Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

0AC02B

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-4525 · EMBRAER ERJ-145

Hex
0AC02B
Octal
02540053
Decimal
704,555
Country
CR
Tail
HK-4525
Type
E145
No current signal · last broadcast 2h ago
Flights observed
159
Distinct callsigns
20
Country
CR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 0AC02B.

Country allocation

The ICAO 24-bit address 0AC02B 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
NSE8705 SATENA 17 2026-05-29
NSE8740 SATENA 14 2026-05-26
NSE8704 SATENA 14 2026-05-28
NSE8741 SATENA 12 2026-05-26
NSE8703 SATENA 12 2026-05-28
NSE8702 SATENA 9 2026-05-27
NSE8722 SATENA 8 2026-05-29
NSE8710 SATENA 8 2026-04-30
NSE8796 SATENA 7 2026-05-28
NSE8748 - 7 2026-05-29
NSE8714 SATENA 7 2026-04-23
NSE8700 SATENA 7 2026-05-30
NSE8775 - 6 2026-05-29
NSE8723 SATENA 6 2026-05-29
NSE8715 SATENA 5 2026-04-17
NSE8898 SATENA 4 2026-05-25
NSE8701 SATENA 4 2026-05-28
NSE8899 SATENA 2 2026-05-26
NSE8711 SATENA 2 2026-04-16
NSE8883 SATENA 1 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 NSE8700 BOG → CZU May 30, 00:10 UTCMay 30, 02:40 UTC2h 30m
2026-05-29 NSE8775 - May 29, 22:10 UTCMay 29, 22:35 UTC25m
2026-05-29 NSE8748 - May 29, 19:40 UTCMay 29, 19:55 UTC15m
2026-05-29 NSE8705 PDA → BOG May 29, 14:15 UTCMay 29, 14:40 UTC25m
2026-05-29 NSE8723 CZU → BOG May 29, 02:00 UTCMay 29, 02:25 UTC25m
2026-05-29 NSE8722 BOG → CZU May 29, 00:05 UTCMay 29, 00:15 UTC10m
2026-05-28 NSE8796 BOG → PCR May 28, 20:05 UTCMay 28, 23:05 UTC3h 0m
2026-05-28 NSE8705 PDA → BOG May 28, 18:15 UTCMay 28, 18:45 UTC30m
2026-05-28 NSE8704 BOG → PDA May 28, 15:35 UTCMay 28, 15:50 UTC15m
2026-05-28 NSE8703 PCR → BOG May 28, 13:50 UTCMay 28, 14:20 UTC30m
2026-05-28 NSE8701 CZU → BOG May 28, 02:10 UTCMay 28, 02:40 UTC30m
2026-05-28 NSE8700 BOG → CZU May 28, 00:10 UTCMay 28, 00:20 UTC10m
2026-05-27 NSE8703 PCR → BOG May 27, 19:40 UTCMay 27, 20:05 UTC25m
2026-05-27 NSE8702 BOG → PCR May 27, 11:25 UTCMay 27, 11:45 UTC20m
2026-05-26 NSE8705 PDA → BOG May 26, 19:25 UTCMay 26, 19:45 UTC20m
2026-05-26 NSE8704 BOG → PDA May 26, 16:55 UTCMay 26, 17:05 UTC10m
2026-05-26 NSE8741 MVP → BOG May 26, 13:54 UTCMay 26, 14:24 UTC30m
2026-05-26 NSE8740 BOG → MVP May 26, 11:39 UTCMay 26, 11:54 UTC15m
2026-05-26 NSE8899 APO → BOG May 26, 01:40 UTCMay 26, 02:00 UTC20m
2026-05-25 NSE8898 BOG → APO May 25, 23:24 UTCMay 25, 23:35 UTC10m
2026-05-25 NSE8705 PDA → BOG May 25, 21:35 UTCMay 25, 22:00 UTC25m
2026-05-25 NSE8704 BOG → PDA May 25, 19:10 UTCMay 25, 19:25 UTC15m
