Apparatus

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sensors Mode-S transponder

0AC97F

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-4814G

Hex
0AC97F
Octal
02544577
Decimal
706,943
Country
CR
Tail
HK-4814G
Type
P28A
No current signal · last broadcast 6d ago
Flights observed
40
Distinct callsigns
1
Country
CR
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S 0AC97F.

Country allocation

The ICAO 24-bit address 0AC97F 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
HK4814G - 40 2026-07-25

Recent flights last 40

DateFlightRouteTakeoffLandingDuration
2026-07-25 HK4814G - Jul 25, 19:50 UTCJul 25, 20:00 UTC10m
2026-07-25 HK4814G - Jul 25, 15:30 UTCJul 25, 15:45 UTC15m
2026-07-25 HK4814G - Jul 25, 01:15 UTCJul 25, 02:20 UTC1h 5m
2026-07-24 HK4814G - Jul 24, 23:50 UTCJul 25, 00:00 UTC10m
2026-07-24 HK4814G - Jul 24, 21:55 UTCJul 24, 22:10 UTC15m
2026-07-24 HK4814G - Jul 24, 20:15 UTCJul 24, 20:50 UTC35m
2026-07-24 HK4814G - Jul 24, 14:30 UTCJul 24, 15:15 UTC45m
2026-07-23 HK4814G - Jul 23, 19:00 UTCJul 23, 20:35 UTC1h 35m
2026-07-23 HK4814G - Jul 23, 16:30 UTCJul 23, 17:40 UTC1h 10m
2026-07-23 HK4814G CRC → CRC Jul 23, 14:55 UTCJul 23, 15:40 UTC45m
2026-07-22 HK4814G - Jul 22, 22:20 UTCJul 22, 22:35 UTC15m
2026-07-22 HK4814G - Jul 22, 19:30 UTCJul 22, 21:20 UTC1h 50m
2026-07-22 HK4814G - Jul 22, 17:25 UTCJul 22, 17:35 UTC10m
2026-07-21 HK4814G - Jul 21, 19:10 UTCJul 21, 19:55 UTC45m
2026-07-21 HK4814G - Jul 21, 17:10 UTCJul 21, 18:00 UTC50m
2026-07-18 HK4814G - Jul 18, 21:00 UTCJul 18, 21:50 UTC50m
2026-07-18 HK4814G - Jul 18, 13:25 UTCJul 18, 14:00 UTC35m
2026-07-18 HK4814G - Jul 18, 12:05 UTCJul 18, 12:35 UTC30m
2026-07-17 HK4814G - Jul 17, 20:55 UTCJul 17, 21:34 UTC40m
2026-07-17 HK4814G - Jul 17, 14:04 UTCJul 17, 14:15 UTC10m
2026-07-17 HK4814G - Jul 17, 12:00 UTCJul 17, 12:35 UTC35m
2026-07-15 HK4814G - Jul 15, 16:30 UTCJul 15, 18:10 UTC1h 40m
2026-07-15 HK4814G - Jul 15, 15:10 UTCJul 15, 15:25 UTC15m
2026-07-15 HK4814G - Jul 15, 14:15 UTCJul 15, 14:35 UTC20m
2026-07-14 HK4814G - Jul 14, 18:45 UTCJul 14, 19:40 UTC55m
2026-07-14 HK4814G - Jul 14, 12:15 UTCJul 14, 13:15 UTC1h 0m
2026-06-19 HK4814G - Jun 19, 17:04 UTCJun 19, 17:19 UTC15m
2026-06-19 HK4814G - Jun 19, 14:59 UTCJun 19, 15:09 UTC10m
2026-06-19 HK4814G - Jun 19, 13:54 UTCJun 19, 14:04 UTC10m
2026-06-18 HK4814G - Jun 18, 16:50 UTCJun 18, 17:00 UTC10m
2026-06-18 HK4814G - Jun 18, 16:00 UTCJun 18, 16:20 UTC20m
2026-06-18 HK4814G - Jun 18, 13:35 UTCJun 18, 13:50 UTC15m
2026-06-18 HK4814G - Jun 18, 12:40 UTCJun 18, 12:50 UTC10m
2026-06-17 HK4814G EOH → EOH Jun 17, 16:05 UTCJun 17, 16:20 UTC15m
2026-06-17 HK4814G - Jun 17, 15:05 UTCJun 17, 15:15 UTC10m
2026-06-17 HK4814G - Jun 17, 12:50 UTCJun 17, 13:05 UTC15m
2026-06-16 HK4814G - Jun 16, 17:49 UTCJun 16, 17:59 UTC10m
2026-06-16 HK4814G - Jun 16, 15:24 UTCJun 16, 15:35 UTC10m
2026-06-16 HK4814G - Jun 16, 13:40 UTCJun 16, 13:55 UTC15m
2026-06-16 HK4814G - Jun 16, 12:35 UTCJun 16, 12:45 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-4814G page for operator, model, and routing details .

Mode-S 0AC97F frequently asked

What is Mode-S code 0AC97F?
0AC97F is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-4814G.
Where is Mode-S 0AC97F registered?
Mode-S code 0AC97F 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 0AC97F 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 0AC97F, octal 02544577, decimal 706,943.
What flights does 0AC97F operate?
Mode-S 0AC97F has broadcast 1 distinct callsign, including HK4814G.