sensors Mode-S transponder

A564AB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N447AN · AIRBUS A-321neo · operated by AMERICAN AIRLINES INC

Hex
A564AB
Octal
51262253
Decimal
10,839,211
Country
US
Tail
N447AN
Type
A21N
No current signal · last broadcast 19h ago
Flights observed
15
Distinct callsigns
6
Country
US
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S A564AB.

Country allocation

The ICAO 24-bit address A564AB 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 6 distinct

Callsign Airline Flights Last seen
AAL1558 - 5 2026-04-13
AAL385 American Airlines 3 2026-04-13
AAL918 - 2 2026-04-14
AAL2853 American Airlines 2 2026-04-13
AAL1307 - 2 2026-04-13
AAL315 - 1 2026-04-12

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 AAL918 - Apr 14, 08:10 UTCApr 14, 08:40 UTC30m
2026-04-14 AAL918 - Apr 14, 06:45 UTCApr 14, 07:05 UTC20m
2026-04-13 AAL1307 - Apr 13, 20:10 UTCApr 13, 21:45 UTC1h 35m
2026-04-13 AAL1307 - Apr 13, 20:08 UTCApr 14, 01:23 UTC5h 15m
2026-04-13 AAL1558 - Apr 13, 16:25 UTCApr 13, 16:55 UTC30m
2026-04-13 AAL1558 - Apr 13, 12:20 UTCApr 13, 15:30 UTC3h 10m
2026-04-13 AAL1558 - Apr 13, 11:57 UTCApr 13, 17:22 UTC5h 25m
2026-04-13 AAL1558 - Apr 13, 11:34 UTCApr 13, 16:58 UTC5h 24m
2026-04-13 AAL1558 - Apr 13, 11:34 UTCApr 13, 16:54 UTC5h 20m
2026-04-13 AAL385 BOS → DFW Apr 13, 08:35 UTCApr 13, 09:15 UTC40m
2026-04-13 AAL385 BOS → DFW Apr 13, 03:57 UTCApr 13, 09:04 UTC5h 7m
2026-04-13 AAL385 BOS → DFW Apr 13, 04:25 UTCApr 13, 06:05 UTC1h 40m
2026-04-13 AAL2853 DFW → ELP Apr 13, 01:20 UTCApr 13, 01:50 UTC30m
2026-04-12 AAL2853 DFW → ELP Apr 12, 19:55 UTCApr 12, 20:10 UTC15m
2026-04-12 AAL315 - Apr 12, 17:15 UTCApr 12, 17:55 UTC40m

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 N447AN page for operator, model, and routing details .

Mode-S A564AB frequently asked

What is Mode-S code A564AB?
A564AB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N447AN.
Where is Mode-S A564AB registered?
Mode-S code A564AB 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 A564AB broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A564AB, octal 51262253, decimal 10,839,211.
What flights does A564AB operate?
Mode-S A564AB has broadcast 6 distinct callsigns, including AAL1558, AAL385, AAL918, AAL2853, AAL1307.