Apparatus

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sensors Mode-S transponder

A9B329

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N724HT · operated by BANK OF UTAH TRUSTEE

Hex
A9B329
Octal
52331451
Decimal
11,121,449
Country
US
Tail
N724HT
Type
B214
No current signal · last broadcast 2h ago
Flights observed
32
Distinct callsigns
1
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A9B329.

Country allocation

The ICAO 24-bit address A9B329 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
N724HT - 32 2026-07-22

Recent flights last 32

DateFlightRouteTakeoffLandingDuration
2026-07-22 N724HT - Jul 22, 13:15 UTCJul 22, 13:30 UTC15m
2026-07-22 N724HT - Jul 22, 11:35 UTCJul 22, 12:10 UTC35m
2026-07-20 N724HT - Jul 20, 15:20 UTCJul 20, 15:50 UTC30m
2026-07-15 N724HT SKG → SKG Jul 15, 13:20 UTCJul 15, 16:20 UTC3h 0m
2026-07-15 N724HT SKG → SKG Jul 15, 09:20 UTCJul 15, 10:40 UTC1h 20m
2026-07-14 N724HT - Jul 14, 10:00 UTCJul 14, 10:25 UTC25m
2026-07-13 N724HT - Jul 13, 12:35 UTCJul 13, 13:05 UTC30m
2026-07-12 N724HT - Jul 12, 17:45 UTCJul 12, 18:20 UTC35m
2026-07-12 N724HT - Jul 12, 15:15 UTCJul 12, 15:35 UTC20m
2026-07-11 N724HT - Jul 11, 15:15 UTCJul 11, 15:25 UTC10m
2026-07-11 N724HT - Jul 11, 12:30 UTCJul 11, 12:40 UTC10m
2026-07-10 N724HT - Jul 10, 14:20 UTCJul 10, 14:45 UTC25m
2026-07-05 N724HT - Jul 5, 15:00 UTCJul 5, 15:40 UTC40m
2026-07-05 N724HT - Jul 5, 10:55 UTCJul 5, 13:35 UTC2h 40m
2026-07-05 N724HT SKG → SKG Jul 5, 06:55 UTCJul 5, 09:55 UTC3h 0m
2026-07-05 N724HT - Jul 5, 02:55 UTCJul 5, 05:50 UTC2h 55m
2026-07-04 N724HT - Jul 4, 15:00 UTCJul 4, 16:05 UTC1h 5m
2026-07-04 N724HT - Jul 4, 14:05 UTCJul 4, 14:25 UTC20m
2026-07-04 N724HT - Jul 4, 10:35 UTCJul 4, 13:20 UTC2h 45m
2026-07-03 N724HT - Jul 3, 08:20 UTCJul 3, 08:35 UTC15m
2026-07-02 N724HT - Jul 2, 15:50 UTCJul 2, 16:30 UTC40m
2026-07-01 N724HT - Jul 1, 15:15 UTCJul 1, 18:10 UTC2h 55m
2026-06-30 N724HT - Jun 30, 15:25 UTCJun 30, 18:25 UTC3h 0m
2026-06-30 N724HT - Jun 30, 11:55 UTCJun 30, 14:55 UTC3h 0m
2026-06-29 N724HT - Jun 29, 13:59 UTCJun 29, 15:14 UTC1h 15m
2026-06-22 N724HT SKG → SKG Jun 22, 14:40 UTCJun 22, 14:59 UTC20m
2026-06-22 N724HT SKG → SKG Jun 22, 11:54 UTCJun 22, 12:10 UTC15m
2026-06-20 N724HT SKG → SKG Jun 20, 16:14 UTCJun 20, 17:29 UTC1h 15m
2026-06-17 N724HT SKG → SKG Jun 17, 13:30 UTCJun 17, 15:30 UTC2h 0m
2026-06-09 N724HT - Jun 9, 13:10 UTCJun 9, 14:15 UTC1h 5m
2026-06-06 N724HT - Jun 6, 14:04 UTCJun 6, 15:44 UTC1h 40m
2026-06-01 N724HT - Jun 1, 13:30 UTCJun 1, 14:40 UTC1h 10m

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 N724HT page for operator, model, and routing details .

Mode-S A9B329 frequently asked

What is Mode-S code A9B329?
A9B329 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N724HT.
Where is Mode-S A9B329 registered?
Mode-S code A9B329 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 A9B329 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9B329, octal 52331451, decimal 11,121,449.
What flights does A9B329 operate?
Mode-S A9B329 has broadcast 1 distinct callsign, including N724HT.