Apparatus

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sensors Mode-S transponder

151FDB

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73691 · AIRBUS A-320

Hex
151FDB
Octal
05217733
Decimal
1,384,411
Country
RU
Tail
RA-73691
Type
A320
No current signal · last broadcast 24d ago
Flights observed
61
Distinct callsigns
15
Country
RU
Last broadcast
24d ago

Last known position

Most recent position reported by Mode-S 151FDB.

Country allocation

The ICAO 24-bit address 151FDB 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 15 distinct

Callsign Airline Flights Last seen
LLM89 - 20 2026-07-15
LLM189 - 18 2026-07-16
LLM177 Yamal Airlines 4 2026-06-13
LLM485 Yamal Airlines 3 2026-05-25
LLM385 Yamal Airlines 3 2026-05-13
LLM185 Yamal Airlines 3 2026-06-11
LLM90 Yamal Airlines 2 2026-05-29
LLM685 Yamal Airlines 1 2026-05-09
LLM585 Yamal Airlines 1 2026-06-12
LLM486 Yamal Airlines 1 2026-05-25
LLM477 Yamal Airlines 1 2026-06-03
LLM420 - 1 2026-07-17
LLM378 - 1 2026-06-23
LLM190 Yamal Airlines 1 2026-05-30
LLM186 Yamal Airlines 1 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 LLM420 - Jul 17, 14:50 UTCJul 17, 15:20 UTC30m
2026-07-16 LLM189 - Jul 16, 04:10 UTCJul 16, 13:54 UTC9h 45m
2026-07-15 LLM189 - Jul 15, 14:10 UTCJul 16, 10:10 UTC20h 0m
2026-07-15 LLM89 - Jul 15, 04:50 UTCJul 16, 04:45 UTC23h 55m
2026-07-15 LLM89 - Jul 15, 04:25 UTCJul 15, 14:40 UTC10h 15m
2026-07-13 LLM89 NUX → DME Jul 13, 13:25 UTCJul 13, 14:45 UTC1h 20m
2026-07-13 LLM189 - Jul 13, 04:15 UTCJul 13, 05:25 UTC1h 10m
2026-07-10 LLM189 - Jul 10, 04:05 UTCJul 10, 14:25 UTC10h 20m
2026-07-09 LLM89 NUX → DME Jul 9, 13:15 UTCJul 10, 05:25 UTC16h 10m
2026-07-09 LLM189 - Jul 9, 04:50 UTCJul 10, 04:40 UTC23h 50m
2026-07-09 LLM189 - Jul 9, 00:20 UTCJul 9, 14:35 UTC14h 15m
2026-07-08 LLM89 NUX → DME Jul 8, 13:05 UTCJul 9, 05:35 UTC16h 30m
2026-07-08 LLM89 NUX → DME Jul 8, 09:15 UTCJul 9, 05:35 UTC20h 20m
2026-07-08 LLM89 NUX → DME Jul 8, 04:50 UTCJul 9, 04:45 UTC23h 55m
2026-07-08 LLM189 - Jul 8, 04:00 UTCJul 9, 01:05 UTC21h 5m
2026-07-07 LLM89 NUX → DME Jul 7, 14:50 UTCJul 8, 14:30 UTC23h 40m
2026-07-07 LLM189 - Jul 7, 14:25 UTCJul 8, 10:05 UTC19h 40m
2026-07-07 LLM89 NUX → DME Jul 7, 00:00 UTCJul 7, 15:45 UTC15h 45m
2026-07-06 LLM89 NUX → DME Jul 6, 13:10 UTCJul 7, 04:45 UTC15h 35m
2026-07-06 LLM189 - Jul 6, 04:55 UTCJul 7, 04:45 UTC23h 50m
2026-07-06 LLM89 NUX → DME Jul 6, 04:10 UTCJul 7, 01:00 UTC20h 50m
2026-07-05 LLM89 NUX → DME Jul 5, 14:55 UTCJul 6, 14:30 UTC23h 35m
