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sensors Mode-S transponder

A65509

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N507ME · AIRBUS HELICOPTERS EC-145 · operated by CENTER FOR EMERGENCY MEDICINE OF WESTERN PA

Hex
A65509
Octal
51452411
Decimal
10,900,745
Country
US
Tail
N507ME
Type
EC45
No current signal · last broadcast 2d ago
Flights observed
195
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A65509.

Country allocation

The ICAO 24-bit address A65509 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
N507ME - 195 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 N507ME - Jul 11, 14:20 UTCJul 11, 14:35 UTC15m
2026-07-10 N507ME - Jul 10, 04:20 UTCJul 10, 04:30 UTC10m
2026-07-10 N507ME - Jul 10, 03:30 UTCJul 10, 03:40 UTC10m
2026-07-09 N507ME - Jul 9, 22:05 UTCJul 9, 22:35 UTC30m
2026-07-09 N507ME - Jul 9, 13:40 UTCJul 9, 13:50 UTC10m
2026-07-09 N507ME - Jul 9, 05:30 UTCJul 9, 05:55 UTC25m
2026-07-09 N507ME - Jul 9, 02:45 UTCJul 9, 02:55 UTC10m
2026-07-08 N507ME - Jul 8, 16:05 UTCJul 8, 16:15 UTC10m
2026-07-08 N507ME - Jul 8, 15:10 UTCJul 8, 15:45 UTC35m
2026-07-08 N507ME - Jul 8, 01:25 UTCJul 8, 01:45 UTC20m
2026-07-08 N507ME - Jul 8, 00:30 UTCJul 8, 01:10 UTC40m
2026-07-06 N507ME - Jul 6, 18:15 UTCJul 6, 18:25 UTC10m
2026-07-04 N507ME - Jul 4, 16:20 UTCJul 4, 16:30 UTC10m
2026-07-04 N507ME - Jul 4, 15:45 UTCJul 4, 15:55 UTC10m
2026-07-04 N507ME - Jul 4, 08:45 UTCJul 4, 08:55 UTC10m
2026-07-04 N507ME - Jul 4, 00:35 UTCJul 4, 00:45 UTC10m
2026-07-04 N507ME - Jul 4, 00:00 UTCJul 4, 00:30 UTC30m
2026-07-03 N507ME - Jul 3, 17:35 UTCJul 3, 17:45 UTC10m
2026-07-03 N507ME - Jul 3, 17:05 UTCJul 3, 17:10 UTC5m
2026-07-02 N507ME - Jul 2, 04:15 UTCJul 2, 05:25 UTC1h 10m
2026-07-01 N507ME - Jul 1, 15:55 UTCJul 1, 17:00 UTC1h 5m
2026-07-01 N507ME - Jul 1, 02:05 UTCJul 1, 02:30 UTC25m
2026-06-30 N507ME - Jun 30, 20:55 UTCJun 30, 21:05 UTC10m
2026-06-30 N507ME - Jun 30, 06:50 UTCJun 30, 07:00 UTC10m
2026-06-30 N507ME - Jun 30, 06:20 UTCJun 30, 06:30 UTC10m
2026-06-30 N507ME - Jun 30, 05:00 UTCJun 30, 05:10 UTC10m
2026-06-30 N507ME - Jun 30, 04:20 UTCJun 30, 04:45 UTC25m
2026-06-30 N507ME - Jun 30, 03:55 UTCJun 30, 04:00 UTC5m
2026-06-29 N507ME - Jun 29, 20:35 UTCJun 29, 21:05 UTC30m
2026-06-29 N507ME - Jun 29, 20:04 UTCJun 29, 20:15 UTC10m
2026-06-29 N507ME - Jun 29, 16:29 UTCJun 29, 17:19 UTC50m
2026-06-29 N507ME - Jun 29, 15:24 UTCJun 29, 15:45 UTC20m
2026-06-29 N507ME - Jun 29, 02:59 UTCJun 29, 03:29 UTC30m
2026-06-29 N507ME - Jun 29, 01:29 UTCJun 29, 01:55 UTC25m
2026-06-27 N507ME - Jun 27, 01:35 UTCJun 27, 01:54 UTC20m
2026-06-26 N507ME - Jun 26, 20:50 UTCJun 26, 21:30 UTC40m
2026-06-26 N507ME - Jun 26, 17:40 UTCJun 26, 17:50 UTC10m
2026-06-26 N507ME - Jun 26, 09:55 UTCJun 26, 10:05 UTC10m
2026-06-26 N507ME - Jun 26, 09:30 UTCJun 26, 09:35 UTC5m
2026-06-26 N507ME - Jun 26, 02:14 UTCJun 26, 02:24 UTC10m
2026-06-25 N507ME - Jun 25, 17:44 UTCJun 25, 18:00 UTC15m
2026-06-25 N507ME - Jun 25, 17:20 UTCJun 25, 17:30 UTC10m
2026-06-25 N507ME - Jun 25, 03:24 UTCJun 25, 03:34 UTC10m
2026-06-25 N507ME - Jun 25, 02:59 UTCJun 25, 03:10 UTC10m
2026-06-25 N507ME - Jun 25, 00:59 UTCJun 25, 01:09 UTC10m
2026-06-24 N507ME - Jun 24, 16:29 UTCJun 24, 16:45 UTC15m
2026-06-24 N507ME - Jun 24, 02:45 UTCJun 24, 03:00 UTC15m
2026-06-24 N507ME - Jun 24, 02:20 UTCJun 24, 02:30 UTC10m
2026-06-23 N507ME - Jun 23, 21:54 UTCJun 23, 22:19 UTC25m
2026-06-23 N507ME - Jun 23, 18:45 UTCJun 23, 19:29 UTC45m

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 N507ME page for operator, model, and routing details .

Mode-S A65509 frequently asked

What is Mode-S code A65509?
A65509 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N507ME.
Where is Mode-S A65509 registered?
Mode-S code A65509 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 A65509 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A65509, octal 51452411, decimal 10,900,745.
What flights does A65509 operate?
Mode-S A65509 has broadcast 1 distinct callsign, including N507ME.