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sensors Mode-S transponder

A8AED9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N659HA · BELL 206 JetRanger · operated by HELICOPTER APPLICATORS INC

Hex
A8AED9
Octal
52127331
Decimal
11,054,809
Country
US
Tail
N659HA
Type
B06
No current signal · last broadcast Jul 25, 15:20 UTC
Flights observed
37
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 15:20 UTC

Last known position

Most recent position reported by Mode-S A8AED9.

Country allocation

The ICAO 24-bit address A8AED9 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
N659HA - 36 2026-07-25

Recent flights last 37

DateFlightRouteTakeoffLandingDuration
2026-07-25 N659HA - Jul 25, 11:40 UTCJul 25, 15:20 UTC3h 40m
2026-07-24 N659HA - Jul 24, 21:40 UTCJul 24, 23:10 UTC1h 30m
2026-07-24 N659HA - Jul 24, 14:50 UTCJul 24, 15:20 UTC30m
2026-07-23 N659HA - Jul 23, 10:20 UTCJul 23, 10:30 UTC10m
2026-07-20 N659HA - Jul 20, 21:25 UTCJul 20, 22:00 UTC35m
2026-07-20 N659HA - Jul 20, 09:45 UTCJul 20, 14:10 UTC4h 25m
2026-07-19 N659HA - Jul 19, 12:00 UTCJul 19, 13:25 UTC1h 25m
2026-07-19 - - Jul 19, 10:30 UTCJul 19, 10:40 UTC10m
2026-07-16 N659HA - Jul 16, 11:15 UTCJul 16, 12:00 UTC45m
2026-07-16 N659HA - Jul 16, 10:29 UTCJul 16, 10:45 UTC15m
2026-07-14 N659HA - Jul 14, 13:20 UTCJul 14, 14:40 UTC1h 20m
2026-07-14 N659HA - Jul 14, 09:45 UTCJul 14, 09:55 UTC10m
2026-07-13 N659HA - Jul 13, 22:10 UTCJul 13, 22:20 UTC10m
2026-07-13 N659HA - Jul 13, 14:15 UTCJul 13, 14:25 UTC10m
2026-07-13 N659HA - Jul 13, 10:30 UTCJul 13, 10:40 UTC10m
2026-06-26 N659HA - Jun 26, 14:05 UTCJun 26, 16:39 UTC2h 35m
2026-06-26 N659HA - Jun 26, 13:24 UTCJun 26, 13:34 UTC10m
2026-06-26 N659HA - Jun 26, 12:10 UTCJun 26, 12:50 UTC40m
2026-06-25 N659HA - Jun 25, 19:05 UTCJun 25, 19:29 UTC25m
2026-06-25 N659HA - Jun 25, 17:44 UTCJun 25, 18:34 UTC50m
2026-06-25 N659HA - Jun 25, 16:29 UTCJun 25, 17:05 UTC35m
2026-06-25 N659HA - Jun 25, 12:40 UTCJun 25, 13:00 UTC20m
2026-06-24 N659HA - Jun 24, 22:14 UTCJun 24, 22:55 UTC40m
2026-06-17 N659HA - Jun 17, 20:25 UTCJun 17, 22:00 UTC1h 35m
2026-06-17 N659HA - Jun 17, 19:15 UTCJun 17, 19:55 UTC40m
2026-06-17 N659HA - Jun 17, 16:35 UTCJun 17, 18:10 UTC1h 35m
2026-06-17 N659HA - Jun 17, 11:10 UTCJun 17, 16:00 UTC4h 50m
2026-06-15 N659HA - Jun 15, 18:55 UTCJun 15, 19:05 UTC10m
2026-06-11 N659HA - Jun 11, 15:55 UTCJun 11, 16:05 UTC10m
2026-06-05 N659HA - Jun 5, 11:05 UTCJun 5, 11:35 UTC30m
2026-06-03 N659HA - Jun 3, 21:15 UTCJun 3, 22:45 UTC1h 30m
2026-06-02 N659HA - Jun 2, 21:00 UTCJun 2, 21:20 UTC20m
2026-05-19 N659HA - May 19, 16:00 UTCMay 19, 17:35 UTC1h 35m
2026-05-19 N659HA - May 19, 15:05 UTCMay 19, 15:30 UTC25m
2026-05-19 N659HA - May 19, 13:40 UTCMay 19, 14:30 UTC50m
2026-05-19 N659HA - May 19, 10:55 UTCMay 19, 12:20 UTC1h 25m
2026-04-24 N659HA - Apr 24, 16:25 UTCApr 24, 16:40 UTC15m

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 N659HA page for operator, model, and routing details .

Mode-S A8AED9 frequently asked

What is Mode-S code A8AED9?
A8AED9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N659HA.
Where is Mode-S A8AED9 registered?
Mode-S code A8AED9 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 A8AED9 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 15:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8AED9, octal 52127331, decimal 11,054,809.
What flights does A8AED9 operate?
Mode-S A8AED9 has broadcast 1 distinct callsign, including N659HA.