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sensors Mode-S transponder

0ACC9E

ICAO 24-bit transponder address · allocated to Costa Rica

Hex
0ACC9E
Octal
02546236
Decimal
707,742
Country
CR
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
350
Distinct callsigns
1
Country
CR
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 0ACC9E.

Country allocation

The ICAO 24-bit address 0ACC9E 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
HK5463X - 348 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HK5463X - Jul 26, 21:05 UTCJul 26, 21:15 UTC10m
2026-07-26 HK5463X - Jul 26, 20:10 UTCJul 26, 20:25 UTC15m
2026-07-26 HK5463X - Jul 26, 18:40 UTCJul 26, 19:00 UTC20m
2026-07-26 HK5463X - Jul 26, 17:35 UTCJul 26, 18:00 UTC25m
2026-07-26 HK5463X - Jul 26, 16:15 UTCJul 26, 16:40 UTC25m
2026-07-26 HK5463X - Jul 26, 15:05 UTCJul 26, 15:25 UTC20m
2026-07-26 HK5463X - Jul 26, 13:50 UTCJul 26, 14:20 UTC30m
2026-07-26 HK5463X - Jul 26, 12:50 UTCJul 26, 13:10 UTC20m
2026-07-26 HK5463X - Jul 26, 11:45 UTCJul 26, 12:15 UTC30m
2026-07-25 HK5463X - Jul 25, 20:45 UTCJul 25, 21:05 UTC20m
2026-07-25 HK5463X - Jul 25, 19:00 UTCJul 25, 19:40 UTC40m
2026-07-25 HK5463X - Jul 25, 17:25 UTCJul 25, 17:40 UTC15m
2026-07-25 HK5463X - Jul 25, 16:25 UTCJul 25, 16:50 UTC25m
2026-07-25 HK5463X - Jul 25, 14:45 UTCJul 25, 15:25 UTC40m
2026-07-25 HK5463X - Jul 25, 13:00 UTCJul 25, 13:10 UTC10m
2026-07-24 HK5463X - Jul 24, 20:50 UTCJul 24, 21:00 UTC10m
2026-07-24 HK5463X - Jul 24, 17:30 UTCJul 24, 17:45 UTC15m
2026-07-24 HK5463X - Jul 24, 16:20 UTCJul 24, 16:30 UTC10m
2026-07-24 HK5463X - Jul 24, 15:15 UTCJul 24, 15:30 UTC15m
2026-07-24 HK5463X - Jul 24, 13:45 UTCJul 24, 14:10 UTC25m
2026-07-24 HK5463X - Jul 24, 12:30 UTCJul 24, 12:50 UTC20m
2026-07-24 HK5463X - Jul 24, 11:25 UTCJul 24, 11:45 UTC20m
2026-07-23 HK5463X - Jul 23, 21:45 UTCJul 23, 22:00 UTC15m
2026-07-23 HK5463X - Jul 23, 19:25 UTCJul 23, 19:40 UTC15m
2026-07-23 HK5463X - Jul 23, 18:25 UTCJul 23, 18:50 UTC25m
2026-07-23 HK5463X - Jul 23, 17:20 UTCJul 23, 17:35 UTC15m
2026-07-23 HK5463X - Jul 23, 15:15 UTCJul 23, 15:30 UTC15m
2026-07-22 HK5463X - Jul 22, 21:55 UTCJul 22, 22:10 UTC15m
2026-07-20 HK5463X - Jul 20, 11:50 UTCJul 20, 12:05 UTC15m
2026-07-19 HK5463X - Jul 19, 21:05 UTCJul 19, 21:30 UTC25m
2026-07-19 HK5463X - Jul 19, 19:10 UTCJul 19, 20:25 UTC1h 15m
2026-07-19 HK5463X - Jul 19, 18:00 UTCJul 19, 18:25 UTC25m
2026-07-19 HK5463X - Jul 19, 16:15 UTCJul 19, 16:40 UTC25m
2026-07-19 HK5463X - Jul 19, 14:05 UTCJul 19, 15:05 UTC1h 0m
2026-07-19 HK5463X - Jul 19, 12:55 UTCJul 19, 13:05 UTC10m
2026-07-19 HK5463X - Jul 19, 11:45 UTCJul 19, 12:15 UTC30m
2026-07-18 HK5463X - Jul 18, 20:45 UTCJul 18, 21:10 UTC25m
2026-07-18 HK5463X - Jul 18, 19:50 UTCJul 18, 20:05 UTC15m
2026-07-18 HK5463X - Jul 18, 18:15 UTCJul 18, 18:25 UTC10m
2026-07-18 HK5463X - Jul 18, 13:55 UTCJul 18, 14:35 UTC40m
2026-07-18 HK5463X - Jul 18, 12:55 UTCJul 18, 13:05 UTC10m
2026-07-17 HK5463X - Jul 17, 21:15 UTCJul 17, 21:25 UTC10m
2026-07-17 HK5463X - Jul 17, 18:25 UTCJul 17, 18:40 UTC15m
2026-07-17 HK5463X - Jul 17, 17:15 UTCJul 17, 17:40 UTC25m
2026-07-17 HK5463X - Jul 17, 16:10 UTCJul 17, 16:29 UTC20m
2026-07-17 HK5463X - Jul 17, 15:05 UTCJul 17, 15:15 UTC10m
2026-07-16 HK5463X - Jul 16, 20:55 UTCJul 16, 21:19 UTC25m
2026-07-16 HK5463X - Jul 16, 18:40 UTCJul 16, 18:59 UTC20m
2026-07-16 HK5463X - Jul 16, 17:45 UTCJul 16, 18:05 UTC20m
2026-07-16 HK5463X - Jul 16, 15:05 UTCJul 16, 15:14 UTC10m

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 0ACC9E frequently asked

What is Mode-S code 0ACC9E?
0ACC9E is an ICAO 24-bit transponder address. Allocated to Costa Rica.
Where is Mode-S 0ACC9E registered?
Mode-S code 0ACC9E 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 0ACC9E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0ACC9E, octal 02546236, decimal 707,742.
What flights does 0ACC9E operate?
Mode-S 0ACC9E has broadcast 1 distinct callsign, including HK5463X.