Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

151FD1

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73681 · AIRBUS A-319

Hex
151FD1
Octal
05217721
Decimal
1,384,401
Country
RU
Tail
RA-73681
Type
A319
No current signal · last broadcast 36m ago
Flights observed
412
Distinct callsigns
20
Country
RU
Last broadcast
36m ago

Last known position

Most recent position reported by Mode-S 151FD1.

Country allocation

The ICAO 24-bit address 151FD1 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
SBI2626 - 65 2026-07-14
SBI2625 - 54 2026-07-13
SBI1055 S7 Airlines (Siberia Airlines) 40 2026-07-13
SBI2616 - 27 2026-07-12
SBI1056 S7 Airlines (Siberia Airlines) 27 2026-07-13
SBI2145 - 25 2026-06-19
SBI2615 - 23 2026-07-11
SBI2146 S7 Airlines (Siberia Airlines) 16 2026-06-27
SBI1006 S7 Airlines (Siberia Airlines) 16 2026-06-14
SBI1005 - 16 2026-06-14
SBI1212 - 13 2026-07-13
SBI1211 - 13 2026-07-14
SBI2594 - 12 2026-07-07
SBI2157 S7 Airlines (Siberia Airlines) 10 2026-06-28
SBI2593 - 9 2026-07-06
SBI1137 S7 Airlines (Siberia Airlines) 7 2026-07-12
SBI1136 S7 Airlines (Siberia Airlines) 6 2026-07-09
SBI1135 - 6 2026-07-11
SBI2158 S7 Airlines (Siberia Airlines) 5 2026-06-12
SBI1138 S7 Airlines (Siberia Airlines) 5 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SBI1211 - Jul 14, 08:10 UTCJul 14, 10:15 UTC2h 5m
2026-07-14 SBI2626 - Jul 14, 05:40 UTCJul 14, 06:05 UTC25m
2026-07-14 SBI2626 - Jul 14, 01:55 UTCJul 14, 04:10 UTC2h 15m
2026-07-13 SBI2625 - Jul 13, 20:40 UTCJul 14, 00:35 UTC3h 55m
2026-07-13 SBI1056 KZN → DME Jul 13, 18:25 UTCJul 13, 19:05 UTC40m
2026-07-13 SBI1055 DME → KZN Jul 13, 15:35 UTCJul 13, 16:05 UTC30m
2026-07-13 SBI1212 - Jul 13, 12:00 UTCJul 13, 14:10 UTC2h 10m
2026-07-13 SBI1211 - Jul 13, 08:30 UTCJul 13, 10:45 UTC2h 15m
2026-07-13 SBI2626 - Jul 13, 06:45 UTCJul 13, 07:15 UTC30m
2026-07-13 SBI2626 - Jul 13, 03:01 UTCJul 13, 05:20 UTC2h 20m
2026-07-12 SBI2625 - Jul 12, 21:50 UTCJul 13, 01:50 UTC4h 0m
2026-07-12 SBI1138 UFA → DME Jul 12, 19:40 UTCJul 12, 20:10 UTC30m
2026-07-12 SBI1137 DME → UFA Jul 12, 15:45 UTCJul 12, 16:01 UTC15m
2026-07-12 SBI1212 - Jul 12, 11:30 UTCJul 12, 14:05 UTC2h 35m
2026-07-12 SBI1211 - Jul 12, 08:15 UTCJul 12, 10:20 UTC2h 5m
2026-07-12 SBI2616 - Jul 12, 05:05 UTCJul 12, 05:40 UTC35m
2026-07-12 SBI2616 - Jul 12, 01:45 UTCJul 12, 02:05 UTC20m
2026-07-11 SBI2615 - Jul 11, 19:55 UTCJul 11, 23:35 UTC3h 40m
2026-07-11 SBI1138 UFA → DME Jul 11, 17:40 UTCJul 11, 18:15 UTC35m
2026-07-11 SBI1137 DME → UFA Jul 11, 13:40 UTCJul 11, 14:15 UTC35m
