Apparatus

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sensors Mode-S transponder

151FB5

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73653 · BOEING 737-800

Hex
151FB5
Octal
05217665
Decimal
1,384,373
Country
RU
Tail
RA-73653
Type
B738
No current signal · last broadcast Jul 26, 06:30 UTC
Flights observed
127
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 06:30 UTC

Last known position

Most recent position reported by Mode-S 151FB5.

Country allocation

The ICAO 24-bit address 151FB5 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
AUL505 Aeroflot-Nord 13 2026-07-20
AUL506 - 12 2026-07-25
AUL508 Aeroflot-Nord 7 2026-07-14
AUL513 Aeroflot-Nord 6 2026-07-12
AUL504 - 6 2026-07-21
AUL251 Aeroflot-Nord 5 2026-07-25
AUL581 Aeroflot-Nord 4 2026-05-12
AUL534 Aeroflot-Nord 4 2026-07-26
AUL517 Aeroflot-Nord 4 2026-07-18
AUL252 Aeroflot-Nord 4 2026-06-13
AUL574 - 3 2026-06-26
AUL547 Aeroflot-Nord 3 2026-07-15
AUL541 - 3 2026-06-20
AUL532 Aeroflot-Nord 3 2026-07-23
AUL507 - 3 2026-07-08
AUL592 Aeroflot-Nord 2 2026-05-15
AUL545 - 2 2026-07-08
AUL537 Aeroflot-Nord 2 2026-07-09
AUL533 Aeroflot-Nord 2 2026-07-25
AUL531 - 2 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AUL534 KGD → LED Jul 26, 05:55 UTCJul 26, 06:30 UTC35m
2026-07-26 AUL104 CEK → KGD Jul 26, 03:30 UTCJul 26, 04:05 UTC35m
2026-07-25 AUL533 LED → KGD Jul 25, 16:55 UTCJul 25, 17:40 UTC45m
2026-07-25 AUL506 - Jul 25, 13:30 UTCJul 25, 14:15 UTC45m
2026-07-25 AUL251 SVO → SVO Jul 25, 10:50 UTCJul 25, 11:30 UTC40m
2026-07-23 AUL532 KUF → LED Jul 23, 11:25 UTCJul 24, 06:40 UTC19h 15m
2026-07-21 AUL504 - Jul 21, 20:00 UTCJul 22, 04:50 UTC8h 50m
2026-07-21 AUL503 - Jul 21, 17:10 UTCJul 21, 17:25 UTC15m
2026-07-21 AUL151 ARH → LED Jul 21, 14:50 UTCJul 21, 15:25 UTC35m
2026-07-20 AUL505 SVO → SCW Jul 20, 06:35 UTCJul 20, 07:20 UTC45m
2026-07-18 AUL517 LED → MMK Jul 18, 12:15 UTCJul 18, 13:05 UTC50m
2026-07-18 AUL527 LED → CEK Jul 18, 01:25 UTCJul 18, 01:34 UTC10m
2026-07-17 AUL514 VOZ → LED Jul 17, 14:24 UTCJul 17, 15:25 UTC1h 0m
2026-07-15 AUL547 LED → AER Jul 15, 12:40 UTCJul 15, 13:05 UTC25m
2026-07-14 AUL508 MMK → LED Jul 14, 15:20 UTCJul 15, 11:10 UTC19h 49m
2026-07-14 AUL151 ARH → LED Jul 14, 14:50 UTCJul 15, 11:10 UTC20h 19m
2026-07-12 AUL513 LED → KGD Jul 12, 17:15 UTCJul 12, 18:30 UTC1h 15m
2026-07-11 AUL595 LED → GDZ Jul 11, 05:50 UTCJul 11, 06:05 UTC15m
2026-07-09 AUL537 LED → KZN Jul 9, 16:20 UTCJul 9, 16:35 UTC15m
2026-07-08 AUL545 - Jul 8, 12:35 UTCJul 9, 06:40 UTC18h 5m
2026-07-08 AUL508 MMK → LED Jul 8, 10:55 UTCJul 8, 11:10 UTC15m
