sensors Mode-S transponder

A486D8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N391DN · AIRBUS A-321 · operated by BANK OF UTAH TRUSTEE

Hex
A486D8
Octal
51103330
Decimal
10,782,424
Country
US
Tail
N391DN
Type
A321
Broadcasting now · callsign DAL1199 · 11,000 ft
Flights observed
12
Distinct callsigns
6
Country
US
Last broadcast
21h ago

Current position

A486D8 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A486D8 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
DAL764 Delta Air Lines 3 2026-04-14
DAL754 - 3 2026-04-13
DAL700 - 3 2026-04-13
DAL945 - 1 2026-04-12
DAL369 - 1 2026-04-13
DAL2121 - 1 2026-04-12

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 DAL764 MSP → SAT Apr 14, 09:10 UTCApr 14, 09:25 UTC15m
2026-04-14 DAL764 MSP → SAT Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 DAL764 MSP → SAT Apr 14, 06:00 UTCApr 14, 07:10 UTC1h 10m
2026-04-13 DAL369 - Apr 13, 20:49 UTCApr 14, 01:07 UTC4h 18m
2026-04-13 DAL754 - Apr 13, 16:15 UTCApr 13, 17:25 UTC1h 10m
2026-04-13 DAL754 - Apr 13, 15:50 UTCApr 13, 17:25 UTC1h 35m
2026-04-13 DAL754 - Apr 13, 13:45 UTCApr 13, 16:15 UTC2h 30m
2026-04-13 DAL700 - Apr 13, 04:20 UTCApr 13, 05:50 UTC1h 30m
2026-04-13 DAL700 - Apr 13, 03:55 UTCApr 13, 05:50 UTC1h 55m
2026-04-13 DAL700 - Apr 13, 01:15 UTCApr 13, 05:34 UTC4h 19m
2026-04-12 DAL945 - Apr 12, 19:40 UTCApr 12, 20:15 UTC35m
2026-04-12 DAL2121 - Apr 12, 17:15 UTCApr 12, 18:00 UTC45m

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 N391DN page for operator, model, and routing details .

Mode-S A486D8 frequently asked

What is Mode-S code A486D8?
A486D8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N391DN.
Where is Mode-S A486D8 registered?
Mode-S code A486D8 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 A486D8 broadcasting right now?
Yes. Mode-S A486D8 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A486D8, octal 51103330, decimal 10,782,424.
What flights does A486D8 operate?
Mode-S A486D8 has broadcast 6 distinct callsigns, including DAL764, DAL754, DAL700, DAL945, DAL369.