Apparatus

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sensors Mode-S transponder

0AC3CA

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-5282 · ATR-42-600

Hex
0AC3CA
Octal
02541712
Decimal
705,482
Country
CR
Tail
HK-5282
Type
AT46
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
177
Distinct callsigns
20
Country
CR
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 0AC3CA.

Country allocation

The ICAO 24-bit address 0AC3CA 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 20 distinct

Callsign Airline Flights Last seen
EFY6926 EasyFly 7 2026-07-21
EFY6916 - 7 2026-07-25
EFY6925 EasyFly 6 2026-07-20
EFY9011 - 5 2026-06-19
EFY9010 - 5 2026-06-19
EFY7773 - 5 2026-07-14
EFY6915 EasyFly 5 2026-07-25
EFY9035 - 4 2026-06-19
EFY9034 - 4 2026-06-19
EFY9017 EasyFly 4 2026-06-09
EFY8943 - 4 2026-06-18
EFY8942 - 4 2026-06-18
EFY9131 - 3 2026-06-14
EFY9110 EasyFly 3 2026-05-31
EFY9048 - 3 2026-06-16
EFY9045 - 3 2026-06-18
EFY9016 EasyFly 3 2026-06-07
EFY7864 EasyFly 3 2026-07-24
EFY7772 - 3 2026-07-14
EFY6984 - 3 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EFY8989 MTR → EOH Jul 26, 22:05 UTCJul 26, 22:15 UTC10m
2026-07-26 EFY8988 EOH → MTR Jul 26, 20:10 UTCJul 26, 20:20 UTC10m
2026-07-26 EFY7779 - Jul 26, 18:50 UTCJul 26, 19:25 UTC35m
2026-07-26 EFY7778 EOH → TLU Jul 26, 17:10 UTCJul 26, 17:20 UTC10m
2026-07-26 EFY6951 - Jul 26, 16:25 UTCJul 26, 16:35 UTC10m
2026-07-26 EFY6950 - Jul 26, 14:45 UTCJul 26, 14:55 UTC10m
2026-07-25 EFY8979 APO → EOH Jul 25, 21:50 UTCJul 25, 22:00 UTC10m
2026-07-25 EFY8978 EOH → APO Jul 25, 20:15 UTCJul 25, 20:25 UTC10m
2026-07-25 EFY8954 EOH → UIB Jul 25, 17:30 UTCJul 25, 17:35 UTC5m
2026-07-25 EFY6916 - Jul 25, 16:15 UTCJul 25, 16:45 UTC30m
2026-07-25 EFY6915 EOH → CLO Jul 25, 14:20 UTCJul 25, 14:50 UTC30m
2026-07-25 EFY9051 PEI → EOH Jul 25, 13:20 UTCJul 25, 13:40 UTC20m
2026-07-25 EFY9050 EOH → PEI Jul 25, 12:10 UTCJul 25, 12:40 UTC30m
2026-07-24 EFY9059 PEI → EOH Jul 24, 22:00 UTCJul 24, 22:25 UTC25m
2026-07-24 EFY9058 EOH → PEI Jul 24, 20:55 UTCJul 24, 21:25 UTC30m
2026-07-24 EFY7864 EOH → BSC Jul 24, 18:45 UTCJul 24, 18:55 UTC10m
2026-07-24 EFY8973 APO → EOH Jul 24, 14:55 UTCJul 24, 15:05 UTC10m
2026-07-24 EFY8972 EOH → APO Jul 24, 13:20 UTCJul 24, 13:30 UTC10m
2026-07-24 EFY9050 EOH → PEI Jul 24, 11:25 UTCJul 24, 12:45 UTC1h 20m
2026-07-23 EFY7864 EOH → BSC Jul 23, 18:45 UTCJul 23, 18:55 UTC10m
2026-07-23 EFY6975 NQU → EOH Jul 23, 18:05 UTCJul 23, 18:10 UTC5m
