Apparatus

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sensors Mode-S transponder

151E31

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73265 · BOEING 737-800

Hex
151E31
Octal
05217061
Decimal
1,383,985
Country
RU
Tail
RA-73265
Type
B738
No current signal · last broadcast 3h ago
Flights observed
173
Distinct callsigns
20
Country
RU
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 151E31.

Country allocation

The ICAO 24-bit address 151E31 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
DRU543 - 32 2026-07-02
DRU589 - 23 2026-06-29
DRU544 - 23 2026-07-02
DRU598 - 17 2026-07-13
DRU597 - 16 2026-07-12
DRU551 - 11 2026-06-25
DRU590 - 10 2026-06-28
DRU9850 - 4 2026-07-09
DRU552 Alrosa Mirny Air Enterprise 4 2026-04-30
DRU9827 - 3 2026-07-06
DRU604 Alrosa Mirny Air Enterprise 3 2026-06-29
DRU603 - 3 2026-06-29
DRU541 Alrosa Mirny Air Enterprise 3 2026-05-09
DRU9847 - 2 2026-07-04
DRU9828 - 2 2026-06-06
DRU9826 - 2 2026-07-06
DRU9808 - 2 2026-07-05
DRU624 Alrosa Mirny Air Enterprise 2 2026-07-12
DRU623 - 2 2026-07-11
DRU525 - 2 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DRU525 - Jul 14, 09:55 UTCJul 14, 11:30 UTC1h 35m
2026-07-13 DRU598 - Jul 13, 18:35 UTCJul 14, 02:55 UTC8h 20m
2026-07-13 DRU598 - Jul 13, 17:40 UTCJul 13, 18:05 UTC25m
2026-07-12 DRU597 - Jul 12, 21:00 UTCJul 13, 09:15 UTC12h 15m
2026-07-12 DRU624 LED → VKO Jul 12, 18:01 UTCJul 12, 19:25 UTC1h 25m
2026-07-11 DRU623 - Jul 11, 08:15 UTCJul 11, 09:15 UTC1h 0m
2026-07-11 DRU597 - Jul 11, 05:45 UTCJul 11, 06:01 UTC15m
2026-07-10 DRU597 - Jul 10, 18:20 UTCJul 11, 05:05 UTC10h 46m
2026-07-10 DRU598 - Jul 10, 17:35 UTCJul 10, 17:45 UTC10m
2026-07-10 DRU9941 - Jul 10, 06:20 UTCJul 10, 13:30 UTC7h 10m
2026-07-09 DRU9850 - Jul 9, 11:35 UTCJul 9, 15:55 UTC4h 20m
2026-07-08 DRU598 - Jul 8, 18:30 UTCJul 9, 15:55 UTC21h 25m
2026-07-08 DRU598 - Jul 8, 17:50 UTCJul 9, 11:40 UTC17h 50m
2026-07-08 DRU597 - Jul 8, 06:15 UTCJul 8, 06:25 UTC10m
2026-07-08 DRU597 - Jul 8, 03:50 UTCJul 8, 05:20 UTC1h 30m
2026-07-07 DRU597 - Jul 7, 07:40 UTCJul 8, 05:20 UTC21h 40m
2026-07-06 DRU9826 - Jul 6, 22:20 UTCJul 7, 06:00 UTC7h 40m
2026-07-06 DRU9849 - Jul 6, 18:40 UTCJul 6, 19:40 UTC1h 0m
2026-07-06 DRU545 - Jul 6, 16:00 UTCJul 6, 16:50 UTC50m
2026-07-06 DRU9827 - Jul 6, 00:40 UTCJul 6, 06:45 UTC6h 5m
2026-07-05 DRU9808 - Jul 5, 04:40 UTCJul 5, 13:50 UTC9h 10m
2026-07-04 DRU9847 - Jul 4, 01:05 UTCJul 4, 07:30 UTC6h 25m
2026-07-03 DRU9808 - Jul 3, 09:30 UTCJul 3, 18:05 UTC8h 35m
2026-07-03 DRU9847 - Jul 3, 01:15 UTCJul 3, 07:30 UTC6h 15m
2026-07-02 DRU544 - Jul 2, 13:10 UTCJul 2, 15:05 UTC1h 55m
2026-07-02 DRU543 - Jul 2, 08:05 UTCJul 2, 10:10 UTC2h 5m
2026-07-01 DRU598 - Jul 1, 17:40 UTCJul 2, 02:50 UTC9h 10m
2026-06-30 DRU597 - Jun 30, 19:45 UTCJul 1, 06:20 UTC10h 35m
2026-06-30 DRU544 - Jun 30, 13:05 UTCJun 30, 15:00 UTC1h 55m
2026-06-30 DRU544 - Jun 30, 07:55 UTCJun 30, 09:50 UTC1h 55m
2026-06-29 DRU589 - Jun 29, 20:04 UTCJun 30, 02:40 UTC6h 35m
2026-06-29 DRU604 AER → OVB Jun 29, 12:39 UTCJun 29, 13:14 UTC35m
2026-06-29 DRU603 - Jun 29, 10:15 UTCJun 29, 10:55 UTC40m
2026-06-28 DRU590 - Jun 28, 19:55 UTCJun 29, 02:35 UTC6h 40m
2026-06-27 DRU9841 OVB → OVB Jun 27, 15:49 UTCJun 27, 21:10 UTC5h 20m
2026-06-26 DRU598 - Jun 26, 18:04 UTCJun 27, 11:09 UTC17h 5m
2026-06-26 DRU543 - Jun 26, 08:10 UTCJun 26, 10:10 UTC2h 0m
2026-06-25 DRU551 - Jun 25, 20:30 UTCJun 26, 03:29 UTC7h 0m
2026-06-25 DRU544 VKO → OVB Jun 25, 12:54 UTCJun 25, 14:44 UTC1h 50m
2026-06-25 DRU543 - Jun 25, 08:04 UTCJun 25, 10:04 UTC2h 0m
2026-06-24 DRU551 - Jun 24, 20:44 UTCJun 25, 03:40 UTC6h 55m
2026-06-23 DRU551 - Jun 23, 20:34 UTCJun 24, 03:40 UTC7h 5m
2026-06-23 DRU544 VKO → OVB Jun 23, 13:09 UTCJun 23, 14:59 UTC1h 50m
2026-06-23 DRU543 - Jun 23, 09:29 UTCJun 23, 11:35 UTC2h 5m
2026-06-22 DRU551 - Jun 22, 20:30 UTCJun 23, 03:54 UTC7h 25m
2026-06-22 DRU544 VKO → OVB Jun 22, 13:05 UTCJun 22, 14:49 UTC1h 45m
2026-06-21 DRU597 - Jun 21, 18:00 UTCJun 22, 06:15 UTC12h 15m
2026-06-19 DRU597 MJZ → VKO Jun 19, 17:34 UTCJun 20, 05:54 UTC12h 20m
2026-06-19 DRU543 - Jun 19, 08:20 UTCJun 19, 11:20 UTC3h 0m
2026-06-18 DRU551 - Jun 18, 20:30 UTCJun 19, 03:34 UTC7h 4m

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-73265 page for operator, model, and routing details .

Mode-S 151E31 frequently asked

What is Mode-S code 151E31?
151E31 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73265.
Where is Mode-S 151E31 registered?
Mode-S code 151E31 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151E31 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151E31, octal 05217061, decimal 1,383,985.
What flights does 151E31 operate?
Mode-S 151E31 has broadcast 20 distinct callsigns, including DRU543, DRU589, DRU544, DRU598, DRU597.