Apparatus

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sensors Mode-S transponder

151D9B

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73115 · BOEING 737-800

Hex
151D9B
Octal
05216633
Decimal
1,383,835
Country
RU
Tail
RA-73115
Type
B738
No current signal · last broadcast 3h ago
Flights observed
216
Distinct callsigns
20
Country
RU
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 151D9B.

Country allocation

The ICAO 24-bit address 151D9B 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 - 19 2026-07-05
AFL425 - 16 2026-06-28
AFL901 - 13 2026-07-04
AFL2120 - 9 2026-07-09
AFL900 - 8 2026-07-01
AFL423 Aeroflot Russian Airlines 8 2026-05-02
AFL676 Aeroflot Russian Airlines 7 2026-06-25
AFL802 - 6 2026-06-25
AFL431 - 6 2026-07-12
AFL2149 Aeroflot Russian Airlines 6 2026-06-09
AFL2121 - 6 2026-07-09
AFL904 - 5 2026-06-30
AFL803 Aeroflot Russian Airlines 5 2026-06-25
AFL427 - 5 2026-06-27
AFL426 - 5 2026-06-27
AFL422 - 5 2026-06-23
AFL2146 Aeroflot Russian Airlines 5 2026-05-09
AFL2122 - 5 2026-07-10
AFL677 - 4 2026-06-25
AFL2148 Aeroflot Russian Airlines 4 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFL1569 - Jul 14, 03:50 UTCJul 14, 04:00 UTC10m
2026-07-13 AFL1568 SVO → SVO Jul 13, 22:15 UTCJul 13, 22:35 UTC20m
2026-07-13 AFL2159 - Jul 13, 15:00 UTCJul 13, 16:45 UTC1h 45m
2026-07-12 AFL431 - Jul 12, 20:45 UTCJul 13, 13:05 UTC16h 20m
2026-07-12 AFL431 - Jul 12, 16:50 UTCJul 13, 13:05 UTC20h 15m
2026-07-12 AFL431 - Jul 12, 04:50 UTCJul 12, 23:25 UTC18h 35m
2026-07-12 AFL431 - Jul 12, 03:50 UTCJul 12, 23:25 UTC19h 35m
2026-07-12 AFL2128 - Jul 12, 01:50 UTCJul 12, 02:30 UTC40m
2026-07-11 AFL2128 SVO → SVO Jul 11, 21:55 UTCJul 11, 22:15 UTC20m
2026-07-11 AFL2159 - Jul 11, 15:05 UTCJul 11, 16:45 UTC1h 40m
2026-07-11 AFL2158 - Jul 11, 13:05 UTCJul 11, 13:55 UTC50m
2026-07-11 AFL2158 SVO → SVO Jul 11, 08:40 UTCJul 11, 09:10 UTC30m
2026-07-10 AFL2123 - Jul 10, 14:45 UTCJul 10, 15:15 UTC30m
2026-07-10 AFL2122 - Jul 10, 01:10 UTCJul 10, 13:15 UTC12h 5m
2026-07-09 AFL2121 - Jul 9, 11:15 UTCJul 9, 13:15 UTC2h 0m
2026-07-09 AFL2120 - Jul 9, 07:45 UTCJul 9, 09:40 UTC1h 55m
2026-07-09 AFL2120 SVO → SVO Jul 9, 05:00 UTCJul 9, 05:25 UTC25m
2026-07-08 AFL419 - Jul 8, 17:35 UTCJul 8, 20:25 UTC2h 50m
2026-07-08 AFL917 - Jul 8, 07:35 UTCJul 8, 15:35 UTC8h 0m
2026-07-07 AFL2125 - Jul 7, 13:05 UTCJul 8, 05:35 UTC16h 30m
2026-07-07 AFL2124 - Jul 7, 11:20 UTCJul 7, 11:35 UTC15m
2026-07-05 AFL905 - Jul 5, 10:20 UTCJul 5, 12:50 UTC2h 30m
2026-07-04 AFL901 - Jul 4, 10:50 UTCJul 5, 10:45 UTC23h 55m
2026-07-04 AFL901 - Jul 4, 09:00 UTCJul 4, 11:45 UTC2h 45m
2026-07-03 AFL905 - Jul 3, 10:50 UTCJul 4, 06:40 UTC19h 50m
2026-07-03 AFL905 - Jul 3, 10:25 UTCJul 4, 06:40 UTC20h 15m
2026-07-02 AFL901 - Jul 2, 10:55 UTCJul 3, 10:45 UTC23h 50m
2026-07-02 AFL901 - Jul 2, 09:10 UTCJul 2, 11:55 UTC2h 45m
2026-07-01 AFL900 - Jul 1, 10:55 UTCJul 2, 06:35 UTC19h 40m
2026-07-01 AFL905 - Jul 1, 09:20 UTCJul 2, 06:35 UTC21h 15m
2026-07-01 AFL905 - Jul 1, 05:10 UTCJul 2, 04:35 UTC23h 25m
2026-06-30 AFL904 - Jun 30, 11:00 UTCJul 1, 10:30 UTC23h 30m
2026-06-30 AFL901 - Jun 30, 09:15 UTCJul 1, 06:40 UTC21h 25m
2026-06-30 AFL900 - Jun 30, 05:35 UTCJun 30, 07:10 UTC1h 35m
2026-06-28 AFL425 - Jun 28, 02:49 UTCJun 28, 21:04 UTC18h 15m
2026-06-28 AFL425 - Jun 28, 02:44 UTCJun 28, 21:04 UTC18h 20m
2026-06-27 AFL921 - Jun 27, 14:49 UTCJun 28, 14:45 UTC23h 55m
2026-06-27 AFL427 - Jun 27, 12:50 UTCJun 28, 08:59 UTC20h 10m
2026-06-27 AFL427 - Jun 27, 12:34 UTCJun 28, 08:59 UTC20h 25m
2026-06-27 AFL426 - Jun 27, 08:39 UTCJun 27, 10:10 UTC1h 30m
2026-06-25 AFL803 SVO → KZN Jun 25, 13:45 UTCJun 25, 15:34 UTC1h 50m
2026-06-25 AFL676 KRR → AYT Jun 25, 11:15 UTCJun 25, 11:50 UTC35m
2026-06-25 AFL677 - Jun 25, 06:05 UTCJun 25, 07:34 UTC1h 30m
2026-06-25 AFL802 - Jun 25, 02:25 UTCJun 25, 03:44 UTC1h 20m
2026-06-24 AFL425 - Jun 24, 06:50 UTCJun 25, 03:44 UTC20h 55m
2026-06-24 AFL425 - Jun 24, 03:24 UTCJun 25, 02:35 UTC23h 10m
2026-06-23 AFL425 - Jun 23, 13:29 UTCJun 24, 08:20 UTC18h 50m
2026-06-23 AFL425 - Jun 23, 10:49 UTCJun 24, 08:20 UTC21h 30m
2026-06-23 AFL422 - Jun 23, 09:05 UTCJun 24, 08:20 UTC23h 15m
2026-06-23 AFL422 - Jun 23, 05:54 UTCJun 24, 04:44 UTC22h 50m

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-73115 page for operator, model, and routing details .

Mode-S 151D9B frequently asked

What is Mode-S code 151D9B?
151D9B is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73115.
Where is Mode-S 151D9B registered?
Mode-S code 151D9B is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D9B broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D9B, octal 05216633, decimal 1,383,835.
What flights does 151D9B operate?
Mode-S 151D9B has broadcast 20 distinct callsigns, including AFL905, AFL425, AFL901, AFL2120, AFL900.