Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

0ACAAA

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-5409 · AIRBUS A-320neo

Hex
0ACAAA
Octal
02545252
Decimal
707,242
Country
CR
Tail
HK-5409
Type
A20N
No current signal · last broadcast 2h ago
Flights observed
280
Distinct callsigns
20
Country
CR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 0ACAAA.

Country allocation

The ICAO 24-bit address 0ACAAA 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
AVA263 Avianca - Aerovias Nacionales de Colombia, S.A. 9 2026-06-03
AVA262 Avianca - Aerovias Nacionales de Colombia, S.A. 8 2026-06-02
AVA211 - 8 2026-06-15
AVA188 - 8 2026-06-24
AVA155 - 8 2026-06-30
AVA154 - 8 2026-07-01
AVA189 - 7 2026-06-24
AVA261 - 6 2026-07-12
AVA260 - 6 2026-07-12
AVA245 - 6 2026-06-29
AVA214 Avianca - Aerovias Nacionales de Colombia, S.A. 5 2026-06-20
AVA210 - 5 2026-06-14
AVA200 - 5 2026-06-25
AVA197 - 5 2026-07-13
AVA112 - 5 2026-06-28
AVA087 - 5 2026-07-08
AVA257 - 4 2026-06-28
AVA205 - 4 2026-07-13
AVA204 - 4 2026-07-12
AVA201 - 4 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AVA198 - Jul 14, 04:55 UTCJul 14, 05:45 UTC50m
2026-07-13 AVA197 - Jul 13, 22:35 UTCJul 14, 03:20 UTC4h 45m
2026-07-13 AVA050 - Jul 13, 17:20 UTCJul 13, 19:35 UTC2h 15m
2026-07-13 AVA049 - Jul 13, 12:45 UTCJul 13, 15:00 UTC2h 15m
2026-07-13 AVA205 - Jul 13, 05:15 UTCJul 13, 07:55 UTC2h 40m
2026-07-12 AVA204 BOG → YYZ Jul 12, 21:45 UTCJul 13, 03:15 UTC5h 30m
2026-07-12 AVA260 - Jul 12, 10:40 UTCJul 12, 16:50 UTC6h 10m
2026-07-12 AVA261 - Jul 12, 03:35 UTCJul 12, 08:55 UTC5h 20m
2026-07-11 AVA052 - Jul 11, 23:05 UTCJul 12, 01:20 UTC2h 15m
2026-07-11 AVA053 - Jul 11, 18:55 UTCJul 11, 21:05 UTC2h 10m
2026-07-11 AVA021 - Jul 11, 12:00 UTCJul 11, 16:50 UTC4h 50m
2026-07-11 AVA020 - Jul 11, 07:40 UTCJul 11, 09:35 UTC1h 55m
2026-07-10 AVA265 - Jul 10, 23:30 UTCJul 11, 02:00 UTC2h 30m
2026-07-10 AVA264 - Jul 10, 19:15 UTCJul 10, 22:05 UTC2h 51m
2026-07-10 AVA021 JFK → BOG Jul 10, 12:05 UTCJul 10, 17:05 UTC5h 0m
2026-07-10 AVA020 BOG → JFK Jul 10, 04:30 UTCJul 10, 09:35 UTC5h 5m
2026-07-10 AVA9843 - Jul 10, 02:25 UTCJul 10, 02:40 UTC15m
2026-07-10 AVA8539 - Jul 10, 00:35 UTCJul 10, 00:50 UTC15m
2026-07-09 AVA9515 - Jul 9, 19:05 UTCJul 9, 22:40 UTC3h 35m
2026-07-08 AVA265 - Jul 8, 23:30 UTCJul 9, 01:00 UTC1h 30m
2026-07-08 AVA264 - Jul 8, 20:20 UTCJul 8, 21:55 UTC1h 35m
