Apparatus

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sensors Mode-S transponder

0ACAC0

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-5422 · AIRBUS A-320

Hex
0ACAC0
Octal
02545300
Decimal
707,264
Country
CR
Tail
HK-5422
Type
A320
No current signal · last broadcast 3h ago
Flights observed
310
Distinct callsigns
20
Country
CR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 0ACAC0.

Country allocation

The ICAO 24-bit address 0ACAC0 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
AVA045 - 6 2026-07-01
AVA074 - 5 2026-06-15
AVA023 Avianca - Aerovias Nacionales de Colombia, S.A. 5 2026-06-12
AVA8576 - 4 2026-07-11
AVA8440 - 4 2026-07-04
AVA119 - 4 2026-06-24
AVA061 - 4 2026-06-15
AVA056 Avianca - Aerovias Nacionales de Colombia, S.A. 4 2026-06-15
AVR4849 Avianca Express 3 2026-05-17
AVR4848 - 3 2026-05-17
AVR4811 - 3 2026-07-14
AVA9803 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-04-20
AVA9545 - 3 2026-07-12
AVA9376 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-05-11
AVA8590 - 3 2026-07-09
AVA8577 - 3 2026-07-12
AVA8446 - 3 2026-07-13
AVA8441 - 3 2026-07-04
AVA8429 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-05-18
AVA221 - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AVA8582 - Jul 14, 19:30 UTCJul 14, 19:45 UTC15m
2026-07-14 AVR4811 - Jul 14, 17:40 UTCJul 14, 18:05 UTC25m
2026-07-14 AVA195 - Jul 14, 01:05 UTCJul 14, 01:15 UTC10m
2026-07-13 AVA195 - Jul 13, 21:45 UTCJul 13, 22:35 UTC50m
2026-07-13 AVA194 BOG → TPA Jul 13, 14:15 UTCJul 13, 17:50 UTC3h 35m
2026-07-13 AVA9531 - Jul 13, 12:10 UTCJul 13, 12:25 UTC15m
2026-07-13 AVA8446 - Jul 13, 02:05 UTCJul 13, 02:20 UTC15m
2026-07-12 AVA9220 - Jul 12, 23:50 UTCJul 13, 00:01 UTC10m
2026-07-12 AVA9545 - Jul 12, 18:20 UTCJul 12, 18:40 UTC20m
2026-07-12 AVA9269 - Jul 12, 16:40 UTCJul 12, 16:55 UTC15m
2026-07-12 AVA8484 - Jul 12, 13:40 UTCJul 12, 13:55 UTC15m
2026-07-12 AVA9763 - Jul 12, 12:10 UTCJul 12, 12:25 UTC15m
2026-07-12 AVA8486 - Jul 12, 02:15 UTCJul 12, 02:30 UTC15m
2026-07-12 AVA8577 - Jul 12, 00:05 UTCJul 12, 00:25 UTC20m
2026-07-11 AVA8576 - Jul 11, 21:10 UTCJul 11, 21:25 UTC15m
2026-07-11 AVA209 - Jul 11, 18:45 UTCJul 11, 18:55 UTC10m
2026-07-11 AVA208 - Jul 11, 13:35 UTCJul 11, 15:25 UTC1h 50m
2026-07-11 AVA166 - Jul 11, 03:45 UTCJul 11, 11:15 UTC7h 30m
2026-07-10 AVA073 - Jul 10, 20:35 UTCJul 11, 00:55 UTC4h 20m
2026-07-10 AVA072 BOG → MEX Jul 10, 14:05 UTCJul 10, 18:10 UTC4h 5m
2026-07-10 AVA9346 BOG → BOG Jul 10, 01:05 UTCJul 10, 03:30 UTC2h 25m
2026-07-09 AVA8457 - Jul 9, 20:45 UTCJul 9, 23:30 UTC2h 45m
2026-07-09 AVA8413 - Jul 9, 19:10 UTCJul 9, 19:25 UTC15m
2026-07-09 AVA8590 - Jul 9, 16:05 UTCJul 9, 16:20 UTC15m
2026-07-09 AVA9521 - Jul 9, 14:15 UTCJul 9, 14:30 UTC15m
2026-07-09 AVA8524 - Jul 9, 11:15 UTCJul 9, 11:25 UTC10m
2026-07-08 AVR5225 - Jul 8, 23:25 UTCJul 8, 23:50 UTC25m
2026-07-08 AVA253 - Jul 8, 00:20 UTCJul 8, 00:35 UTC15m
2026-07-07 AVA252 - Jul 7, 18:15 UTCJul 7, 23:25 UTC5h 10m
2026-07-06 AVA9545 - Jul 6, 18:35 UTCJul 6, 18:50 UTC15m
2026-07-06 AVA9269 - Jul 6, 16:35 UTCJul 6, 16:55 UTC20m
2026-07-06 AVA9304 - Jul 6, 02:30 UTCJul 6, 02:45 UTC15m
2026-07-06 AVR4805 - Jul 6, 00:25 UTCJul 6, 00:45 UTC20m
2026-07-05 AVA257 - Jul 5, 17:55 UTCJul 5, 19:25 UTC1h 30m
2026-07-05 AVA268 - Jul 5, 14:40 UTCJul 5, 16:25 UTC1h 45m
2026-07-04 AVA8441 - Jul 4, 23:45 UTCJul 4, 23:55 UTC10m
2026-07-04 AVA8440 - Jul 4, 22:30 UTCJul 4, 22:40 UTC10m
2026-07-04 AVA221 - Jul 4, 14:55 UTCJul 4, 18:20 UTC3h 25m
2026-07-03 AVA8440 - Jul 3, 22:25 UTCJul 3, 22:30 UTC5m
2026-07-03 AVA221 - Jul 3, 14:30 UTCJul 3, 18:25 UTC3h 55m
2026-07-02 AVA8441 - Jul 2, 23:35 UTCJul 2, 23:45 UTC10m
2026-07-02 AVA8440 - Jul 2, 22:30 UTCJul 2, 22:40 UTC10m
2026-07-02 AVA9347 - Jul 2, 17:50 UTCJul 2, 18:00 UTC10m
2026-07-02 AVA9348 - Jul 2, 16:35 UTCJul 2, 16:45 UTC10m
2026-07-01 AVA069 - Jul 1, 22:40 UTCJul 2, 00:10 UTC1h 30m
2026-07-01 AVA045 - Jul 1, 12:05 UTCJul 1, 21:15 UTC9h 10m
2026-07-01 AVA044 - Jul 1, 07:20 UTCJul 1, 09:55 UTC2h 35m
2026-06-29 AVA045 - Jun 29, 11:04 UTCJun 29, 13:19 UTC2h 15m
2026-06-29 AVA044 - Jun 29, 06:29 UTCJun 29, 09:00 UTC2h 30m
2026-06-28 AVA8441 - Jun 28, 23:34 UTCJun 28, 23:44 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.

Prefer a tail-number view? See the HK-5422 page for operator, model, and routing details .

Mode-S 0ACAC0 frequently asked

What is Mode-S code 0ACAC0?
0ACAC0 is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-5422.
Where is Mode-S 0ACAC0 registered?
Mode-S code 0ACAC0 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 0ACAC0 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0ACAC0, octal 02545300, decimal 707,264.
What flights does 0ACAC0 operate?
Mode-S 0ACAC0 has broadcast 20 distinct callsigns, including AVA045, AVA074, AVA023, AVA8576, AVA8440.