2026-07-08 AUL507 - Jul 8, 07:20 UTCJul 8, 07:45 UTC25m
2026-07-04 AUL513 LED → KGD Jul 4, 14:40 UTCJul 4, 15:35 UTC55m
2026-07-04 AUL147 ARH → LED Jul 4, 13:05 UTCJul 4, 13:25 UTC20m
2026-07-04 AUL148 LED → ARH Jul 4, 10:05 UTCJul 4, 11:10 UTC1h 5m
2026-07-03 AUL518 MMK → LED Jul 3, 15:20 UTCJul 3, 15:35 UTC15m
2026-07-02 AUL517 LED → MMK Jul 2, 18:35 UTCJul 3, 12:20 UTC17h 45m
2026-06-29 AUL504 - Jun 29, 20:40 UTCJun 30, 11:20 UTC14h 41m
2026-06-29 AUL513 LED → KGD Jun 29, 13:39 UTCJun 29, 14:25 UTC45m
2026-06-28 AUL547 LED → AER Jun 28, 14:45 UTCJun 28, 15:34 UTC50m
2026-06-26 AUL574 - Jun 26, 23:00 UTCJun 27, 05:04 UTC6h 5m
2026-06-26 AUL518 MMK → LED Jun 26, 17:19 UTCJun 26, 17:35 UTC15m
2026-06-26 AUL9102 - Jun 26, 11:05 UTCJun 26, 14:35 UTC3h 30m
2026-06-24 AUL506 - Jun 24, 15:44 UTCJun 24, 16:40 UTC55m
2026-06-24 AUL176 KGD → ARH Jun 24, 08:55 UTCJun 24, 13:54 UTC5h 0m
2026-06-24 AUL505 - Jun 24, 06:04 UTCJun 24, 06:50 UTC45m
2026-06-23 AUL530 KGD → MMK Jun 23, 14:39 UTCJun 23, 20:15 UTC5h 35m
2026-06-22 AUL530 KGD → MMK Jun 22, 20:19 UTCJun 23, 16:05 UTC19h 45m
2026-06-22 AUL514 VOZ → LED Jun 22, 15:05 UTCJun 22, 16:20 UTC1h 15m
2026-06-22 AUL513 LED → KGD Jun 22, 12:19 UTCJun 22, 13:35 UTC1h 15m
2026-06-22 AUL508 MMK → LED Jun 22, 04:09 UTCJun 22, 11:04 UTC6h 55m
2026-06-20 AUL541 - Jun 20, 12:24 UTCJun 20, 12:45 UTC20m
2026-06-19 AUL585 LED → KRR Jun 19, 11:09 UTCJun 19, 11:34 UTC25m
2026-06-19 AUL506 KGD → LED Jun 19, 08:40 UTCJun 19, 09:55 UTC1h 15m
2026-06-19 AUL505 - Jun 19, 06:24 UTCJun 19, 07:09 UTC45m
2026-06-18 AUL541 LED → LED Jun 18, 13:00 UTCJun 18, 14:25 UTC1h 25m
2026-06-18 AUL531 LED → LED Jun 18, 06:40 UTCJun 18, 07:00 UTC20m
2026-06-16 AUL537 LED → KZN Jun 16, 16:35 UTCJun 16, 17:00 UTC25m
2026-06-15 AUL506 KGD → LED Jun 15, 09:30 UTCJun 15, 10:20 UTC50m
2026-06-14 AUL574 - Jun 14, 22:05 UTCJun 15, 07:25 UTC9h 19m

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-73653 page for operator, model, and routing details .

Mode-S 151FB5 frequently asked

What is Mode-S code 151FB5?
151FB5 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73653.
Where is Mode-S 151FB5 registered?
Mode-S code 151FB5 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151FB5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 06:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151FB5, octal 05217665, decimal 1,384,373.
What flights does 151FB5 operate?
Mode-S 151FB5 has broadcast 20 distinct callsigns, including AUL505, AUL506, AUL508, AUL513, AUL504.