Apparatus

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sensors Mode-S transponder

151E55

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73301 · BOEING 737-800

Hex
151E55
Octal
05217125
Decimal
1,384,021
Country
RU
Tail
RA-73301
Type
B738
No current signal · last broadcast 1d ago
Flights observed
70
Distinct callsigns
20
Country
RU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 151E55.

Country allocation

The ICAO 24-bit address 151E55 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
PBD839 Pobeda 5 2026-05-06
PBD859 - 4 2026-04-18
PBD860 Pobeda 3 2026-04-30
PBD840 Pobeda 3 2026-05-06
PBD980 - 2 2026-05-08
PBD894 - 2 2026-05-16
PBD770 - 2 2026-05-04
PBD6836 Pobeda 2 2026-04-21
PBD6834 - 2 2026-05-28
PBD560 - 2 2026-05-13
PBD264 Pobeda 2 2026-05-14
PBD995 Pobeda 1 2026-04-13
PBD994 - 1 2026-05-09
PBD979 - 1 2026-05-08
PBD968 - 1 2026-05-08
PBD942 Pobeda 1 2026-04-24
PBD941 Pobeda 1 2026-05-17
PBD893 - 1 2026-05-12
PBD862 Pobeda 1 2026-05-27
PBD861 Pobeda 1 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 PBD6834 - May 28, 17:30 UTCMay 28, 22:20 UTC4h 50m
2026-05-28 PBD6833 SVO → SVO May 28, 14:40 UTCMay 28, 15:45 UTC1h 5m
2026-05-28 PBD6841 SVO → SVO May 28, 09:15 UTCMay 28, 09:40 UTC25m
2026-05-27 PBD862 IST → IST May 27, 13:15 UTCMay 27, 23:55 UTC10h 40m
2026-05-27 PBD861 IST → IST May 27, 11:35 UTCMay 27, 11:45 UTC10m
2026-05-26 PBD6927 - May 26, 06:39 UTCMay 26, 07:05 UTC25m
2026-05-24 PBD6531 SVO → SVO May 24, 18:45 UTCMay 24, 19:10 UTC25m
2026-05-24 PBD6913 SVO → SVO May 24, 10:40 UTCMay 24, 11:00 UTC20m
2026-05-23 PBD6834 - May 23, 18:20 UTCMay 24, 02:15 UTC7h 55m
2026-05-23 PBD6832 KGD → SVO May 23, 11:00 UTCMay 23, 12:30 UTC1h 30m
2026-05-23 PBD6831 SVO → KGD May 23, 08:05 UTCMay 23, 09:10 UTC1h 5m
2026-05-21 PBD6569 - May 21, 22:25 UTCMay 21, 22:35 UTC10m
2026-05-20 PBD6925 SVO → SVO May 20, 16:20 UTCMay 20, 16:50 UTC30m
2026-05-20 PBD6864 GSV → GSV May 20, 13:30 UTCMay 20, 13:50 UTC20m
2026-05-20 PBD330 GSV → GSV May 20, 06:35 UTCMay 20, 06:45 UTC10m
2026-05-18 PBD602 - May 18, 14:55 UTCMay 18, 15:35 UTC40m
2026-05-17 PBD941 IST → IST May 17, 16:45 UTCMay 17, 17:01 UTC15m
2026-05-16 PBD894 - May 16, 17:45 UTCMay 17, 08:15 UTC14h 30m
2026-05-15 PBD856 - May 15, 12:30 UTCMay 16, 00:10 UTC11h 39m
2026-05-15 PBD855 VKO → VKO May 15, 11:25 UTCMay 15, 11:35 UTC10m
2026-05-14 PBD264 KGD → VKO May 14, 11:20 UTCMay 14, 13:05 UTC1h 45m
2026-05-13 PBD894 - May 13, 17:00 UTCMay 14, 09:50 UTC16h 50m
2026-05-13 PBD560 - May 13, 00:50 UTCMay 13, 01:25 UTC35m
2026-05-12 PBD893 LED → LED May 12, 14:55 UTCMay 12, 15:50 UTC55m
2026-05-12 PBD570 - May 12, 03:25 UTCMay 12, 03:45 UTC20m
2026-05-11 PBD617 GSV → GSV May 11, 19:20 UTCMay 11, 19:25 UTC5m
2026-05-09 PBD994 - May 9, 14:55 UTCMay 9, 17:00 UTC2h 5m
2026-05-08 PBD968 - May 8, 22:55 UTCMay 8, 23:25 UTC30m
2026-05-08 PBD256 - May 8, 17:20 UTCMay 8, 18:40 UTC1h 20m
2026-05-08 PBD255 - May 8, 15:30 UTCMay 8, 16:10 UTC40m
2026-05-08 PBD980 - May 8, 09:14 UTCMay 8, 09:34 UTC20m
2026-05-08 PBD980 - May 8, 04:34 UTCMay 8, 06:35 UTC2h 0m
2026-05-08 PBD979 - May 8, 02:35 UTCMay 8, 02:59 UTC25m
2026-05-06 PBD840 AYT → AYT May 6, 12:10 UTCMay 6, 18:45 UTC6h 34m
2026-05-06 PBD839 AYT → AYT May 6, 09:05 UTCMay 6, 10:45 UTC1h 40m
2026-05-05 PBD839 AYT → AYT May 5, 14:05 UTCMay 6, 10:45 UTC20h 40m
2026-05-04 PBD770 - May 4, 10:10 UTCMay 4, 10:20 UTC10m
2026-05-03 PBD770 - May 3, 10:05 UTCMay 3, 10:15 UTC10m
2026-05-01 PBD264 KGD → VKO May 1, 10:35 UTCMay 1, 20:40 UTC10h 5m
2026-05-01 PBD835 VKO → VKO May 1, 09:20 UTCMay 1, 09:40 UTC20m
2026-04-30 PBD860 AYT → AYT Apr 30, 13:20 UTCMay 1, 08:40 UTC19h 20m
2026-04-28 PBD6919 SVO → SVO Apr 28, 15:30 UTCApr 28, 16:00 UTC30m
2026-04-28 PBD6828 LED → LED Apr 28, 13:10 UTCApr 28, 14:10 UTC1h 0m
2026-04-28 PBD560 - Apr 28, 01:00 UTCApr 28, 01:35 UTC35m
2026-04-27 PBD509 LED → LED Apr 27, 10:50 UTCApr 27, 12:00 UTC1h 10m
2026-04-27 PBD6821 SVO → SVO Apr 27, 08:45 UTCApr 27, 09:40 UTC55m
2026-04-24 PBD942 IST → IST Apr 24, 16:40 UTCApr 24, 16:50 UTC10m
2026-04-23 PBD6905 SVO → SVO Apr 23, 05:15 UTCApr 23, 05:40 UTC25m
2026-04-22 PBD6561 SVO → SVO Apr 22, 22:00 UTCApr 22, 22:20 UTC20m
2026-04-22 PBD6944 - Apr 22, 14:15 UTCApr 22, 14:30 UTC15m

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-73301 page for operator, model, and routing details .

Mode-S 151E55 frequently asked

What is Mode-S code 151E55?
151E55 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73301.
Where is Mode-S 151E55 registered?
Mode-S code 151E55 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151E55 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151E55, octal 05217125, decimal 1,384,021.
What flights does 151E55 operate?
Mode-S 151E55 has broadcast 20 distinct callsigns, including PBD839, PBD859, PBD860, PBD840, PBD980.