Apparatus

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sensors Mode-S transponder

0AC12E

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-4780 · BEECH 1900

Hex
0AC12E
Octal
02540456
Decimal
704,814
Country
CR
Tail
HK-4780
Type
B190
No current signal · last broadcast 6h ago
Flights observed
69
Distinct callsigns
20
Country
CR
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 0AC12E.

Country allocation

The ICAO 24-bit address 0AC12E 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
NSE8725 - 11 2026-07-15
NSE8726 - 9 2026-07-15
NSE8683 - 5 2026-05-22
NSE8682 - 5 2026-05-22
NSE8802 - 4 2026-07-17
NSE8762 - 4 2026-07-17
NSE8018 - 4 2026-07-16
NSE7733 - 4 2026-07-16
NSE7732 - 4 2026-07-16
NSE8801 - 3 2026-07-17
NSE8737 - 3 2026-07-17
NSE8911 - 2 2026-07-07
NSE8910 - 2 2026-07-07
NSE8888 - 2 2026-07-13
NSE8883 SATENA 1 2026-04-27
NSE8882 SATENA 1 2026-04-27
NSE8736 - 1 2026-07-09
NSE8633 SATENA 1 2026-04-26
NSE8632 SATENA 1 2026-04-26
NSE6779 - 1 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 NSE8737 - Jul 17, 20:04 UTCJul 17, 20:25 UTC20m
2026-07-17 NSE8762 - Jul 17, 16:10 UTCJul 17, 16:59 UTC50m
2026-07-17 NSE8802 - Jul 17, 14:55 UTCJul 17, 15:15 UTC20m
2026-07-17 NSE8801 - Jul 17, 14:00 UTCJul 17, 14:20 UTC20m
2026-07-16 NSE7733 - Jul 16, 20:09 UTCJul 16, 20:35 UTC25m
2026-07-16 NSE7732 - Jul 16, 18:44 UTCJul 16, 19:20 UTC35m
2026-07-16 NSE8018 - Jul 16, 17:14 UTCJul 16, 17:54 UTC40m
2026-07-15 NSE8726 - Jul 15, 16:15 UTCJul 15, 16:25 UTC10m
2026-07-15 NSE8725 - Jul 15, 14:10 UTCJul 15, 14:30 UTC20m
2026-07-14 NSE8737 - Jul 14, 19:50 UTCJul 14, 20:15 UTC25m
2026-07-14 NSE8762 - Jul 14, 16:00 UTCJul 14, 16:50 UTC50m
2026-07-14 NSE8802 - Jul 14, 15:05 UTCJul 14, 15:25 UTC20m
2026-07-14 NSE8801 - Jul 14, 14:10 UTCJul 14, 14:25 UTC15m
2026-07-13 NSE7733 - Jul 13, 20:50 UTCJul 13, 21:20 UTC30m
2026-07-13 NSE7732 - Jul 13, 19:25 UTCJul 13, 20:00 UTC35m
2026-07-13 NSE8018 - Jul 13, 18:10 UTCJul 13, 18:55 UTC45m
2026-07-13 NSE8888 - Jul 13, 14:10 UTCJul 13, 14:25 UTC15m
2026-07-10 NSE8762 - Jul 10, 16:50 UTCJul 10, 17:40 UTC50m
2026-07-10 NSE8802 - Jul 10, 15:50 UTCJul 10, 16:05 UTC15m
2026-07-10 NSE8801 - Jul 10, 14:50 UTCJul 10, 15:10 UTC20m
2026-07-09 NSE7733 - Jul 9, 20:40 UTCJul 9, 21:15 UTC35m
2026-07-09 NSE7732 - Jul 9, 19:05 UTCJul 9, 19:45 UTC40m
2026-07-09 NSE8018 - Jul 9, 17:30 UTCJul 9, 18:10 UTC40m
2026-07-09 NSE8736 - Jul 9, 14:05 UTCJul 9, 14:25 UTC20m
2026-07-07 NSE8911 - Jul 7, 22:35 UTCJul 7, 22:55 UTC20m
2026-07-07 NSE8910 - Jul 7, 20:05 UTCJul 7, 20:20 UTC15m
2026-06-18 NSE8726 - Jun 18, 20:05 UTCJun 18, 20:20 UTC15m
2026-06-18 NSE8725 BOG → BUN Jun 18, 17:45 UTCJun 18, 18:00 UTC15m
2026-06-17 NSE8726 BUN → BOG Jun 17, 16:25 UTCJun 17, 16:55 UTC30m
2026-06-17 NSE8725 BOG → BUN Jun 17, 14:40 UTCJun 17, 15:00 UTC20m
2026-06-11 NSE8726 BUN → BOG Jun 11, 19:55 UTCJun 11, 20:05 UTC10m
2026-06-10 NSE8726 BUN → BOG Jun 10, 16:45 UTCJun 10, 16:55 UTC10m
2026-06-10 NSE8725 BOG → BUN Jun 10, 14:30 UTCJun 10, 14:45 UTC15m
2026-06-03 NSE8725 BOG → BUN Jun 3, 14:30 UTCJun 3, 14:45 UTC15m
2026-06-02 NSE8737 SJE → BOG Jun 2, 21:00 UTCJun 2, 21:25 UTC25m
2026-06-02 NSE8762 - Jun 2, 17:10 UTCJun 2, 18:00 UTC50m
2026-06-02 NSE8802 LET → LET Jun 2, 14:50 UTCJun 2, 16:00 UTC1h 10m
2026-06-02 NSE7733 LPD → LET Jun 2, 13:35 UTCJun 2, 14:05 UTC30m
2026-06-02 NSE7732 LET → LPD Jun 2, 11:50 UTCJun 2, 12:30 UTC40m
2026-06-01 NSE8018 - Jun 1, 19:40 UTCJun 1, 20:25 UTC45m
2026-06-01 NSE8888 - Jun 1, 13:55 UTCJun 1, 14:15 UTC20m
2026-05-27 NSE8726 BUN → BOG May 27, 16:40 UTCMay 27, 16:55 UTC15m
2026-05-27 NSE8725 BOG → BUN May 27, 14:00 UTCMay 27, 14:20 UTC20m
2026-05-22 NSE8683 - May 22, 15:35 UTCMay 22, 16:00 UTC25m
2026-05-22 NSE8682 - May 22, 11:50 UTCMay 22, 12:00 UTC10m
2026-05-21 NSE8725 BOG → BUN May 21, 18:20 UTCMay 21, 18:40 UTC20m
2026-05-20 NSE8726 BUN → BOG May 20, 16:45 UTCMay 20, 17:05 UTC20m
2026-05-20 NSE8725 BOG → BUN May 20, 14:40 UTCMay 20, 15:00 UTC20m
2026-05-18 NSE8683 - May 18, 16:10 UTCMay 18, 16:35 UTC25m
2026-05-18 NSE8682 - May 18, 12:10 UTCMay 18, 12:20 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-4780 page for operator, model, and routing details .

Mode-S 0AC12E frequently asked

What is Mode-S code 0AC12E?
0AC12E is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-4780.
Where is Mode-S 0AC12E registered?
Mode-S code 0AC12E 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 0AC12E 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 0AC12E, octal 02540456, decimal 704,814.
What flights does 0AC12E operate?
Mode-S 0AC12E has broadcast 20 distinct callsigns, including NSE8725, NSE8726, NSE8683, NSE8682, NSE8802.