Apparatus

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sensors Mode-S transponder

46D2EF

ICAO 24-bit transponder address · allocated to Greece

Currently assigned to SX-TWO · ATR-42-500

Hex
46D2EF
Octal
21551357
Decimal
4,641,519
Country
GR
Tail
SX-TWO
Type
AT45
Broadcasting now · callsign SEH690 · 15,025 ft
Flights observed
256
Distinct callsigns
20
Country
GR
Last broadcast
12h ago

Current position

46D2EF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 46D2EF 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
SEH5ML Sky Express 21 2026-05-29
SEH4LO - 19 2026-05-29
SEH031 Sky Express 12 2026-05-20
SEH030 Sky Express 12 2026-05-20
SEH020 Sky Express 12 2026-05-26
SEH010 Sky Express 12 2026-05-21
SEH021 Sky Express 10 2026-05-26
SEH3XD Sky Express 9 2026-05-14
SEH4DT Sky Express 7 2026-05-14
SEH3TH Sky Express 7 2026-05-27
SEH041 Sky Express 7 2026-05-27
SEH091 Sky Express 6 2026-05-14
SEH090 Sky Express 6 2026-05-14
SEH081 Sky Express 6 2026-05-14
SEH011 Sky Express 6 2026-05-21
SEH5KA Sky Express 5 2026-05-17
SEH4AK Sky Express 5 2026-05-17
SEH1RP Sky Express 5 2026-05-25
SEH1AZ Sky Express 5 2026-05-05
SEH7ML Sky Express 4 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SEH7ML MLO → ATH May 29, 16:15 UTCMay 29, 16:35 UTC20m
2026-05-29 SEH6LO - May 29, 15:05 UTCMay 29, 15:25 UTC20m
2026-05-29 SEH5ML MLO → ATH May 29, 10:40 UTCMay 29, 11:05 UTC25m
2026-05-29 SEH4LO - May 29, 09:40 UTCMay 29, 10:05 UTC25m
2026-05-28 SEH5ML MLO → ATH May 28, 10:50 UTCMay 28, 11:15 UTC25m
2026-05-28 SEH691 TIA → ATH May 28, 09:40 UTCMay 28, 10:05 UTC25m
2026-05-28 SEH691 TIA → ATH May 28, 07:30 UTCMay 28, 08:40 UTC1h 10m
2026-05-28 SEH690 ATH → TIA May 28, 05:05 UTCMay 28, 06:30 UTC1h 25m
2026-05-27 SEH3TH ZTH → ATH May 27, 14:35 UTCMay 27, 14:50 UTC15m
2026-05-27 SEH3TH ZTH → ATH May 27, 14:15 UTCMay 27, 14:30 UTC15m
2026-05-27 SEH3TH ZTH → ATH May 27, 13:05 UTCMay 27, 13:50 UTC45m
2026-05-27 SEH040 PVK → EFL May 27, 12:20 UTCMay 27, 12:30 UTC10m
2026-05-27 SEH041 EFL → PVK May 27, 08:35 UTCMay 27, 08:55 UTC20m
2026-05-27 SEH041 EFL → PVK May 27, 07:45 UTCMay 27, 07:55 UTC10m
2026-05-27 SEH2ZT ATH → ZTH May 27, 06:15 UTCMay 27, 07:00 UTC46m
2026-05-26 SEH5ML MLO → ATH May 26, 10:39 UTCMay 26, 11:00 UTC20m
2026-05-26 SEH4LO - May 26, 09:35 UTCMay 26, 09:55 UTC20m
2026-05-26 SEH021 JSY → ATH May 26, 08:24 UTCMay 26, 08:45 UTC20m
2026-05-26 SEH020 ATH → JSY May 26, 07:24 UTCMay 26, 07:45 UTC20m
2026-05-25 SEH8LH LXS → ATH May 25, 10:15 UTCMay 25, 11:05 UTC50m
2026-05-25 SEH050 MJT → LXS May 25, 08:55 UTCMay 25, 09:20 UTC25m
