Apparatus

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sensors Mode-S transponder

151ECD

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73421 · AIRBUS A-320

Hex
151ECD
Octal
05217315
Decimal
1,384,141
Country
RU
Tail
RA-73421
Type
A320
No current signal · last broadcast 1h ago
Flights observed
138
Distinct callsigns
20
Country
RU
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 151ECD.

Country allocation

The ICAO 24-bit address 151ECD 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
SBI3018 S7 Airlines (Siberia Airlines) 13 2026-05-23
SBI3022 S7 Airlines (Siberia Airlines) 12 2026-05-27
SBI3034 S7 Airlines (Siberia Airlines) 9 2026-05-24
SBI3017 S7 Airlines (Siberia Airlines) 8 2026-05-29
SBI2572 S7 Airlines (Siberia Airlines) 8 2026-05-24
SBI2582 S7 Airlines (Siberia Airlines) 7 2026-04-28
SBI3032 S7 Airlines (Siberia Airlines) 6 2026-05-13
SBI2514 S7 Airlines (Siberia Airlines) 5 2026-05-24
SBI1214 S7 Airlines (Siberia Airlines) 5 2026-05-25
SBI6311 S7 Airlines (Siberia Airlines) 4 2026-05-18
SBI3745 S7 Airlines (Siberia Airlines) 4 2026-05-29
SBI3021 S7 Airlines (Siberia Airlines) 4 2026-05-27
SBI2602 S7 Airlines (Siberia Airlines) 4 2026-05-15
SBI1213 S7 Airlines (Siberia Airlines) 4 2026-05-03
SBI5304 S7 Airlines (Siberia Airlines) 3 2026-05-06
SBI3746 S7 Airlines (Siberia Airlines) 3 2026-05-29
SBI3033 S7 Airlines (Siberia Airlines) 3 2026-05-26
SBI6312 S7 Airlines (Siberia Airlines) 2 2026-05-04
SBI5592 S7 Airlines (Siberia Airlines) 2 2026-05-07
SBI5591 S7 Airlines (Siberia Airlines) 2 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SBI3017 DME → IKT May 29, 18:55 UTCMay 30, 03:15 UTC8h 20m
2026-05-29 SBI3746 AYT → DME May 29, 12:05 UTCMay 29, 13:50 UTC1h 45m
2026-05-29 SBI3745 DME → AYT May 29, 10:25 UTCMay 29, 10:45 UTC20m
2026-05-29 SBI3745 DME → AYT May 29, 02:05 UTCMay 29, 09:40 UTC7h 35m
2026-05-28 SBI2157 DME → MCX May 28, 10:30 UTCMay 28, 10:45 UTC15m
2026-05-27 SBI3022 IKT → DME May 27, 13:20 UTCMay 28, 08:10 UTC18h 50m
2026-05-27 SBI3022 IKT → DME May 27, 11:20 UTCMay 28, 08:10 UTC20h 50m
2026-05-27 SBI3021 DME → IKT May 27, 10:05 UTCMay 28, 08:10 UTC22h 5m
2026-05-26 SBI3033 DME → UUD May 26, 15:49 UTCMay 27, 07:25 UTC15h 36m
2026-05-26 SBI2505 DME → OVB May 26, 09:15 UTCMay 26, 12:14 UTC3h 0m
2026-05-25 SBI1214 KGD → DME May 25, 15:40 UTCMay 26, 05:34 UTC13h 54m
2026-05-24 SBI3034 UUD → DME May 24, 20:25 UTCMay 25, 13:55 UTC17h 30m
2026-05-24 SBI2514 OVB → DME May 24, 17:25 UTCMay 24, 17:45 UTC20m
2026-05-24 SBI2572 NUX → DME May 24, 00:20 UTCMay 24, 05:50 UTC5h 30m
2026-05-23 SBI3018 IKT → DME May 23, 03:20 UTCMay 24, 01:05 UTC21h 46m
2026-05-22 SBI3018 IKT → DME May 22, 21:55 UTCMay 23, 04:05 UTC6h 10m
2026-05-22 SBI3017 DME → IKT May 22, 03:20 UTCMay 22, 22:30 UTC19h 10m
2026-05-22 SBI3018 IKT → DME May 22, 03:05 UTCMay 22, 22:30 UTC19h 25m
