Apparatus

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sensors Mode-S transponder

151DA9

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73129 · BOEING 737-800

Hex
151DA9
Octal
05216651
Decimal
1,383,849
Country
RU
Tail
RA-73129
Type
B738
No current signal · last broadcast 10h ago
Flights observed
190
Distinct callsigns
20
Country
RU
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 151DA9.

Country allocation

The ICAO 24-bit address 151DA9 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
AFL905 Aeroflot Russian Airlines 12 2026-06-14
AFL904 Aeroflot Russian Airlines 10 2026-06-12
AFL900 Aeroflot Russian Airlines 10 2026-06-10
AFL2149 - 10 2026-07-03
AFL427 Aeroflot Russian Airlines 9 2026-05-16
AFL901 Aeroflot Russian Airlines 8 2026-06-13
AFL2122 - 8 2026-07-12
AFL2148 - 7 2026-07-03
AFL2124 - 7 2026-07-08
AFL2123 - 7 2026-07-12
AFL2125 - 6 2026-07-11
AFL803 - 5 2026-07-10
AFL428 - 5 2026-06-28
AFL423 - 5 2026-06-19
AFL2126 - 5 2026-07-13
AFL676 - 4 2026-06-30
AFL2121 Aeroflot Russian Airlines 4 2026-06-22
AFL2120 Aeroflot Russian Airlines 4 2026-06-22
AFL802 - 3 2026-06-27
AFL429 - 3 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AFL2127 - Jul 13, 14:30 UTCJul 13, 16:10 UTC1h 40m
2026-07-13 AFL2126 - Jul 13, 12:10 UTCJul 13, 12:50 UTC40m
2026-07-13 AFL2126 - Jul 13, 03:15 UTCJul 13, 11:25 UTC8h 10m
2026-07-12 AFL2123 - Jul 12, 15:20 UTCJul 12, 15:50 UTC30m
2026-07-12 AFL2122 - Jul 12, 13:15 UTCJul 12, 13:45 UTC30m
2026-07-11 AFL2125 - Jul 11, 13:40 UTCJul 11, 14:05 UTC25m
2026-07-10 AFL803 - Jul 10, 17:30 UTCJul 11, 11:25 UTC17h 55m
2026-07-10 AFL677 - Jul 10, 07:50 UTCJul 10, 09:00 UTC1h 10m
2026-07-09 AFL1563 - Jul 9, 02:10 UTCJul 9, 10:30 UTC8h 20m
2026-07-08 AFL2125 - Jul 8, 13:15 UTCJul 8, 15:00 UTC1h 45m
2026-07-08 AFL2124 - Jul 8, 11:35 UTCJul 8, 12:00 UTC25m
2026-07-06 AFL2129 - Jul 6, 04:45 UTCJul 6, 06:30 UTC1h 45m
2026-07-05 AFL2123 - Jul 5, 14:50 UTCJul 5, 16:45 UTC1h 55m
2026-07-04 AFL2122 - Jul 4, 18:20 UTCJul 5, 13:10 UTC18h 50m
2026-07-04 AFL2157 - Jul 4, 16:45 UTCJul 5, 13:10 UTC20h 25m
2026-07-04 AFL2156 - Jul 4, 13:35 UTCJul 4, 15:30 UTC1h 55m
2026-07-03 AFL2156 - Jul 3, 19:05 UTCJul 4, 15:30 UTC20h 25m
2026-07-03 AFL2149 - Jul 3, 06:10 UTCJul 3, 07:55 UTC1h 45m
2026-07-03 AFL2148 - Jul 3, 03:35 UTCJul 3, 04:00 UTC25m
2026-07-02 AFL2149 - Jul 2, 06:35 UTCJul 2, 06:55 UTC20m
2026-07-01 AFL2159 - Jul 1, 14:30 UTCJul 2, 04:00 UTC13h 30m
