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 Jul 26, 20:45 UTC
Flights observed
241
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 20:45 UTC

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) 16 2026-06-12
SBI3022 - 14 2026-07-16
SBI2572 S7 Airlines (Siberia Airlines) 12 2026-07-24
SBI3745 - 11 2026-06-28
SBI2582 S7 Airlines (Siberia Airlines) 11 2026-07-23
SBI3017 S7 Airlines (Siberia Airlines) 10 2026-07-20
SBI3034 S7 Airlines (Siberia Airlines) 9 2026-05-24
SBI3746 S7 Airlines (Siberia Airlines) 8 2026-06-28
SBI3032 S7 Airlines (Siberia Airlines) 8 2026-07-24
SBI2514 S7 Airlines (Siberia Airlines) 7 2026-06-02
SBI1214 - 7 2026-07-20
SBI3749 - 6 2026-07-10
SBI2602 S7 Airlines (Siberia Airlines) 6 2026-07-22
SBI1213 - 6 2026-07-20
SBI3750 S7 Airlines (Siberia Airlines) 5 2026-07-11
SBI6311 S7 Airlines (Siberia Airlines) 4 2026-05-18
SBI5304 S7 Airlines (Siberia Airlines) 4 2026-07-25
SBI3021 S7 Airlines (Siberia Airlines) 4 2026-05-27
SBI2606 S7 Airlines (Siberia Airlines) 4 2026-06-10
SBI1007 S7 Airlines (Siberia Airlines) 4 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SBI2629 DME → RGK Jul 26, 20:25 UTCJul 26, 20:45 UTC20m
2026-07-26 SBI2508 OVB → DME Jul 26, 08:05 UTCJul 26, 09:30 UTC1h 25m
2026-07-25 SBI5304 NSK → OVB Jul 25, 22:15 UTCJul 26, 03:45 UTC5h 30m
2026-07-25 SBI2168 MRV → DME Jul 25, 15:10 UTCJul 25, 15:20 UTC10m
2026-07-24 SBI3032 UUD → DME Jul 24, 21:25 UTCJul 25, 03:15 UTC5h 50m
2026-07-24 SBI3032 UUD → DME Jul 24, 05:30 UTCJul 25, 03:15 UTC21h 45m
2026-07-24 SBI2572 NUX → DME Jul 24, 04:10 UTCJul 25, 03:15 UTC23h 5m
2026-07-23 SBI2572 NUX → DME Jul 23, 05:20 UTCJul 24, 04:55 UTC23h 35m
2026-07-23 SBI2582 NSK → DME Jul 23, 03:55 UTCJul 23, 05:30 UTC1h 35m
2026-07-22 SBI2602 BAX → DME Jul 22, 04:20 UTCJul 22, 05:25 UTC1h 5m
2026-07-20 SBI3017 DME → IKT Jul 20, 19:50 UTCJul 20, 20:30 UTC40m
2026-07-20 SBI1214 - Jul 20, 16:00 UTCJul 20, 17:45 UTC1h 45m
2026-07-20 SBI1213 - Jul 20, 08:20 UTCJul 20, 13:50 UTC5h 30m
2026-07-19 SBI5241 OVB → MJZ Jul 19, 21:10 UTCJul 20, 04:00 UTC6h 50m
2026-07-18 SBI5550 IKU → OVB Jul 18, 13:45 UTCJul 19, 03:05 UTC13h 20m
2026-07-17 SBI5727 OVB → XIY Jul 17, 16:59 UTCJul 18, 03:15 UTC10h 16m
2026-07-16 SBI5303 - Jul 16, 22:05 UTCJul 17, 03:45 UTC5h 40m
2026-07-16 SBI3022 - Jul 16, 09:15 UTCJul 16, 17:35 UTC8h 20m
2026-07-15 SBI3022 - Jul 15, 13:35 UTCJul 16, 12:34 UTC23h 0m
2026-07-15 SBI3041 - Jul 15, 00:20 UTCJul 15, 14:05 UTC13h 45m
2026-07-13 SBI1008 LED → DME Jul 13, 17:45 UTCJul 13, 18:05 UTC20m
2026-07-13 SBI2050 AER → DME Jul 13, 11:15 UTCJul 13, 11:25 UTC10m
2026-07-11 SBI3750 IST → DME Jul 11, 14:00 UTCJul 11, 14:30 UTC30m
2026-07-10 SBI3750 IST → DME Jul 10, 14:20 UTCJul 10, 14:50 UTC30m
2026-07-10 SBI3749 - Jul 10, 10:25 UTCJul 10, 12:45 UTC2h 20m
2026-07-09 SBI3749 - Jul 9, 15:20 UTCJul 10, 12:45 UTC21h 25m
2026-07-09 SBI3749 - Jul 9, 14:30 UTCJul 10, 12:45 UTC22h 15m
2026-07-08 SBI2582 - Jul 8, 17:55 UTCJul 9, 13:10 UTC19h 15m
2026-07-07 SBI5303 - Jul 7, 23:10 UTCJul 8, 04:35 UTC5h 25m
2026-07-07 SBI2572 - Jul 7, 06:30 UTCJul 7, 06:55 UTC25m
2026-07-07 SBI2572 - Jul 7, 00:40 UTCJul 7, 05:50 UTC5h 10m
2026-07-06 SBI1196 PEZ → DME Jul 6, 19:40 UTCJul 6, 19:50 UTC10m
2026-07-06 SBI1196 PEZ → DME Jul 6, 18:50 UTCJul 6, 19:05 UTC15m
2026-07-06 SBI1073 DME → KUF Jul 6, 13:20 UTCJul 6, 13:35 UTC15m
2026-07-06 SBI1003 - Jul 6, 08:05 UTCJul 6, 08:30 UTC25m
2026-07-06 SBI2602 - Jul 6, 04:55 UTCJul 6, 05:10 UTC15m
2026-07-05 SBI1007 DME → LED Jul 5, 16:15 UTCJul 5, 16:35 UTC20m
2026-07-05 SBI3276 - Jul 5, 00:40 UTCJul 5, 01:05 UTC25m
2026-07-04 SBI3750 IST → DME Jul 4, 13:40 UTCJul 4, 23:05 UTC9h 25m
2026-07-04 SBI3749 - Jul 4, 11:15 UTCJul 4, 11:35 UTC20m
2026-07-03 SBI3750 IST → DME Jul 3, 14:05 UTCJul 3, 14:35 UTC30m
2026-07-03 SBI3749 - Jul 3, 00:00 UTCJul 3, 12:30 UTC12h 30m
2026-07-02 SBI1007 DME → LED Jul 2, 16:40 UTCJul 2, 17:00 UTC20m
2026-07-01 SBI2581 - Jul 1, 00:45 UTCJul 1, 06:45 UTC6h 0m
2026-06-30 SBI1005 - Jun 30, 14:55 UTCJun 30, 15:15 UTC20m
2026-06-28 SBI3746 AYT → DME Jun 28, 11:59 UTCJun 28, 13:49 UTC1h 50m
2026-06-28 SBI3745 - Jun 28, 08:00 UTCJun 28, 10:15 UTC2h 15m
2026-06-26 SBI2582 - Jun 26, 22:19 UTCJun 27, 05:25 UTC7h 5m
2026-06-26 SBI1195 - Jun 26, 17:35 UTCJun 26, 17:44 UTC10m
2026-06-26 SBI2168 MRV → DME Jun 26, 12:44 UTCJun 26, 12:55 UTC10m

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 Jul 26, 20:45 UTC.
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, SBI2572, SBI3745, SBI2582.