Apparatus

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sensors Mode-S transponder

151FC1

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73665 · BOEING 737-800

Hex
151FC1
Octal
05217701
Decimal
1,384,385
Country
RU
Tail
RA-73665
Type
B738
No current signal · last broadcast 1d ago
Flights observed
70
Distinct callsigns
20
Country
RU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 151FC1.

Country allocation

The ICAO 24-bit address 151FC1 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) 12 2026-06-11
SBI5204 S7 Airlines (Siberia Airlines) 6 2026-05-22
SBI5212 S7 Airlines (Siberia Airlines) 5 2026-05-27
SBI6410 S7 Airlines (Siberia Airlines) 4 2026-06-07
SBI5250 S7 Airlines (Siberia Airlines) 3 2026-05-15
SBI5127 S7 Airlines (Siberia Airlines) 3 2026-05-19
SBI5066 S7 Airlines (Siberia Airlines) 3 2026-05-16
SBI5065 S7 Airlines (Siberia Airlines) 3 2026-05-16
SBI6419 S7 Airlines (Siberia Airlines) 2 2026-06-08
SBI5304 S7 Airlines (Siberia Airlines) 2 2026-05-08
SBI5266 S7 Airlines (Siberia Airlines) 2 2026-05-29
SBI5232 S7 Airlines (Siberia Airlines) 2 2026-05-01
SBI5229 S7 Airlines (Siberia Airlines) 2 2026-04-30
SBI5105 S7 Airlines (Siberia Airlines) 2 2026-05-27
SBI5046 S7 Airlines (Siberia Airlines) 2 2026-05-22
SBI5005 S7 Airlines (Siberia Airlines) 2 2026-05-24
SBI6416 S7 Airlines (Siberia Airlines) 1 2026-06-04
SBI6415 S7 Airlines (Siberia Airlines) 1 2026-06-11
SBI5556 S7 Airlines (Siberia Airlines) 1 2026-04-29
SBI5555 S7 Airlines (Siberia Airlines) 1 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-11 SBI6409 IKT → LED Jun 11, 12:50 UTCJun 12, 07:05 UTC18h 15m
2026-06-11 SBI6415 IKT → SVX Jun 11, 06:50 UTCJun 12, 06:15 UTC23h 26m
2026-06-09 SBI6409 IKT → LED Jun 9, 05:45 UTCJun 9, 13:55 UTC8h 10m
2026-06-08 SBI6409 IKT → LED Jun 8, 12:20 UTCJun 9, 11:15 UTC22h 55m
2026-06-08 SBI6409 IKT → LED Jun 8, 11:50 UTCJun 9, 07:10 UTC19h 20m
2026-06-08 SBI6419 IKT → UFA Jun 8, 05:20 UTCJun 8, 12:30 UTC7h 10m
2026-06-07 SBI6419 IKT → UFA Jun 7, 13:30 UTCJun 8, 12:15 UTC22h 45m
2026-06-07 SBI6410 LED → IKT Jun 7, 09:45 UTCJun 7, 10:10 UTC25m
2026-06-06 SBI6409 IKT → LED Jun 6, 13:30 UTCJun 7, 07:10 UTC17h 40m
2026-06-06 SBI6409 IKT → LED Jun 6, 10:45 UTCJun 7, 07:10 UTC20h 25m
2026-06-06 SBI6410 LED → IKT Jun 6, 09:45 UTCJun 6, 10:04 UTC20m
2026-06-05 SBI6409 IKT → LED Jun 5, 13:50 UTCJun 6, 07:00 UTC17h 10m
2026-06-04 SBI6409 IKT → LED Jun 4, 12:45 UTCJun 5, 07:05 UTC18h 20m
2026-06-04 SBI6416 SVX → IKT Jun 4, 06:50 UTCJun 5, 06:15 UTC23h 25m
2026-06-02 SBI6410 LED → IKT Jun 2, 10:45 UTCJun 2, 14:00 UTC3h 15m
2026-06-02 SBI6410 LED → IKT Jun 2, 09:50 UTCJun 2, 10:05 UTC15m
2026-06-01 SBI6409 IKT → LED Jun 1, 13:20 UTCJun 2, 07:15 UTC17h 55m
2026-06-01 SBI6409 IKT → LED Jun 1, 06:20 UTCJun 2, 04:10 UTC21h 50m
