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sensors Mode-S transponder

AC9C3F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N911VB · HUGHES 500 · operated by CITY OF VIRGINIA BEACH, C/O RISK MANAGEMENT MUNICIPAL CTR

Hex
AC9C3F
Octal
53116077
Decimal
11,312,191
Country
US
Tail
N911VB
Type
H500
No current signal · last broadcast 1d ago
Flights observed
42
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC9C3F.

Country allocation

The ICAO 24-bit address AC9C3F 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
PD2 - 40 2026-07-21

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-07-21 PD2 - Jul 21, 01:40 UTCJul 21, 01:50 UTC10m
2026-07-20 PD2 - Jul 20, 18:40 UTCJul 20, 19:20 UTC40m
2026-07-19 PD2 - Jul 19, 00:45 UTCJul 19, 01:40 UTC55m
2026-07-16 PD2 - Jul 16, 00:10 UTCJul 16, 01:05 UTC55m
2026-07-15 PD2 - Jul 15, 23:15 UTCJul 15, 23:25 UTC10m
2026-07-15 PD2 - Jul 15, 02:05 UTCJul 15, 02:45 UTC40m
2026-07-14 PD2 - Jul 14, 23:15 UTCJul 15, 00:05 UTC50m
2026-07-14 PD2 - Jul 14, 02:30 UTCJul 14, 02:50 UTC20m
2026-07-13 PD2 - Jul 13, 22:55 UTCJul 13, 23:10 UTC15m
2026-07-11 PD2 - Jul 11, 02:45 UTCJul 11, 02:55 UTC10m
2026-07-10 PD2 - Jul 10, 03:30 UTCJul 10, 04:00 UTC30m
2026-07-09 PD2 - Jul 9, 23:25 UTCJul 10, 00:20 UTC55m
2026-07-09 PD2 - Jul 9, 02:00 UTCJul 9, 02:10 UTC10m
2026-07-09 PD2 - Jul 9, 01:05 UTCJul 9, 01:20 UTC15m
2026-07-06 PD2 - Jul 6, 19:20 UTCJul 6, 19:30 UTC10m
2026-07-05 PD2 - Jul 5, 01:45 UTCJul 5, 02:25 UTC40m
2026-07-04 PD2 - Jul 4, 22:25 UTCJul 4, 22:45 UTC20m
2026-07-04 PD2 - Jul 4, 20:00 UTCJul 4, 20:30 UTC30m
2026-07-04 PD2 - Jul 4, 13:50 UTCJul 4, 14:10 UTC20m
2026-07-04 PD2 - Jul 4, 01:10 UTCJul 4, 01:40 UTC30m
2026-07-03 PD2 - Jul 3, 03:00 UTCJul 3, 03:15 UTC15m
2026-07-02 PD2 - Jul 2, 01:45 UTCJul 2, 02:05 UTC20m
2026-07-01 PD2 - Jul 1, 20:25 UTCJul 1, 20:35 UTC10m
2026-07-01 PD2 - Jul 1, 16:10 UTCJul 1, 16:20 UTC10m
2026-07-01 - - Jul 1, 15:15 UTCJul 1, 15:35 UTC20m
2026-07-01 PD2 - Jul 1, 02:05 UTCJul 1, 02:20 UTC15m
2026-06-30 PD2 - Jun 30, 20:05 UTCJun 30, 20:20 UTC15m
2026-06-29 PD2 - Jun 29, 22:55 UTCJun 30, 00:04 UTC1h 10m
2026-06-28 PD2 - Jun 28, 01:34 UTCJun 28, 02:10 UTC35m
2026-06-26 PD2 - Jun 26, 23:55 UTCJun 27, 00:05 UTC10m
2026-06-25 PD2 - Jun 25, 01:35 UTCJun 25, 01:54 UTC20m
2026-06-21 PD2 - Jun 21, 20:14 UTCJun 21, 21:19 UTC1h 5m
2026-06-21 PD2 - Jun 21, 01:10 UTCJun 21, 02:20 UTC1h 10m
2026-06-20 PD2 - Jun 20, 20:40 UTCJun 20, 21:00 UTC20m
2026-06-20 PD2 - Jun 20, 01:05 UTCJun 20, 02:44 UTC1h 40m
2026-05-17 PD2 - May 17, 18:15 UTCMay 17, 18:40 UTC25m
2026-05-16 - - May 16, 02:40 UTCMay 16, 03:00 UTC20m
2026-05-16 PD2 - May 16, 01:20 UTCMay 16, 01:40 UTC20m
2026-05-15 PD2 - May 15, 22:15 UTCMay 15, 22:55 UTC40m
2026-05-13 PD2 - May 13, 02:25 UTCMay 13, 03:05 UTC40m
2026-05-13 PD2 - May 13, 00:05 UTCMay 13, 00:20 UTC15m
2026-05-12 PD2 - May 12, 19:55 UTCMay 12, 20:20 UTC25m

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 N911VB page for operator, model, and routing details .

Mode-S AC9C3F frequently asked

What is Mode-S code AC9C3F?
AC9C3F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N911VB.
Where is Mode-S AC9C3F registered?
Mode-S code AC9C3F 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 AC9C3F broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC9C3F, octal 53116077, decimal 11,312,191.
What flights does AC9C3F operate?
Mode-S AC9C3F has broadcast 1 distinct callsign, including PD2.