2026-05-25 SEH050 MJT → LXS May 25, 07:55 UTCMay 25, 08:10 UTC15m
2026-05-25 SEH050 MJT → LXS May 25, 05:35 UTCMay 25, 06:05 UTC30m
2026-05-25 SEH1RP HER → RHO May 25, 04:20 UTCMay 25, 04:40 UTC20m
2026-05-24 SEH2KT RHO → HER May 24, 17:20 UTCMay 24, 17:45 UTC25m
2026-05-24 SEH1RP HER → RHO May 24, 15:55 UTCMay 24, 16:20 UTC25m
2026-05-23 SEH2KT RHO → HER May 23, 07:15 UTCMay 23, 07:20 UTC5m
2026-05-23 SEH1RP HER → RHO May 23, 06:05 UTCMay 23, 06:30 UTC25m
2026-05-22 SEH2KT RHO → HER May 22, 17:20 UTCMay 22, 17:55 UTC35m
2026-05-22 SEH1RP HER → RHO May 22, 16:20 UTCMay 22, 16:35 UTC15m
2026-05-21 SEH071 KGS → RHO May 21, 14:30 UTCMay 21, 15:00 UTC30m
2026-05-21 SEH071 - May 21, 13:35 UTCMay 21, 13:45 UTC10m
2026-05-21 SEH010 ATH → JTY May 21, 10:50 UTCMay 21, 11:25 UTC35m
2026-05-21 SEH011 JTY → ATH May 21, 08:45 UTCMay 21, 09:25 UTC40m
2026-05-21 SEH070 LRS → JTY May 21, 07:55 UTCMay 21, 08:05 UTC10m
2026-05-21 SEH070 LRS → JTY May 21, 05:30 UTCMay 21, 05:50 UTC20m
2026-05-21 SEH1RP HER → RHO May 21, 04:40 UTCMay 21, 05:00 UTC20m
2026-05-20 SEH2KT RHO → HER May 20, 17:55 UTCMay 20, 18:05 UTC10m
2026-05-20 SEH051 SMI → RHO May 20, 16:40 UTCMay 20, 17:15 UTC35m
2026-05-20 SEH051 SMI → RHO May 20, 15:40 UTCMay 20, 15:50 UTC10m
2026-05-20 SEH051 SMI → RHO May 20, 14:25 UTCMay 20, 14:35 UTC10m
2026-05-20 SEH051 SMI → RHO May 20, 13:25 UTCMay 20, 13:50 UTC25m
2026-05-20 SEH7TL ATH → ATH May 20, 12:10 UTCMay 20, 12:45 UTC35m
2026-05-20 SEH5ML MLO → ATH May 20, 10:40 UTCMay 20, 10:55 UTC15m
2026-05-20 SEH4LO - May 20, 09:30 UTCMay 20, 09:50 UTC20m
2026-05-20 SEH021 JSY → ATH May 20, 08:20 UTCMay 20, 08:45 UTC25m
2026-05-20 SEH020 ATH → JSY May 20, 07:20 UTCMay 20, 07:40 UTC20m
2026-05-20 SEH031 JKL → ATH May 20, 05:40 UTCMay 20, 06:25 UTC45m
2026-05-20 SEH030 ATH → JKL May 20, 04:15 UTCMay 20, 04:55 UTC41m
2026-05-19 SEH4JA JKH → ATH May 19, 12:55 UTCMay 19, 13:25 UTC30m

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

Mode-S 46D2EF frequently asked

What is Mode-S code 46D2EF?
46D2EF is an ICAO 24-bit transponder address. Allocated to Greece. Assigned to SX-TWO.
Where is Mode-S 46D2EF registered?
Mode-S code 46D2EF is allocated to Greece (GR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 46D2EF broadcasting right now?
Yes. Mode-S 46D2EF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 46D2EF, octal 21551357, decimal 4,641,519.
What flights does 46D2EF operate?
Mode-S 46D2EF has broadcast 20 distinct callsigns, including SEH5ML, SEH4LO, SEH031, SEH030, SEH020.