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sensors Mode-S transponder

151E2C

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73260 · BOEING 737-800

Hex
151E2C
Octal
05217054
Decimal
1,383,980
Country
RU
Tail
RA-73260
Type
B738
No current signal · last broadcast 2h ago
Flights observed
105
Distinct callsigns
20
Country
RU
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 151E2C.

Country allocation

The ICAO 24-bit address 151E2C 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
SYL9916 - 14 2026-07-12
SYL736 - 14 2026-07-07
SYL9915 - 13 2026-07-17
SYL9918 - 7 2026-07-02
SYL788 - 6 2026-07-04
SYL9985 - 5 2026-06-26
SYL9926 - 5 2026-07-15
SYL479 - 5 2026-07-15
SYL476 Yakutia Airlines 4 2026-05-10
SYL9946 - 3 2026-07-04
SYL9925 - 3 2026-06-01
SYL9917 - 3 2026-07-17
SYL735 - 3 2026-07-13
SYL473 - 3 2026-06-27
SYL688 Yakutia Airlines 2 2026-04-23
SYL468 Yakutia Airlines 2 2026-06-21
SYL467 Yakutia Airlines 2 2026-05-24
UNNT - 1 2026-06-25
SYL9956 - 1 2026-04-22
SYL9911 Yakutia Airlines 1 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 SYL9917 - Jul 17, 23:35 UTCJul 18, 00:15 UTC40m
2026-07-17 SYL9915 - Jul 17, 11:00 UTCJul 17, 21:25 UTC10h 25m
2026-07-17 SYL285 YKS → OVB Jul 17, 07:20 UTCJul 17, 07:55 UTC35m
2026-07-15 SYL479 - Jul 15, 21:55 UTCJul 16, 08:10 UTC10h 15m
2026-07-15 SYL9926 - Jul 15, 09:35 UTCJul 15, 19:50 UTC10h 15m
2026-07-14 SYL9915 - Jul 14, 21:20 UTCJul 15, 07:05 UTC9h 44m
2026-07-13 SYL735 - Jul 13, 17:20 UTCJul 14, 12:45 UTC19h 25m
2026-07-13 SYL735 - Jul 13, 16:35 UTCJul 14, 12:45 UTC20h 10m
2026-07-12 SYL9916 - Jul 12, 19:20 UTCJul 13, 06:40 UTC11h 20m
2026-07-11 SYL9917 - Jul 11, 21:40 UTCJul 12, 12:45 UTC15h 5m
2026-07-11 SYL9916 - Jul 11, 11:10 UTCJul 11, 11:45 UTC35m
2026-07-07 SYL736 - Jul 7, 12:45 UTCJul 7, 14:20 UTC1h 35m
2026-07-06 - - Jul 6, 11:10 UTCJul 6, 11:25 UTC15m
2026-07-04 SYL9946 - Jul 4, 20:10 UTCJul 5, 08:45 UTC12h 35m
2026-07-04 SYL788 - Jul 4, 01:45 UTCJul 4, 10:10 UTC8h 25m
2026-07-02 SYL9918 - Jul 2, 19:15 UTCJul 3, 12:05 UTC16h 50m
2026-07-02 SYL9915 - Jul 2, 01:35 UTCJul 2, 12:10 UTC10h 35m
2026-07-01 SYL9915 - Jul 1, 01:25 UTCJul 1, 12:10 UTC10h 45m
2026-06-28 SYL9916 - Jun 28, 02:14 UTCJun 28, 10:55 UTC8h 40m
2026-06-27 SYL474 AER → VKO Jun 27, 15:19 UTCJun 27, 15:49 UTC30m
2026-06-27 SYL473 - Jun 27, 11:04 UTCJun 27, 11:35 UTC30m
2026-06-26 SYL9985 - Jun 26, 07:24 UTCJun 26, 08:05 UTC40m
2026-06-25 UNNT - Jun 25, 02:10 UTCJun 25, 12:10 UTC10h 0m
2026-06-24 SYL787 - Jun 24, 01:24 UTCJun 24, 09:59 UTC8h 35m
2026-06-23 SYL479 - Jun 23, 03:09 UTCJun 23, 12:49 UTC9h 40m
2026-06-21 SYL468 LED → SVX Jun 21, 12:35 UTCJun 21, 12:49 UTC15m
2026-06-20 SYL486 - Jun 20, 12:45 UTCJun 20, 13:14 UTC30m
2026-06-20 SYL9915 - Jun 20, 01:24 UTCJun 20, 10:15 UTC8h 50m
2026-06-17 SYL788 - Jun 17, 01:20 UTCJun 17, 10:15 UTC8h 55m
2026-06-16 SYL788 - Jun 16, 13:09 UTCJun 17, 10:15 UTC21h 6m
2026-06-16 SYL736 YKS → VKO Jun 16, 12:10 UTCJun 17, 10:15 UTC22h 6m
2026-06-15 SYL736 YKS → VKO Jun 15, 15:15 UTCJun 16, 13:34 UTC22h 20m
2026-06-15 SYL735 - Jun 15, 14:30 UTCJun 16, 12:45 UTC22h 15m
2026-06-14 SYL9926 - Jun 14, 20:30 UTCJun 15, 05:30 UTC8h 59m
2026-06-13 SYL788 - Jun 13, 15:15 UTCJun 13, 15:40 UTC25m
2026-06-13 SYL788 - Jun 13, 02:05 UTCJun 13, 10:05 UTC7h 59m
2026-06-12 SYL788 - Jun 12, 14:15 UTCJun 13, 10:05 UTC19h 49m
2026-06-12 SYL9985 KUF → SBT Jun 12, 09:25 UTCJun 13, 02:35 UTC17h 10m
2026-06-10 SYL9916 - Jun 10, 21:20 UTCJun 11, 12:50 UTC15h 30m
2026-06-09 SYL736 YKS → VKO Jun 9, 11:55 UTCJun 10, 03:05 UTC15h 10m
2026-06-08 SYL736 YKS → VKO Jun 8, 15:04 UTCJun 9, 13:20 UTC22h 15m
2026-06-08 SYL736 YKS → VKO Jun 8, 14:40 UTCJun 9, 13:00 UTC22h 20m
2026-06-07 SYL9911 OVB → ROV Jun 7, 09:10 UTCJun 7, 09:30 UTC20m
2026-06-05 SYL9916 - Jun 5, 21:35 UTCJun 6, 10:34 UTC13h 0m
2026-06-05 SYL9915 - Jun 5, 10:35 UTCJun 6, 02:20 UTC15h 45m
2026-06-05 SYL9915 - Jun 5, 03:05 UTCJun 6, 02:20 UTC23h 15m
2026-06-05 SYL479 VKO → MRV Jun 5, 02:45 UTCJun 5, 21:50 UTC19h 5m
2026-06-04 SYL479 VKO → MRV Jun 4, 15:05 UTCJun 5, 10:40 UTC19h 35m
2026-06-04 SYL479 VKO → MRV Jun 4, 14:45 UTCJun 5, 10:40 UTC19h 55m
2026-06-03 SYL9916 - Jun 3, 02:45 UTCJun 3, 11:20 UTC8h 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-73260 page for operator, model, and routing details .

Mode-S 151E2C frequently asked

What is Mode-S code 151E2C?
151E2C is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73260.
Where is Mode-S 151E2C registered?
Mode-S code 151E2C is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151E2C broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151E2C, octal 05217054, decimal 1,383,980.
What flights does 151E2C operate?
Mode-S 151E2C has broadcast 20 distinct callsigns, including SYL9916, SYL736, SYL9915, SYL9918, SYL788.