Apparatus

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sensors Mode-S transponder

151D9C

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73116 · BOEING 737-800

Hex
151D9C
Octal
05216634
Decimal
1,383,836
Country
RU
Tail
RA-73116
Type
B738
No current signal · last broadcast 2h ago
Flights observed
164
Distinct callsigns
20
Country
RU
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 151D9C.

Country allocation

The ICAO 24-bit address 151D9C 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
AFL2126 - 13 2026-07-08
AFL2139 - 12 2026-07-13
AFL400 - 9 2026-07-11
AFL401 - 6 2026-07-12
AFL2138 - 6 2026-07-13
AFL2127 - 6 2026-07-08
AFL521 - 5 2026-07-14
AFL435 Aeroflot Russian Airlines 4 2026-06-14
AFL430 Aeroflot Russian Airlines 4 2026-05-08
AFL1863 - 4 2026-07-13
AFL1862 - 4 2026-07-10
AFL1562 Aeroflot Russian Airlines 4 2026-05-28
AFL1445 Aeroflot Russian Airlines 4 2026-06-05
AFL520 - 3 2026-07-09
AFL438 Aeroflot Russian Airlines 3 2026-06-06
AFL2122 Aeroflot Russian Airlines 3 2026-05-30
AFL1517 Aeroflot Russian Airlines 3 2026-05-04
AFL1487 Aeroflot Russian Airlines 3 2026-05-22
AFL1454 Aeroflot Russian Airlines 3 2026-05-16
AFL1444 - 3 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFL521 - Jul 14, 12:35 UTCJul 14, 13:10 UTC35m
2026-07-13 AFL1863 - Jul 13, 17:10 UTCJul 13, 17:35 UTC25m
2026-07-13 AFL2139 - Jul 13, 09:40 UTCJul 13, 10:05 UTC25m
2026-07-13 AFL2139 - Jul 13, 06:05 UTCJul 13, 06:30 UTC25m
2026-07-13 AFL2138 - Jul 13, 02:40 UTCJul 13, 03:01 UTC20m
2026-07-12 AFL401 - Jul 12, 14:45 UTCJul 12, 15:55 UTC1h 10m
2026-07-11 AFL400 - Jul 11, 20:20 UTCJul 12, 12:50 UTC16h 30m
2026-07-11 AFL1864 SVO → SVO Jul 11, 15:30 UTCJul 11, 15:55 UTC25m
2026-07-10 AFL1863 - Jul 10, 17:10 UTCJul 10, 17:35 UTC25m
2026-07-10 AFL1862 - Jul 10, 12:30 UTCJul 10, 12:50 UTC20m
2026-07-10 AFL2139 - Jul 10, 09:40 UTCJul 10, 10:00 UTC20m
2026-07-10 AFL2139 - Jul 10, 06:10 UTCJul 10, 06:40 UTC30m
2026-07-10 AFL2138 - Jul 10, 01:05 UTCJul 10, 01:30 UTC25m
2026-07-09 AFL521 - Jul 9, 12:40 UTCJul 9, 13:05 UTC25m
2026-07-09 AFL520 SVO → SVO Jul 9, 04:20 UTCJul 9, 04:50 UTC30m
2026-07-08 AFL2127 - Jul 8, 14:40 UTCJul 8, 16:25 UTC1h 45m
2026-07-08 AFL2126 - Jul 8, 12:25 UTCJul 8, 12:40 UTC15m
2026-07-08 AFL2126 - Jul 8, 12:00 UTCJul 8, 12:20 UTC20m
2026-07-08 AFL2133 - Jul 8, 01:05 UTCJul 8, 01:35 UTC30m
2026-07-07 AFL2132 - Jul 7, 23:00 UTCJul 7, 23:10 UTC10m
2026-07-06 AFL2157 - Jul 6, 16:20 UTCJul 6, 18:05 UTC1h 45m
