sensors Mode-S transponder

A58FDF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N458AL · AIRBUS A-321neo · operated by AMERICAN AIRLINES INC

Hex
A58FDF
Octal
51307737
Decimal
10,850,271
Country
US
Tail
N458AL
Type
A21N
Broadcasting now · callsign AAL340 · 35,000 ft
Flights observed
10
Distinct callsigns
4
Country
US
Last broadcast
22h ago

Current position

A58FDF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A58FDF 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 4 distinct

Callsign Airline Flights Last seen
AAL3279 American Airlines 4 2026-04-13
AAL693 - 3 2026-04-13
AAL1218 - 2 2026-04-12
AAL694 American Airlines 1 2026-04-14

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 AAL694 CMH → PHL Apr 14, 08:35 UTCApr 14, 08:50 UTC15m
2026-04-13 AAL693 - Apr 13, 19:50 UTCApr 13, 20:20 UTC30m
2026-04-13 AAL693 - Apr 13, 18:36 UTCApr 14, 00:47 UTC6h 11m
2026-04-13 AAL693 - Apr 13, 18:27 UTCApr 14, 01:10 UTC6h 43m
2026-04-13 AAL3279 LGA → CLT Apr 13, 15:50 UTCApr 13, 16:05 UTC15m
2026-04-13 AAL3279 LGA → CLT Apr 13, 12:20 UTCApr 13, 16:05 UTC3h 45m
2026-04-13 AAL3279 LGA → CLT Apr 13, 11:55 UTCApr 13, 15:50 UTC3h 55m
2026-04-13 AAL3279 LGA → CLT Apr 13, 11:25 UTCApr 13, 12:15 UTC50m
2026-04-12 AAL1218 - Apr 12, 23:55 UTCApr 13, 00:15 UTC20m
2026-04-12 AAL1218 - Apr 12, 17:15 UTCApr 12, 18:45 UTC1h 30m

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 N458AL page for operator, model, and routing details .

Mode-S A58FDF frequently asked

What is Mode-S code A58FDF?
A58FDF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N458AL.
Where is Mode-S A58FDF registered?
Mode-S code A58FDF 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 A58FDF broadcasting right now?
Yes. Mode-S A58FDF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A58FDF, octal 51307737, decimal 10,850,271.
What flights does A58FDF operate?
Mode-S A58FDF has broadcast 4 distinct callsigns, including AAL3279, AAL693, AAL1218, AAL694.