sensors Mode-S transponder

A5B546

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N467TA · operated by TACTICAL AIR SUPPORT

Hex
A5B546
Octal
51332506
Decimal
10,859,846
Country
US
Tail
N467TA
No current signal · last broadcast Jul 24, 21:40 UTC
Flights observed
47
Distinct callsigns
13
Country
US
Last broadcast
Jul 24, 21:40 UTC

Last known position

Most recent position reported by Mode-S A5B546.

Country allocation

The ICAO 24-bit address A5B546 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 13 distinct

Callsign Airline Flights Last seen
VN4 - 16 2026-07-24
VN2 - 9 2026-07-23
VILLN11 - 5 2026-05-13
VN22 - 4 2026-07-16
VILLN51 - 3 2026-05-14
VN3 - 2 2026-07-24
VILLN12 - 2 2026-04-29
VN31 Vietnam Airlines 1 2026-05-15
VILLN71 - 1 2026-05-05
VILLN21 - 1 2026-05-08
VILLN14 - 1 2026-04-27
VILLN13 - 1 2026-04-23
DN2 - 1 2026-06-30

Recent flights last 47

DateFlightRouteTakeoffLandingDuration
2026-07-24 VN3 - Jul 24, 20:55 UTCJul 24, 21:40 UTC45m
2026-07-24 VN4 - Jul 24, 16:10 UTCJul 24, 16:45 UTC35m
2026-07-23 VN2 - Jul 23, 21:10 UTCJul 23, 21:30 UTC20m
2026-07-22 VN4 - Jul 22, 21:15 UTCJul 22, 22:05 UTC50m
2026-07-22 VN4 - Jul 22, 17:10 UTCJul 22, 18:20 UTC1h 10m
2026-07-20 VN2 - Jul 20, 22:35 UTCJul 20, 23:10 UTC35m
2026-07-20 VN4 - Jul 20, 16:15 UTCJul 20, 17:15 UTC1h 0m
2026-07-17 VN2 - Jul 17, 16:29 UTCJul 17, 17:25 UTC55m
2026-07-16 VN22 - Jul 16, 22:55 UTCJul 16, 23:20 UTC25m
2026-07-14 VN3 - Jul 14, 16:00 UTCJul 14, 16:55 UTC55m
2026-07-13 VN4 - Jul 13, 22:40 UTCJul 13, 23:35 UTC55m
2026-07-09 VN2 - Jul 9, 13:55 UTCJul 9, 14:55 UTC1h 0m
2026-07-08 VN4 - Jul 8, 13:55 UTCJul 8, 14:35 UTC40m
2026-07-07 VN4 - Jul 7, 14:55 UTCJul 7, 15:35 UTC40m
2026-07-02 VN2 - Jul 2, 19:55 UTCJul 2, 20:45 UTC50m
2026-07-01 VN4 - Jul 1, 19:00 UTCJul 1, 19:55 UTC55m
2026-07-01 VN4 - Jul 1, 14:50 UTCJul 1, 15:35 UTC45m
2026-06-30 DN2 - Jun 30, 17:20 UTCJun 30, 17:55 UTC35m
2026-06-29 VN4 - Jun 29, 20:15 UTCJun 29, 21:05 UTC50m
2026-06-29 VN4 - Jun 29, 14:25 UTCJun 29, 15:14 UTC50m
2026-06-26 VN4 - Jun 26, 12:05 UTCJun 26, 12:55 UTC50m
2026-06-24 VN2 - Jun 24, 13:10 UTCJun 24, 14:04 UTC55m
2026-06-23 VN22 - Jun 23, 16:44 UTCJun 23, 17:34 UTC50m
2026-06-18 VN22 - Jun 18, 17:40 UTCJun 18, 18:25 UTC45m
2026-06-11 VN4 - Jun 11, 19:00 UTCJun 11, 19:45 UTC45m
2026-06-05 VN2 - Jun 5, 16:15 UTCJun 5, 17:10 UTC55m
2026-06-03 VN2 - Jun 3, 20:40 UTCJun 3, 21:45 UTC1h 5m
2026-05-29 VN2 - May 29, 15:30 UTCMay 29, 16:00 UTC30m
2026-05-28 VN4 - May 28, 15:50 UTCMay 28, 16:45 UTC55m
2026-05-21 VN22 - May 21, 21:30 UTCMay 21, 22:30 UTC1h 0m
2026-05-20 VN4 - May 20, 21:30 UTCMay 20, 22:25 UTC55m
2026-05-18 VN4 - May 18, 21:40 UTCMay 18, 22:45 UTC1h 5m
2026-05-15 VN31 SGN → FRA May 15, 18:05 UTCMay 15, 18:50 UTC45m
2026-05-14 VILLN51 - May 14, 12:50 UTCMay 14, 14:05 UTC1h 15m
2026-05-13 VILLN51 - May 13, 22:30 UTCMay 13, 23:30 UTC1h 0m
2026-05-13 VILLN51 - May 13, 20:35 UTCMay 13, 21:40 UTC1h 5m
2026-05-13 VILLN11 - May 13, 16:00 UTCMay 13, 16:55 UTC55m
2026-05-12 VILLN11 - May 12, 18:00 UTCMay 12, 18:10 UTC10m
2026-05-12 VILLN11 - May 12, 16:30 UTCMay 12, 16:50 UTC20m
2026-05-08 VILLN21 - May 8, 22:50 UTCMay 8, 23:45 UTC55m
2026-05-05 VILLN71 - May 5, 22:20 UTCMay 5, 23:50 UTC1h 30m
2026-04-30 VILLN11 - Apr 30, 17:25 UTCApr 30, 18:25 UTC1h 0m
2026-04-29 VILLN12 - Apr 29, 17:45 UTCApr 29, 18:40 UTC55m
2026-04-28 VILLN12 - Apr 28, 18:05 UTCApr 28, 18:35 UTC30m
2026-04-27 VILLN14 - Apr 27, 18:05 UTCApr 27, 19:00 UTC55m
2026-04-23 VILLN13 - Apr 23, 21:55 UTCApr 23, 22:15 UTC20m
2026-04-21 VILLN11 - Apr 21, 22:30 UTCApr 21, 23:30 UTC1h 0m

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 N467TA page for operator, model, and routing details .

Mode-S A5B546 frequently asked

What is Mode-S code A5B546?
A5B546 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N467TA.
Where is Mode-S A5B546 registered?
Mode-S code A5B546 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 A5B546 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5B546, octal 51332506, decimal 10,859,846.
What flights does A5B546 operate?
Mode-S A5B546 has broadcast 13 distinct callsigns, including VN4, VN2, VILLN11, VN22, VILLN51.