Apparatus

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sensors Mode-S transponder

151DA7

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73127 · BOEING 737-800

Hex
151DA7
Octal
05216647
Decimal
1,383,847
Country
RU
Tail
RA-73127
Type
B738
No current signal · last broadcast Jul 26, 17:45 UTC
Flights observed
144
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 17:45 UTC

Last known position

Most recent position reported by Mode-S 151DA7.

Country allocation

The ICAO 24-bit address 151DA7 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
AFL2139 Aeroflot Russian Airlines 10 2026-07-26
AFL2138 Aeroflot Russian Airlines 7 2026-07-26
AFL401 - 6 2026-06-29
AFL400 - 6 2026-06-29
AFL2127 - 5 2026-07-15
AFL2126 - 5 2026-07-15
AFL1994 Aeroflot Russian Airlines 5 2026-05-13
AFL435 - 4 2026-07-04
AFL2168 Aeroflot Russian Airlines 4 2026-07-11
AFL1995 Aeroflot Russian Airlines 4 2026-05-14
AFL521 - 3 2026-07-22
AFL430 - 3 2026-07-04
AFL426 Aeroflot Russian Airlines 3 2026-04-17
AFL2169 - 3 2026-07-11
AFL2157 - 3 2026-07-19
AFL2124 Aeroflot Russian Airlines 3 2026-04-24
AFL2123 Aeroflot Russian Airlines 3 2026-05-28
AFL1563 - 3 2026-07-16
AFL1487 - 3 2026-07-07
AFL1443 - 3 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFL1863 EVN → SVO Jul 26, 17:15 UTCJul 26, 17:45 UTC30m
2026-07-26 AFL1862 SVO → EVN Jul 26, 15:35 UTCJul 26, 15:45 UTC10m
2026-07-26 AFL2139 IST → SVO Jul 26, 06:15 UTCJul 26, 06:40 UTC26m
2026-07-26 AFL2138 SVO → IST Jul 26, 01:05 UTCJul 26, 01:20 UTC15m
2026-07-25 AFL1137 AER → SVO Jul 25, 17:30 UTCJul 25, 18:00 UTC30m
2026-07-24 AFL1513 SGC → SVO Jul 24, 05:55 UTCJul 24, 06:30 UTC35m
2026-07-23 AFL2139 IST → SVO Jul 23, 06:10 UTCJul 23, 07:40 UTC1h 30m
2026-07-23 AFL2138 SVO → IST Jul 23, 01:10 UTCJul 23, 01:25 UTC15m
2026-07-22 AFL521 - Jul 22, 12:35 UTCJul 22, 16:00 UTC3h 25m
2026-07-22 AFL520 SVO → SVO Jul 22, 04:20 UTCJul 22, 04:40 UTC20m
2026-07-21 AFL1519 RGK → SVO Jul 21, 10:35 UTCJul 21, 12:35 UTC2h 0m
2026-07-19 AFL2157 - Jul 19, 20:20 UTCJul 19, 21:15 UTC55m
2026-07-19 AFL2157 - Jul 19, 19:20 UTCJul 19, 19:45 UTC25m
2026-07-19 AFL2156 SVO → AYT Jul 19, 13:15 UTCJul 19, 14:50 UTC1h 35m
2026-07-19 AFL1443 - Jul 19, 06:10 UTCJul 19, 06:35 UTC25m
2026-07-18 AFL1473 NJC → SVO Jul 18, 05:20 UTCJul 18, 05:50 UTC30m
2026-07-16 AFL1563 - Jul 16, 02:10 UTCJul 16, 19:20 UTC17h 10m
2026-07-15 AFL1563 - Jul 15, 15:50 UTCJul 16, 10:15 UTC18h 25m
2026-07-15 AFL2127 - Jul 15, 14:55 UTCJul 16, 10:15 UTC19h 20m
