I recently came across a Hawker with an entertainment system installed (3 displays, cd/dvd player and an audio system that included a 6 place wireless system).  Problem is, the parts are non-aviation approved (more like a Best Buy special).  To make it worse, there is no sign off of any sort in the logbooks, equipment list or w&b.

The aircraft is operated Part 91. 

Can these parts be installed?  Under what FAR?

If Yes, I would assume a conformance inspection and sign off stating such would be required as well as the equipment and w&b.

Thoughts or Recommendations?

Bill

Sounds to me buddy that these are illegally installed. Usually they have to be bought off by inspection, have part numbers generated, and have them incorporated into the aircraft drawings.

I agree about the installation, but how to go about making it right is the next step.

Can you "Install" non-aviation (no PMA or TSO approved) parts?

If so, what FAR does this fall under?

This is the kind of stuff that makes no sense to me.  Cut corners, buy unauthorized parts and no paperwork to follow up.  I can only imagine the installer knew this going in or there would be records of the work done. 

Hello I've come across having to install non aviation electronic equipment into an aircraft and it can be done legally by going through a DER who approves the wire drawings for the equipment on  how it is hooked up to the aircraft systems on a FAA Form 8110. Then an IA includes this information in a FAA Form 337 which he uses to approve the installation. As far as inspecting the installation you can either reference AC 43.13 or Ch 5 Inspections of the aircraft Maintenance Manual plus submitting new weight and balance report for the new equipment , a equipment list update and a electrical load analysis.  Hopes this helps, if the installation is already installed then you might have to trace the wiring system then submitting how it is installed to a DER who would have to approve the installation.  

good advice.  I didn't think about using a DER for approval of this equipment. I have just the guy to ask too.  That is one way to go about it.

I'm quoting the owners for an appoved IFE system.  I'll see how that goes over.  I feel more comfortable getting approved equipment and data rather than reverse-engineering a system knowing little about the equipment and having seen the less than stellar installation practices used. 

By the time we get through a DER, the reverse-engineering/clean up and the paperwork involved we could be talking around $3k.  That assumes the DER buys off on the installed equipment.