Apparatus

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sensors Mode-S transponder

A9638B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N704BH · CESSNA 150 · operated by CLOUD BUDDIES LLC

Hex
A9638B
Octal
52261613
Decimal
11,101,067
Country
US
Tail
N704BH
Type
C150
No current signal · last broadcast 5d ago
Flights observed
128
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S A9638B.

Country allocation

The ICAO 24-bit address A9638B 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
N704BH - 127 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 N704BH - Jul 9, 02:50 UTCJul 9, 03:10 UTC20m
2026-07-09 N704BH - Jul 9, 01:55 UTCJul 9, 02:15 UTC20m
2026-07-08 N704BH - Jul 8, 22:55 UTCJul 9, 01:20 UTC2h 25m
2026-07-08 N704BH - Jul 8, 21:30 UTCJul 8, 21:40 UTC10m
2026-07-02 N704BH - Jul 2, 14:05 UTCJul 2, 14:20 UTC15m
2026-07-02 N704BH - Jul 2, 12:40 UTCJul 2, 13:05 UTC25m
2026-07-02 N704BH - Jul 2, 11:00 UTCJul 2, 12:05 UTC1h 5m
2026-07-01 N704BH - Jul 1, 19:30 UTCJul 1, 21:55 UTC2h 25m
2026-07-01 N704BH - Jul 1, 14:15 UTCJul 1, 15:15 UTC1h 0m
2026-07-01 N704BH - Jul 1, 11:40 UTCJul 1, 13:00 UTC1h 20m
2026-06-29 N704BH - Jun 29, 21:50 UTCJun 29, 22:30 UTC40m
2026-06-29 N704BH - Jun 29, 18:55 UTCJun 29, 19:09 UTC15m
2026-06-29 N704BH - Jun 29, 17:40 UTCJun 29, 17:59 UTC20m
2026-06-25 N704BH - Jun 25, 21:55 UTCJun 25, 22:39 UTC45m
2026-06-25 N704BH - Jun 25, 20:45 UTCJun 25, 21:10 UTC25m
2026-06-25 N704BH - Jun 25, 17:39 UTCJun 25, 19:34 UTC1h 55m
2026-06-24 N704BH - Jun 24, 22:04 UTCJun 24, 22:55 UTC50m
2026-06-24 N704BH - Jun 24, 19:20 UTCJun 24, 19:34 UTC15m
2026-06-24 N704BH - Jun 24, 18:25 UTCJun 24, 18:39 UTC15m
2026-06-24 N704BH - Jun 24, 17:34 UTCJun 24, 17:50 UTC15m
2026-06-24 N704BH - Jun 24, 11:45 UTCJun 24, 13:24 UTC1h 40m
2026-06-24 N704BH - Jun 24, 09:34 UTCJun 24, 11:09 UTC1h 35m
2026-06-21 N704BH - Jun 21, 21:05 UTCJun 21, 22:00 UTC55m
2026-06-21 N704BH - Jun 21, 18:00 UTCJun 21, 20:14 UTC2h 15m
2026-06-21 N704BH - Jun 21, 15:40 UTCJun 21, 17:05 UTC1h 25m
2026-06-20 N704BH - Jun 20, 18:54 UTCJun 20, 19:29 UTC35m
2026-06-20 N704BH - Jun 20, 16:14 UTCJun 20, 17:10 UTC55m
2026-06-17 N704BH - Jun 17, 22:30 UTCJun 17, 23:25 UTC55m
2026-06-17 N704BH - Jun 17, 20:20 UTCJun 17, 21:30 UTC1h 10m
2026-06-17 N704BH - Jun 17, 17:40 UTCJun 17, 19:20 UTC1h 40m
2026-06-17 N704BH - Jun 17, 15:46 UTCJun 17, 16:40 UTC55m
2026-06-17 N704BH - Jun 17, 14:25 UTCJun 17, 15:15 UTC50m
2026-06-16 N704BH - Jun 16, 19:50 UTCJun 16, 21:30 UTC1h 40m
2026-06-16 N704BH - Jun 16, 17:49 UTCJun 16, 19:00 UTC1h 10m
2026-06-16 N704BH - Jun 16, 15:50 UTCJun 16, 16:45 UTC55m
2026-06-11 N704BH - Jun 11, 19:45 UTCJun 11, 20:05 UTC20m
2026-06-11 N704BH - Jun 11, 18:45 UTCJun 11, 19:10 UTC25m
2026-06-11 N704BH - Jun 11, 17:55 UTCJun 11, 18:10 UTC15m
2026-06-11 N704BH - Jun 11, 17:10 UTCJun 11, 17:20 UTC10m
2026-06-08 N704BH - Jun 8, 18:45 UTCJun 8, 19:50 UTC1h 5m
2026-06-08 N704BH - Jun 8, 17:40 UTCJun 8, 18:10 UTC30m
2026-06-08 N704BH - Jun 8, 15:04 UTCJun 8, 15:20 UTC15m
2026-06-07 N704BH - Jun 7, 22:40 UTCJun 7, 23:30 UTC50m
2026-06-07 N704BH - Jun 7, 20:40 UTCJun 7, 21:00 UTC20m
2026-06-07 N704BH - Jun 7, 18:40 UTCJun 7, 19:00 UTC20m
2026-06-07 N704BH - Jun 7, 17:35 UTCJun 7, 17:50 UTC15m
2026-06-07 N704BH - Jun 7, 00:10 UTCJun 7, 01:04 UTC55m
2026-06-06 N704BH - Jun 6, 20:14 UTCJun 6, 20:45 UTC30m
2026-06-06 N704BH - Jun 6, 19:30 UTCJun 6, 19:40 UTC10m
2026-06-05 N704BH - Jun 5, 18:45 UTCJun 5, 20:10 UTC1h 25m

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 N704BH page for operator, model, and routing details .

Mode-S A9638B frequently asked

What is Mode-S code A9638B?
A9638B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N704BH.
Where is Mode-S A9638B registered?
Mode-S code A9638B 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 A9638B broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9638B, octal 52261613, decimal 11,101,067.
What flights does A9638B operate?
Mode-S A9638B has broadcast 1 distinct callsign, including N704BH.