2026-05-21 SBI3017 DME → IKT May 21, 22:20 UTCMay 22, 03:45 UTC5h 25m
2026-05-21 SBI3017 DME → IKT May 21, 07:20 UTCMay 22, 03:45 UTC20h 25m
2026-05-21 SBI3034 UUD → DME May 21, 06:50 UTCMay 22, 03:45 UTC20h 55m
2026-05-21 SBI3034 UUD → DME May 21, 04:10 UTCMay 22, 03:15 UTC23h 5m
2026-05-20 SBI3034 UUD → DME May 20, 23:20 UTCMay 21, 23:00 UTC23h 40m
2026-05-20 SBI3034 UUD → DME May 20, 14:10 UTCMay 21, 07:40 UTC17h 30m
2026-05-20 SBI3034 UUD → DME May 20, 10:05 UTCMay 21, 07:40 UTC21h 35m
2026-05-20 SBI2514 OVB → DME May 20, 06:10 UTCMay 21, 04:55 UTC22h 45m
2026-05-20 SBI2514 OVB → DME May 20, 03:20 UTCMay 20, 23:30 UTC20h 11m
2026-05-20 SBI3018 IKT → DME May 20, 02:50 UTCMay 20, 23:30 UTC20h 41m
2026-05-19 SBI3018 IKT → DME May 19, 22:05 UTCMay 20, 21:05 UTC23h 1m
2026-05-19 SBI3018 IKT → DME May 19, 07:20 UTCMay 20, 06:15 UTC22h 56m
2026-05-19 SBI3018 IKT → DME May 19, 05:20 UTCMay 20, 03:40 UTC22h 20m
2026-05-19 SBI3022 IKT → DME May 19, 04:40 UTCMay 20, 03:15 UTC22h 35m
2026-05-18 SBI3022 IKT → DME May 18, 21:55 UTCMay 19, 07:55 UTC10h 0m
2026-05-18 SBI6311 IKT → PKX May 18, 19:45 UTCMay 18, 19:55 UTC10m
2026-05-18 SBI3021 DME → IKT May 18, 11:15 UTCMay 18, 14:15 UTC3h 0m
2026-05-17 SBI2572 NUX → DME May 17, 05:30 UTCMay 17, 07:05 UTC1h 35m
2026-05-16 SBI1074 KUF → DME May 16, 16:05 UTCMay 16, 16:15 UTC10m
2026-05-15 SBI5303 OVB → NSK May 15, 22:15 UTCMay 16, 12:45 UTC14h 31m
2026-05-15 SBI2602 BAX → DME May 15, 03:45 UTCMay 15, 20:05 UTC16h 19m
2026-05-14 SBI2602 BAX → DME May 14, 21:20 UTCMay 15, 20:05 UTC22h 44m
2026-05-14 SBI3746 AYT → DME May 14, 12:25 UTCMay 15, 04:30 UTC16h 5m
2026-05-14 SBI3745 DME → AYT May 14, 10:31 UTCMay 14, 10:55 UTC25m
2026-05-13 SBI3745 DME → AYT May 13, 22:30 UTCMay 14, 09:40 UTC11h 10m
2026-05-13 SBI2565 DME → OMS May 13, 03:20 UTCMay 13, 22:40 UTC19h 20m
2026-05-13 SBI3032 UUD → DME May 13, 01:20 UTCMay 13, 22:40 UTC21h 20m
2026-05-13 SBI3032 UUD → DME May 13, 01:05 UTCMay 13, 22:40 UTC21h 35m
2026-05-12 SBI2572 NUX → DME May 12, 04:25 UTCMay 12, 23:15 UTC18h 50m
2026-05-11 SBI3032 UUD → DME May 11, 00:54 UTCMay 11, 17:25 UTC16h 31m
2026-05-10 SBI3031 DME → UUD May 10, 19:30 UTCMay 10, 21:59 UTC2h 30m
2026-05-09 SBI3041 DME → BTK May 9, 21:09 UTCMay 10, 07:40 UTC10h 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-73421 page for operator, model, and routing details .

Mode-S 151ECD frequently asked

What is Mode-S code 151ECD?
151ECD is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73421.
Where is Mode-S 151ECD registered?
Mode-S code 151ECD is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151ECD broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151ECD, octal 05217315, decimal 1,384,141.
What flights does 151ECD operate?
Mode-S 151ECD has broadcast 20 distinct callsigns, including SBI3018, SBI3022, SBI3034, SBI3017, SBI2572.