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sensors Mode-S transponder

A02ACA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N11KQ · AIRBUS HELICOPTERS EC-130 · operated by AIR METHODS LLC

Hex
A02ACA
Octal
50025312
Decimal
10,496,714
Country
US
Tail
N11KQ
Type
EC30
No current signal · last broadcast 12d ago
Flights observed
66
Distinct callsigns
1
Country
US
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S A02ACA.

Country allocation

The ICAO 24-bit address A02ACA falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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 1 distinct

Callsign Airline Flights Last seen
N11KQ - 66 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N11KQ - Jul 26, 21:15 UTCJul 26, 22:15 UTC1h 0m
2026-07-26 N11KQ - Jul 26, 03:55 UTCJul 26, 04:25 UTC30m
2026-07-26 N11KQ - Jul 26, 03:30 UTCJul 26, 03:50 UTC20m
2026-07-25 N11KQ - Jul 25, 22:35 UTCJul 25, 22:50 UTC15m
2026-07-24 N11KQ - Jul 24, 06:15 UTCJul 24, 07:20 UTC1h 5m
2026-07-24 N11KQ - Jul 24, 05:00 UTCJul 24, 05:15 UTC15m
2026-07-23 N11KQ - Jul 23, 13:35 UTCJul 23, 13:45 UTC10m
2026-07-23 N11KQ - Jul 23, 04:05 UTCJul 23, 04:15 UTC10m
2026-07-23 N11KQ - Jul 23, 03:15 UTCJul 23, 03:25 UTC10m
2026-07-23 N11KQ - Jul 23, 01:50 UTCJul 23, 02:05 UTC15m
2026-07-21 N11KQ - Jul 21, 21:55 UTCJul 21, 22:10 UTC15m
2026-07-20 N11KQ - Jul 20, 18:55 UTCJul 20, 19:25 UTC30m
2026-07-19 N11KQ - Jul 19, 10:15 UTCJul 19, 10:40 UTC25m
2026-07-19 N11KQ - Jul 19, 09:10 UTCJul 19, 09:25 UTC15m
2026-07-19 N11KQ - Jul 19, 07:05 UTCJul 19, 08:40 UTC1h 35m
2026-07-17 N11KQ - Jul 17, 01:20 UTCJul 17, 02:25 UTC1h 5m
2026-07-16 N11KQ - Jul 16, 21:25 UTCJul 16, 22:30 UTC1h 5m
2026-07-16 N11KQ - Jul 16, 20:35 UTCJul 16, 20:45 UTC10m
2026-07-15 N11KQ - Jul 15, 22:05 UTCJul 15, 22:45 UTC40m
2026-07-15 N11KQ - Jul 15, 19:00 UTCJul 15, 21:45 UTC2h 45m
2026-07-13 N11KQ - Jul 13, 15:45 UTCJul 13, 16:20 UTC35m
2026-07-13 N11KQ - Jul 13, 02:40 UTCJul 13, 03:15 UTC35m
2026-07-12 N11KQ - Jul 12, 23:10 UTCJul 12, 23:25 UTC15m
2026-07-12 N11KQ - Jul 12, 13:35 UTCJul 12, 13:50 UTC15m
2026-07-12 N11KQ - Jul 12, 05:45 UTCJul 12, 05:55 UTC10m
2026-07-10 N11KQ - Jul 10, 19:45 UTCJul 10, 20:50 UTC1h 5m
2026-07-10 N11KQ - Jul 10, 17:40 UTCJul 10, 18:00 UTC20m
2026-07-10 N11KQ - Jul 10, 03:05 UTCJul 10, 03:15 UTC10m
2026-07-09 N11KQ - Jul 9, 20:10 UTCJul 9, 21:35 UTC1h 25m
2026-07-09 N11KQ - Jul 9, 19:00 UTCJul 9, 19:10 UTC10m
2026-07-08 N11KQ - Jul 8, 21:45 UTCJul 8, 22:10 UTC25m
2026-07-05 N11KQ - Jul 5, 01:35 UTCJul 5, 02:00 UTC25m
2026-07-02 N11KQ - Jul 2, 15:55 UTCJul 2, 16:50 UTC55m
2026-07-02 N11KQ - Jul 2, 01:30 UTCJul 2, 02:05 UTC35m
2026-07-01 N11KQ - Jul 1, 20:20 UTCJul 1, 20:50 UTC30m
2026-07-01 N11KQ - Jul 1, 19:35 UTCJul 1, 19:40 UTC5m
2026-06-30 N11KQ - Jun 30, 15:25 UTCJun 30, 16:05 UTC40m
2026-06-30 N11KQ - Jun 30, 01:40 UTCJun 30, 01:50 UTC10m
2026-06-29 N11KQ - Jun 29, 21:19 UTCJun 29, 21:30 UTC10m
2026-06-26 N11KQ - Jun 26, 21:04 UTCJun 26, 22:10 UTC1h 5m
2026-06-26 N11KQ - Jun 26, 19:20 UTCJun 26, 19:30 UTC10m
2026-06-26 N11KQ - Jun 26, 16:09 UTCJun 26, 16:20 UTC10m
2026-06-26 N11KQ - Jun 26, 14:59 UTCJun 26, 15:29 UTC30m
2026-06-26 N11KQ - Jun 26, 13:24 UTCJun 26, 13:34 UTC10m
2026-06-25 N11KQ - Jun 25, 18:24 UTCJun 25, 18:45 UTC20m
2026-06-25 N11KQ - Jun 25, 13:05 UTCJun 25, 13:20 UTC15m
2026-06-25 N11KQ - Jun 25, 08:40 UTCJun 25, 09:14 UTC35m
2026-06-24 N11KQ - Jun 24, 21:00 UTCJun 24, 21:24 UTC25m
2026-06-24 N11KQ - Jun 24, 19:49 UTCJun 24, 20:30 UTC40m
2026-06-24 N11KQ - Jun 24, 04:44 UTCJun 24, 05:15 UTC30m

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 N11KQ page for operator, model, and routing details .

Mode-S A02ACA frequently asked

What is Mode-S code A02ACA?
A02ACA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N11KQ.
Where is Mode-S A02ACA registered?
Mode-S code A02ACA is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A02ACA broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A02ACA, octal 50025312, decimal 10,496,714.
What flights does A02ACA operate?
Mode-S A02ACA has broadcast 1 distinct callsign, including N11KQ.