Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

151DA3

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73123 · BOEING 737-800

Hex
151DA3
Octal
05216643
Decimal
1,383,843
Country
RU
Tail
RA-73123
Type
B738
No current signal · last broadcast 2d ago
Flights observed
152
Distinct callsigns
20
Country
RU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 151DA3.

Country allocation

The ICAO 24-bit address 151DA3 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
AFL401 - 7 2026-07-01
AFL400 - 7 2026-06-30
AFL1487 Aeroflot Russian Airlines 7 2026-06-04
AFL1563 Aeroflot Russian Airlines 6 2026-06-13
AFL2139 - 5 2026-07-08
AFL2126 - 5 2026-07-02
AFL1863 - 5 2026-07-08
AFL521 - 4 2026-07-05
AFL520 - 4 2026-07-05
AFL2138 - 4 2026-07-06
AFL2127 Aeroflot Russian Airlines 4 2026-07-02
AFL2120 Aeroflot Russian Airlines 4 2026-05-28
AFL1862 - 4 2026-07-08
AFL1443 - 4 2026-07-09
AFL431 - 3 2026-04-17
AFL2121 Aeroflot Russian Airlines 3 2026-05-28
AFL1562 Aeroflot Russian Airlines 3 2026-05-01
AFL1445 Aeroflot Russian Airlines 3 2026-06-24
AFL1442 Aeroflot Russian Airlines 3 2026-05-05
AFL1405 Aeroflot Russian Airlines 3 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 AFL527 - Jul 12, 16:25 UTCJul 12, 17:20 UTC55m
2026-07-12 AFL1441 - Jul 12, 02:35 UTCJul 12, 14:40 UTC12h 5m
2026-07-11 AFL1440 SVO → SVO Jul 11, 14:20 UTCJul 11, 14:45 UTC25m
2026-07-11 AFL1094 SVO → SVO Jul 11, 06:50 UTCJul 11, 07:10 UTC20m
2026-07-09 AFL1443 - Jul 9, 22:05 UTCJul 10, 06:45 UTC8h 40m
2026-07-08 AFL1863 - Jul 8, 17:10 UTCJul 8, 17:35 UTC25m
2026-07-08 AFL1862 - Jul 8, 15:15 UTCJul 8, 15:25 UTC10m
2026-07-08 AFL2139 - Jul 8, 06:20 UTCJul 8, 06:50 UTC30m
2026-07-06 AFL1863 - Jul 6, 17:30 UTCJul 6, 18:00 UTC30m
2026-07-06 AFL1862 - Jul 6, 15:30 UTCJul 6, 15:40 UTC10m
2026-07-06 AFL2139 - Jul 6, 06:25 UTCJul 6, 06:55 UTC30m
2026-07-06 AFL2138 - Jul 6, 01:20 UTCJul 6, 01:40 UTC20m
2026-07-05 AFL2138 - Jul 5, 20:55 UTCJul 5, 21:30 UTC35m
2026-07-05 AFL521 - Jul 5, 12:30 UTCJul 5, 16:00 UTC3h 30m
2026-07-05 AFL520 - Jul 5, 09:40 UTCJul 5, 10:15 UTC35m
2026-07-05 AFL520 SVO → SVO Jul 5, 04:20 UTCJul 5, 04:50 UTC30m
2026-07-04 AFL527 - Jul 4, 16:05 UTCJul 4, 16:30 UTC25m
2026-07-04 AFL526 - Jul 4, 13:30 UTCJul 4, 14:00 UTC30m
2026-07-04 AFL526 SVO → SVO Jul 4, 08:20 UTCJul 4, 09:10 UTC50m
2026-07-02 AFL2127 AYT → SVO Jul 2, 14:20 UTCJul 2, 16:10 UTC1h 50m
2026-07-02 AFL2126 - Jul 2, 03:00 UTCJul 2, 12:25 UTC9h 25m
