Apparatus

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sensors Mode-S transponder

0AC9E1

ICAO 24-bit transponder address · allocated to Costa Rica

Currently assigned to HK-5361 · AIRBUS A-320neo

Hex
0AC9E1
Octal
02544741
Decimal
707,041
Country
CR
Tail
HK-5361
Type
A20N
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
308
Distinct callsigns
20
Country
CR
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 0AC9E1.

Country allocation

The ICAO 24-bit address 0AC9E1 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
AVA201 - 9 2026-07-10
AVA155 Avianca - Aerovias Nacionales de Colombia, S.A. 9 2026-07-19
AVA249 - 8 2026-07-14
AVA189 Avianca - Aerovias Nacionales de Colombia, S.A. 8 2026-07-26
AVA161 Avianca - Aerovias Nacionales de Colombia, S.A. 8 2026-05-26
AVA160 - 8 2026-07-02
AVA116 Avianca - Aerovias Nacionales de Colombia, S.A. 8 2026-06-04
AVA197 - 7 2026-07-15
AVA188 Avianca - Aerovias Nacionales de Colombia, S.A. 7 2026-07-26
AVA154 - 7 2026-07-19
AVA248 - 6 2026-07-15
AVA266 - 5 2026-07-17
AVA261 - 5 2026-06-16
AVA247 - 5 2026-07-14
AVA245 Avianca - Aerovias Nacionales de Colombia, S.A. 5 2026-07-26
AVA200 - 5 2026-07-09
AVA198 - 5 2026-07-16
AVA149 - 5 2026-07-11
AVA111 Avianca - Aerovias Nacionales de Colombia, S.A. 5 2026-07-23
AVA073 Avianca - Aerovias Nacionales de Colombia, S.A. 5 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AVA189 DFW → BOG Jul 26, 20:30 UTCJul 26, 22:15 UTC1h 45m
2026-07-26 AVA188 BOG → DFW Jul 26, 13:20 UTCJul 26, 18:10 UTC4h 50m
2026-07-26 AVA245 JFK → BOG Jul 26, 05:55 UTCJul 26, 11:10 UTC5h 16m
2026-07-25 AVA244 BOG → JFK Jul 25, 22:15 UTCJul 26, 03:40 UTC5h 25m
2026-07-25 AVA255 YYZ → BOG Jul 25, 13:50 UTCJul 25, 19:10 UTC5h 20m
2026-07-25 AVA254 BOG → YYZ Jul 25, 06:05 UTCJul 25, 11:40 UTC5h 35m
2026-07-25 AVA9236 CLO → BOG Jul 25, 03:20 UTCJul 25, 03:55 UTC35m
2026-07-25 AVA9215 BOG → CLO Jul 25, 01:30 UTCJul 25, 01:40 UTC10m
2026-07-24 AVA257 CUN → BOG Jul 24, 18:10 UTCJul 24, 21:05 UTC2h 55m
2026-07-24 AVA268 MDE → CUN Jul 24, 15:50 UTCJul 24, 16:35 UTC45m
2026-07-24 AVA112 EZE → MDE Jul 24, 06:20 UTCJul 24, 12:00 UTC5h 40m
2026-07-23 AVA111 MDE → EZE Jul 23, 22:35 UTCJul 24, 04:55 UTC6h 20m
2026-07-23 AVA203 MCO → MDE Jul 23, 17:30 UTCJul 23, 20:45 UTC3h 15m
2026-07-23 AVA202 MDE → MCO Jul 23, 12:05 UTCJul 23, 15:20 UTC3h 15m
2026-07-23 AVA145 - Jul 23, 05:15 UTCJul 23, 09:55 UTC4h 40m
2026-07-22 AVA144 MDE → JFK Jul 22, 22:15 UTCJul 23, 03:20 UTC5h 5m
2026-07-22 AVA269 - Jul 22, 18:00 UTCJul 22, 20:30 UTC2h 30m
2026-07-22 AVA256 BOG → CUN Jul 22, 13:25 UTCJul 22, 16:30 UTC3h 5m
