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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 26d ago
Flights observed
139
Distinct callsigns
1
Country
US
Last broadcast
26d 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 - 139 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 N905VU - Jul 23, 21:15 UTCJul 23, 21:30 UTC15m
2026-07-23 N905VU - Jul 23, 01:20 UTCJul 23, 01:35 UTC15m
2026-07-23 N905VU - Jul 23, 00:20 UTCJul 23, 00:35 UTC15m
2026-07-21 N905VU - Jul 21, 22:05 UTCJul 21, 22:20 UTC15m
2026-07-21 N905VU - Jul 21, 21:20 UTCJul 21, 21:30 UTC10m
2026-07-21 N905VU - Jul 21, 16:00 UTCJul 21, 16:15 UTC15m
2026-07-21 N905VU - Jul 21, 15:10 UTCJul 21, 15:20 UTC10m
2026-07-17 N905VU - Jul 17, 15:20 UTCJul 17, 15:35 UTC15m
2026-07-17 N905VU - Jul 17, 05:50 UTCJul 17, 06:00 UTC10m
2026-07-17 N905VU - Jul 17, 05:10 UTCJul 17, 05:15 UTC5m
2026-07-12 N905VU - Jul 12, 09:15 UTCJul 12, 09:30 UTC15m
2026-07-11 N905VU - Jul 11, 05:20 UTCJul 11, 05:35 UTC15m
2026-07-11 N905VU - Jul 11, 04:45 UTCJul 11, 04:55 UTC10m
2026-07-11 N905VU - Jul 11, 03:25 UTCJul 11, 03:35 UTC10m
2026-07-11 N905VU - Jul 11, 01:50 UTCJul 11, 02:00 UTC10m
2026-07-06 N905VU - Jul 6, 02:00 UTCJul 6, 02:10 UTC10m
2026-07-03 N905VU - Jul 3, 07:20 UTCJul 3, 07:30 UTC10m
2026-07-03 N905VU - Jul 3, 06:05 UTCJul 3, 06:15 UTC10m
2026-07-03 N905VU - Jul 3, 02:50 UTCJul 3, 03:00 UTC10m
2026-07-02 N905VU - Jul 2, 20:25 UTCJul 2, 20:40 UTC15m
2026-07-02 N905VU - Jul 2, 19:35 UTCJul 2, 19:45 UTC10m
2026-07-02 N905VU - Jul 2, 18:30 UTCJul 2, 18:50 UTC20m
2026-07-02 N905VU - Jul 2, 16:50 UTCJul 2, 17:05 UTC15m
2026-07-02 N905VU - Jul 2, 15:55 UTCJul 2, 16:05 UTC10m
2026-07-01 N905VU - Jul 1, 06:35 UTCJul 1, 06:50 UTC15m
2026-07-01 N905VU - Jul 1, 00:50 UTCJul 1, 01:05 UTC15m
2026-06-30 N905VU - Jun 30, 18:45 UTCJun 30, 19:20 UTC35m
2026-06-30 N905VU - Jun 30, 17:05 UTCJun 30, 17:15 UTC10m
2026-06-28 N905VU - Jun 28, 07:20 UTCJun 28, 07:29 UTC10m
2026-06-28 N905VU - Jun 28, 06:24 UTCJun 28, 06:34 UTC10m
2026-06-27 N905VU - Jun 27, 16:49 UTCJun 27, 17:14 UTC25m
2026-06-24 N905VU - Jun 24, 22:29 UTCJun 24, 22:45 UTC15m
2026-06-24 N905VU - Jun 24, 20:24 UTCJun 24, 21:09 UTC45m
2026-06-21 N905VU - Jun 21, 05:35 UTCJun 21, 05:54 UTC20m
2026-06-20 N905VU - Jun 20, 08:59 UTCJun 20, 09:19 UTC20m
2026-06-20 N905VU - Jun 20, 06:10 UTCJun 20, 06:24 UTC15m
2026-06-18 N905VU - Jun 18, 10:15 UTCJun 18, 10:30 UTC15m
2026-06-18 N905VU - Jun 18, 09:30 UTCJun 18, 09:40 UTC10m
2026-06-18 N905VU - Jun 18, 08:45 UTCJun 18, 08:55 UTC10m
2026-06-18 N905VU - Jun 18, 00:50 UTCJun 18, 01:05 UTC15m
2026-06-18 N905VU - Jun 18, 00:05 UTCJun 18, 00:15 UTC10m
2026-06-17 N905VU - Jun 17, 19:55 UTCJun 17, 20:10 UTC15m
2026-06-17 N905VU - Jun 17, 18:00 UTCJun 17, 18:45 UTC45m
2026-06-17 N905VU - Jun 17, 16:45 UTCJun 17, 17:25 UTC40m
2026-06-16 N905VU - Jun 16, 22:45 UTCJun 16, 23:00 UTC15m
2026-06-16 N905VU - Jun 16, 21:05 UTCJun 16, 21:25 UTC20m
2026-06-16 N905VU - Jun 16, 20:25 UTCJun 16, 20:50 UTC25m
2026-06-16 N905VU - Jun 16, 19:00 UTCJun 16, 19:15 UTC15m
2026-06-15 N905VU - Jun 15, 13:15 UTCJun 15, 13:30 UTC15m
2026-06-15 N905VU - Jun 15, 11:34 UTCJun 15, 12:30 UTC55m

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 26d 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.