Apparatus

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sensors Mode-S transponder

151EC1

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73409 · BOEING 737-800

Hex
151EC1
Octal
05217301
Decimal
1,384,129
Country
RU
Tail
RA-73409
Type
B738
No current signal · last broadcast 10h ago
Flights observed
120
Distinct callsigns
20
Country
RU
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 151EC1.

Country allocation

The ICAO 24-bit address 151EC1 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
SBI6409 S7 Airlines (Siberia Airlines) 22 2026-05-23
SBI5103 S7 Airlines (Siberia Airlines) 8 2026-07-13
SBI6410 S7 Airlines (Siberia Airlines) 6 2026-05-22
SBI5204 - 6 2026-07-04
SBI5203 - 5 2026-07-13
SBI6402 S7 Airlines (Siberia Airlines) 4 2026-04-19
SBI5211 - 4 2026-07-04
SBI5105 S7 Airlines (Siberia Airlines) 4 2026-06-17
SBI5263 S7 Airlines (Siberia Airlines) 3 2026-07-05
SBI5246 - 3 2026-06-25
SBI5239 S7 Airlines (Siberia Airlines) 3 2026-07-02
SBI8992 S7 Airlines (Siberia Airlines) 2 2026-06-07
SBI6452 - 2 2026-04-17
SBI6451 S7 Airlines (Siberia Airlines) 2 2026-04-17
SBI6419 S7 Airlines (Siberia Airlines) 2 2026-04-20
SBI6404 S7 Airlines (Siberia Airlines) 2 2026-04-20
SBI5264 S7 Airlines (Siberia Airlines) 2 2026-06-14
SBI5258 S7 Airlines (Siberia Airlines) 2 2026-05-20
SBI5245 S7 Airlines (Siberia Airlines) 2 2026-04-30
SBI5242 S7 Airlines (Siberia Airlines) 2 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SBI5203 - Jul 13, 16:15 UTCJul 13, 16:45 UTC30m
2026-07-13 SBI5103 OVB → AER Jul 13, 08:45 UTCJul 13, 09:05 UTC20m
2026-07-12 SBI5240 - Jul 12, 15:15 UTCJul 13, 01:35 UTC10h 20m
2026-07-10 SBI5206 - Jul 10, 14:10 UTCJul 11, 02:20 UTC12h 10m
2026-07-10 SBI5102 - Jul 10, 05:05 UTCJul 10, 05:25 UTC20m
2026-07-09 SBI5008 - Jul 9, 17:00 UTCJul 9, 17:10 UTC10m
2026-07-08 SBI5207 OVB → VVO Jul 8, 19:25 UTCJul 8, 20:00 UTC35m
2026-07-06 SBI5212 - Jul 6, 19:55 UTCJul 7, 04:50 UTC8h 55m
2026-07-05 SBI5263 OVB → YKS Jul 5, 18:25 UTCJul 6, 02:50 UTC8h 25m
2026-07-04 SBI5211 - Jul 4, 19:35 UTCJul 4, 20:05 UTC30m
2026-07-04 SBI5204 - Jul 4, 03:35 UTCJul 4, 04:10 UTC35m
2026-07-02 SBI5239 OVB → IKT Jul 2, 14:45 UTCJul 3, 01:15 UTC10h 30m
2026-06-30 SBI5208 - Jun 30, 18:55 UTCJul 1, 06:55 UTC12h 0m
2026-06-29 SBI5208 - Jun 29, 22:15 UTCJun 30, 06:50 UTC8h 36m
2026-06-26 SBI5001 OVB → LED Jun 26, 08:24 UTCJun 27, 02:25 UTC18h 0m
2026-06-25 SBI5246 - Jun 25, 18:10 UTCJun 26, 02:30 UTC8h 20m
2026-06-24 SBI5103 OVB → AER Jun 24, 10:10 UTCJun 24, 11:05 UTC55m
2026-06-23 SBI5239 OVB → IKT Jun 23, 14:55 UTCJun 24, 01:14 UTC10h 20m
2026-06-21 SBI5203 OVB → VVO Jun 21, 16:30 UTCJun 22, 04:09 UTC11h 40m
