Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

151FFF

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73727 · AIRBUS A-321

Hex
151FFF
Octal
05217777
Decimal
1,384,447
Country
RU
Tail
RA-73727
Type
A321
No current signal · last broadcast 13h ago
Flights observed
167
Distinct callsigns
20
Country
RU
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 151FFF.

Country allocation

The ICAO 24-bit address 151FFF 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
AFL1019 - 9 2026-07-02
AFL1018 - 8 2026-06-30
AFL1420 - 6 2026-07-11
AFL2146 - 5 2026-06-23
AFL1947 Aeroflot Russian Airlines 5 2026-06-14
AFL1451 - 5 2026-07-07
AFL2142 - 4 2026-07-06
AFL1946 - 4 2026-06-13
AFL1883 Aeroflot Russian Airlines 4 2026-04-20
AFL1882 Aeroflot Russian Airlines 4 2026-05-06
AFL1485 - 4 2026-07-04
AFL1450 - 4 2026-07-07
AFL2147 Aeroflot Russian Airlines 3 2026-06-23
AFL1887 Aeroflot Russian Airlines 3 2026-06-07
AFL1886 - 3 2026-06-24
AFL1198 Aeroflot Russian Airlines 3 2026-05-25
AFL1108 Aeroflot Russian Airlines 3 2026-04-27
AFL1032 - 3 2026-07-10
AFL1008 Aeroflot Russian Airlines 3 2026-05-29
AFL1000 Aeroflot Russian Airlines 3 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AFL2155 - Jul 13, 17:15 UTCJul 13, 19:10 UTC1h 55m
2026-07-13 AFL2154 - Jul 13, 14:55 UTCJul 13, 15:40 UTC45m
2026-07-11 AFL1420 - Jul 11, 19:45 UTCJul 11, 20:05 UTC20m
2026-07-10 AFL1215 - Jul 10, 17:00 UTCJul 10, 17:10 UTC10m
2026-07-10 AFL1033 - Jul 10, 10:50 UTCJul 10, 12:00 UTC1h 10m
2026-07-10 AFL1032 - Jul 10, 07:40 UTCJul 10, 08:25 UTC45m
2026-07-10 AFL1032 - Jul 10, 06:30 UTCJul 10, 06:40 UTC10m
2026-07-09 AFL2145 - Jul 9, 17:50 UTCJul 9, 19:35 UTC1h 45m
2026-07-09 AFL2144 - Jul 9, 14:20 UTCJul 9, 16:00 UTC1h 40m
2026-07-08 AFL1306 SVO → OVB Jul 8, 23:30 UTCJul 8, 23:40 UTC10m
2026-07-08 AFL1861 - Jul 8, 18:15 UTCJul 8, 18:40 UTC25m
2026-07-08 AFL614 KRR → EVN Jul 8, 16:10 UTCJul 8, 16:20 UTC10m
2026-07-08 AFL615 - Jul 8, 12:15 UTCJul 8, 13:05 UTC50m
2026-07-07 AFL1451 - Jul 7, 17:10 UTCJul 7, 17:40 UTC30m
2026-07-07 AFL1450 - Jul 7, 03:10 UTCJul 7, 03:35 UTC25m
2026-07-06 AFL2143 - Jul 6, 11:25 UTCJul 7, 00:50 UTC13h 25m
2026-07-06 AFL2142 - Jul 6, 08:55 UTCJul 6, 09:35 UTC40m
2026-07-06 AFL2142 SVO → SVO Jul 6, 04:55 UTCJul 6, 05:20 UTC25m
2026-07-05 AFL1194 - Jul 5, 16:35 UTCJul 5, 17:10 UTC35m
2026-07-05 AFL1003 - Jul 5, 11:00 UTCJul 5, 12:05 UTC1h 5m
2026-07-05 AFL1002 - Jul 5, 08:25 UTCJul 5, 09:10 UTC45m
