What this record means
The record shows that the mark SEA was registered on the Principal Register to Southeast Aerospace, Inc., a Florida corporation, but the registration was cancelled on February 13, 2015 because the owner failed to file an acceptable Section 8 declaration, so the mark is now dead. The only goods listed are “avionics installation and repair” in International Class 037, with a first use date of October 1, 2003 and a use‑in‑commerce date of November 1, 2003; a similar name used for aerospace‑related services would be the closest area of concern. The record does not give the owner control over every possible use of the word “SEA,” only over the specific services described. The latest meaningful event is the Section 8 cancellation in 2015, and no opposition, cancellation proceeding, or other enforcement action appears in the history. I'd treat this as a meaningful concern if you plan a name in the same avionics repair space.
Informational only - not legal advice.