Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

151FC4

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73668 · BOEING 737-800

Hex
151FC4
Octal
05217704
Decimal
1,384,388
Country
RU
Tail
RA-73668
Type
B738
No current signal · last broadcast 9h ago
Flights observed
146
Distinct callsigns
20
Country
RU
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 151FC4.

Country allocation

The ICAO 24-bit address 151FC4 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
SBI5863 - 16 2026-07-10
SBI5864 - 8 2026-07-10
SBI5207 S7 Airlines (Siberia Airlines) 8 2026-07-07
SBI6410 S7 Airlines (Siberia Airlines) 7 2026-05-24
SBI6245 S7 Airlines (Siberia Airlines) 7 2026-06-14
SBI5249 S7 Airlines (Siberia Airlines) 6 2026-07-17
SBI6409 S7 Airlines (Siberia Airlines) 5 2026-05-24
SBI6246 - 5 2026-06-17
SBI6415 - 4 2026-06-20
SBI6327 S7 Airlines (Siberia Airlines) 4 2026-05-22
SBI6311 S7 Airlines (Siberia Airlines) 4 2026-06-20
SBI5890 - 4 2026-07-07
SBI5250 - 4 2026-07-12
SBI5105 S7 Airlines (Siberia Airlines) 4 2026-06-04
SBI5103 S7 Airlines (Siberia Airlines) 4 2026-07-16
SBI5066 - 4 2026-07-14
SBI5889 - 3 2026-07-07
SBI5565 - 3 2026-07-11
SBI5204 - 3 2026-06-16
SBI6262 - 2 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 SBI5249 OVB → PKC Jul 17, 16:29 UTCJul 17, 16:59 UTC30m
2026-07-16 SBI5103 OVB → AER Jul 16, 08:50 UTCJul 16, 10:00 UTC1h 10m
2026-07-15 SBI5731 OVB → PVG Jul 15, 13:55 UTCJul 16, 02:05 UTC12h 10m
2026-07-14 SBI5066 - Jul 14, 16:30 UTCJul 15, 10:05 UTC17h 34m
2026-07-14 SBI5066 - Jul 14, 13:35 UTCJul 15, 10:05 UTC20h 29m
2026-07-14 SBI5066 - Jul 14, 09:20 UTCJul 15, 08:35 UTC23h 14m
2026-07-13 SBI5249 OVB → PKC Jul 13, 16:25 UTCJul 14, 05:45 UTC13h 20m
2026-07-12 SBI5250 - Jul 12, 13:20 UTCJul 13, 07:01 UTC17h 40m
2026-07-12 SBI5250 - Jul 12, 08:10 UTCJul 13, 07:01 UTC22h 50m
2026-07-11 SBI5250 - Jul 11, 16:25 UTCJul 12, 05:45 UTC13h 20m
2026-07-11 SBI5565 - Jul 11, 07:35 UTCJul 11, 13:30 UTC5h 55m
2026-07-10 SBI5224 - Jul 10, 20:10 UTCJul 11, 02:55 UTC6h 45m
2026-07-10 SBI5864 - Jul 10, 13:30 UTCJul 10, 15:10 UTC1h 40m
2026-07-10 SBI5863 - Jul 10, 09:30 UTCJul 10, 12:10 UTC2h 40m
2026-07-09 SBI5241 - Jul 9, 21:25 UTCJul 10, 03:50 UTC6h 25m
2026-07-09 SBI5104 AER → OVB Jul 9, 11:45 UTCJul 9, 12:00 UTC15m
2026-07-09 SBI5103 OVB → AER Jul 9, 09:25 UTCJul 9, 10:00 UTC35m
2026-07-08 SBI5206 - Jul 8, 16:05 UTCJul 9, 03:55 UTC11h 50m
2026-07-08 SBI5234 IKT → OVB Jul 8, 13:35 UTCJul 8, 14:10 UTC35m
2026-07-07 SBI5207 OVB → VVO Jul 7, 19:00 UTCJul 8, 06:45 UTC11h 45m