2026-07-01 AFL2158 - Jul 1, 12:00 UTCJul 1, 12:40 UTC40m
2026-07-01 AFL2158 SVO → SVO Jul 1, 08:15 UTCJul 1, 08:35 UTC20m
2026-06-30 AFL803 - Jun 30, 17:15 UTCJun 30, 19:05 UTC1h 50m
2026-06-30 AFL676 - Jun 30, 15:15 UTCJun 30, 15:50 UTC35m
2026-06-29 AFL429 - Jun 29, 08:19 UTCJun 30, 03:35 UTC19h 16m
2026-06-29 AFL429 - Jun 29, 07:09 UTCJun 30, 03:35 UTC20h 26m
2026-06-28 AFL428 - Jun 28, 15:55 UTCJun 29, 05:00 UTC13h 5m
2026-06-28 AFL2160 SVO → AYT Jun 28, 12:25 UTCJun 28, 14:04 UTC1h 40m
2026-06-28 AFL1549 - Jun 28, 02:34 UTCJun 28, 02:44 UTC10m
2026-06-27 AFL803 SVO → KZN Jun 27, 14:14 UTCJun 27, 16:00 UTC1h 45m
2026-06-27 AFL676 - Jun 27, 06:59 UTCJun 27, 12:39 UTC5h 40m
2026-06-27 AFL802 - Jun 27, 04:19 UTCJun 27, 04:54 UTC35m
2026-06-26 AFL2149 - Jun 26, 06:29 UTCJun 27, 04:54 UTC22h 25m
2026-06-26 AFL2149 - Jun 26, 05:39 UTCJun 26, 07:30 UTC1h 50m
2026-06-25 AFL2149 - Jun 25, 08:40 UTCJun 26, 03:54 UTC19h 15m
2026-06-25 AFL2148 - Jun 25, 06:30 UTCJun 25, 06:50 UTC20m
2026-06-23 AFL2161 AYT → SVO Jun 23, 15:59 UTCJun 23, 18:20 UTC2h 20m
2026-06-23 AFL2160 SVO → AYT Jun 23, 01:15 UTCJun 23, 13:59 UTC12h 45m
2026-06-22 AFL2132 - Jun 22, 22:34 UTCJun 22, 22:54 UTC20m
2026-06-22 AFL2121 BJV → SVO Jun 22, 11:24 UTCJun 22, 12:10 UTC45m
2026-06-22 AFL2120 SVO → BJV Jun 22, 09:04 UTCJun 22, 09:45 UTC40m
2026-06-22 AFL2120 SVO → BJV Jun 22, 04:59 UTCJun 22, 05:24 UTC25m
2026-06-21 AFL1200 SVO → SVO Jun 21, 05:54 UTCJun 21, 06:14 UTC20m
2026-06-20 AFL2157 AYT → SVO Jun 20, 16:14 UTCJun 20, 17:54 UTC1h 40m
2026-06-20 AFL2129 AYT → SVO Jun 20, 04:14 UTCJun 20, 14:44 UTC10h 30m
2026-06-19 AFL423 - Jun 19, 09:55 UTCJun 20, 02:44 UTC16h 50m
2026-06-17 AFL1865 EVN → SVO Jun 17, 22:00 UTCJun 17, 22:30 UTC30m
2026-06-17 AFL1864 SVO → EVN Jun 17, 14:25 UTCJun 17, 14:55 UTC30m
2026-06-17 AFL2149 AYT → SVO Jun 17, 05:35 UTCJun 17, 07:30 UTC1h 55m

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-73129 page for operator, model, and routing details .

Mode-S 151DA9 frequently asked

What is Mode-S code 151DA9?
151DA9 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73129.
Where is Mode-S 151DA9 registered?
Mode-S code 151DA9 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DA9 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DA9, octal 05216651, decimal 1,383,849.
What flights does 151DA9 operate?
Mode-S 151DA9 has broadcast 20 distinct callsigns, including AFL905, AFL904, AFL900, AFL2149, AFL427.