Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

151DA4

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73124 · BOEING 737-800

Hex
151DA4
Octal
05216644
Decimal
1,383,844
Country
RU
Tail
RA-73124
Type
B738
No current signal · last broadcast 17h ago
Flights observed
211
Distinct callsigns
20
Country
RU
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 151DA4.

Country allocation

The ICAO 24-bit address 151DA4 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
AFL423 - 12 2026-06-15
AFL427 Aeroflot Russian Airlines 11 2026-06-02
AFL429 - 10 2026-07-13
AFL422 - 10 2026-06-17
AFL912 Aeroflot Russian Airlines 8 2026-04-19
AFL905 - 8 2026-07-12
AFL802 - 8 2026-06-29
AFL909 Aeroflot Russian Airlines 7 2026-04-18
AFL803 - 7 2026-06-29
AFL676 - 7 2026-06-29
AFL2156 - 7 2026-07-09
AFL677 - 6 2026-06-29
AFL426 Aeroflot Russian Airlines 6 2026-06-02
AFL2122 Aeroflot Russian Airlines 6 2026-05-29
AFL913 Aeroflot Russian Airlines 5 2026-04-17
AFL908 Aeroflot Russian Airlines 5 2026-04-18
AFL2149 - 5 2026-06-28
AFL2129 - 5 2026-07-09
AFL2123 Aeroflot Russian Airlines 5 2026-05-29
AFL428 - 4 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AFL429 - Jul 13, 03:40 UTCJul 13, 10:05 UTC6h 25m
2026-07-12 AFL429 - Jul 12, 11:05 UTCJul 13, 10:05 UTC23h 0m
2026-07-12 AFL905 - Jul 12, 09:55 UTCJul 13, 08:40 UTC22h 45m
2026-07-12 AFL905 - Jul 12, 07:05 UTCJul 13, 05:15 UTC22h 10m
2026-07-12 AFL905 - Jul 12, 06:10 UTCJul 13, 05:01 UTC22h 50m
2026-07-11 AFL904 - Jul 11, 09:05 UTCJul 12, 07:35 UTC22h 30m
2026-07-10 AFL900 - Jul 10, 13:05 UTCJul 11, 07:05 UTC18h 0m
2026-07-10 AFL905 - Jul 10, 12:10 UTCJul 11, 07:05 UTC18h 56m
2026-07-10 AFL905 - Jul 10, 09:05 UTCJul 11, 07:05 UTC22h 0m
2026-07-10 AFL905 - Jul 10, 07:35 UTCJul 11, 07:00 UTC23h 25m
2026-07-09 AFL905 - Jul 9, 17:05 UTCJul 10, 14:45 UTC21h 40m
2026-07-09 AFL905 - Jul 9, 16:20 UTCJul 10, 14:45 UTC22h 25m
2026-07-09 AFL2156 - Jul 9, 13:25 UTCJul 9, 15:05 UTC1h 40m
2026-07-09 AFL2156 SVO → SVO Jul 9, 10:05 UTCJul 9, 10:30 UTC25m
2026-07-09 AFL2129 - Jul 9, 03:50 UTCJul 9, 05:30 UTC1h 40m
2026-07-09 AFL2128 - Jul 9, 01:40 UTCJul 9, 02:15 UTC35m
2026-07-07 AFL2159 - Jul 7, 15:55 UTCJul 7, 17:35 UTC1h 40m
2026-07-07 AFL2158 - Jul 7, 14:15 UTCJul 7, 14:35 UTC20m
2026-07-06 AFL2161 - Jul 6, 16:00 UTCJul 6, 17:40 UTC1h 40m
2026-07-05 AFL431 - Jul 5, 19:20 UTCJul 6, 14:45 UTC19h 25m
2026-07-05 AFL430 - Jul 5, 15:35 UTCJul 5, 16:00 UTC25m
