Apparatus

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sensors Mode-S transponder

151E2B

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73259 · BOEING 737-300

Hex
151E2B
Octal
05217053
Decimal
1,383,979
Country
RU
Tail
RA-73259
Type
B733
No current signal · last broadcast 3d ago
Flights observed
41
Distinct callsigns
6
Country
RU
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 151E2B.

Country allocation

The ICAO 24-bit address 151E2B 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 6 distinct

Callsign Airline Flights Last seen
TYA534 - 16 2026-07-03
TYA1091 - 13 2026-07-08
TYA1092 NordStar 8 2026-06-08
TYA533 - 2 2026-07-10
TYA107 - 1 2026-06-28
TYA1051 NordStar 1 2026-06-01

Recent flights last 41

DateFlightRouteTakeoffLandingDuration
2026-07-10 TYA533 - Jul 10, 10:35 UTCJul 10, 23:15 UTC12h 40m
2026-07-08 TYA1091 - Jul 8, 22:30 UTCJul 8, 22:40 UTC10m
2026-07-03 TYA534 - Jul 3, 22:35 UTCJul 3, 23:20 UTC45m
2026-06-28 TYA107 - Jun 28, 22:55 UTCJun 29, 02:25 UTC3h 30m
2026-06-23 TYA534 TYN → KJA Jun 23, 10:24 UTCJun 24, 00:25 UTC14h 0m
2026-06-22 TYA534 TYN → KJA Jun 22, 22:49 UTCJun 23, 22:44 UTC23h 55m
2026-06-22 TYA533 - Jun 22, 22:44 UTCJun 23, 10:55 UTC12h 10m
2026-06-19 TYA534 TYN → KJA Jun 19, 22:45 UTCJun 19, 23:19 UTC35m
2026-06-19 TYA534 TYN → KJA Jun 19, 02:35 UTCJun 19, 23:19 UTC20h 45m
2026-06-10 TYA534 TYN → KJA Jun 10, 01:20 UTCJun 10, 02:00 UTC40m
2026-06-08 TYA1091 DME → KRO Jun 8, 23:25 UTCJun 8, 23:40 UTC15m
2026-06-08 TYA1092 KRO → DME Jun 8, 03:20 UTCJun 8, 23:40 UTC20h 20m
2026-06-02 TYA534 TYN → KJA Jun 2, 10:30 UTCJun 3, 01:50 UTC15h 20m
2026-06-01 TYA1091 DME → KRO Jun 1, 23:10 UTCJun 2, 22:40 UTC23h 30m
2026-06-01 TYA1091 DME → KRO Jun 1, 22:35 UTCJun 2, 11:00 UTC12h 25m
2026-06-01 TYA1051 DME → OGZ Jun 1, 09:25 UTCJun 1, 09:40 UTC15m
2026-06-01 TYA1092 KRO → DME Jun 1, 04:30 UTCJun 1, 04:40 UTC10m
2026-05-31 TYA1092 KRO → DME May 31, 22:40 UTCJun 1, 03:50 UTC5h 10m
2026-05-30 TYA1091 DME → KRO May 30, 23:15 UTCMay 31, 22:45 UTC23h 30m
2026-05-28 TYA1091 DME → KRO May 28, 23:15 UTCMay 29, 08:40 UTC9h 25m
2026-05-28 TYA1091 DME → KRO May 28, 03:25 UTCMay 28, 23:55 UTC20h 30m
2026-05-26 TYA534 TYN → KJA May 26, 03:09 UTCMay 26, 23:25 UTC20h 15m
2026-05-25 TYA1092 KRO → DME May 25, 08:50 UTCMay 26, 03:40 UTC18h 49m
2026-05-25 TYA1092 KRO → DME May 25, 08:00 UTCMay 26, 03:40 UTC19h 39m
2026-05-20 TYA1091 DME → KRO May 20, 23:40 UTCMay 21, 00:00 UTC20m
2026-05-20 TYA534 TYN → KJA May 20, 02:50 UTCMay 20, 03:00 UTC10m
2026-05-19 TYA534 TYN → KJA May 19, 10:30 UTCMay 19, 23:15 UTC12h 45m
2026-05-12 TYA534 TYN → KJA May 12, 22:20 UTCMay 13, 02:00 UTC3h 40m
2026-05-12 TYA534 TYN → KJA May 12, 03:30 UTCMay 13, 02:00 UTC22h 30m
2026-05-08 TYA534 TYN → KJA May 8, 10:39 UTCMay 8, 23:30 UTC12h 50m
2026-05-08 TYA534 TYN → KJA May 8, 04:04 UTCMay 8, 23:30 UTC19h 25m
2026-05-08 TYA1091 DME → KRO May 8, 00:14 UTCMay 8, 22:45 UTC22h 30m
2026-05-05 TYA534 TYN → KJA May 5, 19:20 UTCMay 5, 23:20 UTC4h 0m
2026-04-30 TYA1091 DME → KRO Apr 30, 22:35 UTCApr 30, 22:50 UTC15m
2026-04-28 TYA1092 KRO → DME Apr 28, 00:00 UTCApr 28, 04:00 UTC4h 0m
2026-04-24 TYA534 TYN → KJA Apr 24, 22:55 UTCApr 25, 02:55 UTC4h 0m
2026-04-17 TYA1092 KRO → DME Apr 17, 03:20 UTCApr 17, 03:55 UTC35m
2026-04-15 TYA1091 DME → KRO Apr 15, 23:35 UTCApr 15, 23:55 UTC20m
2026-04-15 TYA1091 DME → KRO Apr 15, 22:35 UTCApr 15, 23:00 UTC25m
2026-04-13 TYA1091 - Apr 13, 23:05 UTCApr 13, 23:35 UTC30m
2026-04-13 TYA1092 KRO → DME Apr 13, 04:55 UTCApr 13, 06:15 UTC1h 20m

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-73259 page for operator, model, and routing details .

Mode-S 151E2B frequently asked

What is Mode-S code 151E2B?
151E2B is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73259.
Where is Mode-S 151E2B registered?
Mode-S code 151E2B is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151E2B broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151E2B, octal 05217053, decimal 1,383,979.
What flights does 151E2B operate?
Mode-S 151E2B has broadcast 6 distinct callsigns, including TYA534, TYA1091, TYA1092, TYA533, TYA107.