2026-05-25 NSE8702 BOG → PCR May 25, 10:55 UTCMay 25, 17:20 UTC6h 25m
2026-05-25 NSE8723 CZU → BOG May 25, 02:00 UTCMay 25, 02:25 UTC25m
2026-05-24 NSE8704 BOG → PDA May 24, 15:30 UTCMay 24, 15:45 UTC15m
2026-05-24 NSE8797 PCR → BOG May 24, 13:35 UTCMay 24, 14:05 UTC30m
2026-05-24 NSE8796 BOG → PCR May 24, 11:00 UTCMay 24, 11:15 UTC15m
2026-05-23 NSE8741 MVP → BOG May 23, 20:20 UTCMay 23, 23:05 UTC2h 45m
2026-05-23 NSE8705 PDA → BOG May 23, 18:35 UTCMay 23, 19:00 UTC25m
2026-05-23 NSE8704 BOG → PDA May 23, 16:10 UTCMay 23, 16:25 UTC15m
2026-05-23 NSE8703 PCR → BOG May 23, 13:55 UTCMay 23, 14:25 UTC30m
2026-05-23 NSE8702 BOG → PCR May 23, 11:15 UTCMay 23, 11:30 UTC15m
2026-05-23 NSE8701 CZU → BOG May 23, 02:35 UTCMay 23, 03:10 UTC35m
2026-05-23 NSE8700 BOG → CZU May 23, 00:35 UTCMay 23, 00:50 UTC15m
2026-05-22 NSE8619 EOH → BOG May 22, 23:10 UTCMay 22, 23:30 UTC20m
2026-05-22 NSE8616 BOG → EOH May 22, 21:40 UTCMay 22, 21:55 UTC15m
2026-05-22 NSE8740 BOG → MVP May 22, 15:35 UTCMay 22, 15:50 UTC15m
2026-05-22 NSE8705 PDA → BOG May 22, 13:50 UTCMay 22, 14:20 UTC30m
2026-05-22 NSE8704 BOG → PDA May 22, 11:20 UTCMay 22, 11:35 UTC15m
2026-05-22 NSE8723 CZU → BOG May 22, 02:25 UTCMay 22, 02:50 UTC25m
2026-05-22 NSE8722 BOG → CZU May 22, 00:15 UTCMay 22, 00:35 UTC20m
2026-05-21 NSE8796 BOG → PCR May 21, 20:05 UTCMay 21, 23:05 UTC3h 0m
2026-05-21 NSE8704 BOG → PDA May 21, 15:55 UTCMay 21, 18:45 UTC2h 50m
2026-05-21 NSE8703 PCR → BOG May 21, 11:45 UTCMay 21, 14:45 UTC3h 0m
2026-05-21 NSE8701 CZU → BOG May 21, 02:10 UTCMay 21, 02:35 UTC25m
2026-05-21 NSE8700 BOG → CZU May 21, 00:00 UTCMay 21, 00:20 UTC20m
2026-05-20 NSE8775 - May 20, 19:15 UTCMay 20, 22:15 UTC3h 0m
2026-05-20 NSE8705 PDA → BOG May 20, 17:50 UTCMay 20, 18:10 UTC20m
2026-05-20 NSE8704 BOG → PDA May 20, 15:20 UTCMay 20, 15:30 UTC10m
2026-05-20 NSE8702 BOG → PCR May 20, 11:25 UTCMay 20, 14:20 UTC2h 55m

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-4525 page for operator, model, and routing details .

Mode-S 0AC02B frequently asked

What is Mode-S code 0AC02B?
0AC02B is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-4525.
Where is Mode-S 0AC02B registered?
Mode-S code 0AC02B 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 0AC02B 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 0AC02B, octal 02540053, decimal 704,555.
What flights does 0AC02B operate?
Mode-S 0AC02B has broadcast 20 distinct callsigns, including NSE8705, NSE8740, NSE8704, NSE8741, NSE8703.