 - May 13, 10:50 UTCMay 14, 06:40 UTC19h 50m
2026-05-13 TYA4313 - May 13, 04:35 UTCMay 13, 12:40 UTC8h 5m
2026-05-12 TYA4313 - May 12, 12:25 UTCMay 13, 12:15 UTC23h 50m
2026-05-12 TYA4313 - May 12, 11:10 UTCMay 13, 05:10 UTC18h 0m
2026-05-10 TYA108 KJA → DME May 10, 15:24 UTCMay 11, 04:40 UTC13h 15m
2026-05-10 TYA108 KJA → DME May 10, 02:45 UTCMay 11, 01:55 UTC23h 10m
2026-05-09 TYA102 NSK → DME May 9, 02:35 UTCMay 9, 05:00 UTC2h 25m
2026-05-08 TYA102 NSK → DME May 8, 08:19 UTCMay 9, 05:00 UTC20h 40m
2026-05-08 TYA102 NSK → DME May 8, 08:05 UTCMay 9, 05:00 UTC20h 55m
2026-05-06 TYA925 NSK → GOJ May 6, 07:01 UTCMay 6, 21:30 UTC14h 29m
2026-05-06 TYA925 NSK → GOJ May 6, 01:20 UTCMay 6, 21:30 UTC20h 9m
2026-05-06 TYA925 NSK → GOJ May 6, 00:10 UTCMay 6, 21:30 UTC21h 19m
2026-05-05 TYA925 NSK → GOJ May 5, 13:15 UTCMay 6, 08:50 UTC19h 35m
2026-05-05 TYA925 NSK → GOJ May 5, 09:55 UTCMay 6, 08:15 UTC22h 20m
2026-05-02 TYA406 NSK → LED May 2, 12:30 UTCMay 2, 21:50 UTC9h 20m
2026-04-30 TYA301 KJA → LED Apr 30, 13:50 UTCApr 30, 14:35 UTC45m
2026-04-25 TYA907 CEK → KRR Apr 25, 14:30 UTCApr 25, 19:35 UTC5h 5m
2026-04-20 TYA101 DME → NSK Apr 20, 19:55 UTCApr 20, 20:10 UTC15m
2026-04-19 TYA101 DME → NSK Apr 19, 22:30 UTCApr 20, 20:10 UTC21h 40m
2026-04-18 TYA104 NSK → DME Apr 18, 05:25 UTCApr 18, 05:50 UTC25m
2026-04-18 TYA104 NSK → DME Apr 18, 04:45 UTCApr 18, 05:50 UTC1h 5m
2026-04-18 TYA104 NSK → DME Apr 18, 04:30 UTCApr 18, 05:20 UTC50m
2026-04-17 TYA405 - Apr 17, 21:25 UTCApr 17, 21:35 UTC10m
2026-04-17 TYA405 - Apr 17, 20:30 UTCApr 17, 21:20 UTC50m
2026-04-17 TYA406 - Apr 17, 15:20 UTCApr 17, 16:05 UTC45m
2026-04-17 TYA406 - Apr 17, 14:30 UTCApr 17, 15:10 UTC40m
2026-04-15 TYA401 DME → NSK Apr 15, 23:10 UTCApr 15, 23:40 UTC30m
2026-04-14 TYA405 - Apr 14, 22:15 UTCApr 14, 22:30 UTC15m
2026-04-13 TYA952 - Apr 13, 16:30 UTCApr 13, 16:45 UTC15m
2026-04-13 TYA951 - Apr 13, 12:20 UTCApr 13, 12:45 UTC25m
2026-04-13 TYA951 - Apr 13, 11:05 UTCApr 13, 11:15 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-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 1h ago.
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 TYA925, TYA104, TYA102, TYA4313, TYA406.