Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

0ACB2F

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-5431G

Hex
0ACB2F
Octal
02545457
Decimal
707,375
Country
CR
Tail
HK-5431G
Type
SR20
No current signal · last broadcast 6h ago
Flights observed
129
Distinct callsigns
1
Country
CR
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 0ACB2F.

Country allocation

The ICAO 24-bit address 0ACB2F 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
HK5431G - 129 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 HK5431G - Jun 2, 21:35 UTCJun 2, 21:45 UTC10m
2026-06-02 HK5431G - Jun 2, 18:40 UTCJun 2, 19:00 UTC20m
2026-06-02 HK5431G - Jun 2, 17:25 UTCJun 2, 17:40 UTC15m
2026-06-02 HK5431G - Jun 2, 14:20 UTCJun 2, 14:40 UTC20m
2026-06-02 HK5431G - Jun 2, 13:00 UTCJun 2, 13:30 UTC30m
2026-06-01 HK5431G - Jun 1, 14:20 UTCJun 1, 14:50 UTC30m
2026-06-01 HK5431G - Jun 1, 13:00 UTCJun 1, 13:30 UTC30m
2026-05-31 HK5431G - May 31, 21:15 UTCMay 31, 21:30 UTC15m
2026-05-31 HK5431G - May 31, 19:40 UTCMay 31, 19:55 UTC15m
2026-05-31 HK5431G - May 31, 18:30 UTCMay 31, 18:55 UTC25m
2026-05-31 HK5431G - May 31, 17:20 UTCMay 31, 17:50 UTC30m
2026-05-31 HK5431G - May 31, 16:15 UTCMay 31, 16:35 UTC20m
2026-05-31 HK5431G - May 31, 13:55 UTCMay 31, 14:10 UTC15m
2026-05-31 HK5431G - May 31, 12:55 UTCMay 31, 13:10 UTC15m
2026-05-31 HK5431G - May 31, 12:00 UTCMay 31, 12:15 UTC15m
2026-05-30 HK5431G - May 30, 20:00 UTCMay 30, 20:25 UTC25m
2026-05-30 HK5431G - May 30, 18:40 UTCMay 30, 19:05 UTC25m
2026-05-30 HK5431G - May 30, 17:40 UTCMay 30, 18:00 UTC20m
2026-05-30 HK5431G - May 30, 16:40 UTCMay 30, 17:00 UTC20m
2026-05-30 HK5431G - May 30, 15:20 UTCMay 30, 15:45 UTC25m
2026-05-30 HK5431G - May 30, 14:05 UTCMay 30, 14:30 UTC25m
2026-05-30 HK5431G - May 30, 12:30 UTCMay 30, 12:40 UTC10m
2026-05-30 HK5431G - May 30, 11:25 UTCMay 30, 11:45 UTC20m
2026-05-29 HK5431G - May 29, 21:05 UTCMay 29, 21:35 UTC30m
2026-05-29 HK5431G - May 29, 18:20 UTCMay 29, 18:45 UTC25m
2026-05-29 HK5431G - May 29, 16:45 UTCMay 29, 17:10 UTC25m
2026-05-29 HK5431G - May 29, 15:00 UTCMay 29, 15:20 UTC20m
2026-05-29 HK5431G - May 29, 12:55 UTCMay 29, 13:55 UTC1h 0m
2026-05-28 HK5431G - May 28, 21:00 UTCMay 28, 21:40 UTC40m
2026-05-28 HK5431G - May 28, 13:35 UTCMay 28, 14:05 UTC30m
2026-05-27 HK5431G - May 27, 21:00 UTCMay 27, 21:20 UTC20m
2026-05-27 HK5431G - May 27, 20:00 UTCMay 27, 20:25 UTC25m
2026-05-27 HK5431G - May 27, 19:00 UTCMay 27, 19:10 UTC10m
2026-05-27 HK5431G - May 27, 17:15 UTCMay 27, 17:30 UTC15m
2026-05-27 HK5431G - May 27, 15:55 UTCMay 27, 16:20 UTC25m
2026-05-27 HK5431G - May 27, 14:40 UTCMay 27, 15:05 UTC25m
2026-05-27 HK5431G - May 27, 13:25 UTCMay 27, 13:45 UTC20m
2026-05-27 HK5431G - May 27, 12:05 UTCMay 27, 12:20 UTC15m
2026-05-25 HK5431G - May 25, 20:04 UTCMay 25, 20:15 UTC10m
2026-05-25 HK5431G - May 25, 19:00 UTCMay 25, 19:20 UTC20m
2026-05-25 HK5431G - May 25, 17:15 UTCMay 25, 17:30 UTC15m
2026-05-25 HK5431G - May 25, 15:35 UTCMay 25, 16:10 UTC35m
2026-05-25 HK5431G - May 25, 13:50 UTCMay 25, 14:20 UTC30m
2026-05-25 HK5431G - May 25, 12:45 UTCMay 25, 13:10 UTC25m
2026-05-25 HK5431G - May 25, 11:40 UTCMay 25, 12:00 UTC20m
2026-05-24 HK5431G - May 24, 15:35 UTCMay 24, 15:50 UTC15m
2026-05-24 HK5431G - May 24, 11:55 UTCMay 24, 12:15 UTC20m
2026-05-23 HK5431G - May 23, 21:55 UTCMay 23, 22:05 UTC10m
2026-05-23 HK5431G - May 23, 17:00 UTCMay 23, 17:20 UTC20m
2026-05-23 HK5431G - May 23, 15:10 UTCMay 23, 15:40 UTC30m

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-5431G page for operator, model, and routing details .

Mode-S 0ACB2F frequently asked

What is Mode-S code 0ACB2F?
0ACB2F is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-5431G.
Where is Mode-S 0ACB2F registered?
Mode-S code 0ACB2F 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 0ACB2F broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0ACB2F, octal 02545457, decimal 707,375.
What flights does 0ACB2F operate?
Mode-S 0ACB2F has broadcast 1 distinct callsign, including HK5431G.