sensors Mode-S transponder

A5CC4C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N473AN · AIRBUS A-321neo · operated by AMERICAN AIRLINES INC

Hex
A5CC4C
Octal
51346114
Decimal
10,865,740
Country
US
Tail
N473AN
Type
A21N
Broadcasting now · callsign AAL1135 · 35,000 ft
Flights observed
11
Distinct callsigns
6
Country
US
Last broadcast
12h ago

Current position

A5CC4C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A5CC4C 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
AAL1471 - 3 2026-04-13
AAL767 - 2 2026-04-12
AAL2009 American Airlines 2 2026-04-13
AAL1057 - 2 2026-04-13
AAL2315 American Airlines 1 2026-04-14
AAL1571 - 1 2026-04-13

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 AAL2315 BOS → PHX Apr 14, 10:50 UTCApr 14, 11:05 UTC15m
2026-04-13 AAL1057 - Apr 13, 19:50 UTCApr 13, 22:45 UTC2h 55m
2026-04-13 AAL1057 - Apr 13, 17:10 UTCApr 13, 20:10 UTC3h 0m
2026-04-13 AAL1571 - Apr 13, 12:50 UTCApr 13, 15:40 UTC2h 50m
2026-04-13 AAL1471 - Apr 13, 08:20 UTCApr 13, 11:00 UTC2h 40m
2026-04-13 AAL1471 - Apr 13, 07:55 UTCApr 13, 11:00 UTC3h 5m
2026-04-13 AAL1471 - Apr 13, 05:45 UTCApr 13, 08:15 UTC2h 30m
2026-04-13 AAL2009 SFO → PHL Apr 13, 03:55 UTCApr 13, 04:15 UTC20m
2026-04-13 AAL2009 SFO → PHL Apr 13, 00:30 UTCApr 13, 04:15 UTC3h 45m
2026-04-12 AAL767 - Apr 12, 19:10 UTCApr 12, 22:42 UTC3h 32m
2026-04-12 AAL767 - Apr 12, 17:15 UTCApr 12, 17:25 UTC10m

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 N473AN page for operator, model, and routing details .

Mode-S A5CC4C frequently asked

What is Mode-S code A5CC4C?
A5CC4C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N473AN.
Where is Mode-S A5CC4C registered?
Mode-S code A5CC4C 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 A5CC4C broadcasting right now?
Yes. Mode-S A5CC4C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5CC4C, octal 51346114, decimal 10,865,740.
What flights does A5CC4C operate?
Mode-S A5CC4C has broadcast 6 distinct callsigns, including AAL1471, AAL767, AAL2009, AAL1057, AAL2315.