Apparatus

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sensors Mode-S transponder

151E27

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73255 · BOEING 737-800

Hex
151E27
Octal
05217047
Decimal
1,383,975
Country
RU
Tail
RA-73255
Type
B738
No current signal · last broadcast 7h ago
Flights observed
85
Distinct callsigns
20
Country
RU
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 151E27.

Country allocation

The ICAO 24-bit address 151E27 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
TYA406 NordStar 10 2026-06-13
TYA104 NordStar 7 2026-05-25
TYA302 - 6 2026-07-11
TYA321 NordStar 5 2026-06-24
TYA4552 - 4 2026-07-12
TYA333 - 4 2026-07-08
TYA301 - 4 2026-07-11
TYA103 - 3 2026-07-01
TYA101 NordStar 3 2026-06-26
TYA4553 - 2 2026-07-13
TYA4222 - 2 2026-06-03
TYA415 NordStar 2 2026-06-05
TYA402 - 2 2026-06-17
TYA401 - 2 2026-05-27
TYA334 - 2 2026-07-09
TYA322 NordStar 2 2026-06-17
TYA142 NordStar 2 2026-06-05
TYA141 NordStar 2 2026-06-04
TYA9909 NordStar 1 2026-05-02
TYA956 - 1 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TYA4525 - Jul 14, 03:35 UTCJul 14, 04:05 UTC30m
2026-07-13 TYA4553 - Jul 13, 15:35 UTCJul 14, 00:15 UTC8h 40m
2026-07-12 TYA4552 - Jul 12, 15:50 UTCJul 13, 11:45 UTC19h 55m
2026-07-12 TYA4552 - Jul 12, 15:35 UTCJul 13, 11:45 UTC20h 10m
2026-07-11 TYA302 - Jul 11, 22:25 UTCJul 12, 09:20 UTC10h 55m
2026-07-11 TYA301 - Jul 11, 17:25 UTCJul 11, 17:35 UTC10m
2026-07-11 TYA301 - Jul 11, 13:00 UTCJul 11, 16:50 UTC3h 50m
2026-07-09 TYA334 - Jul 9, 05:35 UTCJul 9, 17:55 UTC12h 20m
2026-07-08 TYA334 - Jul 8, 22:45 UTCJul 9, 17:55 UTC19h 10m
2026-07-08 TYA333 - Jul 8, 13:25 UTCJul 9, 06:15 UTC16h 50m
2026-07-08 TYA333 - Jul 8, 08:20 UTCJul 9, 06:15 UTC21h 55m
2026-07-02 TYA333 - Jul 2, 06:55 UTCJul 2, 19:00 UTC12h 5m
2026-07-01 TYA103 - Jul 1, 01:10 UTCJul 1, 01:20 UTC10m
2026-06-28 TYA4400 DME → UFA Jun 28, 22:34 UTCJun 29, 07:25 UTC8h 50m
2026-06-28 TA104 - Jun 28, 05:15 UTCJun 28, 22:34 UTC17h 20m
2026-06-26 TYA101 DME → NSK Jun 26, 14:05 UTCJun 26, 21:39 UTC7h 35m
2026-06-24 TYA333 - Jun 24, 23:20 UTCJun 25, 11:39 UTC12h 20m
2026-06-24 TYA321 KJA → AER Jun 24, 09:09 UTCJun 24, 14:20 UTC5h 10m
2026-06-23 TYA321 KJA → AER Jun 23, 16:09 UTCJun 24, 14:20 UTC22h 10m
2026-06-23 TYA321 KJA → AER Jun 23, 15:15 UTCJun 24, 13:40 UTC22h 25m
2026-06-23 TYA956 - Jun 23, 11:49 UTCJun 24, 09:55 UTC22h 5m
2026-06-23 TYA955 - Jun 23, 10:55 UTCJun 24, 09:45 UTC22h 50m