2026-07-21 AVA257 CUN → BOG Jul 21, 18:15 UTCJul 21, 20:50 UTC2h 35m
2026-07-21 AVA268 MDE → CUN Jul 21, 15:00 UTCJul 21, 16:35 UTC1h 35m
2026-07-21 AVA268 MDE → CUN Jul 21, 13:55 UTCJul 21, 14:05 UTC10m
2026-07-21 AVA112 EZE → MDE Jul 21, 06:00 UTCJul 21, 11:55 UTC5h 55m
2026-07-20 AVA111 MDE → EZE Jul 20, 22:35 UTCJul 21, 04:30 UTC5h 54m
2026-07-20 AVA203 - Jul 20, 17:30 UTCJul 20, 20:40 UTC3h 10m
2026-07-20 AVA202 MDE → MCO Jul 20, 12:05 UTCJul 20, 15:20 UTC3h 15m
2026-07-20 AVA145 - Jul 20, 05:20 UTCJul 20, 10:15 UTC4h 55m
2026-07-19 AVA144 - Jul 19, 22:35 UTCJul 20, 03:30 UTC4h 55m
2026-07-19 AVA9340 - Jul 19, 20:20 UTCJul 19, 20:35 UTC15m
2026-07-19 AVA154 - Jul 19, 10:05 UTCJul 19, 16:10 UTC6h 5m
2026-07-19 AVA155 BOG → EZE Jul 19, 03:45 UTCJul 19, 08:25 UTC4h 40m
2026-07-19 AVA155 BOG → EZE Jul 19, 02:45 UTCJul 19, 03:00 UTC15m
2026-07-18 AVA110 MVD → BOG Jul 18, 14:05 UTCJul 18, 20:20 UTC6h 15m
2026-07-18 AVA109 - Jul 18, 11:25 UTCJul 18, 12:10 UTC45m
2026-07-18 AVA109 - Jul 18, 04:25 UTCJul 18, 10:00 UTC5h 35m
2026-07-17 AVA267 MTY → BOG Jul 17, 20:10 UTCJul 18, 00:35 UTC4h 25m
2026-07-17 AVA266 BOG → MTY Jul 17, 13:45 UTCJul 17, 18:29 UTC4h 45m
2026-07-17 AVA263 - Jul 17, 04:59 UTCJul 17, 07:40 UTC2h 40m
2026-07-16 AVA262 BOG → ORD Jul 16, 20:09 UTCJul 17, 02:50 UTC6h 40m
2026-07-16 AVA943 - Jul 16, 17:40 UTCJul 16, 17:54 UTC15m
2026-07-16 AVA198 - Jul 16, 04:55 UTCJul 16, 10:00 UTC5h 5m
2026-07-15 AVA197 - Jul 15, 21:30 UTCJul 16, 03:00 UTC5h 30m
2026-07-15 AVA059 BOG → BOG Jul 15, 12:45 UTCJul 15, 16:35 UTC3h 50m
2026-07-15 AVA248 - Jul 15, 04:30 UTCJul 15, 10:10 UTC5h 40m
2026-07-14 AVA249 - Jul 14, 21:20 UTCJul 15, 01:45 UTC4h 24m
2026-07-14 AVA249 - Jul 14, 20:20 UTCJul 14, 20:35 UTC15m
2026-07-14 AVA154 - Jul 14, 10:25 UTCJul 14, 16:20 UTC5h 55m
2026-07-14 AVA155 - Jul 14, 03:50 UTCJul 14, 08:50 UTC5h 0m
2026-07-14 AVA155 - Jul 14, 02:55 UTCJul 14, 03:10 UTC15m
2026-07-14 AVA247 - Jul 14, 00:45 UTCJul 14, 01:00 UTC15m
2026-07-13 AVA247 - Jul 13, 20:00 UTCJul 13, 22:05 UTC2h 5m

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-5361 page for operator, model, and routing details .

Mode-S 0AC9E1 frequently asked

What is Mode-S code 0AC9E1?
0AC9E1 is an ICAO 24-bit transponder address. Allocated to Costa Rica. Assigned to HK-5361.
Where is Mode-S 0AC9E1 registered?
Mode-S code 0AC9E1 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 0AC9E1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0AC9E1, octal 02544741, decimal 707,041.
What flights does 0AC9E1 operate?
Mode-S 0AC9E1 has broadcast 20 distinct callsigns, including AVA201, AVA155, AVA249, AVA189, AVA161.