Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

151D90

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73104 · BOEING 737-800

Hex
151D90
Octal
05216620
Decimal
1,383,824
Country
RU
Tail
RA-73104
Type
B738
No current signal · last broadcast 5h ago
Flights observed
40
Distinct callsigns
20
Country
RU
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 151D90.

Country allocation

The ICAO 24-bit address 151D90 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
AFL1751 Aeroflot Russian Airlines 4 2026-05-18
AFL1539 Aeroflot Russian Airlines 4 2026-05-12
AFL1538 Aeroflot Russian Airlines 4 2026-05-12
AFL1455 Aeroflot Russian Airlines 4 2026-05-07
AFL1454 Aeroflot Russian Airlines 3 2026-05-18
AFL2927 Aeroflot Russian Airlines 2 2026-05-11
AFL1461 Aeroflot Russian Airlines 2 2026-05-01
AFL1443 Aeroflot Russian Airlines 2 2026-05-10
AFL1442 Aeroflot Russian Airlines 2 2026-05-14
AFL1405 - 2 2026-04-13
AFL1306 Aeroflot Russian Airlines 2 2026-05-29
AFL1639 Aeroflot Russian Airlines 1 2026-05-23
AFL1638 Aeroflot Russian Airlines 1 2026-04-20
AFL1563 Aeroflot Russian Airlines 1 2026-05-22
AFL1549 Aeroflot Russian Airlines 1 2026-04-22
AFL1548 Aeroflot Russian Airlines 1 2026-04-22
AFL1491 Aeroflot Russian Airlines 1 2026-05-08
AFL1490 Aeroflot Russian Airlines 1 2026-05-28
AFL1246 Aeroflot Russian Airlines 1 2026-05-29
AFL1082 Aeroflot Russian Airlines 1 2026-05-25

Recent flights last 40

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFL1306 SVO → OVB May 29, 23:20 UTCMay 29, 23:50 UTC30m
2026-05-29 AFL1306 SVO → OVB May 29, 22:25 UTCMay 29, 22:45 UTC20m
2026-05-29 AFL1246 SVO → REN May 29, 15:40 UTCMay 29, 16:10 UTC30m
2026-05-28 AFL1490 SVO → KJA May 28, 09:10 UTCMay 28, 09:35 UTC25m
2026-05-25 AFL1082 SVO → GDZ May 25, 10:40 UTCMay 25, 11:10 UTC30m
2026-05-23 AFL1639 OMS → SVO May 23, 12:25 UTCMay 24, 04:25 UTC16h 1m
2026-05-22 AFL1563 IKT → SVO May 22, 10:10 UTCMay 22, 10:45 UTC35m
2026-05-18 AFL1454 SVO → UUD May 18, 22:00 UTCMay 18, 22:25 UTC25m
2026-05-18 AFL1454 SVO → UUD May 18, 18:30 UTCMay 18, 18:50 UTC20m
2026-05-18 AFL1751 YKS → SVO May 18, 09:05 UTCMay 18, 09:45 UTC40m
2026-05-14 AFL1442 SVO → IKT May 14, 22:05 UTCMay 15, 06:50 UTC8h 45m
2026-05-14 AFL1442 SVO → IKT May 14, 10:05 UTCMay 15, 06:50 UTC20h 45m
2026-05-14 AFL1751 YKS → SVO May 14, 08:45 UTCMay 15, 06:50 UTC22h 5m
2026-05-12 AFL1539 TOF → SVO May 12, 11:35 UTCMay 12, 12:00 UTC25m
2026-05-12 AFL1538 SVO → TOF May 12, 09:25 UTCMay 12, 09:50 UTC25m
2026-05-12 AFL1538 SVO → TOF May 12, 06:10 UTCMay 12, 06:25 UTC15m
2026-05-11 AFL2927 SVX → KRR May 11, 03:55 UTCMay 11, 14:55 UTC11h 0m
2026-05-10 AFL2927 SVX → KRR May 10, 06:45 UTCMay 11, 04:55 UTC22h 10m
2026-05-10 AFL1443 IKT → SVO May 10, 04:04 UTCMay 11, 04:00 UTC23h 55m
2026-05-10 AFL1443 IKT → SVO May 10, 03:35 UTCMay 10, 06:59 UTC3h 25m
2026-05-09 AFL1539 TOF → SVO May 9, 11:55 UTCMay 9, 22:20 UTC10h 25m
2026-05-09 AFL1538 SVO → TOF May 9, 04:10 UTCMay 9, 10:35 UTC6h 25m
2026-05-08 AFL1491 KJA → SVO May 8, 15:15 UTCMay 9, 10:35 UTC19h 20m
2026-05-07 AFL1455 UUD → SVO May 7, 01:25 UTCMay 7, 03:40 UTC2h 15m
2026-05-06 AFL1454 SVO → UUD May 6, 18:30 UTCMay 6, 22:10 UTC3h 40m
2026-05-01 AFL1461 OVB → SVO May 1, 12:45 UTCMay 2, 03:50 UTC15h 5m
2026-04-28 AFL1751 YKS → SVO Apr 28, 10:15 UTCApr 28, 11:30 UTC1h 15m
2026-04-22 AFL1549 OVB → SVO Apr 22, 23:20 UTCApr 23, 02:00 UTC2h 40m
2026-04-22 AFL1548 SVO → OVB Apr 22, 18:10 UTCApr 22, 18:40 UTC30m
2026-04-20 AFL1638 SVO → OMS Apr 20, 21:55 UTCApr 20, 22:15 UTC20m
2026-04-20 AFL1455 UUD → SVO Apr 20, 01:35 UTCApr 20, 06:55 UTC5h 20m
2026-04-16 AFL1539 - Apr 16, 15:15 UTCApr 16, 15:45 UTC30m
2026-04-16 AFL1539 - Apr 16, 11:35 UTCApr 16, 11:49 UTC15m
2026-04-16 AFL1538 SVO → TOF Apr 16, 09:19 UTCApr 16, 09:50 UTC30m
2026-04-15 AFL1751 YKS → SVO Apr 15, 09:30 UTCApr 15, 10:55 UTC1h 25m
2026-04-14 AFL1461 OVB → SVO Apr 14, 12:50 UTCApr 14, 14:30 UTC1h 40m
2026-04-13 AFL1405 - Apr 13, 17:00 UTCApr 13, 17:20 UTC20m
2026-04-13 AFL1405 - Apr 13, 16:05 UTCApr 13, 16:15 UTC10m
2026-04-13 AFL1455 UUD → SVO Apr 13, 06:00 UTCApr 13, 06:25 UTC25m
2026-04-13 AFL1455 UUD → SVO Apr 13, 01:25 UTCApr 13, 03:40 UTC2h 15m

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-73104 page for operator, model, and routing details .

Mode-S 151D90 frequently asked

What is Mode-S code 151D90?
151D90 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73104.
Where is Mode-S 151D90 registered?
Mode-S code 151D90 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151D90 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151D90, octal 05216620, decimal 1,383,824.
What flights does 151D90 operate?
Mode-S 151D90 has broadcast 20 distinct callsigns, including AFL1751, AFL1539, AFL1538, AFL1455, AFL1454.