2026-06-20 SBI5203 OVB → VVO Jun 20, 16:29 UTCJun 20, 16:59 UTC30m
2026-06-20 SBI5066 - Jun 20, 07:14 UTCJun 20, 09:34 UTC2h 20m
2026-06-20 SBI5065 - Jun 20, 03:39 UTCJun 20, 05:14 UTC1h 35m
2026-06-18 SBI5259 OVB → UUS Jun 18, 14:40 UTCJun 19, 02:09 UTC11h 29m
2026-06-17 SBI5283 OVB → PWE Jun 17, 22:10 UTCJun 18, 11:05 UTC12h 55m
2026-06-17 SBI5105 OVB → AER Jun 17, 11:55 UTCJun 17, 12:15 UTC20m
2026-06-16 SBI5357 - Jun 16, 21:10 UTCJun 17, 03:00 UTC5h 50m
2026-06-14 SBI5264 YKS → OVB Jun 14, 18:20 UTCJun 15, 02:39 UTC8h 20m
2026-06-14 SBI5103 OVB → AER Jun 14, 08:20 UTCJun 14, 08:40 UTC20m
2026-06-13 SBI5263 OVB → YKS Jun 13, 18:15 UTCJun 14, 02:35 UTC8h 20m
2026-06-12 SBI5263 OVB → YKS Jun 12, 18:35 UTCJun 13, 02:45 UTC8h 10m
2026-06-12 SBI5001 OVB → LED Jun 12, 09:30 UTCJun 12, 09:50 UTC20m
2026-06-09 SBI5105 OVB → AER Jun 9, 10:30 UTCJun 10, 03:00 UTC16h 30m
2026-06-08 SBI5103 OVB → AER Jun 8, 07:30 UTCJun 8, 08:25 UTC55m
2026-06-07 SBI5266 GDX → OVB Jun 7, 14:30 UTCJun 8, 01:45 UTC11h 15m
2026-06-07 SBI8992 OVB → IKT Jun 7, 10:45 UTCJun 7, 11:25 UTC40m
2026-06-04 SBI5239 OVB → IKT Jun 4, 14:50 UTCJun 4, 15:25 UTC35m
2026-06-03 SBI5203 OVB → VVO Jun 3, 16:25 UTCJun 4, 04:10 UTC11h 45m
2026-05-31 SBI5204 VVO → OVB May 31, 16:20 UTCJun 1, 04:15 UTC11h 55m
2026-05-30 SBI5211 OVB → BQS May 30, 19:35 UTCMay 31, 11:45 UTC16h 10m
2026-05-29 SBI5242 MJZ → OVB May 29, 22:05 UTCMay 30, 12:25 UTC14h 20m
2026-05-28 SBI5360 TLK → OVB May 28, 21:45 UTCMay 29, 03:15 UTC5h 30m
2026-05-27 SBI5204 VVO → OVB May 27, 16:25 UTCMay 28, 04:30 UTC12h 5m
2026-05-27 SBI5204 VVO → OVB May 27, 01:24 UTCMay 27, 13:20 UTC11h 56m
2026-05-26 SBI5117 OVB → KRR May 26, 11:15 UTCMay 26, 11:50 UTC35m
2026-05-25 SBI5242 MJZ → OVB May 25, 15:00 UTCMay 26, 04:50 UTC13h 49m
2026-05-25 SBI5005 OVB → LED May 25, 09:20 UTCMay 26, 04:50 UTC19h 29m
2026-05-25 SBI5005 OVB → LED May 25, 07:15 UTCMay 26, 04:50 UTC21h 34m
2026-05-24 SBI6416 SVX → IKT May 24, 12:10 UTCMay 25, 03:30 UTC15h 20m
2026-05-23 SBI6415 IKT → SVX May 23, 13:25 UTCMay 24, 07:00 UTC17h 36m
2026-05-23 SBI6409 IKT → LED May 23, 06:00 UTCMay 23, 13:50 UTC7h 50m

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-73409 page for operator, model, and routing details .

Mode-S 151EC1 frequently asked

What is Mode-S code 151EC1?
151EC1 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73409.
Where is Mode-S 151EC1 registered?
Mode-S code 151EC1 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151EC1 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151EC1, octal 05217301, decimal 1,384,129.
What flights does 151EC1 operate?
Mode-S 151EC1 has broadcast 20 distinct callsigns, including SBI6409, SBI5103, SBI6410, SBI5204, SBI5203.