2026-07-06 AFL2156 - Jul 6, 04:00 UTCJul 6, 14:50 UTC10h 50m
2026-07-04 AFL2159 - Jul 4, 15:20 UTCJul 4, 17:10 UTC1h 50m
2026-07-03 AFL2158 - Jul 3, 19:30 UTCJul 4, 13:40 UTC18h 10m
2026-07-03 AFL2158 - Jul 3, 16:40 UTCJul 4, 13:40 UTC21h 0m
2026-07-03 AFL527 - Jul 3, 16:10 UTCJul 3, 16:35 UTC25m
2026-07-03 AFL526 - Jul 3, 13:25 UTCJul 3, 14:05 UTC40m
2026-07-02 AFL526 - Jul 2, 17:10 UTCJul 3, 14:05 UTC20h 55m
2026-07-01 AFL520 SVO → DXB Jul 1, 09:15 UTCJul 1, 09:45 UTC30m
2026-06-29 AFL2127 AYT → SVO Jun 29, 14:09 UTCJun 29, 16:00 UTC1h 50m
2026-06-29 AFL2126 - Jun 29, 02:54 UTCJun 29, 12:24 UTC9h 30m
2026-06-28 AFL2126 - Jun 28, 11:39 UTCJun 28, 12:05 UTC25m
2026-06-28 AFL2126 - Jun 28, 03:09 UTCJun 28, 11:00 UTC7h 50m
2026-06-27 AFL2139 - Jun 27, 06:05 UTCJun 27, 06:35 UTC30m
2026-06-27 AFL2138 - Jun 27, 00:55 UTCJun 27, 01:15 UTC20m
2026-06-26 AFL1444 - Jun 26, 08:40 UTCJun 26, 14:05 UTC5h 25m
2026-06-25 AFL2127 AYT → SVO Jun 25, 14:09 UTCJun 25, 15:54 UTC1h 45m
2026-06-25 AFL2126 - Jun 25, 11:50 UTCJun 25, 12:30 UTC40m
2026-06-25 AFL2126 SVO → SVO Jun 25, 07:49 UTCJun 25, 08:09 UTC20m
2026-06-24 AFL1402 SVO → SVO Jun 24, 08:14 UTCJun 24, 08:35 UTC20m
2026-06-23 AFL521 DXB → SVO Jun 23, 14:59 UTCJun 23, 19:00 UTC4h 0m
2026-06-22 AFL2127 AYT → SVO Jun 22, 17:04 UTCJun 23, 13:05 UTC20h 0m
2026-06-22 AFL2127 AYT → SVO Jun 22, 16:45 UTCJun 23, 13:05 UTC20h 20m
2026-06-22 AFL2126 SVO → AYT Jun 22, 13:49 UTCJun 22, 14:55 UTC1h 5m
2026-06-21 AFL2139 - Jun 21, 06:14 UTCJun 21, 06:50 UTC35m
2026-06-21 AFL2138 - Jun 21, 01:49 UTCJun 21, 02:10 UTC20m
2026-06-20 AFL439 SSH → SVO Jun 20, 07:59 UTCJun 20, 15:24 UTC7h 25m
2026-06-19 AFL521 DXB → SVO Jun 19, 12:39 UTCJun 19, 12:54 UTC15m
2026-06-18 AFL2125 AYT → SVO Jun 18, 17:40 UTCJun 18, 19:30 UTC1h 50m
2026-06-18 AFL2124 - Jun 18, 15:45 UTCJun 18, 16:10 UTC25m

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-73116 page for operator, model, and routing details .

Mode-S 151D9C frequently asked

What is Mode-S code 151D9C?
151D9C is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73116.
Where is Mode-S 151D9C registered?
Mode-S code 151D9C is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D9C broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D9C, octal 05216634, decimal 1,383,836.
What flights does 151D9C operate?
Mode-S 151D9C has broadcast 20 distinct callsigns, including AFL2126, AFL2139, AFL400, AFL401, AFL2138.