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 Jul 26, 22:35 UTC
Flights observed
356
Distinct callsigns
20
Country
CR
Last broadcast
Jul 26, 22:35 UTC

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 47 2026-07-26
NSE8704 SATENA 43 2026-07-26
NSE8702 SATENA 27 2026-07-26
NSE8703 SATENA 26 2026-07-26
NSE8740 SATENA 25 2026-07-25
NSE8748 - 19 2026-07-24
NSE8741 SATENA 19 2026-07-25
NSE8722 SATENA 19 2026-07-24
NSE8700 SATENA 17 2026-07-25
NSE8775 - 16 2026-07-24
NSE8796 SATENA 15 2026-07-26
NSE8723 SATENA 13 2026-07-24
NSE8898 SATENA 12 2026-07-25
NSE8701 SATENA 12 2026-07-25
NSE8797 - 8 2026-07-16
NSE8710 SATENA 8 2026-04-30
NSE8714 SATENA 7 2026-04-23
NSE8899 - 6 2026-07-21
NSE8715 SATENA 5 2026-04-17
NSE8799 SATENA 2 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NSE8703 PCR → BOG Jul 26, 22:05 UTCJul 26, 22:30 UTC25m
2026-07-26 NSE8702 BOG → PCR Jul 26, 19:30 UTCJul 26, 19:45 UTC15m
2026-07-26 NSE8705 PDA → BOG Jul 26, 17:50 UTCJul 26, 18:10 UTC20m
2026-07-26 NSE8704 BOG → PDA Jul 26, 15:20 UTCJul 26, 15:30 UTC10m
2026-07-26 NSE8796 BOG → PCR Jul 26, 10:50 UTCJul 26, 13:55 UTC3h 5m
2026-07-26 NSE8799 APO → BOG Jul 26, 00:25 UTCJul 26, 01:00 UTC35m
2026-07-25 NSE8898 BOG → APO Jul 25, 22:40 UTCJul 25, 23:15 UTC35m
2026-07-25 NSE8741 MVP → BOG Jul 25, 21:20 UTCJul 25, 21:45 UTC25m
2026-07-25 NSE8740 BOG → MVP Jul 25, 19:05 UTCJul 25, 19:20 UTC15m
2026-07-25 NSE8705 PDA → BOG Jul 25, 17:35 UTCJul 25, 17:55 UTC20m
2026-07-25 NSE8704 BOG → PDA Jul 25, 15:10 UTCJul 25, 15:20 UTC10m
2026-07-25 NSE8703 PCR → BOG Jul 25, 13:35 UTCJul 25, 14:00 UTC25m
2026-07-25 NSE8701 CZU → BOG Jul 25, 01:55 UTCJul 25, 02:45 UTC50m
2026-07-25 NSE8700 BOG → CZU Jul 25, 00:20 UTCJul 25, 01:05 UTC45m
2026-07-24 NSE8775 - Jul 24, 22:05 UTCJul 24, 22:30 UTC25m
2026-07-24 NSE8748 - Jul 24, 19:40 UTCJul 24, 19:50 UTC10m
2026-07-24 NSE8740 BOG → MVP Jul 24, 15:10 UTCJul 24, 18:10 UTC3h 0m
2026-07-24 NSE8705 PDA → BOG Jul 24, 13:45 UTCJul 24, 14:05 UTC20m
2026-07-24 NSE8704 BOG → PDA Jul 24, 11:15 UTCJul 24, 11:30 UTC15m
2026-07-24 NSE8723 CZU → BOG Jul 24, 01:40 UTCJul 24, 02:15 UTC35m
2026-07-24 NSE8722 BOG → CZU Jul 24, 00:00 UTCJul 24, 00:50 UTC50m
2026-07-23 NSE8796 BOG → PCR Jul 23, 19:40 UTCJul 23, 22:40 UTC3h 0m
2026-07-23 NSE8705 PDA → BOG Jul 23, 18:15 UTCJul 23, 18:50 UTC35m
2026-07-23 NSE8704 BOG → PDA Jul 23, 15:45 UTCJul 23, 16:00 UTC15m
2026-07-23 NSE8701 CZU → BOG Jul 23, 01:40 UTCJul 23, 02:35 UTC55m
2026-07-23 NSE8700 BOG → CZU Jul 23, 00:05 UTCJul 23, 00:55 UTC50m
2026-07-22 NSE8775 - Jul 22, 22:05 UTCJul 22, 22:35 UTC30m
2026-07-22 NSE8748 - Jul 22, 19:35 UTCJul 22, 19:50 UTC15m
2026-07-22 NSE8705 PDA → BOG Jul 22, 18:10 UTCJul 22, 18:40 UTC30m
2026-07-22 NSE8704 BOG → PDA Jul 22, 15:40 UTCJul 22, 15:55 UTC15m
2026-07-22 NSE8702 BOG → BOG Jul 22, 11:35 UTCJul 22, 14:30 UTC2h 55m
2026-07-22 NSE8723 CZU → BOG Jul 22, 01:50 UTCJul 22, 02:45 UTC55m
2026-07-22 NSE8722 BOG → CZU Jul 22, 00:05 UTCJul 22, 00:55 UTC50m
2026-07-21 NSE8702 BOG → BOG Jul 21, 19:10 UTCJul 21, 22:10 UTC3h 0m
2026-07-21 NSE8705 PDA → BOG Jul 21, 17:40 UTCJul 21, 18:05 UTC25m
2026-07-21 NSE8704 BOG → PDA Jul 21, 15:10 UTCJul 21, 15:20 UTC10m
2026-07-21 NSE8796 BOG → PCR Jul 21, 11:15 UTCJul 21, 14:15 UTC3h 0m
2026-07-21 NSE8899 - Jul 21, 01:35 UTCJul 21, 02:10 UTC35m
2026-07-21 NSE8898 BOG → APO Jul 21, 00:00 UTCJul 21, 00:35 UTC35m
2026-07-20 NSE8705 - Jul 20, 22:30 UTCJul 20, 23:00 UTC30m
2026-07-20 NSE8704 BOG → PDA Jul 20, 20:00 UTCJul 20, 20:15 UTC15m
2026-07-20 NSE8703 BOG → BOG Jul 20, 13:40 UTCJul 20, 18:50 UTC5h 10m
2026-07-20 NSE8702 BOG → BOG Jul 20, 10:55 UTCJul 20, 12:05 UTC1h 10m
2026-07-19 NSE8775 - Jul 19, 22:05 UTCJul 19, 22:35 UTC30m
2026-07-19 NSE8748 - Jul 19, 19:35 UTCJul 19, 19:50 UTC15m
2026-07-19 NSE8705 - Jul 19, 18:05 UTCJul 19, 18:30 UTC25m
2026-07-19 NSE8704 BOG → PDA Jul 19, 15:35 UTCJul 19, 15:50 UTC15m
2026-07-19 NSE8796 BOG → PCR Jul 19, 11:00 UTCJul 19, 13:25 UTC2h 25m
2026-07-18 NSE8898 BOG → BOG Jul 18, 23:30 UTCJul 19, 01:40 UTC2h 10m
2026-07-18 NSE8740 BOG → BOG Jul 18, 19:50 UTCJul 18, 22:30 UTC2h 40m

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 Jul 26, 22:35 UTC.
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, NSE8704, NSE8702, NSE8703, NSE8740.