Apparatus

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sensors Mode-S transponder

151D8F

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73103 · BOEING 737-800

Hex
151D8F
Octal
05216617
Decimal
1,383,823
Country
RU
Tail
RA-73103
Type
B738
No current signal · last broadcast 2h ago
Flights observed
77
Distinct callsigns
20
Country
RU
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 151D8F.

Country allocation

The ICAO 24-bit address 151D8F 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
AFL1967 Aeroflot Russian Airlines 7 2026-05-30
AFL1491 Aeroflot Russian Airlines 6 2026-05-16
AFL2122 Aeroflot Russian Airlines 5 2026-05-24
AFL1863 Aeroflot Russian Airlines 5 2026-05-28
AFL431 Aeroflot Russian Airlines 4 2026-04-29
AFL2139 Aeroflot Russian Airlines 4 2026-05-28
AFL2123 Aeroflot Russian Airlines 4 2026-05-24
AFL1461 Aeroflot Russian Airlines 4 2026-05-19
AFL438 Aeroflot Russian Airlines 3 2026-05-09
AFL2138 Aeroflot Russian Airlines 3 2026-05-28
AFL1862 Aeroflot Russian Airlines 3 2026-05-28
AFL439 Aeroflot Russian Airlines 2 2026-05-09
AFL1869 Aeroflot Russian Airlines 2 2026-04-19
AFL1681 Aeroflot Russian Airlines 2 2026-05-29
AFL1539 Aeroflot Russian Airlines 2 2026-05-05
AFL1538 Aeroflot Russian Airlines 2 2026-05-05
AFL1405 Aeroflot Russian Airlines 2 2026-04-28
AFL430 Aeroflot Russian Airlines 1 2026-04-29
AFL401 Aeroflot Russian Airlines 1 2026-04-21
AFL400 Aeroflot Russian Airlines 1 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AFL2157 AYT → SVO May 30, 16:35 UTCMay 30, 18:20 UTC1h 45m
2026-05-30 AFL1967 EVN → SVO May 30, 03:20 UTCMay 30, 14:35 UTC11h 15m
2026-05-30 AFL1966 SVO → EVN May 30, 01:30 UTCMay 30, 01:40 UTC10m
2026-05-29 AFL1681 NBC → SVO May 29, 18:50 UTCMay 29, 19:15 UTC25m
2026-05-29 AFL1681 NBC → SVO May 29, 17:55 UTCMay 29, 18:10 UTC15m
2026-05-28 AFL1863 EVN → SVO May 28, 17:25 UTCMay 28, 17:50 UTC25m
2026-05-28 AFL1862 SVO → EVN May 28, 12:30 UTCMay 28, 12:55 UTC25m
2026-05-28 AFL2139 IST → SVO May 28, 06:10 UTCMay 28, 06:40 UTC30m
2026-05-28 AFL2138 SVO → IST May 28, 01:10 UTCMay 28, 01:35 UTC25m
2026-05-26 AFL1562 SVO → IKT May 26, 23:45 UTCMay 27, 10:25 UTC10h 40m
2026-05-25 AFL1212 SVO → KUF May 25, 11:00 UTCMay 25, 11:30 UTC30m
2026-05-25 AFL1967 EVN → SVO May 25, 03:15 UTCMay 25, 03:45 UTC30m
2026-05-24 AFL2123 DLM → SVO May 24, 15:10 UTCMay 24, 17:15 UTC2h 5m
2026-05-24 AFL2122 SVO → DLM May 24, 13:10 UTCMay 24, 13:30 UTC20m
2026-05-24 AFL2122 SVO → DLM May 24, 09:10 UTCMay 24, 09:35 UTC25m
2026-05-23 AFL2123 DLM → SVO May 23, 14:50 UTCMay 23, 16:45 UTC1h 55m
2026-05-23 AFL2122 SVO → DLM May 23, 12:45 UTCMay 23, 13:10 UTC25m
2026-05-21 AFL1967 EVN → SVO May 21, 03:05 UTCMay 21, 18:20 UTC15h 15m
2026-05-20 AFL1863 EVN → SVO May 20, 17:15 UTCMay 20, 18:10 UTC55m
