It depends on what your relation is to your “loved one.”
If you are an immediate family member, such as a spouse or child, you may bring a wrongful death lawsuit.
Likewise, if you are the parent of the deceased victim, you may have standing to bring a lawsuit. If the “loved one” is your close friend or a distant family member, you may not have standing under Texas law to bring a lawsuit.
As for the “homebuilt aircraft”; yes, those are treated as product cases, assuming they were put together correctly and depending on the facts and negligence there potentially could be a case.