Apparatus

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sensors Mode-S transponder

0AC3FC

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-5297G · PIPER PA-28-140/150/160/180

Hex
0AC3FC
Octal
02541774
Decimal
705,532
Country
CR
Tail
HK-5297G
Type
P28A
No current signal · last broadcast 6d ago
Flights observed
38
Distinct callsigns
1
Country
CR
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S 0AC3FC.

Country allocation

The ICAO 24-bit address 0AC3FC 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 1 distinct

Callsign Airline Flights Last seen
HK5297G - 38 2026-07-25

Recent flights last 38

DateFlightRouteTakeoffLandingDuration
2026-07-25 HK5297G - Jul 25, 18:25 UTCJul 25, 20:00 UTC1h 35m
2026-07-25 HK5297G CRC → CRC Jul 25, 15:10 UTCJul 25, 15:20 UTC10m
2026-07-25 HK5297G - Jul 25, 13:00 UTCJul 25, 13:20 UTC20m
2026-07-24 HK5297G - Jul 24, 20:35 UTCJul 24, 22:00 UTC1h 25m
2026-07-24 HK5297G - Jul 24, 18:20 UTCJul 24, 18:45 UTC25m
2026-07-24 HK5297G - Jul 24, 16:35 UTCJul 24, 17:15 UTC40m
2026-07-24 HK5297G - Jul 24, 14:50 UTCJul 24, 15:40 UTC50m
2026-07-23 HK5297G - Jul 23, 20:45 UTCJul 23, 21:30 UTC45m
2026-07-23 HK5297G - Jul 23, 19:10 UTCJul 23, 19:50 UTC40m
2026-07-23 HK5297G - Jul 23, 14:25 UTCJul 23, 15:45 UTC1h 20m
2026-07-23 HK5297G - Jul 23, 12:15 UTCJul 23, 13:30 UTC1h 15m
2026-07-22 HK5297G - Jul 22, 12:00 UTCJul 22, 14:15 UTC2h 15m
2026-07-21 HK5297G - Jul 21, 21:25 UTCJul 21, 21:40 UTC15m
2026-07-21 HK5297G - Jul 21, 19:00 UTCJul 21, 20:05 UTC1h 5m
2026-07-21 HK5297G - Jul 21, 17:10 UTCJul 21, 17:40 UTC30m
2026-07-21 HK5297G - Jul 21, 12:20 UTCJul 21, 12:30 UTC10m
2026-07-18 HK5297G - Jul 18, 19:05 UTCJul 18, 21:10 UTC2h 5m
2026-07-18 HK5297G - Jul 18, 15:25 UTCJul 18, 15:50 UTC25m
2026-07-18 HK5297G - Jul 18, 14:10 UTCJul 18, 14:55 UTC45m
2026-07-17 HK5297G - Jul 17, 18:25 UTCJul 17, 19:30 UTC1h 5m
2026-07-17 HK5297G - Jul 17, 16:04 UTCJul 17, 16:15 UTC10m
2026-07-16 HK5297G - Jul 16, 17:20 UTCJul 16, 18:40 UTC1h 20m
2026-07-16 HK5297G - Jul 16, 02:00 UTCJul 16, 02:45 UTC45m
2026-07-15 HK5297G - Jul 15, 23:45 UTCJul 16, 00:55 UTC1h 10m
2026-07-15 HK5297G - Jul 15, 01:35 UTCJul 15, 02:25 UTC50m
2026-07-14 HK5297G - Jul 14, 23:30 UTCJul 15, 00:40 UTC1h 10m
2026-07-14 HK5297G - Jul 14, 22:10 UTCJul 14, 22:20 UTC10m
2026-07-14 HK5297G - Jul 14, 12:05 UTCJul 14, 12:55 UTC50m
2026-06-19 HK5297G - Jun 19, 19:39 UTCJun 19, 19:49 UTC10m
2026-06-19 HK5297G - Jun 19, 13:44 UTCJun 19, 13:59 UTC15m
2026-06-18 HK5297G - Jun 18, 16:45 UTCJun 18, 16:55 UTC10m
2026-06-18 HK5297G - Jun 18, 12:30 UTCJun 18, 12:35 UTC5m
2026-06-17 HK5297G EOH → EOH Jun 17, 16:15 UTCJun 17, 16:25 UTC10m
2026-06-17 HK5297G - Jun 17, 12:30 UTCJun 17, 13:00 UTC30m
2026-06-16 HK5297G - Jun 16, 17:49 UTCJun 16, 17:59 UTC10m
2026-06-16 HK5297G - Jun 16, 15:55 UTCJun 16, 16:15 UTC20m
2026-06-16 HK5297G - Jun 16, 14:20 UTCJun 16, 14:30 UTC10m
2026-06-16 HK5297G - Jun 16, 12:25 UTCJun 16, 12:35 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-5297G page for operator, model, and routing details .

Mode-S 0AC3FC frequently asked

What is Mode-S code 0AC3FC?
0AC3FC is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-5297G.
Where is Mode-S 0AC3FC registered?
Mode-S code 0AC3FC 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 0AC3FC broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0AC3FC, octal 02541774, decimal 705,532.
What flights does 0AC3FC operate?
Mode-S 0AC3FC has broadcast 1 distinct callsign, including HK5297G.