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 Jul 26, 17:20 UTC
Flights observed
152
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 17:20 UTC

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
PBD859 - 5 2026-07-12
PBD839 Pobeda 5 2026-05-06
PBD894 - 4 2026-06-05
PBD893 - 4 2026-07-26
PBD860 - 4 2026-07-12
PBD770 - 4 2026-07-19
PBD6835 - 4 2026-06-26
PBD840 Pobeda 3 2026-05-06
PBD735 - 3 2026-07-18
PBD6836 Pobeda 3 2026-06-26
PBD6834 - 3 2026-07-02
PBD6833 - 3 2026-07-09
PBD264 Pobeda 3 2026-06-11
PBD995 - 2 2026-07-16
PBD994 - 2 2026-06-08
PBD980 - 2 2026-05-08
PBD978 - 2 2026-07-20
PBD968 - 2 2026-07-16
PBD958 - 2 2026-06-29
PBD957 - 2 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PBD893 - Jul 26, 16:55 UTCJul 26, 17:20 UTC25m
2026-07-26 PBD588 KGD → LED Jul 26, 14:05 UTCJul 26, 15:05 UTC1h 0m
2026-07-25 PBD261 VKO → KGD Jul 25, 13:20 UTCJul 25, 18:00 UTC4h 40m
2026-07-22 PBD6512 - Jul 22, 02:15 UTCJul 22, 14:30 UTC12h 15m
2026-07-21 PBD6511 SVO → SVO Jul 21, 22:40 UTCJul 21, 22:50 UTC10m
2026-07-21 PBD942 - Jul 21, 15:25 UTCJul 21, 15:55 UTC30m
2026-07-21 PBD941 IST → IST Jul 21, 13:50 UTCJul 21, 14:10 UTC20m
2026-07-20 PBD978 - Jul 20, 06:20 UTCJul 20, 06:45 UTC25m
2026-07-20 PBD977 - Jul 20, 04:30 UTCJul 20, 04:50 UTC20m
2026-07-19 PBD770 - Jul 19, 09:50 UTCJul 19, 10:20 UTC30m
2026-07-18 PBD736 - Jul 18, 10:40 UTCJul 18, 10:55 UTC15m
2026-07-18 PBD735 - Jul 18, 09:20 UTCJul 18, 09:45 UTC25m
2026-07-17 PBD735 - Jul 17, 13:20 UTCJul 18, 09:45 UTC20h 26m
2026-07-17 PBD735 - Jul 17, 13:10 UTCJul 18, 09:45 UTC20h 36m
2026-07-16 PBD968 - Jul 16, 19:55 UTCJul 16, 20:05 UTC10m
2026-07-16 PBD996 IST → IST Jul 16, 13:00 UTCJul 16, 13:25 UTC25m
2026-07-16 PBD995 - Jul 16, 10:59 UTCJul 16, 11:15 UTC15m
2026-07-15 PBD263 - Jul 15, 09:55 UTCJul 15, 17:45 UTC7h 50m
2026-07-14 PBD836 - Jul 14, 14:15 UTCJul 15, 08:50 UTC18h 34m
2026-07-14 PBD835 - Jul 14, 12:55 UTCJul 14, 13:20 UTC25m
2026-07-13 PBD836 - Jul 13, 09:00 UTCJul 13, 10:45 UTC1h 45m
2026-07-12 PBD860 - Jul 12, 15:20 UTCJul 13, 08:05 UTC16h 45m
2026-07-12 PBD859 - Jul 12, 13:35 UTCJul 12, 14:20 UTC45m
2026-07-10 PBD6826 - Jul 10, 15:50 UTCJul 10, 16:00 UTC10m
2026-07-10 PBD590 - Jul 10, 13:50 UTCJul 10, 14:35 UTC45m
2026-07-09 PBD6833 - Jul 9, 17:55 UTCJul 10, 12:10 UTC18h 15m
2026-07-09 PBD861 - Jul 9, 16:15 UTCJul 9, 16:35 UTC20m
2026-07-06 PBD262 - Jul 6, 17:05 UTCJul 6, 17:55 UTC50m
2026-07-06 PBD612 - Jul 6, 12:45 UTCJul 6, 15:20 UTC2h 35m
2026-07-05 PBD6961 SVO → SVO Jul 5, 04:15 UTCJul 5, 04:50 UTC35m
2026-07-04 PBD978 - Jul 4, 16:50 UTCJul 4, 17:15 UTC25m
2026-07-04 PBD6501 SVO → SVO Jul 4, 07:30 UTCJul 4, 07:35 UTC5m
2026-07-02 PBD6834 - Jul 2, 17:45 UTCJul 2, 18:40 UTC55m
2026-07-02 PBD589 - Jul 2, 15:15 UTCJul 2, 16:05 UTC50m
2026-07-02 PBD590 - Jul 2, 12:55 UTCJul 2, 13:45 UTC50m
2026-07-02 PBD6833 - Jul 2, 10:15 UTCJul 2, 11:10 UTC55m
2026-07-01 PBD6925 SVO → SVO Jul 1, 16:05 UTCJul 1, 16:35 UTC30m
2026-07-01 PBD6826 - Jul 1, 14:20 UTCJul 1, 14:30 UTC10m
2026-07-01 PBD6583 SVO → SVO Jul 1, 07:45 UTCJul 1, 08:00 UTC15m
2026-06-29 PBD6842 - Jun 29, 21:09 UTCJun 29, 21:30 UTC20m
2026-06-29 PBD958 - Jun 29, 15:00 UTCJun 29, 15:24 UTC25m
2026-06-29 PBD957 - Jun 29, 12:55 UTCJun 29, 13:34 UTC40m
2026-06-26 PBD6836 KGD → SVO Jun 26, 14:44 UTCJun 26, 15:39 UTC55m
2026-06-26 PBD6835 - Jun 26, 12:29 UTCJun 26, 13:10 UTC40m
2026-06-25 PBD6835 - Jun 25, 15:20 UTCJun 26, 13:10 UTC21h 50m
2026-06-25 PBD6835 - Jun 25, 14:59 UTCJun 26, 13:10 UTC22h 10m
2026-06-24 PBD6503 SVO → SVO Jun 24, 16:24 UTCJun 24, 16:40 UTC15m
2026-06-24 PBD6901 SVO → SVO Jun 24, 08:14 UTCJun 24, 08:45 UTC30m
2026-06-23 PBD6832 - Jun 23, 19:29 UTCJun 23, 20:24 UTC55m
2026-06-23 PBD6831 SVO → KGD Jun 23, 17:04 UTCJun 23, 17:44 UTC40m

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 Jul 26, 17:20 UTC.
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 PBD859, PBD839, PBD894, PBD893, PBD860.