Apparatus

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sensors Mode-S transponder

151D9F

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73119 · BOEING 737-800

Hex
151D9F
Octal
05216637
Decimal
1,383,839
Country
RU
Tail
RA-73119
Type
B738
No current signal · last broadcast 1d ago
Flights observed
137
Distinct callsigns
20
Country
RU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 151D9F.

Country allocation

The ICAO 24-bit address 151D9F 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
AFL2138 Aeroflot Russian Airlines 13 2026-07-22
AFL2139 Aeroflot Russian Airlines 10 2026-07-24
AFL1863 Aeroflot Russian Airlines 8 2026-07-22
AFL521 - 6 2026-07-21
AFL400 - 6 2026-07-06
AFL401 - 5 2026-07-06
AFL2126 - 5 2026-07-09
AFL2125 Aeroflot Russian Airlines 5 2026-06-24
AFL435 Aeroflot Russian Airlines 4 2026-07-19
AFL1967 Aeroflot Russian Airlines 4 2026-05-28
AFL526 Aeroflot Russian Airlines 3 2026-07-23
AFL520 - 3 2026-07-02
AFL2148 - 3 2026-07-16
AFL2127 - 3 2026-07-09
AFL2124 - 3 2026-06-23
AFL1865 Aeroflot Russian Airlines 3 2026-06-30
AFL1862 - 3 2026-07-22
AFL1751 Aeroflot Russian Airlines 3 2026-05-08
AFL1443 - 3 2026-07-14
AFL684 Aeroflot Russian Airlines 2 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 AFL2139 IST → SVO Jul 24, 17:50 UTCJul 25, 13:00 UTC19h 10m
2026-07-23 AFL527 DXB → SVO Jul 23, 20:35 UTCJul 23, 21:30 UTC55m
2026-07-23 AFL526 SVO → DXB Jul 23, 18:15 UTCJul 23, 18:40 UTC25m
2026-07-22 AFL1863 EVN → SVO Jul 22, 17:10 UTCJul 22, 17:40 UTC30m
2026-07-22 AFL1862 SVO → SVO Jul 22, 12:45 UTCJul 22, 13:00 UTC15m
2026-07-22 AFL2138 SVO → IST Jul 22, 01:25 UTCJul 22, 01:35 UTC10m
2026-07-21 AFL521 - Jul 21, 13:00 UTCJul 21, 16:25 UTC3h 25m
2026-07-20 AFL2169 - Jul 20, 17:15 UTCJul 21, 09:50 UTC16h 34m
2026-07-19 AFL2168 SVO → DLM Jul 19, 22:30 UTCJul 20, 15:45 UTC17h 15m
2026-07-19 AFL435 HRG → SVO Jul 19, 11:50 UTCJul 20, 06:25 UTC18h 35m
2026-07-19 AFL435 HRG → SVO Jul 19, 10:00 UTCJul 20, 06:25 UTC20h 25m
2026-07-19 AFL435 HRG → SVO Jul 19, 07:25 UTCJul 19, 23:00 UTC15h 35m
2026-07-18 AFL435 HRG → SVO Jul 18, 17:50 UTCJul 19, 12:45 UTC18h 55m
2026-07-18 AFL430 - Jul 18, 13:40 UTCJul 18, 15:15 UTC1h 35m
2026-07-17 AFL2149 - Jul 17, 05:50 UTCJul 17, 07:35 UTC1h 45m
2026-07-16 AFL2148 - Jul 16, 17:25 UTCJul 17, 04:20 UTC10h 55m
2026-07-16 AFL2139 - Jul 16, 06:05 UTCJul 16, 06:35 UTC30m
2026-07-15 AFL2138 SVO → SVO Jul 15, 20:50 UTCJul 15, 21:10 UTC20m
2026-07-15 AFL521 - Jul 15, 12:55 UTCJul 15, 13:25 UTC30m
