N684DT — Cessna Citation CJ4 aircraft profile

History

Jun 5–7→ Smyrna, TN, with San Jose, Auburn and 1 more stops5 legs15h 02m flying
Jun 4Smyrna, TN → home, with a San Jose stop11h 00m
May 28–Jun 1→ Smyrna, TN, with Prattville, Auburn and 2 more stops8 legs20h 29m flying

That's the last 7 days. The full record — 85 trips, every registry change — is a Jump Seat · $15/month.

Where it goes

Washington, DC	17 trips
Auburn, AL	12 trips
Tuscaloosa, AL — home field	10 trips
Smyrna, TN	8 trips
Destin, FL	4 trips
Birmingham, AL	2 trips

The aircraft

Airframe

Type: Cessna Citation CJ4
Make and model on the certificate: TEXTRON AVIATION INC 525C
Category and class: Fixed wing, multi engine · 2 × turbofan
Serial: 525C0263
Built: 2018
Engines: WILLIAMS FJ44-4A
Seats: 11
Airworthiness: Mar 21, 2018

Identity

Registration: N684DT
Mode-S hex: A91270
Last tracked: Jun 7, 2026

Registration

Registrant: CJ4N684DT LLC
Address of record: TUSCALOOSA, AL
FAA status: Valid
Certificate issued: Sep 22, 2025
Registration expires: Sep 30, 2032
Registry: United States

FAA Registry N684DT, snapshot Nov 8, 2026.

Title history

2025N684DT assigned — first registration
—Registered to CJ4N684DT LLC

Owner history

Years	Registered owner	Where	How it ended
Present	CJ4N684DT LLC	Tuscaloosa, AL	Open — still the registered owner of record

Every filing

Date	Filing
Sep 27, 2026	Part 135 listing — Listed under HARMONY AIR LLC, certificate 1HRA Seen 2026-09-27 through 2026-11-09 across 5 dated FAA workbooks. Still on the current list.

Date

Filing

Sep 27, 2026

Part 135 listing — Listed under HARMONY AIR LLC, certificate 1HRA

Seen 2026-09-27 through 2026-11-09 across 5 dated FAA workbooks. Still on the current list.

Attribution

RegistrantCJ4N684DT LLC · FAA record

Attribution reflects public context; registration records show registrants, not passengers.

Built from JetSweep’s retained FAA registry snapshots, sourced from FAA Registry N684DT (snapshot Nov 8, 2026). Dates shown are FAA recording and snapshot dates — the day a filing was indexed or a difference was first observed, not necessarily the day the underlying transaction happened. Part 135 rows come from dated workbook retrievals and bound a listing, never date it. We track the aircraft, not who is aboard.