Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

15204F

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73807 · BOEING 737-500

Hex
15204F
Octal
05220117
Decimal
1,384,527
Country
RU
Tail
RA-73807
Type
B735
No current signal · last broadcast 2d ago
Flights observed
75
Distinct callsigns
20
Country
RU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 15204F.

Country allocation

The ICAO 24-bit address 15204F 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
SVR774 - 7 2026-06-17
SVR7242 - 7 2026-06-17
SVR105 Ural Airlines 7 2026-05-05
SVR7241 Ural Airlines 6 2026-06-10
SVR106 Ural Airlines 6 2026-05-06
SVR392 - 2 2026-07-08
SVR391 - 2 2026-07-08
SVR2951 Ural Airlines 2 2026-06-12
SVR2720 Ural Airlines 2 2026-04-14
SVR2719 Ural Airlines 2 2026-04-14
SVR2412 Ural Airlines 2 2026-06-16
SVR2317 - 2 2026-04-15
SVR2104 Ural Airlines 2 2026-04-16
SVR2103 Ural Airlines 2 2026-04-17
SVR784 Ural Airlines 1 2026-05-06
SVR773 - 1 2026-04-13
SVR628 - 1 2026-06-15
SVR627 Ural Airlines 1 2026-06-15
SVR503 Ural Airlines 1 2026-05-09
SVR366 - 1 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 SVR366 - Jul 12, 07:40 UTCJul 12, 17:30 UTC9h 50m
2026-07-11 SVR225 - Jul 11, 06:10 UTCJul 11, 06:20 UTC10m
2026-07-08 SVR392 - Jul 8, 11:05 UTCJul 8, 12:15 UTC1h 10m
2026-07-08 SVR391 - Jul 8, 07:50 UTCJul 8, 08:45 UTC55m
2026-07-05 SVR392 - Jul 5, 18:20 UTCJul 5, 19:35 UTC1h 15m
2026-07-05 SVR391 - Jul 5, 01:15 UTCJul 5, 16:50 UTC15h 35m
2026-06-17 SVR774 - Jun 17, 19:45 UTCJun 17, 21:40 UTC1h 55m
2026-06-17 SVR7242 - Jun 17, 10:10 UTCJun 17, 10:40 UTC30m
2026-06-16 SVR2412 KVD → DME Jun 16, 15:20 UTCJun 16, 15:35 UTC15m
2026-06-15 SVR628 - Jun 15, 15:19 UTCJun 15, 17:20 UTC2h 0m
2026-06-15 SVR627 DME → KGD Jun 15, 13:00 UTCJun 15, 13:34 UTC35m
2026-06-13 SVR2952 GYD → SVX Jun 13, 03:10 UTCJun 13, 04:05 UTC55m
2026-06-12 SVR2951 SVX → GYD Jun 12, 15:35 UTCJun 12, 16:15 UTC40m
2026-06-10 SVR774 IST → SVX Jun 10, 17:20 UTCJun 10, 20:05 UTC2h 45m
2026-06-10 SVR7241 AER → IST Jun 10, 14:10 UTCJun 10, 15:45 UTC1h 35m
2026-06-10 SVR7242 IST → AER Jun 10, 10:25 UTCJun 10, 10:55 UTC30m
2026-06-09 SVR219 SVX → AER Jun 9, 07:55 UTCJun 9, 14:10 UTC6h 15m
2026-06-09 SVR2145 ZIA → GYD Jun 9, 03:35 UTCJun 9, 04:00 UTC25m
2026-06-08 SVR2951 SVX → GYD Jun 8, 20:20 UTCJun 8, 23:20 UTC3h 0m
2026-06-07 SVR774 IST → SVX Jun 7, 19:55 UTCJun 7, 20:05 UTC10m
2026-06-07 SVR7241 AER → IST Jun 7, 17:45 UTCJun 7, 18:05 UTC20m
2026-06-07 SVR7242 IST → AER Jun 7, 10:00 UTCJun 7, 11:35 UTC1h 35m
