sensors Mode-S transponder

A765EC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N576NN · BOMBARDIER Regional Jet CRJ-900 · operated by AMERICAN AIRLINES INC

Hex
A765EC
Octal
51662754
Decimal
10,970,604
Country
US
Tail
N576NN
Type
CRJ9
No current signal · last broadcast 12h ago
Flights observed
12
Distinct callsigns
9
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S A765EC.

Country allocation

The ICAO 24-bit address A765EC 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 9 distinct

Callsign Airline Flights Last seen
JIA5639 - 3 2026-04-13
JIA5559 - 2 2026-04-13
JIA5479 - 1 2026-04-13
JIA5343 - 1 2026-04-13
JIA5279 - 1 2026-04-13
JIA5244 - 1 2026-04-13
JIA5188 - 1 2026-04-12
JIA5156 - 1 2026-04-13
JIA5034 PSA Airlines 1 2026-04-14

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 JIA5034 BTV → PHL Apr 14, 10:20 UTCApr 14, 11:05 UTC45m
2026-04-13 JIA5156 - Apr 13, 22:26 UTCApr 13, 23:44 UTC1h 18m
2026-04-13 JIA5639 - Apr 13, 19:50 UTCApr 13, 21:00 UTC1h 10m
2026-04-13 JIA5639 - Apr 13, 19:05 UTCApr 13, 20:10 UTC1h 5m
2026-04-13 JIA5639 - Apr 13, 16:30 UTCApr 13, 18:15 UTC1h 45m
2026-04-13 JIA5279 - Apr 13, 14:27 UTCApr 13, 15:27 UTC1h 0m
2026-04-13 JIA5343 - Apr 13, 12:29 UTCApr 13, 13:22 UTC53m
2026-04-13 JIA5479 ALB → DCA Apr 13, 09:25 UTCApr 13, 10:25 UTC1h 0m
2026-04-13 JIA5559 - Apr 13, 03:55 UTCApr 13, 04:15 UTC20m
2026-04-13 JIA5559 - Apr 13, 03:02 UTCApr 13, 04:12 UTC1h 10m
2026-04-13 JIA5244 - Apr 13, 01:21 UTCApr 13, 01:52 UTC31m
2026-04-12 JIA5188 - Apr 12, 17:20 UTCApr 12, 18:45 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 N576NN page for operator, model, and routing details .

Mode-S A765EC frequently asked

What is Mode-S code A765EC?
A765EC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N576NN.
Where is Mode-S A765EC registered?
Mode-S code A765EC 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 A765EC broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A765EC, octal 51662754, decimal 10,970,604.
What flights does A765EC operate?
Mode-S A765EC has broadcast 9 distinct callsigns, including JIA5639, JIA5559, JIA5479, JIA5343, JIA5279.