Apparatus

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sensors Mode-S transponder

A4F966

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N42BG · PIPER PA-46-500TP · operated by GTW AVIATION LLC

Hex
A4F966
Octal
51174546
Decimal
10,811,750
Country
US
Tail
N42BG
Type
P46T
No current signal · last broadcast 5d ago
Flights observed
73
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S A4F966.

Country allocation

The ICAO 24-bit address A4F966 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
N42BG - 73 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-08 N42BG - Jul 8, 21:20 UTCJul 8, 22:05 UTC45m
2026-07-08 N42BG - Jul 8, 19:25 UTCJul 8, 20:45 UTC1h 20m
2026-07-08 N42BG - Jul 8, 16:00 UTCJul 8, 18:25 UTC2h 25m
2026-07-08 N42BG - Jul 8, 14:40 UTCJul 8, 14:55 UTC15m
2026-06-28 N42BG - Jun 28, 23:04 UTCJun 29, 00:34 UTC1h 30m
2026-06-28 N42BG SJC → BUR Jun 28, 20:54 UTCJun 28, 21:59 UTC1h 5m
2026-06-27 N42BG - Jun 27, 01:19 UTCJun 27, 02:39 UTC1h 20m
2026-06-26 N42BG SJC → BUR Jun 26, 23:25 UTCJun 27, 00:39 UTC1h 15m
2026-06-25 N42BG SJC → SJC Jun 25, 20:25 UTCJun 25, 21:15 UTC50m
2026-06-19 N42BG - Jun 19, 00:05 UTCJun 19, 00:24 UTC19m
2026-06-18 N42BG - Jun 18, 22:00 UTCJun 18, 23:20 UTC1h 20m
2026-06-18 N42BG - Jun 18, 17:35 UTCJun 18, 18:40 UTC1h 5m
2026-06-18 N42BG - Jun 18, 16:05 UTCJun 18, 16:50 UTC45m
2026-06-17 N42BG - Jun 17, 22:20 UTCJun 18, 00:40 UTC2h 20m
2026-06-17 N42BG - Jun 17, 19:35 UTCJun 17, 21:45 UTC2h 10m
2026-06-17 N42BG SJC → HWD Jun 17, 18:10 UTCJun 17, 18:25 UTC15m
2026-06-15 N42BG - Jun 15, 16:45 UTCJun 15, 17:25 UTC40m
2026-06-15 N42BG - Jun 15, 15:19 UTCJun 15, 16:04 UTC45m
2026-06-14 N42BG - Jun 14, 22:10 UTCJun 14, 23:44 UTC1h 35m
2026-06-14 N42BG - Jun 14, 19:45 UTCJun 14, 21:05 UTC1h 20m
2026-06-14 N42BG - Jun 14, 18:30 UTCJun 14, 18:50 UTC20m
2026-06-14 N42BG - Jun 14, 17:05 UTCJun 14, 17:25 UTC20m
2026-06-14 N42BG SJC → APC Jun 14, 16:05 UTCJun 14, 16:35 UTC30m
2026-06-12 N42BG SJC → SJC Jun 12, 23:40 UTCJun 13, 00:45 UTC1h 5m
2026-06-12 N42BG SJC → SJC Jun 12, 00:05 UTCJun 12, 01:55 UTC1h 51m
2026-06-10 N42BG SJC → SJC Jun 10, 23:35 UTCJun 11, 00:55 UTC1h 20m
2026-06-09 N42BG - Jun 9, 00:25 UTCJun 9, 01:20 UTC55m
2026-06-08 N42BG - Jun 8, 22:50 UTCJun 8, 23:35 UTC45m
2026-06-07 N42BG SJC → SJC Jun 7, 21:10 UTCJun 7, 22:30 UTC1h 20m
2026-06-02 N42BG - Jun 2, 21:05 UTCJun 2, 21:25 UTC20m
2026-06-02 N42BG - Jun 2, 19:35 UTCJun 2, 20:20 UTC45m
2026-06-02 N42BG - Jun 2, 17:30 UTCJun 2, 18:15 UTC45m
2026-06-01 N42BG - Jun 1, 21:50 UTCJun 1, 22:35 UTC45m
2026-06-01 N42BG - Jun 1, 19:50 UTCJun 1, 20:40 UTC50m
2026-06-01 N42BG - Jun 1, 18:20 UTCJun 1, 18:35 UTC15m
2026-06-01 N42BG - Jun 1, 00:45 UTCJun 1, 02:00 UTC1h 15m
2026-05-31 N42BG - May 31, 23:15 UTCJun 1, 00:15 UTC1h 0m
2026-05-31 N42BG - May 31, 21:05 UTCMay 31, 21:35 UTC30m
2026-05-31 N42BG SJC → NOT May 31, 19:10 UTCMay 31, 20:25 UTC1h 15m
2026-05-28 N42BG - May 28, 20:25 UTCMay 28, 20:45 UTC20m
2026-05-28 N42BG - May 28, 19:00 UTCMay 28, 19:50 UTC50m
2026-05-28 N42BG SJC → NOT May 28, 17:55 UTCMay 28, 18:25 UTC30m
2026-05-25 N42BG SJC → SJC May 25, 20:09 UTCMay 25, 21:54 UTC1h 45m
2026-05-25 N42BG - May 25, 02:10 UTCMay 25, 03:15 UTC1h 5m
2026-05-24 N42BG - May 24, 14:50 UTCMay 24, 15:50 UTC1h 0m
2026-05-22 N42BG SJC → SJC May 22, 23:20 UTCMay 23, 01:05 UTC1h 45m
2026-05-22 N42BG - May 22, 02:00 UTCMay 22, 02:25 UTC25m
2026-05-22 N42BG - May 22, 01:00 UTCMay 22, 01:30 UTC30m
2026-05-21 N42BG - May 21, 19:50 UTCMay 21, 20:35 UTC45m
2026-05-21 N42BG - May 21, 18:10 UTCMay 21, 18:55 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 N42BG page for operator, model, and routing details .

Mode-S A4F966 frequently asked

What is Mode-S code A4F966?
A4F966 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N42BG.
Where is Mode-S A4F966 registered?
Mode-S code A4F966 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 A4F966 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4F966, octal 51174546, decimal 10,811,750.
What flights does A4F966 operate?
Mode-S A4F966 has broadcast 1 distinct callsign, including N42BG.