Apparatus

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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
Broadcasting now · callsign AVA8441 · 32,175 ft
Flights observed
275
Distinct callsigns
20
Country
CR
Last broadcast
2h ago

Current position

0ACAC1 is currently broadcasting. Map zoomed to live position.

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 - 7 2026-07-17
AVA258 - 6 2026-07-02
AVA007 - 5 2026-05-20
AVA118 - 4 2026-06-28
AVA008 - 4 2026-07-11
AVA005 - 4 2026-07-11
AVA9418 - 3 2026-07-17
AVA9348 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-07-19
AVA8503 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-07-17
AVA8484 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-05-20
AVA145 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-06-14
AVA127 - 3 2026-07-18
AVA119 - 3 2026-06-28
AVA063 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-06-19
AVA062 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-06-18
AVA048 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-05-30
AVA032 Avianca - Aerovias Nacionales de Colombia, S.A. 3 2026-06-11
AVA004 - 3 2026-06-10
AVA9817 - 2 2026-07-06
AVA9782 - 2 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 AVA8440 MDE → ADZ Jul 20, 23:05 UTCJul 20, 23:15 UTC10m
2026-07-20 AVA9451 SMR → MDE Jul 20, 19:40 UTCJul 20, 20:20 UTC40m
2026-07-20 AVA9446 MDE → SMR Jul 20, 18:00 UTCJul 20, 18:35 UTC35m
2026-07-20 AVA8466 PEI → MDE Jul 20, 12:05 UTCJul 20, 16:20 UTC4h 15m
2026-07-20 AVA8448 CLO → MDE Jul 20, 10:25 UTCJul 20, 10:35 UTC10m
2026-07-20 AVA9439 MDE → CLO Jul 20, 03:05 UTCJul 20, 03:25 UTC20m
2026-07-20 AVA9567 CTG → MDE Jul 20, 01:00 UTCJul 20, 01:40 UTC40m
2026-07-19 AVA8502 MDE → CTG Jul 19, 23:25 UTCJul 20, 00:05 UTC40m
2026-07-19 AVA8517 BOG → PEI Jul 19, 20:50 UTCJul 19, 21:40 UTC50m
2026-07-19 AVA8516 MDE → RCH Jul 19, 18:50 UTCJul 19, 19:30 UTC40m
2026-07-19 AVA9347 ADZ → MDE Jul 19, 16:05 UTCJul 19, 17:30 UTC1h 25m
2026-07-19 AVA9348 MDE → ADZ Jul 19, 14:55 UTCJul 19, 15:05 UTC10m
2026-07-19 AVA9348 MDE → ADZ Jul 19, 13:40 UTCJul 19, 14:20 UTC40m
2026-07-18 AVA9326 - Jul 18, 23:15 UTCJul 18, 23:30 UTC15m
2026-07-18 AVA127 - Jul 18, 18:15 UTCJul 18, 21:25 UTC3h 10m
2026-07-18 AVA126 - Jul 18, 12:50 UTCJul 18, 16:05 UTC3h 15m
2026-07-18 AVA009 - Jul 18, 06:55 UTCJul 18, 10:00 UTC3h 5m
2026-07-18 AVA006 BOG → MIA Jul 18, 00:10 UTCJul 18, 03:25 UTC3h 16m
2026-07-17 AVA9418 - Jul 17, 21:55 UTCJul 17, 22:29 UTC35m
2026-07-17 AVA8474 PEI → SMR Jul 17, 17:30 UTCJul 17, 20:50 UTC3h 20m
2026-07-17 AVA8503 BOG → PEI Jul 17, 15:55 UTCJul 17, 16:19 UTC25m
2026-07-17 AVA9521 BAQ → BOG Jul 17, 14:24 UTCJul 17, 14:39 UTC15m
2026-07-17 AVA051 - Jul 17, 01:09 UTCJul 17, 01:20 UTC10m
2026-07-16 AVA051 - Jul 16, 23:10 UTCJul 16, 23:25 UTC15m
2026-07-16 AVA056 BOG → BOG Jul 16, 18:00 UTCJul 16, 21:25 UTC3h 25m
2026-07-16 AVA9425 - Jul 16, 15:30 UTCJul 16, 16:00 UTC30m
2026-07-16 AVA237 - Jul 16, 01:10 UTCJul 16, 04:10 UTC3h 0m
2026-07-15 AVA066 BOG → FLL Jul 15, 19:55 UTCJul 15, 23:10 UTC3h 15m
2026-07-15 AVA067 FLL → BOG Jul 15, 15:10 UTCJul 15, 18:25 UTC3h 15m
2026-07-14 AVA066 BOG → FLL Jul 14, 19:55 UTCJul 14, 23:05 UTC3h 9m
2026-07-14 AVA8598 BOG → BOG Jul 14, 15:30 UTCJul 14, 18:30 UTC3h 0m
2026-07-14 AVA9342 - Jul 14, 04:40 UTCJul 14, 04:55 UTC15m
2026-07-14 AVA9325 - Jul 14, 03:10 UTCJul 14, 03:30 UTC20m
2026-07-13 AVA159 - Jul 13, 21:45 UTCJul 14, 01:15 UTC3h 30m
2026-07-13 AVA9717 - Jul 13, 19:50 UTCJul 13, 20:00 UTC10m
2026-07-13 AVA9302 - Jul 13, 15:40 UTCJul 13, 15:55 UTC15m
2026-07-13 AVA8584 - Jul 13, 11:20 UTCJul 13, 14:10 UTC2h 50m
2026-07-13 AVA9313 - Jul 13, 02:30 UTCJul 13, 02:45 UTC15m
2026-07-13 AVA9308 - Jul 13, 00:35 UTCJul 13, 00:50 UTC15m
2026-07-12 AVA129 - Jul 12, 19:35 UTCJul 12, 19:45 UTC10m
2026-07-12 AVA128 - Jul 12, 14:10 UTCJul 12, 14:30 UTC20m
2026-07-12 AVA128 - Jul 12, 13:05 UTCJul 12, 13:20 UTC15m
2026-07-12 AVA166 - Jul 12, 04:10 UTCJul 12, 11:35 UTC7h 25m
2026-07-12 AVA167 - Jul 12, 03:10 UTCJul 12, 03:20 UTC10m
2026-07-11 AVA069 CUN → BOG Jul 11, 22:10 UTCJul 12, 01:10 UTC3h 0m
2026-07-11 AVA068 - Jul 11, 17:40 UTCJul 11, 20:40 UTC3h 0m
2026-07-11 AVA005 - Jul 11, 12:30 UTCJul 11, 15:40 UTC3h 10m
2026-07-11 AVA008 - Jul 11, 07:05 UTCJul 11, 07:35 UTC30m
2026-07-10 AVA137 - Jul 10, 20:25 UTCJul 11, 01:10 UTC4h 45m
2026-07-10 AVA8431 - Jul 10, 16:50 UTCJul 10, 17:05 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-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?
Yes. Mode-S 0ACAC1 is currently airborne.
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, AVA258, AVA007, AVA118, AVA008.