2026-06-20 TYA301 KJA → LED Jun 20, 13:09 UTCJun 20, 16:55 UTC3h 45m
2026-06-18 TYA4553 - Jun 18, 03:35 UTCJun 18, 12:15 UTC8h 40m
2026-06-17 TYA322 AER → KJA Jun 17, 22:35 UTCJun 18, 02:00 UTC3h 25m
2026-06-17 TYA402 - Jun 17, 03:40 UTCJun 17, 03:55 UTC15m
2026-06-17 TYA402 - Jun 17, 01:30 UTCJun 17, 02:05 UTC35m
2026-06-15 TYA916 OVB → NSK Jun 15, 04:04 UTCJun 15, 04:30 UTC25m
2026-06-14 TYA4552 - Jun 14, 15:45 UTCJun 15, 00:29 UTC8h 44m
2026-06-13 TYA302 LED → KJA Jun 13, 18:15 UTCJun 14, 08:35 UTC14h 21m
2026-06-13 TYA302 LED → KJA Jun 13, 17:20 UTCJun 13, 17:35 UTC15m
2026-06-13 TYA406 NSK → LED Jun 13, 14:40 UTCJun 13, 14:50 UTC10m
2026-06-13 TYA406 NSK → LED Jun 13, 12:35 UTCJun 13, 14:05 UTC1h 30m
2026-06-11 TYA913 NSK → OMS Jun 11, 12:05 UTCJun 11, 12:50 UTC45m
2026-06-08 TYA4410 KJA → UFA Jun 8, 04:50 UTCJun 8, 05:35 UTC45m
2026-06-06 TYA103 DME → NSK Jun 6, 22:20 UTCJun 6, 23:30 UTC1h 10m
2026-06-05 TYA415 LED → NSK Jun 5, 21:45 UTCJun 5, 23:15 UTC1h 30m
2026-06-05 TYA415 LED → NSK Jun 5, 20:55 UTCJun 5, 21:15 UTC20m
2026-06-05 TYA142 ABA → LED Jun 5, 14:45 UTCJun 5, 18:25 UTC3h 40m
2026-06-04 TYA141 LED → ABA Jun 4, 20:00 UTCJun 5, 12:45 UTC16h 45m
2026-06-03 TYA405 LED → NSK Jun 3, 20:15 UTCJun 4, 03:55 UTC7h 40m
2026-06-03 TYA301 KJA → LED Jun 3, 10:20 UTCJun 3, 17:00 UTC6h 40m
2026-06-03 TYA4222 - Jun 3, 01:00 UTCJun 3, 07:35 UTC6h 35m
2026-06-02 TYA322 AER → KJA Jun 2, 12:45 UTCJun 2, 22:45 UTC10h 0m
2026-06-02 TYA321 KJA → AER Jun 2, 01:40 UTCJun 2, 06:55 UTC5h 15m
2026-06-01 TYA321 KJA → AER Jun 1, 04:00 UTCJun 2, 02:20 UTC22h 20m
2026-05-31 TY14551 - May 31, 16:05 UTCJun 1, 00:55 UTC8h 50m
2026-05-30 TYA302 LED → KJA May 30, 21:00 UTCMay 30, 21:25 UTC25m
2026-05-30 TYA302 LED → KJA May 30, 17:20 UTCMay 30, 17:35 UTC15m
2026-05-30 TYA406 NSK → LED May 30, 12:25 UTCMay 30, 14:00 UTC1h 35m

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-73255 page for operator, model, and routing details .

Mode-S 151E27 frequently asked

What is Mode-S code 151E27?
151E27 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73255.
Where is Mode-S 151E27 registered?
Mode-S code 151E27 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151E27 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151E27, octal 05217047, decimal 1,383,975.
What flights does 151E27 operate?
Mode-S 151E27 has broadcast 20 distinct callsigns, including TYA406, TYA104, TYA302, TYA321, TYA4552.