2026-07-01 AFL401 - Jul 1, 14:40 UTCJul 1, 17:15 UTC2h 35m
2026-06-30 AFL400 - Jun 30, 17:30 UTCJul 1, 12:35 UTC19h 5m
2026-06-29 AFL1443 - Jun 29, 22:35 UTCJun 30, 15:50 UTC17h 16m
2026-06-28 AFL2125 - Jun 28, 13:29 UTCJun 28, 15:14 UTC1h 45m
2026-06-27 AFL2124 - Jun 27, 18:49 UTCJun 28, 10:55 UTC16h 5m
2026-06-27 AFL1476 SVO → UUD Jun 27, 15:19 UTCJun 27, 15:45 UTC25m
2026-06-26 AFL521 DXB → SVO Jun 26, 12:29 UTCJun 26, 13:24 UTC55m
2026-06-26 AFL520 SVO → DXB Jun 26, 09:35 UTCJun 26, 10:05 UTC30m
2026-06-24 AFL1445 IKT → SVO Jun 24, 08:30 UTCJun 24, 16:29 UTC8h 0m
2026-06-23 AFL2127 AYT → SVO Jun 23, 14:49 UTCJun 24, 13:54 UTC23h 5m
2026-06-23 AFL2127 AYT → SVO Jun 23, 13:59 UTCJun 24, 09:09 UTC19h 10m
2026-06-23 AFL2126 SVO → AYT Jun 23, 12:05 UTCJun 23, 12:35 UTC30m
2026-06-23 AFL2126 SVO → AYT Jun 23, 07:55 UTCJun 23, 08:45 UTC50m
2026-06-22 AFL1869 - Jun 22, 20:34 UTCJun 22, 21:30 UTC55m
2026-06-22 AFL2139 - Jun 22, 06:19 UTCJun 22, 06:54 UTC35m
2026-06-22 AFL2138 - Jun 22, 01:05 UTCJun 22, 01:29 UTC25m
2026-06-19 AFL2169 DLM → SVO Jun 19, 18:14 UTCJun 19, 20:04 UTC1h 50m
2026-06-18 AFL2168 SVO → DLM Jun 18, 21:05 UTCJun 19, 16:34 UTC19h 29m
2026-06-17 AFL1466 SVO → SVX Jun 17, 23:35 UTCJun 17, 23:55 UTC20m
2026-06-17 AFL1186 SVO → VOG Jun 17, 14:35 UTCJun 17, 15:05 UTC30m
2026-06-15 AFL401 CAI → SVO Jun 15, 15:30 UTCJun 15, 16:35 UTC1h 5m
2026-06-15 AFL400 SVO → CAI Jun 15, 08:40 UTCJun 15, 13:25 UTC4h 45m
2026-06-14 AFL400 SVO → CAI Jun 14, 16:50 UTCJun 15, 13:25 UTC20h 35m
2026-06-14 AFL401 CAI → SVO Jun 14, 15:50 UTCJun 15, 13:25 UTC21h 35m
2026-06-13 AFL400 SVO → CAI Jun 13, 19:30 UTCJun 14, 13:40 UTC18h 10m
2026-06-13 AFL1563 IKT → SVO Jun 13, 02:25 UTCJun 13, 07:55 UTC5h 29m
2026-06-11 AFL521 DXB → SVO Jun 11, 16:00 UTCJun 11, 16:55 UTC55m
2026-06-10 AFL1175 ASF → SVO Jun 10, 20:20 UTCJun 10, 20:50 UTC30m
2026-06-10 AFL1175 ASF → SVO Jun 10, 17:40 UTCJun 10, 18:00 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-73123 page for operator, model, and routing details .

Mode-S 151DA3 frequently asked

What is Mode-S code 151DA3?
151DA3 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73123.
Where is Mode-S 151DA3 registered?
Mode-S code 151DA3 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DA3 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DA3, octal 05216643, decimal 1,383,843.
What flights does 151DA3 operate?
Mode-S 151DA3 has broadcast 20 distinct callsigns, including AFL401, AFL400, AFL1487, AFL1563, AFL2139.