Apparatus

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sensors Mode-S transponder

151E38

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73272 · BOEING 777-200

Hex
151E38
Octal
05217070
Decimal
1,383,992
Country
RU
Tail
RA-73272
Type
B772
No current signal · last broadcast Jul 26, 06:50 UTC
Flights observed
165
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 06:50 UTC

Last known position

Most recent position reported by Mode-S 151E38.

Country allocation

The ICAO 24-bit address 151E38 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
KAR3542 Kar-Air 23 2026-07-22
KAR3546 - 19 2026-07-14
KAR3519 Kar-Air 14 2026-07-25
KAR3434 Kar-Air 9 2026-07-18
KAR3545 - 8 2026-07-16
KAR3520 - 8 2026-07-02
KAR3658 - 7 2026-07-16
KAR3646 Kar-Air 6 2026-07-22
KAR3645 Kar-Air 6 2026-06-27
KAR3548 Kar-Air 6 2026-07-19
KAR3515 - 6 2026-06-26
KAR3433 Kar-Air 6 2026-07-17
KAR3660 Kar-Air 5 2026-07-12
KAR3659 Kar-Air 5 2026-07-24
KAR3541 Kar-Air 5 2026-07-24
KAR3516 Kar-Air 5 2026-05-21
KAR3547 - 3 2026-06-24
KAR3538 - 3 2026-07-17
KAR3478 Kar-Air 3 2026-06-22
KAR3680 - 2 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 KAR3519 KJA → HKT Jul 25, 22:35 UTCJul 26, 06:50 UTC8h 16m
2026-07-25 KAR3519 KJA → HKT Jul 25, 07:05 UTCJul 26, 06:00 UTC22h 55m
2026-07-25 KAR3519 KJA → HKT Jul 25, 00:50 UTCJul 26, 00:00 UTC23h 10m
2026-07-24 KAR3659 IKT → CXR Jul 24, 12:05 UTCJul 25, 07:30 UTC19h 25m
2026-07-24 KAR3659 IKT → CXR Jul 24, 11:55 UTCJul 25, 07:30 UTC19h 35m
2026-07-24 KAR3659 IKT → CXR Jul 24, 06:15 UTCJul 25, 01:10 UTC18h 55m
2026-07-24 KAR3541 LED → CXR Jul 24, 01:50 UTCJul 24, 12:05 UTC10h 15m
2026-07-22 KAR3542 CXR → LED Jul 22, 22:35 UTCJul 23, 15:30 UTC16h 55m
2026-07-22 KAR3646 HKT → OVB Jul 22, 03:05 UTCJul 22, 18:45 UTC15h 40m
2026-07-21 KAR3680 - Jul 21, 07:55 UTCJul 21, 23:45 UTC15h 50m
2026-07-21 KAR3680 - Jul 21, 03:35 UTCJul 21, 23:45 UTC20h 10m
2026-07-19 KAR3548 CXR → SVO Jul 19, 18:05 UTCJul 20, 01:45 UTC7h 40m
2026-07-19 KAR3548 CXR → SVO Jul 19, 02:20 UTCJul 20, 01:45 UTC23h 25m
2026-07-18 KAR3434 HKT → SVX Jul 18, 10:00 UTCJul 19, 02:40 UTC16h 40m
2026-07-18 KAR3434 HKT → SVX Jul 18, 04:05 UTCJul 19, 02:40 UTC22h 35m
2026-07-17 KAR3433 SVX → HKT Jul 17, 23:25 UTCJul 18, 12:10 UTC12h 46m
2026-07-17 KAR3433 SVX → HKT Jul 17, 16:04 UTCJul 18, 12:10 UTC20h 6m
2026-07-17 KAR3433 SVX → HKT Jul 17, 11:10 UTCJul 18, 10:00 UTC22h 51m
2026-07-17 KAR3433 SVX → HKT Jul 17, 06:25 UTCJul 18, 05:15 UTC22h 51m
2026-07-17 KAR3538 - Jul 17, 02:05 UTCJul 17, 23:39 UTC21h 35m
