Apparatus

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sensors Mode-S transponder

A6E86D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N544SW · PIPER PA-28-140/150/160/180 · operated by CATHERINE MICHAELS INVESTMENT SERVICES LLC

Hex
A6E86D
Octal
51564155
Decimal
10,938,477
Country
US
Tail
N544SW
Type
P28A
No current signal · last broadcast 10d ago
Flights observed
50
Distinct callsigns
1
Country
US
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S A6E86D.

Country allocation

The ICAO 24-bit address A6E86D 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
N544SW - 50 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-03 N544SW CLD → CLD Jul 3, 21:25 UTCJul 3, 22:05 UTC40m
2026-07-02 N544SW - Jul 2, 23:30 UTCJul 2, 23:55 UTC25m
2026-07-02 N544SW - Jul 2, 16:05 UTCJul 2, 16:45 UTC40m
2026-06-29 N544SW - Jun 29, 21:54 UTCJun 29, 22:44 UTC50m
2026-06-29 N544SW - Jun 29, 19:49 UTCJun 29, 20:30 UTC40m
2026-06-28 N544SW MCC → CLD Jun 28, 22:24 UTCJun 29, 01:39 UTC3h 15m
2026-06-28 N544SW SQL → MCC Jun 28, 00:25 UTCJun 28, 01:34 UTC1h 10m
2026-06-26 N544SW - Jun 26, 20:20 UTCJun 26, 21:04 UTC45m
2026-06-26 N544SW - Jun 26, 17:25 UTCJun 26, 19:50 UTC2h 25m
2026-06-25 N544SW - Jun 25, 23:44 UTCJun 26, 00:10 UTC25m
2026-06-25 N544SW - Jun 25, 16:45 UTCJun 25, 16:55 UTC10m
2026-06-25 N544SW CLD → RIV Jun 25, 14:55 UTCJun 25, 15:29 UTC35m
2026-06-22 N544SW CLD → CLD Jun 22, 21:40 UTCJun 22, 22:40 UTC1h 0m
2026-06-22 N544SW - Jun 22, 20:30 UTCJun 22, 21:00 UTC30m
2026-06-20 N544SW - Jun 20, 22:35 UTCJun 20, 23:59 UTC1h 25m
2026-06-20 N544SW - Jun 20, 18:49 UTCJun 20, 20:00 UTC1h 10m
2026-06-18 N544SW CLD → CLD Jun 18, 16:50 UTCJun 18, 17:30 UTC40m
2026-06-18 N544SW CLD → CLD Jun 18, 00:10 UTCJun 18, 00:40 UTC30m
2026-06-17 N544SW CLD → CLD Jun 17, 17:50 UTCJun 17, 18:40 UTC50m
2026-06-16 N544SW - Jun 16, 23:35 UTCJun 17, 00:40 UTC1h 5m
2026-06-16 N544SW - Jun 16, 16:45 UTCJun 16, 17:35 UTC50m
2026-06-15 N544SW CLD → CLD Jun 15, 19:35 UTCJun 15, 20:04 UTC30m
2026-06-14 N544SW - Jun 14, 20:00 UTCJun 14, 21:30 UTC1h 30m
2026-06-14 N544SW - Jun 14, 16:10 UTCJun 14, 17:25 UTC1h 15m
2026-06-14 N544SW - Jun 14, 02:05 UTCJun 14, 02:40 UTC35m
2026-06-13 N544SW - Jun 13, 16:25 UTCJun 13, 17:20 UTC55m
2026-06-12 N544SW SBD → CLD Jun 12, 22:50 UTCJun 12, 23:25 UTC35m
2026-06-12 N544SW - Jun 12, 21:15 UTCJun 12, 21:35 UTC20m
2026-06-12 N544SW - Jun 12, 14:25 UTCJun 12, 14:50 UTC25m
2026-06-11 N544SW - Jun 11, 21:55 UTCJun 11, 22:25 UTC30m
2026-06-11 N544SW - Jun 11, 14:50 UTCJun 11, 15:15 UTC25m
2026-06-07 N544SW - Jun 7, 01:09 UTCJun 7, 02:30 UTC1h 20m
2026-06-06 N544SW - Jun 6, 18:14 UTCJun 6, 19:19 UTC1h 5m
2026-06-05 N544SW - Jun 5, 21:20 UTCJun 5, 21:45 UTC25m
2026-06-05 N544SW - Jun 5, 15:10 UTCJun 5, 15:35 UTC25m
2026-06-03 N544SW - Jun 3, 20:30 UTCJun 3, 21:45 UTC1h 15m
2026-06-03 N544SW CLD → CLD Jun 3, 17:50 UTCJun 3, 19:05 UTC1h 15m
2026-06-03 N544SW CLD → CLD Jun 3, 00:15 UTCJun 3, 01:05 UTC50m
2026-06-02 N544SW - Jun 2, 20:05 UTCJun 2, 20:45 UTC40m
2026-06-02 N544SW CLD → CLD Jun 2, 18:05 UTCJun 2, 18:40 UTC35m
2026-05-30 N544SW - May 30, 22:55 UTCMay 31, 00:10 UTC1h 15m
2026-05-30 N544SW - May 30, 18:45 UTCMay 30, 19:55 UTC1h 10m
2026-05-29 N544SW CLD → CLD May 29, 01:10 UTCMay 29, 02:25 UTC1h 15m
2026-05-23 N544SW - May 23, 21:00 UTCMay 23, 21:35 UTC35m
2026-05-20 N544SW - May 20, 22:05 UTCMay 20, 22:50 UTC45m
2026-05-20 N544SW - May 20, 20:15 UTCMay 20, 20:55 UTC40m
2026-05-19 N544SW - May 19, 23:35 UTCMay 20, 00:40 UTC1h 5m
2026-05-18 N544SW - May 18, 02:00 UTCMay 18, 03:15 UTC1h 15m
2026-05-16 N544SW - May 16, 17:10 UTCMay 16, 18:05 UTC55m
2026-05-16 N544SW CLD → CLD May 16, 00:00 UTCMay 16, 00:45 UTC45m

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 N544SW page for operator, model, and routing details .

Mode-S A6E86D frequently asked

What is Mode-S code A6E86D?
A6E86D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N544SW.
Where is Mode-S A6E86D registered?
Mode-S code A6E86D 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 A6E86D broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6E86D, octal 51564155, decimal 10,938,477.
What flights does A6E86D operate?
Mode-S A6E86D has broadcast 1 distinct callsign, including N544SW.