Apparatus

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sensors Mode-S transponder

0ACBB0

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-5452

Hex
0ACBB0
Octal
02545660
Decimal
707,504
Country
CR
Tail
HK-5452
Type
DHC6
No current signal · last broadcast 7d ago
Flights observed
46
Distinct callsigns
16
Country
CR
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S 0ACBB0.

Country allocation

The ICAO 24-bit address 0ACBB0 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 16 distinct

Callsign Airline Flights Last seen
NSE8875 SATENA 6 2026-07-24
NSE8678 SATENA 6 2026-07-24
NSE8913 SATENA 5 2026-07-24
NSE8912 SATENA 5 2026-07-24
NSE8857 SATENA 4 2026-07-23
NSE8856 - 4 2026-07-21
NSE8876 SATENA 3 2026-07-25
NSE8855 - 2 2026-07-09
NSE8854 - 2 2026-07-09
NSE8840 - 2 2026-07-20
NSE8673 - 2 2026-07-16
NSE8851 - 1 2026-06-18
NSE8850 - 1 2026-06-18
NSE8839 - 1 2026-06-17
NSE8677 SATENA 1 2026-07-20
NSE6543 - 1 2026-07-13

Recent flights last 46

DateFlightRouteTakeoffLandingDuration
2026-07-25 NSE8876 EOH → UIB Jul 25, 15:00 UTCJul 25, 15:10 UTC10m
2026-07-24 NSE8875 UIB → EOH Jul 24, 21:25 UTCJul 24, 21:30 UTC5m
2026-07-24 NSE8678 EOH → UIB Jul 24, 17:55 UTCJul 24, 18:05 UTC10m
2026-07-24 NSE8678 EOH → UIB Jul 24, 17:10 UTCJul 24, 17:20 UTC10m
2026-07-24 NSE8913 MTB → EOH Jul 24, 13:40 UTCJul 24, 13:55 UTC15m
2026-07-24 NSE8912 EOH → MTB Jul 24, 11:40 UTCJul 24, 11:50 UTC10m
2026-07-23 NSE8857 COG → EOH Jul 23, 16:05 UTCJul 23, 16:10 UTC5m
2026-07-21 NSE8856 - Jul 21, 19:15 UTCJul 21, 19:20 UTC5m
2026-07-21 NSE8678 EOH → UIB Jul 21, 15:15 UTCJul 21, 15:25 UTC10m
2026-07-21 NSE8913 MTB → EOH Jul 21, 14:15 UTCJul 21, 14:30 UTC15m
2026-07-21 NSE8912 EOH → MTB Jul 21, 12:25 UTCJul 21, 12:35 UTC10m
2026-07-20 NSE8677 UIB → EOH Jul 20, 22:00 UTCJul 20, 22:05 UTC5m
2026-07-20 NSE8678 EOH → UIB Jul 20, 16:45 UTCJul 20, 16:55 UTC10m
2026-07-20 NSE8840 - Jul 20, 15:50 UTCJul 20, 15:55 UTC5m
2026-07-19 NSE8875 - Jul 19, 19:10 UTCJul 19, 19:20 UTC10m
2026-07-19 NSE8876 - Jul 19, 15:50 UTCJul 19, 16:00 UTC10m
2026-07-18 NSE8875 EOH → EOH Jul 18, 21:55 UTCJul 18, 22:00 UTC5m
2026-07-18 NSE8876 - Jul 18, 14:50 UTCJul 18, 15:00 UTC10m
2026-07-18 NSE8875 EOH → EOH Jul 18, 01:54 UTCJul 18, 02:00 UTC5m
2026-07-17 NSE8875 - Jul 17, 21:34 UTCJul 17, 21:39 UTC5m
2026-07-17 NSE8678 - Jul 17, 17:25 UTCJul 17, 17:35 UTC10m
2026-07-17 NSE8913 - Jul 17, 13:45 UTCJul 17, 13:55 UTC10m
2026-07-17 NSE8912 - Jul 17, 11:55 UTCJul 17, 12:04 UTC10m
2026-07-16 NSE8673 EOH → EOH Jul 16, 21:19 UTCJul 16, 21:25 UTC5m
2026-07-16 NSE8857 - Jul 16, 14:50 UTCJul 16, 14:55 UTC5m
2026-07-13 NSE6543 - Jul 13, 22:10 UTCJul 13, 22:20 UTC10m
2026-07-13 NSE8856 - Jul 13, 20:50 UTCJul 13, 21:00 UTC10m
2026-07-13 NSE8857 - Jul 13, 19:35 UTCJul 13, 19:40 UTC5m
2026-07-11 NSE8913 - Jul 11, 19:35 UTCJul 11, 19:40 UTC5m
2026-07-11 NSE8912 - Jul 11, 17:45 UTCJul 11, 17:55 UTC10m
2026-07-11 NSE8857 EOH → EOH Jul 11, 17:05 UTCJul 11, 17:10 UTC5m
2026-07-09 NSE8856 - Jul 9, 21:50 UTCJul 9, 22:00 UTC10m
2026-07-09 NSE8855 EOH → EOH Jul 9, 21:05 UTCJul 9, 21:10 UTC5m
2026-07-09 NSE8854 - Jul 9, 18:30 UTCJul 9, 18:40 UTC10m
2026-06-20 NSE8856 - Jun 20, 20:34 UTCJun 20, 20:40 UTC5m
2026-06-18 NSE8855 - Jun 18, 17:45 UTCJun 18, 17:55 UTC10m
2026-06-18 NSE8854 - Jun 18, 14:55 UTCJun 18, 15:05 UTC10m
2026-06-18 NSE8851 - Jun 18, 13:50 UTCJun 18, 14:01 UTC10m
2026-06-18 NSE8850 - Jun 18, 12:00 UTCJun 18, 12:10 UTC10m
2026-06-17 NSE8875 - Jun 17, 20:00 UTCJun 17, 20:05 UTC5m
2026-06-17 NSE8678 - Jun 17, 16:25 UTCJun 17, 16:35 UTC10m
2026-06-17 NSE8840 - Jun 17, 15:30 UTCJun 17, 15:35 UTC5m
2026-06-17 NSE8839 - Jun 17, 12:40 UTCJun 17, 12:45 UTC5m
2026-06-16 NSE8673 - Jun 16, 18:50 UTCJun 16, 19:00 UTC10m
2026-06-16 NSE8913 - Jun 16, 13:34 UTCJun 16, 13:50 UTC15m
2026-06-16 NSE8912 - Jun 16, 11:40 UTCJun 16, 11:49 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-5452 page for operator, model, and routing details .

Mode-S 0ACBB0 frequently asked

What is Mode-S code 0ACBB0?
0ACBB0 is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-5452.
Where is Mode-S 0ACBB0 registered?
Mode-S code 0ACBB0 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 0ACBB0 broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0ACBB0, octal 02545660, decimal 707,504.
What flights does 0ACBB0 operate?
Mode-S 0ACBB0 has broadcast 16 distinct callsigns, including NSE8875, NSE8678, NSE8913, NSE8912, NSE8857.