2026-07-05 AFL1002 SVO → SVO Jul 5, 07:10 UTCJul 5, 07:35 UTC25m
2026-07-04 AFL1485 - Jul 4, 03:50 UTCJul 4, 04:25 UTC35m
2026-07-04 AFL1484 - Jul 4, 01:25 UTCJul 4, 01:50 UTC25m
2026-07-02 AFL1194 - Jul 2, 16:45 UTCJul 2, 17:20 UTC35m
2026-07-02 AFL1019 - Jul 2, 13:10 UTCJul 2, 14:20 UTC1h 10m
2026-06-30 AFL1007 - Jun 30, 20:00 UTCJul 1, 05:25 UTC9h 25m
2026-06-30 AFL1019 - Jun 30, 13:00 UTCJun 30, 18:15 UTC5h 15m
2026-06-30 AFL1018 - Jun 30, 09:05 UTCJun 30, 11:10 UTC2h 5m
2026-06-30 AFL1485 - Jun 30, 03:25 UTCJun 30, 04:00 UTC35m
2026-06-28 AFL1019 - Jun 28, 12:55 UTCJun 28, 14:30 UTC1h 35m
2026-06-28 AFL1018 - Jun 28, 10:24 UTCJun 28, 11:14 UTC50m
2026-06-28 AFL1485 - Jun 28, 00:55 UTCJun 28, 03:55 UTC3h 0m
2026-06-27 AFL1583 - Jun 27, 08:14 UTCJun 27, 08:35 UTC20m
2026-06-26 AFL1019 - Jun 26, 12:55 UTCJun 26, 14:15 UTC1h 20m
2026-06-26 AFL1018 - Jun 26, 10:25 UTCJun 26, 11:14 UTC50m
2026-06-26 AFL1018 SVO → SVO Jun 26, 09:05 UTCJun 26, 09:20 UTC15m
2026-06-26 AFL1451 - Jun 26, 01:20 UTCJun 26, 01:45 UTC25m
2026-06-25 AFL1450 - Jun 25, 23:24 UTCJun 25, 23:55 UTC30m
2026-06-25 AFL1324 SVO → MMK Jun 25, 12:50 UTCJun 25, 13:05 UTC15m
2026-06-24 AFL1886 SVO → SVO Jun 24, 06:45 UTCJun 24, 06:59 UTC15m
2026-06-23 AFL2147 AYT → SVO Jun 23, 15:09 UTCJun 23, 17:34 UTC2h 25m
2026-06-23 AFL2146 - Jun 23, 12:40 UTCJun 23, 13:15 UTC35m
2026-06-22 AFL1325 MMK → SVO Jun 22, 16:54 UTCJun 22, 18:24 UTC1h 30m
2026-06-21 AFL1019 - Jun 21, 13:00 UTCJun 21, 14:05 UTC1h 5m
2026-06-21 AFL1018 - Jun 21, 09:55 UTCJun 21, 11:10 UTC1h 15m
2026-06-21 AFL1485 - Jun 21, 03:14 UTCJun 21, 03:44 UTC30m
2026-06-20 AFL2147 AYT → SVO Jun 20, 15:24 UTCJun 21, 01:19 UTC9h 55m
2026-06-20 AFL2146 - Jun 20, 08:49 UTCJun 20, 13:44 UTC4h 55m
2026-06-17 AFL1426 SVO → CEK Jun 17, 23:25 UTCJun 17, 23:50 UTC25m

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-73727 page for operator, model, and routing details .

Mode-S 151FFF frequently asked

What is Mode-S code 151FFF?
151FFF is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73727.
Where is Mode-S 151FFF registered?
Mode-S code 151FFF is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FFF broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FFF, octal 05217777, decimal 1,384,447.
What flights does 151FFF operate?
Mode-S 151FFF has broadcast 20 distinct callsigns, including AFL1019, AFL1018, AFL1420, AFL2146, AFL1947.