2026-07-08 AVA088 - Jul 8, 10:20 UTCJul 8, 15:20 UTC5h 0m
2026-07-08 AVA087 - Jul 8, 03:55 UTCJul 8, 08:40 UTC4h 45m
2026-07-07 AVA233 - Jul 7, 22:25 UTCJul 7, 22:50 UTC25m
2026-07-07 AVA233 - Jul 7, 21:25 UTCJul 7, 21:35 UTC10m
2026-07-07 AVA232 BOG → AUA Jul 7, 18:25 UTCJul 7, 18:45 UTC20m
2026-07-07 AVA005 - Jul 7, 15:30 UTCJul 7, 15:50 UTC20m
2026-07-07 AVA005 - Jul 7, 12:45 UTCJul 7, 13:10 UTC25m
2026-07-07 AVA032 - Jul 7, 00:30 UTCJul 7, 08:05 UTC7h 35m
2026-07-06 AVA004 BOG → MIA Jul 6, 18:40 UTCJul 6, 21:55 UTC3h 15m
2026-07-06 AVA088 - Jul 6, 10:25 UTCJul 6, 16:55 UTC6h 30m
2026-07-06 AVA087 BOG → EZE Jul 6, 03:10 UTCJul 6, 08:45 UTC5h 35m
2026-07-05 AVA104 - Jul 5, 14:30 UTCJul 6, 01:45 UTC11h 15m
2026-07-04 AVA227 - Jul 4, 13:15 UTCJul 4, 15:55 UTC2h 40m
2026-07-04 AVA222 NAS → BOS Jul 4, 07:30 UTCJul 4, 10:05 UTC2h 35m
2026-07-02 AVA5031 - Jul 2, 19:05 UTCJul 2, 19:30 UTC25m
2026-07-01 AVA004 - Jul 1, 21:40 UTCJul 1, 22:20 UTC40m
2026-07-01 AVA154 - Jul 1, 10:20 UTCJul 1, 15:25 UTC5h 5m
2026-06-30 AVA155 GUA → AEP Jun 30, 22:10 UTCJul 1, 08:10 UTC10h 0m
2026-06-30 AVA205 YYZ → GUA Jun 30, 06:00 UTCJun 30, 20:50 UTC14h 50m
2026-06-30 AVA204 - Jun 30, 00:55 UTCJun 30, 03:50 UTC2h 56m
2026-06-29 AVA245 - Jun 29, 06:05 UTCJun 29, 08:24 UTC2h 20m
2026-06-29 AVA244 - Jun 29, 01:14 UTCJun 29, 03:39 UTC2h 25m
2026-06-28 AVA257 - Jun 28, 18:10 UTCJun 28, 19:34 UTC1h 25m
2026-06-28 AVA112 EZE → CUN Jun 28, 06:05 UTCJun 28, 16:45 UTC10h 40m
2026-06-27 AVA111 - Jun 27, 18:15 UTCJun 28, 04:20 UTC10h 5m
2026-06-27 AVA256 - Jun 27, 15:00 UTCJun 27, 16:39 UTC1h 40m
2026-06-26 AVA201 - Jun 26, 03:29 UTCJun 26, 06:25 UTC2h 55m
2026-06-25 AVA200 - Jun 25, 22:20 UTCJun 26, 01:20 UTC3h 0m
2026-06-25 AVA086 - Jun 25, 10:45 UTCJun 25, 15:44 UTC5h 0m

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-5409 page for operator, model, and routing details .

Mode-S 0ACAAA frequently asked

What is Mode-S code 0ACAAA?
0ACAAA is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-5409.
Where is Mode-S 0ACAAA registered?
Mode-S code 0ACAAA 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 0ACAAA broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0ACAAA, octal 02545252, decimal 707,242.
What flights does 0ACAAA operate?
Mode-S 0ACAAA has broadcast 20 distinct callsigns, including AVA263, AVA262, AVA211, AVA188, AVA155.