What type of aircraft is N331DU?

N331DU is a Airbus A220-300 (BCS3).

Delta Air Lines, going by the callsign it flew under when it was caught.

What is the ICAO 24-bit address of N331DU?

A399E4. The Mode S address is assigned to the airframe by its country of registration and stays the same from flight to flight.

On 2026-11-11. Our receivers have heard it on 58 days since 2026-09-12.

Delta Air Lines Airbus A220-300 N331DU broadcasts on ICAO24 A399E4. It was built by Airbus. One pilot has caught this exact tail in Skydex.

N331DU picked up by 7 Skydex receivers (near Philadelphia, North Carolina, Pennsylvania), 58 sightings since 12 Sep 2026, last on 11 Nov 2026.

home — 🇺🇸 United States of America · near Philadelphia · run by @callmerafiki — 1 airframe, 27 sightings, last 2026-11-07
Asheville NC — 🇺🇸 United States of America · North Carolina · run by @parker-redding — 1 airframe, 16 sightings, last 2026-11-07
Docking-Bay-94 — 🇺🇸 United States of America · Pennsylvania · run by @pfshady — 1 airframe, 15 sightings, last 2026-11-07
BakerC - FiberflyTower — 🇺🇸 United States of America · Georgia · run by @ebc1613 — 1 airframe, 13 sightings, last 2026-11-03
DogeRam1500 — 🇺🇸 United States of America · New Jersey · run by @john-napoli — 1 airframe, 13 sightings, last 2026-11-07
Dexter — 🇺🇸 United States of America · Ohio · run by @nightlonk — 1 airframe, 12 sightings, last 2026-11-07
sdf-feed68 — 🇺🇸 United States of America · Kentucky · run by @sdf-feed68 — 1 airframe, 9 sightings, last 2026-11-05