Apparatus

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sensors Mode-S transponder

0AC98A

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-5335 · AIRBUS A-320

Hex
0AC98A
Octal
02544612
Decimal
706,954
Country
CR
Tail
HK-5335
Type
A320
Broadcasting now · callsign AVA186 · 24,525 ft
Flights observed
9
Distinct callsigns
9
Country
CR
Last broadcast
1d ago

Current position

0AC98A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 0AC98A 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 9 distinct

Callsign Airline Flights Last seen
AVA9786 - 1 2026-04-13
AVA9531 - 1 2026-04-13
AVA9472 - 1 2026-04-12
AVA9418 - 1 2026-04-13
AVA9371 - 1 2026-04-13
AVA9234 - 1 2026-04-13
AVA8512 - 1 2026-04-13
AVA8407 - 1 2026-04-13
AVA127 Avianca - Aerovias Nacionales de Colombia, S.A. 1 2026-04-12

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-13 AVA9234 - Apr 13, 23:20 UTCApr 13, 23:35 UTC15m
2026-04-13 AVA9418 - Apr 13, 22:00 UTCApr 13, 22:15 UTC15m
2026-04-13 AVA9786 - Apr 13, 17:35 UTCApr 13, 17:50 UTC15m
2026-04-13 AVA8512 - Apr 13, 15:15 UTCApr 13, 15:30 UTC15m
2026-04-13 AVA8407 - Apr 13, 13:40 UTCApr 13, 13:55 UTC15m
2026-04-13 AVA9531 - Apr 13, 12:15 UTCApr 13, 12:30 UTC15m
2026-04-13 AVA9371 - Apr 13, 01:50 UTCApr 13, 02:05 UTC15m
2026-04-12 AVA9472 - Apr 12, 23:55 UTCApr 13, 00:10 UTC15m
2026-04-12 AVA127 MIA → BOG Apr 12, 19:15 UTCApr 12, 19:30 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-5335 page for operator, model, and routing details .

Mode-S 0AC98A frequently asked

What is Mode-S code 0AC98A?
0AC98A is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-5335.
Where is Mode-S 0AC98A registered?
Mode-S code 0AC98A 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 0AC98A broadcasting right now?
Yes. Mode-S 0AC98A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0AC98A, octal 02544612, decimal 706,954.
What flights does 0AC98A operate?
Mode-S 0AC98A has broadcast 9 distinct callsigns, including AVA9786, AVA9531, AVA9472, AVA9418, AVA9371.