Apparatus

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sensors Mode-S transponder

A8C7DF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N665M · operated by FAIR HAVEN AVIATION LLC

Hex
A8C7DF
Octal
52143737
Decimal
11,061,215
Country
US
Tail
N665M
Type
SR20
Broadcasting now · callsign N665M · 3,275 ft
Flights observed
50
Distinct callsigns
1
Country
US
Last broadcast
9d ago

Current position

A8C7DF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A8C7DF 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
N665M - 50 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-21 N665M - May 21, 00:35 UTCMay 21, 01:00 UTC25m
2026-05-20 N665M - May 20, 23:40 UTCMay 21, 00:05 UTC25m
2026-05-20 N665M - May 20, 21:40 UTCMay 20, 21:55 UTC15m
2026-05-20 N665M - May 20, 19:25 UTCMay 20, 19:55 UTC30m
2026-05-19 N665M - May 19, 23:05 UTCMay 19, 23:20 UTC15m
2026-05-19 N665M - May 19, 21:45 UTCMay 19, 21:55 UTC10m
2026-05-15 N665M SQL → SQL May 15, 18:20 UTCMay 15, 20:00 UTC1h 40m
2026-05-14 N665M - May 14, 21:10 UTCMay 14, 21:35 UTC25m
2026-05-14 N665M SQL → SQL May 14, 20:55 UTCMay 14, 21:05 UTC10m
2026-05-14 N665M SQL → SQL May 14, 19:50 UTCMay 14, 20:50 UTC1h 0m
2026-05-13 N665M - May 13, 22:30 UTCMay 13, 23:10 UTC40m
2026-05-13 N665M - May 13, 18:50 UTCMay 13, 19:25 UTC35m
2026-05-12 N665M SQL → SQL May 12, 22:31 UTCMay 12, 23:35 UTC1h 5m
2026-05-11 N665M SQL → SQL May 11, 18:05 UTCMay 11, 19:00 UTC55m
2026-05-10 N665M SQL → SQL May 10, 21:10 UTCMay 10, 22:09 UTC1h 0m
2026-05-10 N665M SQL → SQL May 10, 17:45 UTCMay 10, 19:40 UTC1h 55m
2026-05-10 N665M SQL → SQL May 10, 00:24 UTCMay 10, 00:34 UTC10m
2026-05-09 N665M OAK → PAO May 9, 23:44 UTCMay 10, 00:00 UTC15m
2026-05-09 N665M OAK → OAK May 9, 22:34 UTCMay 9, 23:20 UTC45m
2026-05-09 N665M PAO → OAK May 9, 21:14 UTCMay 9, 21:30 UTC15m
2026-05-09 N665M PAO → PAO May 9, 20:49 UTCMay 9, 21:00 UTC10m
2026-05-09 N665M SQL → SQL May 9, 18:15 UTCMay 9, 19:55 UTC1h 40m
2026-05-08 N665M - May 8, 19:40 UTCMay 8, 19:55 UTC15m
2026-05-08 N665M - May 8, 19:25 UTCMay 8, 19:35 UTC10m
2026-05-08 N665M SQL → SQL May 8, 18:00 UTCMay 8, 19:10 UTC1h 10m
2026-05-07 N665M SQL → SQL May 7, 22:25 UTCMay 7, 23:59 UTC1h 34m
2026-05-07 N665M PAO → SQL May 7, 20:25 UTCMay 7, 20:45 UTC20m
2026-05-04 N665M - May 4, 20:45 UTCMay 4, 20:50 UTC5m
2026-05-04 N665M SQL → SQL May 4, 20:10 UTCMay 4, 20:25 UTC15m
2026-05-04 N665M - May 4, 19:30 UTCMay 4, 19:45 UTC15m
2026-05-04 N665M - May 4, 18:50 UTCMay 4, 19:05 UTC15m
2026-05-04 N665M - May 4, 18:35 UTCMay 4, 18:45 UTC10m
2026-05-04 N665M SQL → SQL May 4, 18:05 UTCMay 4, 18:20 UTC15m
2026-05-03 N665M SQL → SQL May 3, 21:35 UTCMay 3, 23:50 UTC2h 15m
2026-05-02 N665M SQL → SQL May 2, 17:50 UTCMay 2, 19:50 UTC2h 0m
2026-05-01 N665M SQL → SQL May 1, 21:50 UTCMay 1, 23:55 UTC2h 5m
2026-04-30 N665M PAO → SQL Apr 30, 20:45 UTCApr 30, 20:50 UTC5m
2026-04-22 N665M SQL → PAO Apr 22, 22:10 UTCApr 22, 22:30 UTC20m
2026-04-18 N665M - Apr 18, 23:25 UTCApr 19, 00:55 UTC1h 30m
2026-04-18 N665M SQL → RDD Apr 18, 15:20 UTCApr 18, 16:40 UTC1h 20m
2026-04-15 N665M - Apr 15, 19:05 UTCApr 15, 20:15 UTC1h 10m
2026-04-15 N665M - Apr 15, 18:55 UTCApr 15, 19:00 UTC5m
2026-04-14 N665M SQL → SQL Apr 14, 23:35 UTCApr 14, 23:40 UTC5m
2026-04-14 N665M - Apr 14, 23:20 UTCApr 14, 23:30 UTC10m
2026-04-14 N665M SQL → SQL Apr 14, 22:55 UTCApr 14, 23:15 UTC20m
2026-04-14 N665M SQL → SQL Apr 14, 22:40 UTCApr 14, 22:50 UTC10m
2026-04-14 N665M SQL → SQL Apr 14, 22:20 UTCApr 14, 22:35 UTC15m
2026-04-13 N665M - Apr 13, 23:10 UTCApr 13, 23:20 UTC10m
2026-04-13 N665M - Apr 13, 22:45 UTCApr 13, 22:55 UTC10m
2026-04-13 N665M SQL → SQL Apr 13, 22:30 UTCApr 13, 22:40 UTC10m

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 N665M page for operator, model, and routing details .

Mode-S A8C7DF frequently asked

What is Mode-S code A8C7DF?
A8C7DF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N665M.
Where is Mode-S A8C7DF registered?
Mode-S code A8C7DF 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 A8C7DF broadcasting right now?
Yes. Mode-S A8C7DF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8C7DF, octal 52143737, decimal 11,061,215.
What flights does A8C7DF operate?
Mode-S A8C7DF has broadcast 1 distinct callsign, including N665M.