2026-07-17 KAR3657 OVB → CXR Jul 17, 01:39 UTCJul 17, 23:39 UTC22h 0m
2026-07-16 KAR3658 - Jul 16, 08:00 UTCJul 16, 20:29 UTC12h 30m
2026-07-16 KAR3545 SVO → SVO Jul 16, 00:10 UTCJul 16, 00:15 UTC5m
2026-07-14 KAR3546 - Jul 14, 22:10 UTCJul 15, 07:40 UTC9h 29m
2026-07-14 KAR3546 - Jul 14, 10:05 UTCJul 15, 07:40 UTC21h 34m
2026-07-14 KAR3546 - Jul 14, 08:50 UTCJul 15, 07:40 UTC22h 49m
2026-07-14 KAR3519 - Jul 14, 02:35 UTCJul 14, 22:30 UTC19h 55m
2026-07-14 KAR3519 - Jul 14, 01:30 UTCJul 14, 22:30 UTC21h 0m
2026-07-13 KAR3519 - Jul 13, 12:40 UTCJul 14, 10:05 UTC21h 25m
2026-07-13 KAR3519 - Jul 13, 07:10 UTCJul 14, 03:15 UTC20h 5m
2026-07-12 KAR3660 CXR → IKT Jul 12, 18:10 UTCJul 13, 12:55 UTC18h 45m
2026-07-12 KAR3660 CXR → IKT Jul 12, 10:05 UTCJul 13, 07:30 UTC21h 25m
2026-07-11 KAR3542 CXR → LED Jul 11, 17:15 UTCJul 12, 10:15 UTC17h 0m
2026-07-11 KAR3542 CXR → LED Jul 11, 12:35 UTCJul 12, 10:15 UTC21h 40m
2026-07-11 KAR3542 CXR → LED Jul 11, 02:05 UTCJul 11, 18:00 UTC15h 55m
2026-07-07 KAR3548 - Jul 7, 15:30 UTCJul 8, 00:25 UTC8h 55m
2026-07-05 KAR3434 - Jul 5, 18:05 UTCJul 6, 13:30 UTC19h 25m
2026-07-05 KAR3434 - Jul 5, 17:50 UTCJul 6, 13:30 UTC19h 40m
2026-07-05 KAR3433 - Jul 5, 12:50 UTCJul 6, 11:50 UTC23h 0m
2026-07-05 KAR3657 - Jul 5, 00:10 UTCJul 5, 18:15 UTC18h 5m
2026-07-04 KAR3658 - Jul 4, 08:00 UTCJul 4, 19:50 UTC11h 50m
2026-07-02 KAR3546 - Jul 2, 22:05 UTCJul 3, 07:35 UTC9h 30m
2026-07-02 KAR3546 - Jul 2, 06:15 UTCJul 3, 06:00 UTC23h 45m
2026-07-02 KAR3520 - Jul 2, 05:05 UTCJul 2, 22:40 UTC17h 35m
2026-07-02 KAR3520 - Jul 2, 00:05 UTCJul 2, 22:40 UTC22h 35m
2026-07-01 KAR3520 - Jul 1, 10:05 UTCJul 2, 06:45 UTC20h 40m
2026-07-01 KAR3520 - Jul 1, 09:35 UTCJul 2, 06:45 UTC21h 10m
2026-07-01 KAR3519 KJA → HKT Jul 1, 04:05 UTCJul 2, 01:45 UTC21h 40m
2026-06-30 KAR3659 IKT → CXR Jun 30, 12:05 UTCJul 1, 10:05 UTC22h 0m
2026-06-29 KAR3541 - Jun 29, 23:14 UTCJun 30, 12:25 UTC13h 10m

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-73272 page for operator, model, and routing details .

Mode-S 151E38 frequently asked

What is Mode-S code 151E38?
151E38 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73272.
Where is Mode-S 151E38 registered?
Mode-S code 151E38 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151E38 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 06:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151E38, octal 05217070, decimal 1,383,992.
What flights does 151E38 operate?
Mode-S 151E38 has broadcast 20 distinct callsigns, including KAR3542, KAR3546, KAR3519, KAR3434, KAR3545.