2026-05-20 AFL1862 SVO → EVN May 20, 15:20 UTCMay 20, 15:30 UTC10m
2026-05-19 AFL1461 OVB → SVO May 19, 15:10 UTCMay 20, 06:45 UTC15h 36m
2026-05-19 AFL1461 OVB → SVO May 19, 10:45 UTCMay 20, 06:45 UTC20h 1m
2026-05-18 AFL1461 OVB → SVO May 18, 20:35 UTCMay 19, 19:45 UTC23h 10m
2026-05-18 AFL1444 SVO → IKT May 18, 12:25 UTCMay 19, 10:55 UTC22h 29m
2026-05-18 AFL1967 EVN → SVO May 18, 03:35 UTCMay 18, 21:05 UTC17h 29m
2026-05-17 AFL1967 EVN → SVO May 17, 07:50 UTCMay 18, 04:30 UTC20h 40m
2026-05-16 AFL1491 KJA → SVO May 16, 10:16 UTCMay 16, 18:25 UTC8h 10m
2026-05-15 AFL1491 KJA → SVO May 15, 18:15 UTCMay 16, 15:40 UTC21h 26m
2026-05-15 AFL1491 KJA → SVO May 15, 15:50 UTCMay 16, 15:40 UTC23h 51m
2026-05-15 AFL1491 KJA → SVO May 15, 15:20 UTCMay 16, 13:01 UTC21h 41m
2026-05-15 AFL1491 KJA → SVO May 15, 12:30 UTCMay 16, 10:16 UTC21h 45m
2026-05-15 AFL1491 KJA → SVO May 15, 10:00 UTCMay 15, 18:40 UTC8h 39m
2026-05-14 AFL2123 DLM → SVO May 14, 14:40 UTCMay 15, 05:20 UTC14h 40m
2026-05-14 AFL2122 SVO → DLM May 14, 12:35 UTCMay 14, 12:55 UTC20m
2026-05-13 AFL2122 SVO → DLM May 13, 14:35 UTCMay 14, 12:55 UTC22h 20m
2026-05-12 AFL1639 OMS → SVO May 12, 23:15 UTCMay 13, 14:40 UTC15h 25m
2026-05-11 AFL1461 OVB → SVO May 11, 15:05 UTCMay 11, 16:35 UTC1h 30m
2026-05-10 AFL2123 DLM → SVO May 10, 14:49 UTCMay 10, 17:20 UTC2h 30m
2026-05-10 AFL1967 EVN → SVO May 10, 03:10 UTCMay 10, 13:10 UTC10h 0m
2026-05-09 AFL439 SSH → SVO May 9, 13:00 UTCMay 9, 17:10 UTC4h 10m
2026-05-09 AFL438 SVO → SSH May 9, 07:50 UTCMay 9, 10:55 UTC3h 5m
2026-05-08 AFL438 SVO → SSH May 8, 11:49 UTCMay 9, 10:55 UTC23h 5m
2026-05-08 AFL438 SVO → SSH May 8, 10:29 UTCMay 9, 09:45 UTC23h 15m
2026-05-06 AFL1751 YKS → SVO May 6, 08:50 UTCMay 6, 10:30 UTC1h 40m
2026-05-05 AFL1539 TOF → SVO May 5, 11:30 UTCMay 5, 11:55 UTC25m
2026-05-05 AFL1538 SVO → TOF May 5, 09:45 UTCMay 5, 10:15 UTC30m
2026-05-04 AFL2139 IST → SVO May 4, 06:10 UTCMay 4, 06:20 UTC10m
2026-05-03 AFL2138 SVO → IST May 3, 21:10 UTCMay 3, 21:39 UTC30m
2026-05-02 AFL1442 SVO → IKT May 2, 11:50 UTCMay 3, 06:55 UTC19h 4m
2026-05-02 AFL1539 TOF → SVO May 2, 11:40 UTCMay 3, 06:55 UTC19h 14m

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-73103 page for operator, model, and routing details .

Mode-S 151D8F frequently asked

What is Mode-S code 151D8F?
151D8F is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73103.
Where is Mode-S 151D8F registered?
Mode-S code 151D8F is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D8F 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 151D8F, octal 05216617, decimal 1,383,823.
What flights does 151D8F operate?
Mode-S 151D8F has broadcast 20 distinct callsigns, including AFL1967, AFL1491, AFL2122, AFL1863, AFL431.