Apparatus

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sensors Mode-S transponder

151DD9

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73177 · AIRBUS A-321

Hex
151DD9
Octal
05216731
Decimal
1,383,897
Country
RU
Tail
RA-73177
Type
A321
No current signal · last broadcast 1h ago
Flights observed
68
Distinct callsigns
20
Country
RU
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 151DD9.

Country allocation

The ICAO 24-bit address 151DD9 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
AFL1459 Aeroflot Russian Airlines 4 2026-05-28
AFL1458 Aeroflot Russian Airlines 3 2026-05-27
AFL1451 Aeroflot Russian Airlines 3 2026-04-24
AFL1422 Aeroflot Russian Airlines 3 2026-04-25
AFL1208 Aeroflot Russian Airlines 3 2026-05-28
AFL1887 Aeroflot Russian Airlines 2 2026-04-16
AFL1457 Aeroflot Russian Airlines 2 2026-04-18
AFL1456 Aeroflot Russian Airlines 2 2026-04-18
AFL1450 Aeroflot Russian Airlines 2 2026-04-23
AFL1423 - 2 2026-04-13
AFL1318 Aeroflot Russian Airlines 2 2026-05-26
AFL1016 Aeroflot Russian Airlines 2 2026-05-25
AFL1003 Aeroflot Russian Airlines 2 2026-04-17
AFL1886 Aeroflot Russian Airlines 1 2026-04-16
AFL1833 Aeroflot Russian Airlines 1 2026-05-08
AFL1769 Aeroflot Russian Airlines 1 2026-04-29
AFL1689 Aeroflot Russian Airlines 1 2026-05-19
AFL1681 Aeroflot Russian Airlines 1 2026-05-26
AFL1680 Aeroflot Russian Airlines 1 2026-05-26
AFL1638 Aeroflot Russian Airlines 1 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFL1484 SVO → KJA May 29, 21:35 UTCMay 30, 03:55 UTC6h 20m
2026-05-29 AFL1149 GDZ → SVO May 29, 15:20 UTCMay 29, 15:45 UTC25m
2026-05-28 AFL1208 SVO → KRR May 28, 10:25 UTCMay 28, 10:55 UTC30m
2026-05-28 AFL1208 SVO → KRR May 28, 07:35 UTCMay 28, 08:10 UTC35m
2026-05-28 AFL1459 NOZ → SVO May 28, 01:40 UTCMay 28, 02:10 UTC30m
2026-05-27 AFL1458 SVO → NOZ May 27, 16:50 UTCMay 28, 00:00 UTC7h 10m
2026-05-26 AFL1681 NBC → SVO May 26, 14:50 UTCMay 27, 01:39 UTC10h 50m
2026-05-26 AFL1680 SVO → NBC May 26, 12:00 UTCMay 26, 13:15 UTC1h 15m
2026-05-26 AFL1319 MMK → SVO May 26, 07:24 UTCMay 26, 08:45 UTC1h 20m
2026-05-26 AFL1318 SVO → MMK May 26, 03:15 UTCMay 26, 03:40 UTC25m
2026-05-25 AFL1011 KGD → SVO May 25, 20:15 UTCMay 25, 21:54 UTC1h 40m
2026-05-25 AFL1010 SVO → KGD May 25, 14:40 UTCMay 25, 16:55 UTC2h 15m
2026-05-25 AFL1017 KGD → SVO May 25, 10:40 UTCMay 25, 11:50 UTC1h 10m
2026-05-25 AFL1016 SVO → KGD May 25, 07:15 UTCMay 25, 08:35 UTC1h 20m
2026-05-23 AFL1481 KJA → SVO May 23, 12:30 UTCMay 24, 03:20 UTC14h 50m
2026-05-23 AFL1480 SVO → KJA May 23, 03:05 UTCMay 24, 00:35 UTC21h 30m
2026-05-19 AFL1689 OMS → SVO May 19, 13:25 UTCMay 20, 01:00 UTC11h 35m
2026-05-19 AFL1421 CEK → SVO May 19, 03:30 UTCMay 20, 01:00 UTC21h 30m