2026-06-06 SVR2734 OSS → LED Jun 6, 05:10 UTCJun 6, 05:45 UTC35m
2026-06-03 SVR2806 OSS → KJA Jun 3, 10:10 UTCJun 3, 15:45 UTC5h 35m
2026-06-01 SVR774 IST → SVX Jun 1, 16:55 UTCJun 1, 18:45 UTC1h 50m
2026-06-01 SVR7242 IST → AER Jun 1, 09:55 UTCJun 1, 14:05 UTC4h 10m
2026-05-31 SVR774 IST → SVX May 31, 17:10 UTCJun 1, 07:25 UTC14h 15m
2026-05-31 SVR7241 AER → IST May 31, 14:45 UTCMay 31, 15:10 UTC25m
2026-05-31 SVR7242 IST → AER May 31, 10:05 UTCMay 31, 10:40 UTC35m
2026-05-30 SVR2986 FRU → SVX May 30, 06:50 UTCMay 30, 07:00 UTC10m
2026-05-28 SVR774 IST → SVX May 28, 17:00 UTCMay 29, 06:55 UTC13h 55m
2026-05-28 SVR7241 AER → IST May 28, 14:20 UTCMay 28, 14:45 UTC25m
2026-05-28 SVR7241 AER → IST May 28, 13:05 UTCMay 28, 13:30 UTC25m
2026-05-28 SVR7242 IST → AER May 28, 09:35 UTCMay 28, 10:05 UTC30m
2026-05-27 SVR271 DME → SVX May 27, 21:20 UTCMay 27, 21:40 UTC20m
2026-05-11 SVR205 SVX → MRV May 11, 09:40 UTCMay 11, 10:40 UTC1h 0m
2026-05-10 SVR2146 GYD → ZIA May 10, 17:40 UTCMay 11, 03:20 UTC9h 40m
2026-05-10 SVR224 LED → SVX May 10, 09:24 UTCMay 10, 09:45 UTC20m
2026-05-10 SVR223 SVX → LED May 10, 05:40 UTCMay 10, 07:04 UTC1h 25m
2026-05-09 SVR503 SVX → KGD May 9, 09:50 UTCMay 9, 10:20 UTC30m
2026-05-06 SVR784 IST → DME May 6, 13:55 UTCMay 6, 14:05 UTC10m
2026-05-06 SVR106 IKT → DME May 6, 01:25 UTCMay 6, 02:15 UTC50m
2026-05-06 SVR106 IKT → DME May 6, 00:05 UTCMay 6, 00:15 UTC10m
2026-05-05 SVR105 DME → IKT May 5, 18:15 UTCMay 5, 20:40 UTC2h 25m
2026-05-03 SVR2412 KVD → DME May 3, 11:55 UTCMay 3, 12:15 UTC20m
2026-04-30 SVR269 DME → SVX Apr 30, 12:15 UTCApr 30, 12:35 UTC20m
2026-04-27 SVR106 IKT → DME Apr 27, 01:20 UTCApr 27, 17:50 UTC16h 30m
2026-04-27 SVR106 IKT → DME Apr 27, 00:00 UTCApr 27, 00:15 UTC15m
2026-04-26 SVR105 DME → IKT Apr 26, 21:50 UTCApr 26, 22:05 UTC15m
2026-04-26 SVR105 DME → IKT Apr 26, 20:05 UTCApr 26, 20:35 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-73807 page for operator, model, and routing details .

Mode-S 15204F frequently asked

What is Mode-S code 15204F?
15204F is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73807.
Where is Mode-S 15204F registered?
Mode-S code 15204F is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 15204F broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 15204F, octal 05220117, decimal 1,384,527.
What flights does 15204F operate?
Mode-S 15204F has broadcast 20 distinct callsigns, including SVR774, SVR7242, SVR105, SVR7241, SVR106.