2026-07-14 AFL2169 - Jul 14, 17:25 UTCJul 15, 10:25 UTC16h 59m
2026-07-14 AFL1443 - Jul 14, 00:00 UTCJul 14, 16:05 UTC16h 5m
2026-07-11 AFL2139 - Jul 11, 06:10 UTCJul 11, 06:40 UTC30m
2026-07-11 AFL2138 - Jul 11, 01:20 UTCJul 11, 01:40 UTC20m
2026-07-09 AFL2127 - Jul 9, 14:15 UTCJul 9, 16:00 UTC1h 45m
2026-07-09 AFL2126 SVO → SVO Jul 9, 07:50 UTCJul 9, 08:15 UTC25m
2026-07-07 AFL1863 - Jul 7, 17:25 UTCJul 7, 17:55 UTC30m
2026-07-07 AFL2139 - Jul 7, 06:10 UTCJul 7, 15:30 UTC9h 20m
2026-07-07 AFL2138 - Jul 7, 01:15 UTCJul 7, 01:30 UTC15m
2026-07-06 AFL401 - Jul 6, 14:35 UTCJul 6, 16:55 UTC2h 20m
2026-07-06 AFL400 - Jul 6, 10:15 UTCJul 6, 12:35 UTC2h 20m
2026-07-03 AFL401 - Jul 3, 17:15 UTCJul 3, 18:30 UTC1h 15m
2026-07-03 AFL400 - Jul 3, 14:10 UTCJul 3, 15:15 UTC1h 5m
2026-07-02 AFL521 DXB → SVO Jul 2, 12:35 UTCJul 2, 13:25 UTC50m
2026-07-02 AFL520 - Jul 2, 09:30 UTCJul 2, 10:00 UTC30m
2026-07-02 AFL520 SVO → SVO Jul 2, 04:25 UTCJul 2, 04:50 UTC25m
2026-07-01 AFL527 - Jul 1, 16:10 UTCJul 1, 16:40 UTC30m
2026-07-01 AFL526 - Jul 1, 13:35 UTCJul 1, 14:10 UTC35m
2026-07-01 AFL526 SVO → SVO Jul 1, 08:40 UTCJul 1, 09:10 UTC30m
2026-06-30 AFL1865 EVN → SVO Jun 30, 19:30 UTCJun 30, 19:55 UTC25m
2026-06-30 AFL2139 - Jun 30, 06:05 UTCJun 30, 06:40 UTC35m
2026-06-30 AFL2138 - Jun 30, 00:49 UTCJun 30, 01:04 UTC15m
2026-06-29 AFL1867 EVN → SVO Jun 29, 11:39 UTCJun 29, 12:05 UTC25m
2026-06-29 AFL1866 SVO → EVN Jun 29, 07:05 UTCJun 29, 07:30 UTC25m
2026-06-28 AFL1473 NJC → SVO Jun 28, 05:20 UTCJun 28, 05:40 UTC20m
2026-06-27 AFL1443 - Jun 27, 06:05 UTCJun 28, 05:40 UTC23h 35m
2026-06-26 AFL1443 - Jun 26, 22:19 UTCJun 27, 07:24 UTC9h 5m
2026-06-24 AFL2125 AYT → SVO Jun 24, 13:50 UTCJun 25, 07:59 UTC18h 10m
2026-06-24 AFL2125 AYT → SVO Jun 24, 13:30 UTCJun 25, 07:59 UTC18h 30m
2026-06-23 AFL2124 - Jun 23, 20:34 UTCJun 24, 10:55 UTC14h 20m
2026-06-22 AFL2129 AYT → SVO Jun 22, 05:54 UTCJun 22, 07:34 UTC1h 40m

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-73119 page for operator, model, and routing details .

Mode-S 151D9F frequently asked

What is Mode-S code 151D9F?
151D9F is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73119.
Where is Mode-S 151D9F registered?
Mode-S code 151D9F is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D9F broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D9F, octal 05216637, decimal 1,383,839.
What flights does 151D9F operate?
Mode-S 151D9F has broadcast 20 distinct callsigns, including AFL2138, AFL2139, AFL1863, AFL521, AFL400.