Apparatus

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sensors Mode-S transponder

A6A2C5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N52684 · CESSNA 177RG Cardinal RG · operated by ALTAIR ADVANCED INDUSTRIES INC

Hex
A6A2C5
Octal
51521305
Decimal
10,920,645
Country
US
Tail
N52684
Type
C77R
No current signal · last broadcast Jul 25, 00:55 UTC
Flights observed
21
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 00:55 UTC

Last known position

Most recent position reported by Mode-S A6A2C5.

Country allocation

The ICAO 24-bit address A6A2C5 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
N52684 - 21 2026-07-25

Recent flights last 21

DateFlightRouteTakeoffLandingDuration
2026-07-25 N52684 - Jul 25, 00:45 UTCJul 25, 00:55 UTC10m
2026-07-24 N52684 - Jul 24, 20:05 UTCJul 24, 20:20 UTC15m
2026-07-17 N52684 - Jul 17, 00:04 UTCJul 17, 00:20 UTC15m
2026-07-16 N52684 RCE → BLI Jul 16, 17:25 UTCJul 16, 17:45 UTC20m
2026-07-06 N52684 - Jul 6, 22:40 UTCJul 6, 22:55 UTC15m
2026-07-06 N52684 RCE → BLI Jul 6, 16:10 UTCJul 6, 16:30 UTC20m
2026-06-18 N52684 - Jun 18, 04:15 UTCJun 18, 04:30 UTC15m
2026-06-17 N52684 - Jun 17, 23:00 UTCJun 17, 23:20 UTC20m
2026-06-12 N52684 - Jun 12, 03:45 UTCJun 12, 04:00 UTC15m
2026-06-11 N52684 - Jun 11, 23:40 UTCJun 11, 23:55 UTC15m
2026-06-04 N52684 - Jun 4, 01:05 UTCJun 4, 01:25 UTC20m
2026-06-03 N52684 RCE → BLI Jun 3, 17:40 UTCJun 3, 18:00 UTC20m
2026-06-02 N52684 - Jun 2, 03:45 UTCJun 2, 04:00 UTC15m
2026-06-02 N52684 - Jun 2, 00:25 UTCJun 2, 00:40 UTC15m
2026-05-22 N52684 - May 22, 02:15 UTCMay 22, 02:30 UTC15m
2026-05-21 N52684 - May 21, 18:10 UTCMay 21, 18:25 UTC15m
2026-05-21 N52684 - May 21, 03:20 UTCMay 21, 03:40 UTC20m
2026-05-20 N52684 - May 20, 18:15 UTCMay 20, 18:25 UTC10m
2026-05-19 N52684 - May 19, 01:45 UTCMay 19, 02:00 UTC15m
2026-05-19 N52684 - May 19, 00:25 UTCMay 19, 01:10 UTC45m
2026-05-18 N52684 - May 18, 23:25 UTCMay 18, 23:40 UTC15m

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 N52684 page for operator, model, and routing details .

Mode-S A6A2C5 frequently asked

What is Mode-S code A6A2C5?
A6A2C5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N52684.
Where is Mode-S A6A2C5 registered?
Mode-S code A6A2C5 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 A6A2C5 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 00:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6A2C5, octal 51521305, decimal 10,920,645.
What flights does A6A2C5 operate?
Mode-S A6A2C5 has broadcast 1 distinct callsign, including N52684.