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sensors Mode-S transponder

AC83AD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N905VU · operated by VANDERBILT UNIVERSITY MEDICAL CENTER

Hex
AC83AD
Octal
53101655
Decimal
11,305,901
Country
US
Tail
N905VU
No current signal · last broadcast 16h ago
Flights observed
65
Distinct callsigns
1
Country
US
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S AC83AD.

Country allocation

The ICAO 24-bit address AC83AD 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
N905VU - 65 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 N905VU - Jun 2, 20:40 UTCJun 2, 20:55 UTC15m
2026-06-02 N905VU - Jun 2, 17:50 UTCJun 2, 18:05 UTC15m
2026-06-02 N905VU - Jun 2, 17:20 UTCJun 2, 17:35 UTC15m
2026-06-02 N905VU - Jun 2, 02:35 UTCJun 2, 02:50 UTC15m
2026-06-02 N905VU - Jun 2, 01:45 UTCJun 2, 02:00 UTC15m
2026-05-31 N905VU - May 31, 17:30 UTCMay 31, 17:40 UTC10m
2026-05-31 N905VU - May 31, 16:15 UTCMay 31, 17:00 UTC45m
2026-05-31 N905VU - May 31, 12:45 UTCMay 31, 13:20 UTC35m
2026-05-31 N905VU - May 31, 11:45 UTCMay 31, 12:00 UTC15m
2026-05-29 N905VU - May 29, 03:30 UTCMay 29, 03:45 UTC15m
2026-05-29 N905VU - May 29, 02:45 UTCMay 29, 03:00 UTC15m
2026-05-27 N905VU - May 27, 09:05 UTCMay 27, 09:30 UTC25m
2026-05-27 N905VU - May 27, 07:30 UTCMay 27, 08:00 UTC30m
2026-05-27 N905VU - May 27, 04:39 UTCMay 27, 04:49 UTC10m
2026-05-26 N905VU - May 26, 23:19 UTCMay 26, 23:35 UTC15m
2026-05-26 N905VU - May 26, 22:20 UTCMay 26, 22:35 UTC15m
2026-05-26 N905VU - May 26, 20:15 UTCMay 26, 20:29 UTC15m
2026-05-26 N905VU - May 26, 19:05 UTCMay 26, 19:20 UTC15m
2026-05-25 N905VU - May 25, 18:20 UTCMay 25, 18:45 UTC25m
2026-05-25 N905VU - May 25, 16:50 UTCMay 25, 17:15 UTC25m
2026-05-24 N905VU - May 24, 08:30 UTCMay 24, 08:45 UTC15m
2026-05-24 N905VU - May 24, 07:50 UTCMay 24, 08:00 UTC10m
2026-05-23 N905VU - May 23, 03:30 UTCMay 23, 03:55 UTC25m
2026-05-19 N905VU - May 19, 17:50 UTCMay 19, 18:05 UTC15m
2026-05-19 N905VU - May 19, 16:35 UTCMay 19, 16:50 UTC15m
2026-05-17 N905VU - May 17, 21:55 UTCMay 17, 22:15 UTC20m
2026-05-17 N905VU - May 17, 21:01 UTCMay 17, 21:10 UTC10m
2026-05-17 N905VU - May 17, 03:40 UTCMay 17, 03:55 UTC15m
2026-05-17 N905VU - May 17, 02:35 UTCMay 17, 02:50 UTC15m
2026-05-16 N905VU - May 16, 04:05 UTCMay 16, 04:20 UTC15m
2026-05-16 N905VU - May 16, 03:00 UTCMay 16, 03:30 UTC30m
2026-05-16 N905VU - May 16, 01:10 UTCMay 16, 01:20 UTC10m
2026-05-15 N905VU - May 15, 23:20 UTCMay 15, 23:30 UTC10m
2026-05-15 N905VU - May 15, 22:35 UTCMay 15, 22:40 UTC5m
2026-05-15 N905VU - May 15, 21:30 UTCMay 15, 21:45 UTC15m
2026-05-15 N905VU - May 15, 13:25 UTCMay 15, 13:45 UTC20m
2026-05-15 N905VU - May 15, 12:05 UTCMay 15, 12:20 UTC15m
2026-05-13 N905VU - May 13, 02:20 UTCMay 13, 02:35 UTC15m
2026-05-13 N905VU - May 13, 01:30 UTCMay 13, 01:45 UTC15m
2026-05-12 N905VU - May 12, 21:45 UTCMay 12, 22:01 UTC15m
2026-05-12 N905VU - May 12, 20:45 UTCMay 12, 20:55 UTC10m
2026-05-12 N905VU - May 12, 07:40 UTCMay 12, 08:00 UTC20m
2026-05-12 N905VU - May 12, 06:50 UTCMay 12, 06:55 UTC5m
2026-05-12 N905VU - May 12, 05:35 UTCMay 12, 05:55 UTC20m
2026-05-11 N905VU - May 11, 02:40 UTCMay 11, 03:15 UTC35m
2026-05-11 N905VU - May 11, 01:30 UTCMay 11, 02:00 UTC30m
2026-05-10 N905VU - May 10, 22:20 UTCMay 10, 22:35 UTC15m
2026-05-10 N905VU - May 10, 20:30 UTCMay 10, 21:10 UTC40m
2026-05-09 N905VU - May 9, 19:19 UTCMay 9, 19:55 UTC35m
2026-05-09 N905VU - May 9, 18:05 UTCMay 9, 18:25 UTC20m

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 N905VU page for operator, model, and routing details .

Mode-S AC83AD frequently asked

What is Mode-S code AC83AD?
AC83AD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N905VU.
Where is Mode-S AC83AD registered?
Mode-S code AC83AD 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 AC83AD broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC83AD, octal 53101655, decimal 11,305,901.
What flights does AC83AD operate?
Mode-S AC83AD has broadcast 1 distinct callsign, including N905VU.