2026-07-07 SBI5890 - Jul 7, 12:25 UTCJul 7, 12:35 UTC10m
2026-07-07 SBI5890 - Jul 7, 11:05 UTCJul 7, 11:30 UTC25m
2026-07-07 SBI5889 - Jul 7, 08:20 UTCJul 7, 08:55 UTC35m
2026-07-05 SBI5207 OVB → VVO Jul 5, 20:20 UTCJul 6, 08:10 UTC11h 50m
2026-07-04 SBI5249 OVB → PKC Jul 4, 17:30 UTCJul 5, 06:35 UTC13h 5m
2026-07-04 SBI5066 - Jul 4, 11:20 UTCJul 4, 13:35 UTC2h 15m
2026-07-04 SBI5065 - Jul 4, 08:30 UTCJul 4, 09:35 UTC1h 5m
2026-07-02 SBI5211 - Jul 2, 19:35 UTCJul 3, 05:00 UTC9h 25m
2026-07-02 SBI5864 - Jul 2, 11:45 UTCJul 2, 13:35 UTC1h 50m
2026-07-02 SBI5863 - Jul 2, 07:55 UTCJul 2, 09:55 UTC2h 0m
2026-07-01 SBI5732 - Jul 1, 14:05 UTCJul 2, 02:15 UTC12h 10m
2026-06-30 SBI5249 OVB → PKC Jun 30, 18:30 UTCJul 1, 07:55 UTC13h 25m
2026-06-30 SBI5864 - Jun 30, 11:25 UTCJun 30, 13:15 UTC1h 50m
2026-06-29 SBI5863 - Jun 29, 14:50 UTCJun 30, 09:40 UTC18h 51m
2026-06-27 SBI5863 - Jun 27, 08:25 UTCJun 27, 13:40 UTC5h 15m
2026-06-25 SBI5065 - Jun 25, 02:35 UTCJun 25, 02:54 UTC20m
2026-06-23 SBI5259 OVB → UUS Jun 23, 14:49 UTCJun 24, 02:15 UTC11h 25m
2026-06-22 SBI5249 OVB → PKC Jun 22, 16:20 UTCJun 23, 05:29 UTC13h 10m
2026-06-22 SBI5232 - Jun 22, 03:14 UTCJun 22, 03:45 UTC30m
2026-06-20 SBI6415 - Jun 20, 21:44 UTCJun 21, 10:49 UTC13h 5m
2026-06-20 SBI6311 IKT → PKX Jun 20, 19:40 UTCJun 20, 19:55 UTC15m
2026-06-19 SBI6419 - Jun 19, 21:44 UTCJun 20, 12:54 UTC15h 10m
2026-06-19 SBI6311 IKT → PKX Jun 19, 19:39 UTCJun 19, 19:49 UTC10m
2026-06-17 SBI6246 - Jun 17, 19:05 UTCJun 18, 07:40 UTC12h 35m
2026-06-17 SBI6246 - Jun 17, 07:00 UTCJun 18, 00:25 UTC17h 25m
2026-06-16 SBI5249 OVB → PKC Jun 16, 16:30 UTCJun 17, 07:00 UTC14h 31m
2026-06-16 SBI5316 - Jun 16, 14:15 UTCJun 16, 14:50 UTC35m
2026-06-16 SBI5315 - Jun 16, 12:10 UTCJun 16, 12:45 UTC35m
2026-06-16 SBI5204 - Jun 16, 04:05 UTCJun 16, 04:20 UTC15m
2026-06-14 SBI6245 VVO → PVG Jun 14, 06:15 UTCJun 15, 00:24 UTC18h 9m

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-73668 page for operator, model, and routing details .

Mode-S 151FC4 frequently asked

What is Mode-S code 151FC4?
151FC4 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73668.
Where is Mode-S 151FC4 registered?
Mode-S code 151FC4 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FC4 broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FC4, octal 05217704, decimal 1,384,388.
What flights does 151FC4 operate?
Mode-S 151FC4 has broadcast 20 distinct callsigns, including SBI5863, SBI5864, SBI5207, SBI6410, SBI6245.