Apparatus

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sensors Mode-S transponder

1506A8

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-67240 · BOMBARDIER Regional Jet CRJ-200

Hex
1506A8
Octal
05203250
Decimal
1,377,960
Country
RU
Tail
RA-67240
Type
CRJ2
No current signal · last broadcast 3d ago
Flights observed
34
Distinct callsigns
14
Country
RU
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 1506A8.

Country allocation

The ICAO 24-bit address 1506A8 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 14 distinct

Callsign Airline Flights Last seen
SSF52 Severstal 7 2026-06-12
SSF55 Severstal 6 2026-06-16
SSF53 Severstal 5 2026-06-09
SSF116 Severstal 4 2026-06-21
SSF503 Severstal 2 2026-06-06
SSF102 Severstal 2 2026-05-21
SSF56 Severstal 1 2026-05-31
SSF255 Severstal 1 2026-05-18
SSF254 Severstal 1 2026-05-29
SSF151 Severstal 1 2026-06-04
SSF142 Severstal 1 2026-06-19
SSF141 Severstal 1 2026-05-24
SSF119 Severstal 1 2026-05-25
SSF107 Severstal 1 2026-05-03

Recent flights last 34

DateFlightRouteTakeoffLandingDuration
2026-06-21 SSF116 VUS → CEE Jun 21, 14:34 UTCJun 21, 14:50 UTC15m
2026-06-19 SSF142 KGD → CEE Jun 19, 14:34 UTCJun 19, 20:59 UTC6h 25m
2026-06-16 SSF55 ARH → MMK Jun 16, 08:55 UTCJun 16, 09:50 UTC55m
2026-06-14 SSF55 ARH → MMK Jun 14, 13:00 UTCJun 14, 14:00 UTC1h 0m
2026-06-12 SSF52 MMK → ARH Jun 12, 15:25 UTCJun 12, 15:45 UTC20m
2026-06-11 SSF52 MMK → ARH Jun 11, 06:55 UTCJun 11, 07:05 UTC10m
2026-06-11 SSF55 ARH → MMK Jun 11, 04:15 UTCJun 11, 05:10 UTC55m
2026-06-10 SSF55 ARH → MMK Jun 10, 07:20 UTCJun 10, 08:20 UTC1h 0m
2026-06-09 SSF52 MMK → ARH Jun 9, 07:55 UTCJun 9, 08:10 UTC15m
2026-06-09 SSF53 ARH → MMK Jun 9, 05:10 UTCJun 9, 06:05 UTC55m
2026-06-08 SSF53 ARH → MMK Jun 8, 08:20 UTCJun 8, 09:25 UTC1h 5m
2026-06-07 SSF52 MMK → ARH Jun 7, 15:45 UTCJun 7, 16:00 UTC15m
2026-06-06 SSF503 SVX → PES Jun 6, 07:25 UTCJun 6, 11:39 UTC4h 15m
2026-06-04 SSF151 CEE → SVO Jun 4, 05:15 UTCJun 4, 05:35 UTC20m
2026-06-01 SSF55 ARH → MMK Jun 1, 12:15 UTCJun 1, 13:15 UTC1h 0m
2026-06-01 SSF52 MMK → ARH Jun 1, 11:10 UTCJun 1, 11:20 UTC10m
2026-06-01 SSF53 ARH → MMK Jun 1, 08:20 UTCJun 1, 09:25 UTC1h 5m
2026-05-31 SSF56 MMK → ARH May 31, 19:55 UTCMay 31, 20:05 UTC10m
2026-05-31 SSF53 ARH → MMK May 31, 16:55 UTCMay 31, 17:50 UTC55m
2026-05-31 SSF52 MMK → ARH May 31, 15:30 UTCMay 31, 15:55 UTC25m
2026-05-29 SSF116 VUS → CEE May 29, 14:35 UTCMay 30, 10:30 UTC19h 55m
2026-05-29 SSF254 PES → DME May 29, 08:50 UTCMay 29, 09:25 UTC35m
2026-05-25 SSF119 CEE → LED May 25, 04:55 UTCMay 25, 05:10 UTC15m
2026-05-24 SSF141 CEE → KGD May 24, 08:00 UTCMay 24, 17:20 UTC9h 20m
2026-05-21 SSF102 MSQ → CEE May 21, 15:20 UTCMay 21, 15:35 UTC15m
2026-05-20 SSF53 ARH → MMK May 20, 14:30 UTCMay 20, 15:05 UTC35m
2026-05-20 SSF52 MMK → ARH May 20, 13:40 UTCMay 20, 13:50 UTC10m
2026-05-18 SSF255 CEE → DME May 18, 08:20 UTCMay 18, 08:45 UTC25m
2026-05-15 SSF116 VUS → CEE May 15, 14:25 UTCMay 15, 14:45 UTC20m
2026-05-10 SSF102 MSQ → CEE May 10, 16:04 UTCMay 10, 16:14 UTC10m
2026-05-08 SSF503 SVX → PES May 8, 14:15 UTCMay 9, 08:15 UTC18h 0m
2026-05-05 SSF55 ARH → MMK May 5, 12:40 UTCMay 5, 13:40 UTC1h 0m
2026-05-03 SSF116 VUS → CEE May 3, 16:30 UTCMay 3, 16:50 UTC20m
2026-05-03 SSF107 MSQ → PES May 3, 08:15 UTCMay 3, 09:25 UTC1h 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-67240 page for operator, model, and routing details .

Mode-S 1506A8 frequently asked

What is Mode-S code 1506A8?
1506A8 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-67240.
Where is Mode-S 1506A8 registered?
Mode-S code 1506A8 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 1506A8 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 1506A8, octal 05203250, decimal 1,377,960.
What flights does 1506A8 operate?
Mode-S 1506A8 has broadcast 14 distinct callsigns, including SSF52, SSF55, SSF53, SSF116, SSF503.