Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

0AC138

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to FAC1184 · ATR-42-500

Hex
0AC138
Octal
02540470
Decimal
704,824
Country
CR
Tail
FAC1184
Type
AT45
No current signal · last broadcast 21h ago
Flights observed
81
Distinct callsigns
20
Country
CR
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S 0AC138.

Country allocation

The ICAO 24-bit address 0AC138 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
NSE8742 - 10 2026-06-01
NSE8743 SATENA 8 2026-05-30
NSE8766 SATENA 4 2026-05-15
NSE8736 SATENA 4 2026-06-01
NSE8616 SATENA 4 2026-05-30
NSE6534 - 4 2026-05-31
NSE8737 SATENA 3 2026-05-30
NSE6535 - 3 2026-05-31
NSE8777 SATENA 2 2026-06-01
NSE8625 SATENA 2 2026-05-18
NSE8624 SATENA 2 2026-05-18
NSE8619 SATENA 2 2026-04-26
NSE8606 SATENA 2 2026-04-26
NSE8602 SATENA 2 2026-05-15
NSE8601 SATENA 2 2026-05-21
NSE6751 - 2 2026-04-26
NSE6750 - 2 2026-04-26
NSE8898 SATENA 1 2026-04-23
NSE8887 SATENA 1 2026-04-15
NSE8799 SATENA 1 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 NSE8742 - Jun 1, 21:00 UTCJun 1, 21:20 UTC20m
2026-06-01 NSE8736 BOG → SJE Jun 1, 17:10 UTCJun 1, 17:25 UTC15m
2026-06-01 NSE8777 LQM → BOG Jun 1, 15:40 UTCJun 1, 16:05 UTC25m
2026-06-01 NSE8776 BOG → LQM Jun 1, 12:45 UTCJun 1, 13:00 UTC15m
2026-05-31 NSE6535 - May 31, 18:25 UTCMay 31, 18:45 UTC20m
2026-05-31 NSE6534 - May 31, 17:00 UTCMay 31, 17:15 UTC15m
2026-05-30 NSE8616 BOG → EOH May 30, 21:45 UTCMay 30, 22:00 UTC15m
2026-05-30 NSE8743 VGZ → BOG May 30, 20:00 UTCMay 30, 20:25 UTC25m
2026-05-30 NSE8742 - May 30, 17:30 UTCMay 30, 17:45 UTC15m
2026-05-30 NSE8737 SJE → BOG May 30, 16:05 UTCMay 30, 16:25 UTC20m
2026-05-30 NSE8736 BOG → SJE May 30, 14:20 UTCMay 30, 14:35 UTC15m
2026-05-21 NSE8601 EOH → BOG May 21, 11:10 UTCMay 21, 11:25 UTC15m
2026-05-20 NSE8616 BOG → EOH May 20, 22:00 UTCMay 20, 22:20 UTC20m
2026-05-20 NSE8741 MVP → BOG May 20, 20:45 UTCMay 20, 21:05 UTC20m
2026-05-20 NSE8740 BOG → MVP May 20, 17:35 UTCMay 20, 17:55 UTC20m
2026-05-20 NSE8711 AUC → BOG May 20, 15:20 UTCMay 20, 15:45 UTC25m
2026-05-20 NSE8710 BOG → AUC May 20, 12:40 UTCMay 20, 12:55 UTC15m
2026-05-20 NSE8794 UIB → BOG May 20, 00:45 UTCMay 20, 01:10 UTC25m
2026-05-19 NSE8793 BOG → UIB May 19, 22:45 UTCMay 19, 23:00 UTC15m
2026-05-19 NSE8753 RVE → BOG May 19, 21:25 UTCMay 19, 21:55 UTC30m
2026-05-19 NSE8752 BOG → RVE May 19, 16:40 UTCMay 19, 17:00 UTC20m