2026-07-23 EFY6974 EOH → NQU Jul 23, 16:10 UTCJul 23, 16:20 UTC10m
2026-07-23 EFY8972 EOH → APO Jul 23, 13:45 UTCJul 23, 13:55 UTC10m
2026-07-22 EFY6976 EOH → NQU Jul 22, 20:10 UTCJul 22, 20:20 UTC10m
2026-07-22 EFY7864 - Jul 22, 18:00 UTCJul 22, 18:10 UTC10m
2026-07-22 EFY9157 - Jul 22, 16:10 UTCJul 22, 16:30 UTC20m
2026-07-22 EFY9156 - Jul 22, 14:40 UTCJul 22, 15:00 UTC20m
2026-07-22 EFY9081 - Jul 22, 13:50 UTCJul 22, 14:00 UTC10m
2026-07-21 EFY6977 - Jul 21, 22:45 UTCJul 21, 22:50 UTC5m
2026-07-21 EFY6976 EOH → NQU Jul 21, 21:20 UTCJul 21, 21:30 UTC10m
2026-07-21 EFY6926 CLO → EOH Jul 21, 20:10 UTCJul 21, 20:35 UTC25m
2026-07-21 EFY6915 EOH → CLO Jul 21, 18:15 UTCJul 21, 18:55 UTC40m
2026-07-21 EFY6916 - Jul 21, 17:05 UTCJul 21, 17:35 UTC30m
2026-07-20 EFY6925 EOH → CLO Jul 20, 22:25 UTCJul 20, 22:55 UTC30m
2026-07-20 EFY6926 CLO → EOH Jul 20, 21:20 UTCJul 20, 21:45 UTC25m
2026-07-20 EFY6916 - Jul 20, 17:55 UTCJul 20, 18:25 UTC30m
2026-07-20 EFY6916 - Jul 20, 16:40 UTCJul 20, 17:10 UTC30m
2026-07-19 EFY6925 EOH → CLO Jul 19, 20:25 UTCJul 19, 20:55 UTC30m
2026-07-19 EFY6926 CLO → EOH Jul 19, 19:20 UTCJul 19, 19:50 UTC30m
2026-07-18 EFY6925 EOH → CLO Jul 18, 01:25 UTCJul 18, 01:39 UTC15m
2026-07-17 EFY9059 PEI → EOH Jul 17, 23:45 UTCJul 17, 23:55 UTC10m
2026-07-17 EFY9058 EOH → PEI Jul 17, 22:40 UTCJul 17, 23:10 UTC30m
2026-07-17 EFY6976 EOH → NQU Jul 17, 20:15 UTCJul 17, 20:25 UTC10m
2026-07-17 EFY7865 - Jul 17, 19:30 UTCJul 17, 19:40 UTC10m
2026-07-17 EFY6950 - Jul 17, 14:15 UTCJul 17, 14:24 UTC10m
2026-07-16 EFY6926 - Jul 16, 21:00 UTCJul 16, 21:25 UTC25m
2026-07-16 EFY6915 - Jul 16, 18:05 UTCJul 16, 18:34 UTC30m
2026-07-16 EFY6916 - Jul 16, 16:55 UTCJul 16, 17:25 UTC30m
2026-07-15 EFY6925 - Jul 15, 23:20 UTCJul 15, 23:50 UTC30m
2026-07-15 EFY6926 - Jul 15, 22:30 UTCJul 15, 22:55 UTC25m

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 HK-5282 page for operator, model, and routing details .

Mode-S 0AC3CA frequently asked

What is Mode-S code 0AC3CA?
0AC3CA is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-5282.
Where is Mode-S 0AC3CA registered?
Mode-S code 0AC3CA 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 0AC3CA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0AC3CA, octal 02541712, decimal 705,482.
What flights does 0AC3CA operate?
Mode-S 0AC3CA has broadcast 20 distinct callsigns, including EFY6926, EFY6916, EFY6925, EFY9011, EFY9010.