2026-07-05 LLM89 NUX → DME Jul 5, 14:10 UTCJul 6, 05:30 UTC15h 20m
2026-07-05 LLM189 - Jul 5, 04:55 UTCJul 6, 04:45 UTC23h 50m
2026-07-05 LLM189 - Jul 5, 04:10 UTCJul 5, 15:35 UTC11h 25m
2026-07-04 LLM189 - Jul 4, 14:50 UTCJul 5, 14:45 UTC23h 55m
2026-07-04 LLM89 NUX → DME Jul 4, 13:25 UTCJul 5, 05:35 UTC16h 10m
2026-07-04 LLM89 NUX → DME Jul 4, 04:50 UTCJul 5, 04:45 UTC23h 55m
2026-07-04 LLM89 NUX → DME Jul 4, 04:25 UTCJul 4, 14:50 UTC10h 25m
2026-07-03 LLM89 NUX → DME Jul 3, 13:00 UTCJul 4, 04:55 UTC15h 55m
2026-07-03 LLM189 - Jul 3, 04:05 UTCJul 3, 13:30 UTC9h 25m
2026-07-02 LLM89 NUX → DME Jul 2, 13:00 UTCJul 3, 04:40 UTC15h 40m
2026-07-02 LLM189 - Jul 2, 00:50 UTCJul 2, 13:35 UTC12h 45m
2026-07-01 LLM189 - Jul 1, 13:25 UTCJul 2, 04:45 UTC15h 20m
2026-07-01 LLM189 - Jul 1, 04:05 UTCJul 2, 00:50 UTC20h 45m
2026-06-30 LLM89 NUX → DME Jun 30, 13:15 UTCJul 1, 04:30 UTC15h 15m
2026-06-23 LLM378 - Jun 23, 06:44 UTCJun 23, 07:15 UTC30m
2026-06-13 LLM177 TJM → MRV Jun 13, 03:05 UTCJun 13, 13:55 UTC10h 49m
2026-06-12 LLM177 TJM → MRV Jun 12, 09:45 UTCJun 13, 04:05 UTC18h 20m
2026-06-12 LLM177 TJM → MRV Jun 12, 06:50 UTCJun 13, 04:05 UTC21h 15m
2026-06-12 LLM585 NOJ → AER Jun 12, 06:15 UTCJun 13, 04:05 UTC21h 50m
2026-06-11 LLM185 TJM → AER Jun 11, 02:05 UTCJun 11, 03:05 UTC1h 0m
2026-06-09 LLM185 TJM → AER Jun 9, 01:55 UTCJun 9, 03:05 UTC1h 10m
2026-06-06 LLM177 TJM → MRV Jun 6, 01:50 UTCJun 6, 16:10 UTC14h 20m
2026-06-04 LLM186 AER → TJM Jun 4, 17:45 UTCJun 4, 18:20 UTC35m
2026-06-03 LLM477 SLY → MRV Jun 3, 15:15 UTCJun 3, 16:10 UTC55m
2026-05-30 LLM190 SVO → NUX May 30, 07:55 UTCMay 30, 08:15 UTC20m
2026-05-30 LLM189 NUX → SVO May 30, 03:55 UTCMay 30, 04:25 UTC30m
2026-05-29 LLM90 DME → NUX May 29, 22:40 UTCMay 29, 23:05 UTC25m
2026-05-29 LLM189 NUX → SVO May 29, 00:05 UTCMay 29, 13:55 UTC13h 50m

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-73691 page for operator, model, and routing details .

Mode-S 151FDB frequently asked

What is Mode-S code 151FDB?
151FDB is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73691.
Where is Mode-S 151FDB registered?
Mode-S code 151FDB is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FDB broadcasting right now?
No active broadcast right now. Last signal was 24d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FDB, octal 05217733, decimal 1,384,411.
What flights does 151FDB operate?
Mode-S 151FDB has broadcast 15 distinct callsigns, including LLM89, LLM189, LLM177, LLM485, LLM385.