Apparatus

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sensors Mode-S transponder

A9673C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N705BB · HAWKER BEECHCRAFT Hawker 750/850 · operated by MO-AZ LLC

Hex
A9673C
Octal
52263474
Decimal
11,102,012
Country
US
Tail
N705BB
Type
H25B
No current signal · last broadcast 3d ago
Flights observed
138
Distinct callsigns
1
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S A9673C.

Country allocation

The ICAO 24-bit address A9673C 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
N705BB - 138 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N705BB - Jul 18, 20:55 UTCJul 18, 21:35 UTC40m
2026-07-17 N705BB - Jul 17, 14:24 UTCJul 17, 16:04 UTC1h 40m
2026-07-16 N705BB - Jul 16, 19:20 UTCJul 16, 20:45 UTC1h 25m
2026-07-16 N705BB - Jul 16, 16:40 UTCJul 16, 18:10 UTC1h 30m
2026-07-16 N705BB - Jul 16, 14:10 UTCJul 16, 15:14 UTC1h 5m
2026-07-15 N705BB - Jul 15, 20:40 UTCJul 15, 21:15 UTC35m
2026-07-15 N705BB - Jul 15, 18:25 UTCJul 15, 19:20 UTC55m
2026-07-15 N705BB BGR → HYA Jul 15, 15:45 UTCJul 15, 16:30 UTC45m
2026-07-13 N705BB - Jul 13, 23:10 UTCJul 14, 00:05 UTC55m
2026-07-13 N705BB - Jul 13, 22:00 UTCJul 13, 22:20 UTC20m
2026-07-13 N705BB - Jul 13, 18:20 UTCJul 13, 20:55 UTC2h 35m
2026-07-13 N705BB - Jul 13, 14:50 UTCJul 13, 15:20 UTC30m
2026-07-12 N705BB - Jul 12, 14:50 UTCJul 12, 17:30 UTC2h 40m
2026-07-12 N705BB LEX → FNT Jul 12, 12:30 UTCJul 12, 13:30 UTC1h 0m
2026-07-11 N705BB - Jul 11, 16:55 UTCJul 11, 17:55 UTC1h 0m
2026-07-11 N705BB SUS → MUT Jul 11, 15:10 UTCJul 11, 15:45 UTC35m
2026-07-09 N705BB - Jul 9, 18:15 UTCJul 9, 20:35 UTC2h 20m
2026-07-09 N705BB - Jul 9, 02:45 UTCJul 9, 04:15 UTC1h 30m
2026-07-09 N705BB - Jul 9, 01:40 UTCJul 9, 01:50 UTC10m
2026-07-08 N705BB - Jul 8, 22:00 UTCJul 8, 23:45 UTC1h 45m
2026-07-08 N705BB - Jul 8, 01:00 UTCJul 8, 01:35 UTC35m
2026-07-07 N705BB - Jul 7, 15:45 UTCJul 7, 16:20 UTC35m
2026-07-06 N705BB GEG → BFI Jul 6, 22:35 UTCJul 6, 23:25 UTC50m
2026-07-06 N705BB - Jul 6, 17:25 UTCJul 6, 19:05 UTC1h 40m
2026-07-05 N705BB - Jul 5, 23:25 UTCJul 6, 00:15 UTC50m
2026-07-05 N705BB - Jul 5, 20:35 UTCJul 5, 22:35 UTC2h 0m
2026-07-05 N705BB - Jul 5, 17:10 UTCJul 5, 19:25 UTC2h 15m
2026-07-03 N705BB - Jul 3, 18:25 UTCJul 3, 18:50 UTC25m
2026-07-03 N705BB - Jul 3, 14:15 UTCJul 3, 15:20 UTC1h 5m
2026-07-03 N705BB - Jul 3, 11:20 UTCJul 3, 12:10 UTC50m
2026-07-02 N705BB - Jul 2, 14:15 UTCJul 2, 18:05 UTC3h 50m
2026-07-01 N705BB - Jul 1, 16:15 UTCJul 1, 18:05 UTC1h 50m
2026-06-28 N705BB - Jun 28, 17:19 UTCJun 28, 18:00 UTC40m
2026-06-27 N705BB - Jun 27, 15:05 UTCJun 27, 15:49 UTC45m
2026-06-26 N705BB - Jun 26, 21:04 UTCJun 26, 21:59 UTC55m
2026-06-26 N705BB - Jun 26, 18:15 UTCJun 26, 19:35 UTC1h 20m
2026-06-26 N705BB - Jun 26, 15:34 UTCJun 26, 16:05 UTC30m
2026-06-25 N705BB - Jun 25, 23:34 UTCJun 26, 00:55 UTC1h 20m
2026-06-25 N705BB - Jun 25, 20:19 UTCJun 25, 20:45 UTC25m
2026-06-25 N705BB AUS → TEB Jun 25, 15:40 UTCJun 25, 18:55 UTC3h 15m
2026-06-24 N705BB - Jun 24, 19:20 UTCJun 24, 19:49 UTC30m
2026-06-23 N705BB - Jun 23, 23:05 UTCJun 24, 00:59 UTC1h 55m
2026-06-22 N705BB - Jun 22, 15:10 UTCJun 22, 22:15 UTC7h 5m
2026-06-21 N705BB - Jun 21, 20:24 UTCJun 21, 21:05 UTC40m
2026-06-21 N705BB - Jun 21, 16:10 UTCJun 21, 16:59 UTC50m
2026-06-20 N705BB - Jun 20, 17:44 UTCJun 20, 18:34 UTC50m
2026-06-19 N705BB - Jun 19, 18:59 UTCJun 19, 21:09 UTC2h 10m
2026-06-19 N705BB - Jun 19, 15:19 UTCJun 19, 18:09 UTC2h 50m
2026-06-18 N705BB OAK → SJC Jun 18, 22:15 UTCJun 18, 22:35 UTC20m
2026-06-18 N705BB SLE → OAK Jun 18, 18:00 UTCJun 18, 19:15 UTC1h 15m

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 N705BB page for operator, model, and routing details .

Mode-S A9673C frequently asked

What is Mode-S code A9673C?
A9673C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N705BB.
Where is Mode-S A9673C registered?
Mode-S code A9673C 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 A9673C broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9673C, octal 52263474, decimal 11,102,012.
What flights does A9673C operate?
Mode-S A9673C has broadcast 1 distinct callsign, including N705BB.