Apparatus

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sensors Mode-S transponder

A8FED6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N679TF · operated by AIR FLEET HOLDINGS LLC

Hex
A8FED6
Octal
52177326
Decimal
11,075,286
Country
US
Tail
N679TF
Type
P28A
No current signal · last broadcast 7d ago
Flights observed
146
Distinct callsigns
1
Country
US
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S A8FED6.

Country allocation

The ICAO 24-bit address A8FED6 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
TRF579 - 145 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-06 TRF579 - Jul 6, 17:30 UTCJul 6, 18:45 UTC1h 15m
2026-07-06 TRF579 - Jul 6, 13:45 UTCJul 6, 13:55 UTC10m
2026-07-06 TRF579 - Jul 6, 12:30 UTCJul 6, 13:00 UTC30m
2026-07-05 TRF579 - Jul 5, 20:40 UTCJul 5, 22:00 UTC1h 20m
2026-07-05 TRF579 - Jul 5, 17:10 UTCJul 5, 18:50 UTC1h 40m
2026-07-05 TRF579 - Jul 5, 14:55 UTCJul 5, 16:25 UTC1h 30m
2026-07-05 TRF579 - Jul 5, 08:20 UTCJul 5, 09:25 UTC1h 5m
2026-07-05 TRF579 - Jul 5, 06:45 UTCJul 5, 07:10 UTC25m
2026-07-05 TRF579 - Jul 5, 03:30 UTCJul 5, 04:05 UTC35m
2026-07-04 TRF579 - Jul 4, 20:40 UTCJul 4, 21:00 UTC20m
2026-07-04 TRF579 - Jul 4, 19:40 UTCJul 4, 20:10 UTC30m
2026-07-04 TRF579 - Jul 4, 04:05 UTCJul 4, 04:15 UTC10m
2026-07-04 TRF579 - Jul 4, 03:15 UTCJul 4, 03:25 UTC10m
2026-07-03 TRF579 - Jul 3, 23:55 UTCJul 4, 00:10 UTC15m
2026-07-03 TRF579 - Jul 3, 19:05 UTCJul 3, 19:30 UTC25m
2026-07-03 TRF579 - Jul 3, 13:45 UTCJul 3, 14:05 UTC20m
2026-07-03 TRF579 - Jul 3, 02:25 UTCJul 3, 02:40 UTC15m
2026-07-03 TRF579 - Jul 3, 00:40 UTCJul 3, 01:10 UTC30m
2026-07-02 TRF579 CXO → CXO Jul 2, 22:05 UTCJul 2, 22:50 UTC45m
2026-07-02 TRF579 - Jul 2, 19:20 UTCJul 2, 20:00 UTC40m
2026-07-01 TRF579 - Jul 1, 17:00 UTCJul 1, 18:00 UTC1h 0m
2026-07-01 TRF579 - Jul 1, 01:05 UTCJul 1, 01:15 UTC10m
2026-06-30 TRF579 - Jun 30, 21:55 UTCJun 30, 23:05 UTC1h 10m
2026-06-30 TRF579 - Jun 30, 19:25 UTCJun 30, 20:50 UTC1h 25m
2026-06-30 TRF579 - Jun 30, 16:45 UTCJun 30, 18:05 UTC1h 20m
2026-06-30 TRF579 - Jun 30, 02:35 UTCJun 30, 03:00 UTC25m
2026-06-29 TRF579 - Jun 29, 22:55 UTCJun 29, 23:09 UTC15m
2026-06-29 TRF579 - Jun 29, 20:09 UTCJun 29, 21:44 UTC1h 35m
2026-06-28 TRF579 - Jun 28, 16:29 UTCJun 28, 16:49 UTC20m
2026-06-28 TRF579 - Jun 28, 03:55 UTCJun 28, 04:44 UTC50m
2026-06-28 TRF579 - Jun 28, 00:59 UTCJun 28, 01:44 UTC45m
2026-06-27 TRF579 - Jun 27, 22:55 UTCJun 28, 00:00 UTC1h 5m
2026-06-27 TRF579 - Jun 27, 20:39 UTCJun 27, 22:04 UTC1h 25m
2026-06-27 TRF579 - Jun 27, 16:30 UTCJun 27, 16:39 UTC10m
2026-06-27 TRF579 - Jun 27, 06:09 UTCJun 27, 06:30 UTC20m
2026-06-27 TRF579 - Jun 27, 03:55 UTCJun 27, 04:49 UTC55m
2026-06-27 TRF579 - Jun 27, 00:05 UTCJun 27, 00:44 UTC40m
2026-06-26 TRF579 - Jun 26, 22:29 UTCJun 26, 23:00 UTC30m
2026-06-26 TRF579 - Jun 26, 18:20 UTCJun 26, 18:44 UTC25m
2026-06-26 TRF579 - Jun 26, 16:39 UTCJun 26, 16:49 UTC10m
2026-06-26 TRF579 - Jun 26, 15:15 UTCJun 26, 15:25 UTC10m
2026-06-26 TRF579 - Jun 26, 13:04 UTCJun 26, 13:19 UTC15m
2026-06-25 TRF579 - Jun 25, 21:50 UTCJun 26, 00:30 UTC2h 40m
2026-06-25 TRF579 - Jun 25, 20:09 UTCJun 25, 21:05 UTC55m
2026-06-25 TRF579 - Jun 25, 17:44 UTCJun 25, 19:05 UTC1h 20m
2026-06-25 TRF579 - Jun 25, 16:35 UTCJun 25, 16:50 UTC15m
2026-06-24 TRF579 - Jun 24, 22:25 UTCJun 24, 23:04 UTC40m
2026-06-24 TRF579 - Jun 24, 19:24 UTCJun 24, 21:00 UTC1h 35m
2026-06-23 TRF579 - Jun 23, 22:10 UTCJun 23, 23:19 UTC1h 10m
2026-06-23 TRF579 - Jun 23, 19:39 UTCJun 23, 21:34 UTC1h 55m

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 N679TF page for operator, model, and routing details .

Mode-S A8FED6 frequently asked

What is Mode-S code A8FED6?
A8FED6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N679TF.
Where is Mode-S A8FED6 registered?
Mode-S code A8FED6 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 A8FED6 broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8FED6, octal 52177326, decimal 11,075,286.
What flights does A8FED6 operate?
Mode-S A8FED6 has broadcast 1 distinct callsign, including TRF579.