Apparatus

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sensors Mode-S transponder

0ACCDD

ICAO 24-bit transponder address · allocated to Costa Rica

Hex
0ACCDD
Octal
02546335
Decimal
707,805
Country
CR
No current signal · last broadcast 2h ago
Flights observed
129
Distinct callsigns
1
Country
CR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 0ACCDD.

Country allocation

The ICAO 24-bit address 0ACCDD falls within the block assigned to Costa Rica (CR) by ICAO Annex 10, Volume III. Every aircraft registered in Costa Rica 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 1 distinct

Callsign Airline Flights Last seen
HK5483X - 129 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 HK5483X - Jul 21, 18:35 UTCJul 21, 18:45 UTC10m
2026-07-21 HK5483X - Jul 21, 17:40 UTCJul 21, 18:05 UTC25m
2026-07-21 HK5483X - Jul 21, 16:30 UTCJul 21, 16:50 UTC20m
2026-07-21 HK5483X - Jul 21, 14:55 UTCJul 21, 15:20 UTC25m
2026-07-21 HK5483X - Jul 21, 14:05 UTCJul 21, 14:15 UTC10m
2026-07-21 HK5483X - Jul 21, 12:40 UTCJul 21, 13:00 UTC20m
2026-07-21 HK5483X - Jul 21, 11:40 UTCJul 21, 11:55 UTC15m
2026-07-20 HK5483X - Jul 20, 18:50 UTCJul 20, 19:10 UTC20m
2026-07-20 HK5483X - Jul 20, 14:00 UTCJul 20, 14:20 UTC20m
2026-07-15 HK5483X - Jul 15, 13:05 UTCJul 15, 13:15 UTC10m
2026-07-15 HK5483X - Jul 15, 12:00 UTCJul 15, 12:20 UTC20m
2026-07-14 HK5483X - Jul 14, 22:20 UTCJul 14, 22:35 UTC15m
2026-07-14 HK5483X - Jul 14, 19:45 UTCJul 14, 20:10 UTC25m
2026-07-14 HK5483X - Jul 14, 18:30 UTCJul 14, 18:55 UTC25m
2026-07-14 HK5483X - Jul 14, 17:05 UTCJul 14, 17:20 UTC15m
2026-07-14 HK5483X - Jul 14, 16:05 UTCJul 14, 16:20 UTC15m
2026-07-13 HK5483X - Jul 13, 19:20 UTCJul 13, 19:50 UTC30m
2026-07-13 HK5483X - Jul 13, 18:25 UTCJul 13, 18:40 UTC15m
2026-07-13 HK5483X - Jul 13, 17:20 UTCJul 13, 17:35 UTC15m
2026-07-13 HK5483X - Jul 13, 16:15 UTCJul 13, 16:30 UTC15m
2026-07-13 HK5483X - Jul 13, 15:00 UTCJul 13, 15:20 UTC20m
2026-07-13 HK5483X - Jul 13, 13:45 UTCJul 13, 14:15 UTC30m
2026-07-13 HK5483X - Jul 13, 11:55 UTCJul 13, 12:50 UTC55m
2026-07-12 HK5483X - Jul 12, 20:20 UTCJul 12, 20:40 UTC20m
2026-07-12 HK5483X - Jul 12, 18:50 UTCJul 12, 19:30 UTC40m
2026-07-12 HK5483X - Jul 12, 17:55 UTCJul 12, 18:10 UTC15m
2026-07-12 HK5483X - Jul 12, 12:35 UTCJul 12, 13:01 UTC25m
2026-07-12 HK5483X - Jul 12, 11:35 UTCJul 12, 11:55 UTC20m
2026-07-11 HK5483X - Jul 11, 20:50 UTCJul 11, 21:20 UTC30m
2026-07-11 HK5483X - Jul 11, 19:35 UTCJul 11, 19:55 UTC20m
2026-07-11 HK5483X - Jul 11, 18:30 UTCJul 11, 18:55 UTC25m
2026-07-11 HK5483X - Jul 11, 16:15 UTCJul 11, 16:25 UTC10m
2026-07-11 HK5483X - Jul 11, 14:25 UTCJul 11, 14:40 UTC15m
2026-07-11 HK5483X - Jul 11, 12:45 UTCJul 11, 13:00 UTC15m
2026-07-07 HK5483X - Jul 7, 21:00 UTCJul 7, 21:15 UTC15m
2026-07-07 HK5483X - Jul 7, 18:30 UTCJul 7, 18:55 UTC25m
2026-07-07 HK5483X - Jul 7, 16:15 UTCJul 7, 16:50 UTC35m
2026-07-07 HK5483X - Jul 7, 15:05 UTCJul 7, 15:35 UTC30m
2026-07-07 HK5483X - Jul 7, 14:05 UTCJul 7, 14:20 UTC15m
2026-07-07 HK5483X - Jul 7, 13:05 UTCJul 7, 13:20 UTC15m
2026-07-06 HK5483X - Jul 6, 21:55 UTCJul 6, 22:15 UTC20m
2026-07-06 HK5483X - Jul 6, 20:20 UTCJul 6, 20:45 UTC25m
2026-07-06 HK5483X - Jul 6, 18:55 UTCJul 6, 19:10 UTC15m
2026-07-06 HK5483X - Jul 6, 17:25 UTCJul 6, 17:45 UTC20m
2026-07-06 HK5483X - Jul 6, 16:20 UTCJul 6, 16:35 UTC15m
2026-07-05 HK5483X - Jul 5, 20:20 UTCJul 5, 20:30 UTC10m
2026-07-05 HK5483X - Jul 5, 18:40 UTCJul 5, 19:30 UTC50m
2026-07-04 HK5483X - Jul 4, 19:10 UTCJul 4, 19:35 UTC25m
2026-07-04 HK5483X - Jul 4, 17:55 UTCJul 4, 18:15 UTC20m
2026-07-03 HK5483X - Jul 3, 15:40 UTCJul 3, 16:40 UTC1h 0m

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.

Mode-S 0ACCDD frequently asked

What is Mode-S code 0ACCDD?
0ACCDD is an ICAO 24-bit transponder address. Allocated to Costa Rica.
Where is Mode-S 0ACCDD registered?
Mode-S code 0ACCDD is allocated to Costa Rica (CR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0ACCDD broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0ACCDD, octal 02546335, decimal 707,805.
What flights does 0ACCDD operate?
Mode-S 0ACCDD has broadcast 1 distinct callsign, including HK5483X.