Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

0ACAC1

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-5424 · AIRBUS A-320

Hex
0ACAC1
Octal
02545301
Decimal
707,265
Country
CR
Tail
HK-5424
Type
A320
No current signal · last broadcast 1h ago
Flights observed
137
Distinct callsigns
20
Country
CR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 0ACAC1.

Country allocation

The ICAO 24-bit address 0ACAC1 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
AVA051 Avianca - Aerovias Nacionales de Colombia, S.A. 5 2026-05-30
AVA007 - 5 2026-05-20
AVA8484 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-05-20
AVA118 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-05-22
AVA048 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-05-30
AVA9554 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-05-24
AVA9445 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-05-30
AVA9376 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-05-14
AVA9335 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-05-28
AVA9269 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-05-20
AVA9218 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-06-03
AVA8503 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-05-24
AVA258 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-05-20
AVA250 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-05-21
AVA235 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-06-05
AVA234 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-06-04
AVA231 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-06-05
AVA230 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-06-05
AVA191 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-05-17
AVA127 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-05 AVA231 SJU → MDE Jun 5, 21:05 UTCJun 5, 22:15 UTC1h 10m
2026-06-05 AVA230 MDE → SJU Jun 5, 18:45 UTCJun 5, 19:05 UTC20m
2026-06-05 AVA235 MEX → MDE Jun 5, 11:20 UTCJun 5, 18:10 UTC6h 50m
2026-06-04 AVA234 MDE → MEX Jun 4, 23:05 UTCJun 5, 08:10 UTC9h 5m
2026-06-04 AVA043 JFK → MDE Jun 4, 11:05 UTCJun 4, 21:25 UTC10h 20m
2026-06-03 AVA042 MDE → JFK Jun 3, 23:00 UTCJun 4, 09:20 UTC10h 20m
2026-06-03 AVA8591 RCH → BOG Jun 3, 21:30 UTCJun 3, 21:45 UTC15m
2026-06-03 AVA9797 CTG → BOG Jun 3, 16:25 UTCJun 3, 16:40 UTC15m
2026-06-03 AVA9530 BOG → CTG Jun 3, 13:40 UTCJun 3, 13:55 UTC15m
2026-06-03 AVA9218 CLO → BOG Jun 3, 11:50 UTCJun 3, 12:00 UTC10m
2026-06-02 AVA039 MIA → CLO Jun 2, 22:00 UTCJun 2, 22:15 UTC15m
2026-06-02 AVA063 JFK → CLO Jun 2, 09:45 UTCJun 2, 19:50 UTC10h 5m
2026-06-01 AVA062 CLO → JFK Jun 1, 21:55 UTCJun 2, 08:15 UTC10h 20m
2026-06-01 AVA038 CLO → MIA Jun 1, 19:20 UTCJun 1, 19:50 UTC30m
2026-05-31 AVA9270 BOG → MDE May 31, 15:20 UTCMay 31, 15:30 UTC10m
2026-05-31 AVA8419 BAQ → BOG May 31, 12:30 UTCMay 31, 12:45 UTC15m
2026-05-30 AVA9527 BOG → CLO May 30, 21:55 UTCMay 30, 22:15 UTC20m
2026-05-30 AVA9524 BOG → BAQ May 30, 17:20 UTCMay 30, 20:30 UTC3h 10m
2026-05-30 AVA9445 ADZ → BOG May 30, 15:50 UTCMay 30, 16:00 UTC10m
2026-05-30 AVA9445 ADZ → BOG May 30, 14:15 UTCMay 30, 14:25 UTC10m
2026-05-30 AVA9774 BOG → SMR May 30, 13:00 UTCMay 30, 13:05 UTC5m
2026-05-30 AVA048 LIM → BOG May 30, 09:00 UTCMay 30, 09:25 UTC25m
2026-05-30 AVA051 BOG → LIM May 30, 00:55 UTCMay 30, 01:10 UTC15m
2026-05-29 AVA051 BOG → LIM May 29, 23:00 UTCMay 29, 23:15 UTC15m
2026-05-29 AVA061 PTY → BOG May 29, 21:05 UTCMay 29, 21:25 UTC20m
2026-05-29 AVA056 BOG → PTY May 29, 18:05 UTCMay 29, 18:15 UTC10m
2026-05-29 AVA9383 MDE → CLO May 29, 15:45 UTCMay 29, 16:00 UTC15m
2026-05-29 AVA153 JFK → MDE May 29, 08:55 UTCMay 29, 11:20 UTC2h 25m
2026-05-29 AVA152 MDE → JFK May 29, 04:05 UTCMay 29, 06:25 UTC2h 20m
2026-05-28 AVA9268 BOG → MDE May 28, 23:05 UTCMay 28, 23:20 UTC15m
2026-05-28 AVR5201 BOG → PEI May 28, 17:50 UTCMay 28, 21:10 UTC3h 20m
2026-05-28 AVA8451 MDE → BOG May 28, 16:05 UTCMay 28, 16:20 UTC15m
2026-05-28 AVA8432 BOG → MDE May 28, 14:00 UTCMay 28, 14:10 UTC10m
2026-05-28 AVA9335 MDE → BOG May 28, 04:10 UTCMay 28, 04:30 UTC20m
2026-05-27 AVA9817 BOG → PEI May 27, 03:50 UTCMay 27, 04:04 UTC15m
2026-05-26 AVR5200 BOG → IPI May 26, 18:24 UTCMay 26, 18:45 UTC20m
2026-05-26 AVA9425 MTR → BOG May 26, 15:54 UTCMay 26, 16:10 UTC15m
2026-05-26 AVA9396 BOG → MTR May 26, 13:19 UTCMay 26, 13:34 UTC15m
2026-05-26 AVA9218 CLO → BOG May 26, 11:44 UTCMay 26, 12:00 UTC15m
2026-05-26 AVA9225 SMR → CLO May 26, 00:24 UTCMay 26, 00:35 UTC10m
2026-05-25 AVA8469 BOG → CLO May 25, 04:05 UTCMay 25, 04:25 UTC20m
2026-05-25 AVA9237 CTG → MDE May 25, 02:35 UTCMay 25, 02:50 UTC15m
2026-05-24 AVA9554 BOG → SMR May 24, 23:45 UTCMay 24, 23:46 UTC1m
2026-05-24 AVA8503 BOG → PEI May 24, 15:45 UTCMay 24, 16:00 UTC15m
2026-05-24 AVA9521 BAQ → BOG May 24, 14:20 UTCMay 24, 14:30 UTC10m
2026-05-24 AVA8524 BOG → BAQ May 24, 11:20 UTCMay 24, 11:30 UTC10m
2026-05-24 AVA048 LIM → BOG May 24, 09:10 UTCMay 24, 09:30 UTC20m
2026-05-24 AVA051 BOG → LIM May 24, 00:40 UTCMay 24, 01:25 UTC45m
2026-05-23 AVA051 BOG → LIM May 23, 23:20 UTCMay 23, 23:35 UTC15m
2026-05-23 AVA127 MIA → BOG May 23, 21:15 UTCMay 23, 21:35 UTC20m

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-5424 page for operator, model, and routing details .

Mode-S 0ACAC1 frequently asked

What is Mode-S code 0ACAC1?
0ACAC1 is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-5424.
Where is Mode-S 0ACAC1 registered?
Mode-S code 0ACAC1 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 0ACAC1 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0ACAC1, octal 02545301, decimal 707,265.
What flights does 0ACAC1 operate?
Mode-S 0ACAC1 has broadcast 20 distinct callsigns, including AVA051, AVA007, AVA8484, AVA118, AVA048.