sensors Mode-S transponder

46BC54

ICAO 24-bit transponder address · allocated to Greece

Currently assigned to SX-OBT

Hex
46BC54
Octal
21536124
Decimal
4,635,732
Country
GR
Tail
SX-OBT
Type
AT76
No current signal · last broadcast 12h ago
Flights observed
14
Distinct callsigns
11
Country
GR
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 46BC54.

Country allocation

The ICAO 24-bit address 46BC54 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 11 distinct

Callsign Airline Flights Last seen
OAL1JK - 2 2026-04-13
OAL099 - 2 2026-04-13
OAL098 - 2 2026-04-13
OAL040 - 1 2026-04-13
AEE7XS - 1 2026-04-12
AEE6LS - 1 2026-04-12
AEE3MK - 1 2026-04-14
AEE273 - 1 2026-04-14
AEE272 - 1 2026-04-14
AEE245 - 1 2026-04-13
AEE244 - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 AEE273 - Apr 14, 09:40 UTCApr 14, 10:15 UTC35m
2026-04-14 AEE272 - Apr 14, 07:55 UTCApr 14, 08:20 UTC25m
2026-04-14 AEE3MK - Apr 14, 06:10 UTCApr 14, 06:35 UTC25m
2026-04-13 AEE245 - Apr 13, 14:20 UTCApr 13, 14:55 UTC35m
2026-04-13 AEE244 - Apr 13, 13:00 UTCApr 13, 13:35 UTC35m
2026-04-13 OAL1JK - Apr 13, 11:55 UTCApr 13, 12:05 UTC10m
2026-04-13 OAL1JK - Apr 13, 11:35 UTCApr 13, 12:05 UTC30m
2026-04-13 OAL098 - Apr 13, 09:25 UTCApr 13, 10:00 UTC35m
2026-04-13 OAL098 - Apr 13, 08:20 UTCApr 13, 08:50 UTC30m
2026-04-13 OAL099 - Apr 13, 06:55 UTCApr 13, 07:30 UTC35m
2026-04-13 OAL099 - Apr 13, 05:35 UTCApr 13, 06:15 UTC40m
2026-04-13 OAL040 - Apr 13, 04:20 UTCApr 13, 04:40 UTC20m
2026-04-12 AEE7XS - Apr 12, 18:35 UTCApr 12, 19:20 UTC45m
2026-04-12 AEE6LS - Apr 12, 17:15 UTCApr 12, 17:30 UTC15m

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

Mode-S 46BC54 frequently asked

What is Mode-S code 46BC54?
46BC54 is an ICAO 24-bit transponder address. Allocated to Greece. Assigned to SX-OBT.
Where is Mode-S 46BC54 registered?
Mode-S code 46BC54 is allocated to Greece (GR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 46BC54 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 46BC54, octal 21536124, decimal 4,635,732.
What flights does 46BC54 operate?
Mode-S 46BC54 has broadcast 11 distinct callsigns, including OAL1JK, OAL099, OAL098, OAL040, AEE7XS.