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 8h ago
Flights observed
138
Distinct callsigns
20
Country
CR
Last broadcast
8h ago

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
EFY9011 - 5 2026-06-19
EFY9010 - 5 2026-06-19
EFY7773 - 5 2026-07-14
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
EFY6926 - 4 2026-07-16
EFY6925 EasyFly 4 2026-07-18
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
EFY7772 - 3 2026-07-14
EFY6984 - 3 2026-06-19
EFY6916 - 3 2026-07-16
EFY6915 - 3 2026-07-16
EFY9165 EasyFly 2 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-15 EFY6915 - Jul 15, 17:45 UTCJul 15, 18:20 UTC35m
2026-07-15 EFY6916 - Jul 15, 16:40 UTCJul 15, 17:10 UTC30m
2026-07-14 EFY6925 - Jul 14, 22:50 UTCJul 14, 23:10 UTC20m
2026-07-14 EFY6926 - Jul 14, 21:25 UTCJul 14, 21:50 UTC25m
2026-07-14 EFY7773 - Jul 14, 18:30 UTCJul 14, 18:45 UTC15m
2026-07-14 EFY7772 - Jul 14, 17:20 UTCJul 14, 17:30 UTC10m
2026-07-14 EFY6913 - Jul 14, 11:50 UTCJul 14, 12:20 UTC30m
2026-07-14 EFY6912 - Jul 14, 10:50 UTCJul 14, 11:15 UTC25m
2026-07-11 EFY7773 - Jul 11, 21:10 UTCJul 11, 21:25 UTC15m
2026-07-11 EFY7772 - Jul 11, 19:45 UTCJul 11, 20:00 UTC15m
2026-07-10 EFY6915 - Jul 10, 17:50 UTCJul 10, 18:10 UTC20m
2026-07-09 EFY6925 - Jul 9, 22:25 UTCJul 9, 22:35 UTC10m
2026-07-09 EFY6926 - Jul 9, 21:30 UTCJul 9, 21:40 UTC10m
2026-07-09 EFY6916 - Jul 9, 17:50 UTCJul 9, 18:00 UTC10m
2026-06-19 EFY6984 - Jun 19, 20:49 UTCJun 19, 21:09 UTC20m
2026-06-19 EFY7837 - Jun 19, 19:39 UTCJun 19, 19:59 UTC20m
2026-06-19 EFY7836 - Jun 19, 18:09 UTCJun 19, 18:30 UTC20m
2026-06-19 EFY9035 - Jun 19, 16:49 UTCJun 19, 17:09 UTC20m
2026-06-19 EFY9034 - Jun 19, 14:24 UTCJun 19, 14:49 UTC25m
2026-06-19 EFY9011 - Jun 19, 12:39 UTCJun 19, 12:59 UTC20m
2026-06-19 EFY9010 - Jun 19, 10:50 UTCJun 19, 10:59 UTC10m
2026-06-19 EFY9027 - Jun 19, 00:40 UTCJun 19, 00:55 UTC15m
2026-06-18 EFY9026 - Jun 18, 23:05 UTCJun 18, 23:15 UTC10m
2026-06-18 EFY8943 - Jun 18, 21:50 UTCJun 18, 22:05 UTC15m
2026-06-18 EFY8942 - Jun 18, 19:40 UTCJun 18, 20:00 UTC20m
2026-06-18 EFY9045 - Jun 18, 18:30 UTCJun 18, 18:55 UTC25m
2026-06-18 EFY9044 - Jun 18, 17:00 UTCJun 18, 17:15 UTC15m
2026-06-17 EFY6933 - Jun 17, 19:55 UTCJun 17, 20:10 UTC15m
2026-06-17 EFY6932 - Jun 17, 18:05 UTCJun 17, 18:20 UTC15m
2026-06-17 EFY9035 FLA → BOG Jun 17, 16:45 UTCJun 17, 17:15 UTC30m
2026-06-17 EFY9034 BOG → FLA Jun 17, 14:20 UTCJun 17, 14:40 UTC20m
2026-06-17 EFY9011 EYP → BOG Jun 17, 12:30 UTCJun 17, 13:05 UTC35m
2026-06-17 EFY9010 - Jun 17, 10:55 UTCJun 17, 11:10 UTC15m
2026-06-16 EFY9048 - Jun 16, 01:40 UTCJun 16, 01:55 UTC15m
2026-06-16 EFY8943 - Jun 16, 00:20 UTCJun 16, 00:35 UTC15m
2026-06-15 EFY8942 BOG → UIB Jun 15, 20:20 UTCJun 15, 20:34 UTC15m
2026-06-15 EFY9045 NVA → BOG Jun 15, 18:55 UTCJun 15, 19:20 UTC25m
2026-06-15 EFY9165 PPN → BOG Jun 15, 15:59 UTCJun 15, 16:09 UTC10m
2026-06-15 EFY9164 - Jun 15, 13:40 UTCJun 15, 13:54 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 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 8h ago.
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 EFY9011, EFY9010, EFY7773, EFY9035, EFY9034.