2026-07-15 AFL2126 - Jul 15, 12:30 UTCJul 15, 13:25 UTC55m
2026-07-14 AFL2133 - Jul 14, 01:25 UTCJul 14, 01:55 UTC30m
2026-07-12 AFL2157 - Jul 12, 16:45 UTCJul 12, 18:30 UTC1h 45m
2026-07-12 AFL2156 - Jul 12, 15:01 UTCJul 12, 15:20 UTC20m
2026-07-11 AFL2169 - Jul 11, 17:45 UTCJul 11, 19:35 UTC1h 50m
2026-07-11 AFL2168 SVO → DLM Jul 11, 15:45 UTCJul 11, 16:20 UTC35m
2026-07-09 AFL2169 - Jul 9, 17:25 UTCJul 9, 19:15 UTC1h 50m
2026-07-08 AFL1443 - Jul 8, 23:05 UTCJul 9, 16:00 UTC16h 55m
2026-07-08 AFL1443 - Jul 8, 10:45 UTCJul 9, 07:00 UTC20h 15m
2026-07-07 AFL1487 - Jul 7, 17:50 UTCJul 8, 13:35 UTC19h 45m
2026-07-07 AFL1487 - Jul 7, 17:30 UTCJul 8, 13:35 UTC20h 5m
2026-07-07 AFL2168 SVO → DLM Jul 7, 15:50 UTCJul 7, 16:10 UTC20m
2026-07-04 AFL435 - Jul 4, 18:40 UTCJul 5, 12:50 UTC18h 10m
2026-07-04 AFL431 - Jul 4, 18:00 UTCJul 4, 18:35 UTC35m
2026-07-04 AFL430 - Jul 4, 14:05 UTCJul 4, 15:40 UTC1h 35m
2026-07-03 AFL430 - Jul 3, 17:50 UTCJul 4, 15:40 UTC21h 50m
2026-07-03 AFL430 - Jul 3, 17:25 UTCJul 4, 15:40 UTC22h 15m
2026-07-03 AFL2139 - Jul 3, 06:10 UTCJul 3, 06:35 UTC25m
2026-07-03 AFL2138 - Jul 3, 00:55 UTCJul 3, 01:10 UTC15m
2026-07-02 AFL2138 - Jul 2, 20:55 UTCJul 2, 21:45 UTC50m
2026-06-30 AFL2127 AYT → SVO Jun 30, 16:35 UTCJun 30, 17:00 UTC25m
2026-06-30 AFL2126 - Jun 30, 13:55 UTCJun 30, 15:05 UTC1h 10m
2026-06-29 AFL401 - Jun 29, 15:54 UTCJun 30, 15:05 UTC23h 11m
2026-06-29 AFL401 - Jun 29, 14:25 UTCJun 29, 16:55 UTC2h 30m
2026-06-29 AFL400 - Jun 29, 11:55 UTCJun 29, 12:09 UTC15m
2026-06-29 AFL400 SVO → SVO Jun 29, 07:05 UTCJun 29, 07:34 UTC30m
2026-06-28 AFL401 - Jun 28, 14:14 UTCJun 28, 16:45 UTC2h 30m
2026-06-27 AFL400 - Jun 27, 18:15 UTCJun 28, 12:05 UTC17h 50m
2026-06-27 AFL400 - Jun 27, 17:20 UTCJun 28, 12:05 UTC18h 45m
2026-06-27 AFL2168 SVO → DLM Jun 27, 14:39 UTCJun 27, 15:55 UTC1h 15m
2026-06-26 AFL401 CAI → SVO Jun 26, 14:19 UTCJun 26, 16:49 UTC2h 30m

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-73127 page for operator, model, and routing details .

Mode-S 151DA7 frequently asked

What is Mode-S code 151DA7?
151DA7 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73127.
Where is Mode-S 151DA7 registered?
Mode-S code 151DA7 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DA7 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DA7, octal 05216647, decimal 1,383,847.
What flights does 151DA7 operate?
Mode-S 151DA7 has broadcast 20 distinct callsigns, including AFL2139, AFL2138, AFL401, AFL400, AFL2127.