2026-07-05 AFL430 - Jul 5, 14:25 UTCJul 5, 15:30 UTC1h 5m
2026-07-04 AFL433 - Jul 4, 11:15 UTCJul 4, 19:20 UTC8h 5m
2026-07-03 AFL432 - Jul 3, 17:15 UTCJul 4, 17:00 UTC23h 45m
2026-07-03 AFL2156 - Jul 3, 15:35 UTCJul 3, 15:50 UTC15m
2026-07-02 AFL2161 AYT → SVO Jul 2, 16:00 UTCJul 2, 17:50 UTC1h 50m
2026-07-02 AFL2160 - Jul 2, 13:30 UTCJul 2, 14:00 UTC30m
2026-07-02 AFL2160 SVO → SVO Jul 2, 09:30 UTCJul 2, 10:00 UTC30m
2026-07-01 AFL1865 EVN → SVO Jul 1, 18:45 UTCJul 1, 19:15 UTC30m
2026-07-01 AFL2139 - Jul 1, 06:10 UTCJul 1, 06:40 UTC30m
2026-07-01 AFL2138 - Jul 1, 02:25 UTCJul 1, 02:50 UTC25m
2026-06-30 AFL2125 - Jun 30, 13:25 UTCJun 30, 15:15 UTC1h 50m
2026-06-29 AFL2124 - Jun 29, 17:05 UTCJun 30, 11:15 UTC18h 11m
2026-06-29 AFL803 - Jun 29, 15:19 UTCJun 30, 11:15 UTC19h 56m
2026-06-29 AFL676 - Jun 29, 13:04 UTCJun 29, 13:39 UTC35m
2026-06-29 AFL677 - Jun 29, 07:59 UTCJun 29, 09:34 UTC1h 35m
2026-06-29 AFL802 - Jun 29, 02:30 UTCJun 29, 03:39 UTC1h 10m
2026-06-28 AFL802 - Jun 28, 07:05 UTCJun 29, 03:39 UTC20h 35m
2026-06-28 AFL2149 - Jun 28, 05:45 UTCJun 29, 03:39 UTC21h 55m
2026-06-27 AFL2125 AYT → SVO Jun 27, 13:15 UTCJun 28, 03:55 UTC14h 40m
2026-06-27 AFL2124 - Jun 27, 10:45 UTCJun 27, 11:14 UTC30m
2026-06-26 AFL803 SVO → KZN Jun 26, 15:05 UTCJun 27, 10:10 UTC19h 5m
2026-06-26 AFL803 SVO → KZN Jun 26, 13:59 UTCJun 27, 10:10 UTC20h 10m
2026-06-26 AFL676 KRR → AYT Jun 26, 10:10 UTCJun 26, 10:25 UTC15m
2026-06-26 AFL677 - Jun 26, 06:00 UTCJun 26, 07:24 UTC1h 25m
2026-06-26 AFL802 - Jun 26, 03:10 UTCJun 26, 03:45 UTC35m
2026-06-25 AFL429 - Jun 25, 07:30 UTCJun 26, 03:45 UTC20h 15m
2026-06-24 AFL428 - Jun 24, 16:29 UTCJun 25, 05:20 UTC12h 50m
2026-06-24 AFL2156 SVO → AYT Jun 24, 14:34 UTCJun 24, 15:00 UTC25m
2026-06-24 AFL2156 SVO → AYT Jun 24, 10:19 UTCJun 24, 10:49 UTC30m

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-73124 page for operator, model, and routing details .

Mode-S 151DA4 frequently asked

What is Mode-S code 151DA4?
151DA4 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73124.
Where is Mode-S 151DA4 registered?
Mode-S code 151DA4 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DA4 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DA4, octal 05216644, decimal 1,383,844.
What flights does 151DA4 operate?
Mode-S 151DA4 has broadcast 20 distinct callsigns, including AFL423, AFL427, AFL429, AFL422, AFL912.