2026-06-01 SBI6409 IKT → LED Jun 1, 05:45 UTCJun 2, 04:10 UTC22h 25m
2026-05-31 SBI6409 IKT → LED May 31, 22:05 UTCJun 1, 13:50 UTC15h 45m
2026-05-29 SBI5266 GDX → OVB May 29, 14:35 UTCMay 30, 01:45 UTC11h 10m
2026-05-28 SBI2502 OVB → DME May 28, 23:20 UTCMay 29, 06:10 UTC6h 50m
2026-05-27 SBI5212 BQS → OVB May 27, 20:05 UTCMay 28, 05:05 UTC9h 0m
2026-05-27 SBI5105 OVB → AER May 27, 12:00 UTCMay 27, 12:20 UTC20m
2026-05-27 SBI5266 GDX → OVB May 27, 01:05 UTCMay 27, 01:39 UTC35m
2026-05-25 SBI5284 PWE → OVB May 25, 22:00 UTCMay 26, 11:34 UTC13h 35m
2026-05-24 SBI5006 LED → OVB May 24, 12:50 UTCMay 24, 16:25 UTC3h 35m
2026-05-24 SBI5005 OVB → LED May 24, 11:15 UTCMay 24, 11:35 UTC20m
2026-05-24 SBI5005 OVB → LED May 24, 07:20 UTCMay 24, 09:50 UTC2h 30m
2026-05-23 SBI5212 BQS → OVB May 23, 20:10 UTCMay 24, 05:10 UTC9h 0m
2026-05-22 SBI5204 VVO → OVB May 22, 16:20 UTCMay 23, 04:20 UTC11h 59m
2026-05-22 SBI5046 UFA → OVB May 22, 08:55 UTCMay 22, 12:50 UTC3h 55m
2026-05-21 SBI5258 UUS → OVB May 21, 16:25 UTCMay 22, 04:25 UTC12h 0m
2026-05-21 SBI5046 UFA → OVB May 21, 09:15 UTCMay 21, 11:35 UTC2h 20m
2026-05-20 SBI5212 BQS → OVB May 20, 19:40 UTCMay 21, 05:20 UTC9h 40m
2026-05-20 SBI5151 OVB → MCX May 20, 10:40 UTCMay 20, 11:05 UTC25m
2026-05-19 SBI5204 VVO → OVB May 19, 17:05 UTCMay 20, 04:35 UTC11h 30m
2026-05-19 SBI5204 VVO → OVB May 19, 08:20 UTCMay 20, 04:35 UTC20h 15m
2026-05-19 SBI5127 OVB → MRV May 19, 07:50 UTCMay 20, 04:35 UTC20h 45m
2026-05-19 SBI5127 OVB → MRV May 19, 02:05 UTCMay 19, 17:20 UTC15h 15m
2026-05-18 SBI5127 OVB → MRV May 18, 15:20 UTCMay 19, 08:40 UTC17h 19m
2026-05-18 SBI5105 OVB → AER May 18, 10:25 UTCMay 19, 08:40 UTC22h 14m
2026-05-16 SBI5066 KGD → OVB May 16, 15:50 UTCMay 17, 07:55 UTC16h 5m
2026-05-16 SBI5065 OVB → KGD May 16, 05:30 UTCMay 16, 13:35 UTC8h 6m
2026-05-15 SBI5065 OVB → KGD May 15, 17:10 UTCMay 16, 13:35 UTC20h 26m
2026-05-15 SBI5250 PKC → OVB May 15, 07:15 UTCMay 16, 06:06 UTC22h 50m
2026-05-14 SBI5066 KGD → OVB May 14, 07:30 UTCMay 14, 11:55 UTC4h 25m
2026-05-13 SBI5103 OVB → AER May 13, 07:05 UTCMay 13, 08:00 UTC55m
2026-05-11 SBI5250 PKC → OVB May 11, 16:40 UTCMay 12, 05:55 UTC13h 16m
2026-05-11 SBI5066 KGD → OVB May 11, 09:25 UTCMay 12, 05:55 UTC20h 30m

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-73665 page for operator, model, and routing details .

Mode-S 151FC1 frequently asked

What is Mode-S code 151FC1?
151FC1 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73665.
Where is Mode-S 151FC1 registered?
Mode-S code 151FC1 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FC1 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FC1, octal 05217701, decimal 1,384,385.
What flights does 151FC1 operate?
Mode-S 151FC1 has broadcast 20 distinct callsigns, including SBI6409, SBI5204, SBI5212, SBI6410, SBI5250.