2026-05-19 NSE8726 BUN → BOG May 19, 15:10 UTCMay 19, 15:25 UTC15m
2026-05-19 NSE8725 BOG → BUN May 19, 13:05 UTCMay 19, 13:20 UTC15m
2026-05-19 NSE8601 EOH → BOG May 19, 11:40 UTCMay 19, 11:55 UTC15m
2026-05-18 NSE8625 SVI → NVA May 18, 15:40 UTCMay 18, 16:10 UTC30m
2026-05-18 NSE8624 NVA → SVI May 18, 14:00 UTCMay 18, 14:20 UTC20m
2026-05-17 NSE6535 - May 17, 18:30 UTCMay 17, 18:50 UTC20m
2026-05-17 NSE6534 - May 17, 17:15 UTCMay 17, 17:35 UTC20m
2026-05-16 NSE8616 BOG → EOH May 16, 21:55 UTCMay 16, 22:15 UTC20m
2026-05-16 NSE8743 VGZ → BOG May 16, 20:05 UTCMay 16, 20:30 UTC25m
2026-05-16 NSE8742 - May 16, 17:30 UTCMay 16, 17:45 UTC15m
2026-05-16 NSE8737 SJE → BOG May 16, 16:05 UTCMay 16, 16:25 UTC20m
2026-05-16 NSE8736 BOG → SJE May 16, 14:01 UTCMay 16, 14:20 UTC20m
2026-05-15 NSE8743 VGZ → BOG May 15, 23:30 UTCMay 16, 00:00 UTC30m
2026-05-15 NSE8742 - May 15, 20:50 UTCMay 15, 21:05 UTC15m
2026-05-15 NSE8766 EOH → BOG May 15, 18:50 UTCMay 15, 19:05 UTC15m
2026-05-15 NSE8602 BOG → EOH May 15, 10:55 UTCMay 15, 11:10 UTC15m
2026-05-15 NSE8009 PUU → BOG May 15, 02:50 UTCMay 15, 03:10 UTC20m
2026-05-15 NSE7704 BOG → PUU May 15, 00:15 UTCMay 15, 00:25 UTC10m
2026-05-14 NSE8743 VGZ → BOG May 14, 22:35 UTCMay 14, 23:10 UTC35m
2026-05-14 NSE8742 - May 14, 20:00 UTCMay 14, 20:15 UTC15m
2026-05-14 NSE8777 LQM → BOG May 14, 17:35 UTCMay 14, 18:10 UTC35m
2026-04-27 NSE8743 VGZ → BOG Apr 27, 23:15 UTCApr 27, 23:40 UTC25m
2026-04-27 NSE8742 - Apr 27, 20:30 UTCApr 27, 20:50 UTC20m
2026-04-27 NSE8605 EOH → BOG Apr 27, 17:45 UTCApr 27, 17:55 UTC10m
2026-04-27 NSE8724 BOG → UIB Apr 27, 11:45 UTCApr 27, 12:00 UTC15m
2026-04-26 NSE8619 EOH → BOG Apr 26, 23:35 UTCApr 26, 23:50 UTC15m
2026-04-26 NSE8606 BOG → EOH Apr 26, 18:50 UTCApr 26, 19:10 UTC20m
2026-04-26 NSE6751 - Apr 26, 16:35 UTCApr 26, 16:50 UTC15m
2026-04-26 NSE6750 - Apr 26, 13:50 UTCApr 26, 14:10 UTC20m

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 FAC1184 page for operator, model, and routing details .

Mode-S 0AC138 frequently asked

What is Mode-S code 0AC138?
0AC138 is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to FAC1184.
Where is Mode-S 0AC138 registered?
Mode-S code 0AC138 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 0AC138 broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0AC138, octal 02540470, decimal 704,824.
What flights does 0AC138 operate?
Mode-S 0AC138 has broadcast 20 distinct callsigns, including NSE8742, NSE8743, NSE8766, NSE8736, NSE8616.