Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

46D1CF

ICAO 24-bit transponder address · allocated to Greece

Currently assigned to SX-TNO · ATR-72-600

Hex
46D1CF
Octal
21550717
Decimal
4,641,231
Country
GR
Tail
SX-TNO
Type
AT76
No current signal · last broadcast Jul 26, 20:50 UTC
Flights observed
867
Distinct callsigns
20
Country
GR
Last broadcast
Jul 26, 20:50 UTC

Last known position

Most recent position reported by Mode-S 46D1CF.

Country allocation

The ICAO 24-bit address 46D1CF falls within the block assigned to Greece (GR) by ICAO Annex 10, Volume III. Every aircraft registered in Greece 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
SEH311 - 15 2026-07-17
SEH1SM - 15 2026-07-17
SEH6CA Sky Express 14 2026-07-25
SEH691 - 14 2026-07-21
SEH5CF - 14 2026-07-25
SEH6MT - 13 2026-07-23
SEH690 Sky Express 13 2026-07-21
SEH5AM Sky Express 13 2026-07-23
SEH9TR - 12 2026-07-21
SEH6HS Sky Express 12 2026-07-26
SEH5TR - 12 2026-07-23
SEH5LA - 12 2026-07-18
SEH5JT - 12 2026-07-23
SEH5DQ - 12 2026-07-22
SEH4EL - 12 2026-07-18
SEH4AK Sky Express 12 2026-07-24
SEH9JT - 11 2026-07-21
SEH7JT - 11 2026-07-26
SEH6SF Sky Express 11 2026-07-26
SEH5KA Sky Express 11 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SEH6HS SOF → ATH Jul 26, 19:30 UTCJul 26, 20:45 UTC1h 15m
2026-07-26 SEH6SF ATH → SOF Jul 26, 17:05 UTCJul 26, 18:25 UTC1h 20m
2026-07-26 SEH353 JTR → ATH Jul 26, 15:25 UTCJul 26, 16:00 UTC35m
2026-07-26 SEH7JT - Jul 26, 14:00 UTCJul 26, 14:35 UTC35m
2026-07-26 SEH8LH LXS → ATH Jul 26, 10:05 UTCJul 26, 10:45 UTC40m
2026-07-26 SEH7TL ATH → ATH Jul 26, 08:40 UTCJul 26, 09:15 UTC35m
2026-07-26 SEH3TS KIT → ATH Jul 26, 06:45 UTCJul 26, 07:20 UTC35m
2026-07-26 SEH2TS ATH → KIT Jul 26, 05:15 UTCJul 26, 05:40 UTC25m
2026-07-25 SEH6CA CFU → ATH Jul 25, 19:40 UTCJul 25, 20:15 UTC35m
2026-07-25 SEH5CF - Jul 25, 17:30 UTCJul 25, 18:05 UTC35m
2026-07-25 SEH479 PAS → ATH Jul 25, 16:05 UTCJul 25, 16:30 UTC25m
2026-07-25 SEH478 ATH → PAS Jul 25, 14:45 UTCJul 25, 15:10 UTC25m
2026-07-25 SEH2GK SKG → ATH Jul 25, 12:50 UTCJul 25, 13:50 UTC1h 0m
2026-07-25 SEH571 PAS → SKG Jul 25, 10:10 UTCJul 25, 11:20 UTC1h 10m
2026-07-25 SEH472 ATH → PAS Jul 25, 08:50 UTCJul 25, 09:20 UTC30m
2026-07-25 SEH453 JIK → ATH Jul 25, 07:25 UTCJul 25, 08:00 UTC35m
2026-07-25 SEH452 ATH → JIK Jul 25, 05:45 UTCJul 25, 06:15 UTC30m
2026-07-24 SEH433 JSI → ATH Jul 24, 20:50 UTCJul 24, 21:15 UTC25m
2026-07-24 SEH432 ATH → JSI Jul 24, 19:40 UTCJul 24, 20:10 UTC30m
2026-07-24 SEH477 PAS → ATH Jul 24, 18:00 UTCJul 24, 18:40 UTC40m