2026-07-11 SBI1135 - Jul 11, 07:55 UTCJul 11, 12:15 UTC4h 20m
2026-07-11 SBI2626 - Jul 11, 02:10 UTCJul 11, 06:20 UTC4h 10m
2026-07-10 SBI2625 - Jul 10, 20:45 UTCJul 11, 00:35 UTC3h 50m
2026-07-10 SBI1055 DME → KZN Jul 10, 15:55 UTCJul 10, 19:25 UTC3h 30m
2026-07-10 SBI1212 - Jul 10, 14:00 UTCJul 10, 14:15 UTC15m
2026-07-10 SBI1212 - Jul 10, 11:40 UTCJul 10, 13:20 UTC1h 40m
2026-07-10 SBI1211 - Jul 10, 08:05 UTCJul 10, 10:10 UTC2h 5m
2026-07-10 SBI2626 - Jul 10, 02:00 UTCJul 10, 06:10 UTC4h 10m
2026-07-09 SBI2625 - Jul 9, 20:50 UTCJul 10, 00:45 UTC3h 55m
2026-07-09 SBI1056 KZN → DME Jul 9, 18:45 UTCJul 9, 19:15 UTC30m
2026-07-09 SBI1055 DME → KZN Jul 9, 15:40 UTCJul 9, 16:20 UTC40m
2026-07-09 SBI1136 UFA → DME Jul 9, 13:10 UTCJul 9, 13:45 UTC35m
2026-07-09 SBI1135 - Jul 9, 07:45 UTCJul 9, 08:25 UTC40m
2026-07-09 SBI2616 - Jul 9, 00:55 UTCJul 9, 04:45 UTC3h 50m
2026-07-08 SBI2615 - Jul 8, 19:50 UTCJul 8, 23:30 UTC3h 40m
2026-07-08 SBI1212 - Jul 8, 16:05 UTCJul 8, 18:35 UTC2h 30m
2026-07-08 SBI1211 - Jul 8, 12:20 UTCJul 8, 14:15 UTC1h 55m
2026-07-08 SBI2626 - Jul 8, 06:00 UTCJul 8, 06:10 UTC10m
2026-07-08 SBI2626 - Jul 8, 02:00 UTCJul 8, 04:10 UTC2h 10m
2026-07-07 SBI2625 - Jul 7, 22:30 UTCJul 8, 00:45 UTC2h 15m
2026-07-07 SBI2625 - Jul 7, 20:55 UTCJul 7, 21:05 UTC10m
2026-07-07 SBI1055 DME → KZN Jul 7, 15:50 UTCJul 7, 19:05 UTC3h 15m
2026-07-07 SBI2594 - Jul 7, 05:00 UTCJul 7, 05:20 UTC20m
2026-07-07 SBI2594 - Jul 7, 00:40 UTCJul 7, 02:55 UTC2h 15m
2026-07-06 SBI2593 - Jul 6, 18:55 UTCJul 6, 23:00 UTC4h 5m
2026-07-06 SBI2159 - Jul 6, 07:30 UTCJul 6, 13:30 UTC6h 0m
2026-07-06 SBI2616 - Jul 6, 04:35 UTCJul 6, 04:45 UTC10m
2026-07-06 SBI2616 - Jul 6, 00:50 UTCJul 6, 02:45 UTC1h 55m
2026-07-05 SBI2615 - Jul 5, 19:50 UTCJul 5, 23:30 UTC3h 40m
2026-07-05 SBI1136 UFA → DME Jul 5, 12:55 UTCJul 5, 13:15 UTC20m

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-73681 page for operator, model, and routing details .

Mode-S 151FD1 frequently asked

What is Mode-S code 151FD1?
151FD1 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73681.
Where is Mode-S 151FD1 registered?
Mode-S code 151FD1 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FD1 broadcasting right now?
No active broadcast right now. Last signal was 36m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FD1, octal 05217721, decimal 1,384,401.
What flights does 151FD1 operate?
Mode-S 151FD1 has broadcast 20 distinct callsigns, including SBI2626, SBI2625, SBI1055, SBI2616, SBI1056.