Apparatus

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sensors Mode-S transponder

A6DFD8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N542FA · SWEARINGEN Metro · operated by CBG LLC

Hex
A6DFD8
Octal
51557730
Decimal
10,936,280
Country
US
Tail
N542FA
Type
SW4
No current signal · last broadcast 1h ago
Flights observed
50
Distinct callsigns
7
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A6DFD8.

Country allocation

The ICAO 24-bit address A6DFD8 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 7 distinct

Callsign Airline Flights Last seen
LYM414 Key Lime Air 29 2026-05-27
LYM593 Key Lime Air 15 2026-06-03
LYM711 Key Lime Air 2 2026-05-22
LYM777 Key Lime Air 1 2026-05-11
LYM717 Key Lime Air 1 2026-05-07
LYM137 Key Lime Air 1 2026-06-02
LYM117 Key Lime Air 1 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 LYM593 DEN → BFF Jun 3, 01:40 UTCJun 3, 02:00 UTC20m
2026-06-02 LYM137 DEN → GXY Jun 2, 13:15 UTCJun 2, 13:45 UTC30m
2026-06-02 LYM593 DEN → BFF Jun 2, 02:00 UTCJun 2, 02:30 UTC30m
2026-06-01 LYM117 DEN → CEZ Jun 1, 22:45 UTCJun 1, 23:15 UTC30m
2026-05-29 LYM593 DEN → BFF May 29, 01:50 UTCMay 29, 02:25 UTC35m
2026-05-28 LYM593 DEN → BFF May 28, 13:30 UTCMay 28, 14:00 UTC30m
2026-05-28 LYM593 DEN → BFF May 28, 01:40 UTCMay 28, 02:20 UTC40m
2026-05-27 LYM593 DEN → BFF May 27, 13:10 UTCMay 27, 13:35 UTC25m
2026-05-27 LYM414 DEN → LBF May 27, 01:24 UTCMay 27, 01:49 UTC25m
2026-05-26 LYM414 DEN → LBF May 26, 21:34 UTCMay 26, 22:09 UTC35m
2026-05-23 LYM593 DEN → BFF May 23, 14:50 UTCMay 23, 15:25 UTC35m
2026-05-23 LYM593 DEN → BFF May 23, 13:00 UTCMay 23, 13:25 UTC25m
2026-05-23 LYM414 DEN → LBF May 23, 01:15 UTCMay 23, 01:40 UTC25m
2026-05-22 LYM414 DEN → LBF May 22, 12:50 UTCMay 22, 13:10 UTC20m
2026-05-22 LYM711 DEN → GXY May 22, 02:05 UTCMay 22, 02:50 UTC45m
2026-05-21 LYM414 DEN → LBF May 21, 12:30 UTCMay 21, 13:01 UTC30m
2026-05-21 LYM414 DEN → LBF May 21, 01:40 UTCMay 21, 02:15 UTC35m
2026-05-20 LYM414 DEN → LBF May 20, 12:30 UTCMay 20, 13:00 UTC30m
2026-05-20 LYM414 DEN → LBF May 20, 01:35 UTCMay 20, 02:10 UTC35m
2026-05-19 LYM414 DEN → LBF May 19, 12:40 UTCMay 19, 13:10 UTC30m
2026-05-19 LYM414 DEN → LBF May 19, 01:20 UTCMay 19, 02:05 UTC45m
2026-05-18 LYM414 DEN → LBF May 18, 22:05 UTCMay 18, 22:35 UTC30m
2026-05-16 LYM414 DEN → LBF May 16, 01:20 UTCMay 16, 01:45 UTC25m
2026-05-15 LYM414 DEN → LBF May 15, 12:45 UTCMay 15, 13:15 UTC30m
2026-05-15 LYM414 DEN → LBF May 15, 01:25 UTCMay 15, 01:50 UTC25m
2026-05-14 LYM414 DEN → LBF May 14, 12:35 UTCMay 14, 13:10 UTC35m
2026-05-14 LYM414 DEN → LBF May 14, 01:30 UTCMay 14, 02:00 UTC30m
2026-05-13 LYM414 DEN → LBF May 13, 12:30 UTCMay 13, 13:05 UTC35m
2026-05-13 LYM414 DEN → LBF May 13, 01:15 UTCMay 13, 01:40 UTC25m
2026-05-12 LYM414 DEN → LBF May 12, 12:35 UTCMay 12, 13:05 UTC30m
2026-05-11 LYM777 DEN → MCK May 11, 19:35 UTCMay 11, 21:00 UTC1h 25m
2026-05-07 LYM717 DEN → GXY May 7, 15:45 UTCMay 7, 17:50 UTC2h 5m
2026-04-29 LYM593 DEN → BFF Apr 29, 01:15 UTCApr 29, 01:54 UTC40m
2026-04-28 LYM711 DEN → GXY Apr 28, 13:25 UTCApr 28, 13:50 UTC25m
2026-04-24 LYM593 DEN → BFF Apr 24, 01:35 UTCApr 24, 02:20 UTC45m
2026-04-23 LYM593 DEN → BFF Apr 23, 13:30 UTCApr 23, 13:50 UTC20m
2026-04-23 LYM593 DEN → BFF Apr 23, 01:35 UTCApr 23, 02:10 UTC35m
2026-04-22 LYM593 DEN → BFF Apr 22, 13:15 UTCApr 22, 13:45 UTC30m
2026-04-22 LYM593 DEN → BFF Apr 22, 01:35 UTCApr 22, 02:10 UTC35m
2026-04-21 LYM593 DEN → BFF Apr 21, 13:10 UTCApr 21, 13:35 UTC25m
2026-04-18 LYM414 DEN → LBF Apr 18, 01:25 UTCApr 18, 01:50 UTC25m
2026-04-17 LYM414 DEN → LBF Apr 17, 12:15 UTCApr 17, 12:45 UTC30m
2026-04-17 LYM414 DEN → LBF Apr 17, 01:20 UTCApr 17, 01:40 UTC20m
2026-04-16 LYM414 DEN → LBF Apr 16, 12:29 UTCApr 16, 13:00 UTC30m
2026-04-16 LYM414 DEN → LBF Apr 16, 01:15 UTCApr 16, 01:50 UTC35m
2026-04-15 LYM414 DEN → LBF Apr 15, 13:01 UTCApr 15, 13:10 UTC10m
2026-04-15 LYM414 DEN → LBF Apr 15, 12:40 UTCApr 15, 12:55 UTC15m
2026-04-15 LYM414 DEN → LBF Apr 15, 00:55 UTCApr 15, 01:35 UTC40m
2026-04-14 LYM414 DEN → LBF Apr 14, 12:50 UTCApr 14, 13:00 UTC10m
2026-04-14 LYM414 DEN → LBF Apr 14, 12:30 UTCApr 14, 12:45 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 N542FA page for operator, model, and routing details .

Mode-S A6DFD8 frequently asked

What is Mode-S code A6DFD8?
A6DFD8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N542FA.
Where is Mode-S A6DFD8 registered?
Mode-S code A6DFD8 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 A6DFD8 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6DFD8, octal 51557730, decimal 10,936,280.
What flights does A6DFD8 operate?
Mode-S A6DFD8 has broadcast 7 distinct callsigns, including LYM414, LYM593, LYM711, LYM777, LYM717.