sensors Mode-S transponder

A79046

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N587DT · AIRBUS A-321neo · operated by DELTA AIR LINES INC

Hex
A79046
Octal
51710106
Decimal
10,981,446
Country
US
Tail
N587DT
Type
A21N
Transponder active on ground
Flights observed
15
Distinct callsigns
5
Country
US
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S A79046.

Country allocation

The ICAO 24-bit address A79046 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
DAL1422 Delta Air Lines 6 2026-04-13
DAL697 - 3 2026-04-13
DAL1685 Delta Air Lines 3 2026-04-13
DAL430 - 2 2026-04-14
DAL1431 - 1 2026-04-12

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 DAL430 - Apr 14, 09:10 UTCApr 14, 10:05 UTC55m
2026-04-14 DAL430 - Apr 14, 07:20 UTCApr 14, 09:05 UTC1h 45m
2026-04-13 DAL1685 ATL → LGA Apr 13, 19:50 UTCApr 13, 22:00 UTC2h 10m
2026-04-13 DAL1685 ATL → LGA Apr 13, 19:40 UTCApr 13, 19:45 UTC5m
2026-04-13 DAL1685 ATL → LGA Apr 13, 19:37 UTCApr 13, 21:51 UTC2h 14m
2026-04-13 DAL1422 JFK → FLL Apr 13, 16:15 UTCApr 13, 17:50 UTC1h 35m
2026-04-13 DAL1422 JFK → FLL Apr 13, 15:50 UTCApr 13, 17:50 UTC2h 0m
2026-04-13 DAL1422 JFK → FLL Apr 13, 15:25 UTCApr 13, 16:15 UTC50m
2026-04-13 DAL1422 JFK → FLL Apr 13, 12:20 UTCApr 13, 13:40 UTC1h 20m
2026-04-13 DAL1422 JFK → FLL Apr 13, 11:55 UTCApr 13, 13:40 UTC1h 45m
2026-04-13 DAL1422 JFK → FLL Apr 13, 11:10 UTCApr 13, 12:15 UTC1h 5m
2026-04-13 DAL697 JFK → JFK Apr 13, 04:20 UTCApr 13, 04:25 UTC5m
2026-04-13 DAL697 - Apr 13, 03:55 UTCApr 13, 04:25 UTC30m
2026-04-13 DAL697 - Apr 13, 00:35 UTCApr 13, 04:17 UTC3h 42m
2026-04-12 DAL1431 SLC → PHX Apr 12, 18:00 UTCApr 12, 19:20 UTC1h 20m

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 N587DT page for operator, model, and routing details .

Mode-S A79046 frequently asked

What is Mode-S code A79046?
A79046 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N587DT.
Where is Mode-S A79046 registered?
Mode-S code A79046 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 A79046 broadcasting right now?
Mode-S A79046 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A79046, octal 51710106, decimal 10,981,446.
What flights does A79046 operate?
Mode-S A79046 has broadcast 5 distinct callsigns, including DAL1422, DAL697, DAL1685, DAL430, DAL1431.