2026-07-24 SEH476 ATH → PAS Jul 24, 17:00 UTCJul 24, 17:25 UTC25m
2026-07-24 SEH5KA KGS → ATH Jul 24, 14:40 UTCJul 24, 15:35 UTC55m
2026-07-24 SEH4AK ATH → KGS Jul 24, 13:10 UTCJul 24, 13:55 UTC45m
2026-07-24 SEH237 - Jul 24, 11:35 UTCJul 24, 12:00 UTC25m
2026-07-24 SEH236 ATH → JMK Jul 24, 10:05 UTCJul 24, 10:35 UTC30m
2026-07-24 SEH3TS KIT → ATH Jul 24, 08:30 UTCJul 24, 08:55 UTC25m
2026-07-24 SEH2TS ATH → KIT Jul 24, 07:10 UTCJul 24, 07:45 UTC35m
2026-07-24 SEH471 PAS → ATH Jul 24, 05:50 UTCJul 24, 06:15 UTC25m
2026-07-24 SEH470 ATH → PAS Jul 24, 04:35 UTCJul 24, 05:00 UTC25m
2026-07-23 SEH6MT - Jul 23, 19:20 UTCJul 23, 19:55 UTC35m
2026-07-23 SEH5AM ATH → JMK Jul 23, 18:15 UTCJul 23, 18:50 UTC35m
2026-07-23 SEH4VS - Jul 23, 15:10 UTCJul 23, 16:00 UTC50m
2026-07-23 SEH3LE ATH → MJT Jul 23, 13:55 UTCJul 23, 14:35 UTC40m
2026-07-23 SEH5TR - Jul 23, 12:15 UTCJul 23, 12:45 UTC30m
2026-07-23 SEH5JT - Jul 23, 10:50 UTCJul 23, 11:20 UTC30m
2026-07-23 SEH5SK JSI → ATH Jul 23, 09:15 UTCJul 23, 09:50 UTC35m
2026-07-23 SEH4SK ATH → JSI Jul 23, 08:10 UTCJul 23, 08:35 UTC25m
2026-07-23 SEH409 JNX → ATH Jul 23, 06:15 UTCJul 23, 06:45 UTC30m
2026-07-23 SEH408 ATH → JNX Jul 23, 04:50 UTCJul 23, 05:15 UTC25m
2026-07-22 SEH6DT AXD → ATH Jul 22, 20:30 UTCJul 22, 21:35 UTC1h 5m
2026-07-22 SEH5XD ATH → AXD Jul 22, 18:40 UTCJul 22, 19:45 UTC1h 5m
2026-07-22 SEH6CQ CHQ → ATH Jul 22, 16:45 UTCJul 22, 17:40 UTC55m
2026-07-22 SEH5DQ - Jul 22, 14:55 UTCJul 22, 15:40 UTC45m
2026-07-22 SEH5TR - Jul 22, 13:00 UTCJul 22, 13:40 UTC40m
2026-07-22 SEH5JT - Jul 22, 11:35 UTCJul 22, 12:00 UTC25m
2026-07-22 SEH408 ATH → JNX Jul 22, 04:55 UTCJul 22, 05:20 UTC25m
2026-07-21 SEH9TR - Jul 21, 19:20 UTCJul 21, 19:50 UTC30m
2026-07-21 SEH9JT - Jul 21, 18:05 UTCJul 21, 18:40 UTC35m
2026-07-21 SEH6CQ CHQ → ATH Jul 21, 16:30 UTCJul 21, 17:15 UTC45m
2026-07-21 SEH5DQ ATH → CHQ Jul 21, 15:00 UTCJul 21, 15:50 UTC50m

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 SX-TNO page for operator, model, and routing details .

Mode-S 46D1CF frequently asked

What is Mode-S code 46D1CF?
46D1CF is an ICAO 24-bit transponder address. Allocated to Greece. Assigned to SX-TNO.
Where is Mode-S 46D1CF registered?
Mode-S code 46D1CF is allocated to Greece (GR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 46D1CF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 46D1CF, octal 21550717, decimal 4,641,231.
What flights does 46D1CF operate?
Mode-S 46D1CF has broadcast 20 distinct callsigns, including SEH311, SEH1SM, SEH6CA, SEH691, SEH5CF.