sensors Mode-S transponder

A324CE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N301UC · BOEING 737 MAX 8 · operated by AMERICAN AIRLINES INC

Hex
A324CE
Octal
50622316
Decimal
10,691,790
Country
US
Tail
N301UC
Type
B38M
Broadcasting now · callsign AAL1272 · 35,000 ft
Flights observed
8
Distinct callsigns
5
Country
US
Last broadcast
15h ago

Current position

A324CE is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A324CE 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 5 distinct

Callsign Airline Flights Last seen
AAL1512 American Airlines 3 2026-04-13
AAL3316 - 2 2026-04-13
AAL796 - 1 2026-04-12
AAL604 - 1 2026-04-14
AAL1513 American Airlines 1 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-14 AAL604 - Apr 14, 10:59 UTCApr 14, 13:03 UTC2h 4m
2026-04-13 AAL3316 - Apr 13, 20:50 UTCApr 13, 23:30 UTC2h 40m
2026-04-13 AAL3316 - Apr 13, 16:42 UTCApr 13, 19:17 UTC2h 35m
2026-04-13 AAL1512 GEO → MIA Apr 13, 12:45 UTCApr 13, 14:35 UTC1h 50m
2026-04-13 AAL1512 GEO → MIA Apr 13, 11:55 UTCApr 13, 14:35 UTC2h 40m
2026-04-13 AAL1512 GEO → MIA Apr 13, 10:35 UTCApr 13, 12:05 UTC1h 30m
2026-04-13 AAL1513 MIA → GEO Apr 13, 00:25 UTCApr 13, 01:10 UTC45m
2026-04-12 AAL796 - Apr 12, 19:30 UTCApr 12, 20:00 UTC30m

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 N301UC page for operator, model, and routing details .

Mode-S A324CE frequently asked

What is Mode-S code A324CE?
A324CE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N301UC.
Where is Mode-S A324CE registered?
Mode-S code A324CE 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 A324CE broadcasting right now?
Yes. Mode-S A324CE is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A324CE, octal 50622316, decimal 10,691,790.
What flights does A324CE operate?
Mode-S A324CE has broadcast 5 distinct callsigns, including AAL1512, AAL3316, AAL796, AAL604, AAL1513.