2026-05-18 AFL1420 SVO → CEK May 18, 19:00 UTCMay 18, 19:30 UTC30m
2026-05-16 AFL1016 SVO → KGD May 16, 07:11 UTCMay 16, 09:21 UTC2h 10m
2026-05-15 AFL1531 TOF → SVO May 15, 01:30 UTCMay 15, 01:50 UTC20m
2026-05-14 AFL1530 SVO → TOF May 14, 23:45 UTCMay 15, 00:05 UTC20m
2026-05-13 AFL1638 SVO → OMS May 13, 21:45 UTCMay 13, 22:05 UTC20m
2026-05-12 AFL1000 SVO → KGD May 12, 05:10 UTCMay 12, 05:55 UTC45m
2026-05-10 AFL1007 KGD → SVO May 10, 19:50 UTCMay 10, 21:40 UTC1h 50m
2026-05-10 AFL1148 SVO → GDZ May 10, 05:55 UTCMay 10, 06:45 UTC50m
2026-05-09 AFL1307 OVB → SVO May 9, 03:25 UTCMay 9, 03:35 UTC10m
2026-05-08 AFL1833 MSQ → SVO May 8, 18:15 UTCMay 8, 18:50 UTC35m
2026-05-08 AFL1417 SVX → SVO May 8, 09:59 UTCMay 8, 10:09 UTC10m
2026-05-07 AFL1318 SVO → MMK May 7, 03:20 UTCMay 7, 03:30 UTC10m
2026-05-04 AFL1072 SVO → KGD May 4, 22:10 UTCMay 4, 22:50 UTC40m
2026-05-02 AFL1018 SVO → KGD May 2, 05:45 UTCMay 2, 13:50 UTC8h 5m
2026-04-30 AFL1459 NOZ → SVO Apr 30, 05:55 UTCApr 30, 06:10 UTC15m
2026-04-30 AFL1459 NOZ → SVO Apr 30, 01:15 UTCApr 30, 01:45 UTC30m
2026-04-29 AFL1769 PEE → SVO Apr 29, 15:40 UTCApr 29, 23:25 UTC7h 44m
2026-04-27 AFL1486 SVO → KJA Apr 27, 09:35 UTCApr 27, 10:00 UTC25m
2026-04-25 AFL1422 SVO → CEK Apr 25, 13:50 UTCApr 25, 18:20 UTC4h 30m
2026-04-25 AFL011 LED → SVO Apr 25, 10:55 UTCApr 25, 11:10 UTC15m
2026-04-25 AFL1555 - Apr 25, 01:05 UTCApr 25, 04:50 UTC3h 45m
2026-04-24 AFL1451 KEJ → SVO Apr 24, 01:10 UTCApr 24, 04:15 UTC3h 5m
2026-04-23 AFL1450 SVO → KEJ Apr 23, 20:20 UTCApr 23, 20:35 UTC15m
2026-04-22 AFL1260 SVO → UFA Apr 22, 18:00 UTCApr 22, 18:35 UTC35m
2026-04-22 AFL1208 SVO → KRR Apr 22, 09:35 UTCApr 22, 10:00 UTC25m
2026-04-21 AFL1451 KEJ → SVO Apr 21, 01:20 UTCApr 21, 04:45 UTC3h 25m
2026-04-20 AFL1451 KEJ → SVO Apr 20, 23:30 UTCApr 20, 23:45 UTC15m
2026-04-20 AFL1450 SVO → KEJ Apr 20, 20:20 UTCApr 20, 20:30 UTC10m
2026-04-20 AFL1324 SVO → SVO Apr 20, 13:00 UTCApr 20, 13:20 UTC20m
2026-04-19 AFL1128 SVO → SVO Apr 19, 16:05 UTCApr 19, 16:25 UTC20m
2026-04-19 AFL1383 HMA → SVO Apr 19, 03:25 UTCApr 19, 03:50 UTC25m
2026-04-18 AFL1382 SVO → HMA Apr 18, 22:35 UTCApr 18, 22:45 UTC10m

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-73177 page for operator, model, and routing details .

Mode-S 151DD9 frequently asked

What is Mode-S code 151DD9?
151DD9 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73177.
Where is Mode-S 151DD9 registered?
Mode-S code 151DD9 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DD9 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DD9, octal 05216731, decimal 1,383,897.
What flights does 151DD9 operate?
Mode-S 151DD9 has broadcast 20 distinct callsigns, including AFL1459, AFL1458, AFL1451, AFL1422, AFL1208.