Hey Gang: I am no expert, but I do know that if your A & P is comfortable with the regulations, it is legal for you to provide the part (or description of how to make it) for him/her to put in/on your airplane. (this was also described by Dr Ed.) The TCDS A-718 describes the following for equipment, but does not list the equipment provided with the airplane.
Equipment A plus (+) or minus (-) sign preceding the weight of an item indicates net weight change when that item is installed. Approval for the installation of all items of equipment listed herein has been obtained by the aircraft manufacturer except those items preceded by an asterisk (*). This symbol denotes that approval has been obtained by someone other than the aircraft manufacturer. An item marked with an asterisk may not have been manufactured under an FAA monitored or approved quality control system, and therefore conformity must be determined if the item is not identified by a Form FAA-186 or 8130-3 Airworthiness Approval Tag, TSO, PMA or other evidence of FAA production approval. I have replaced the gyros, turn/bank, vacuum gauge and all plumbing with a Tru Trak ADI, after removing the venturi's) on a 415-G and sent the 337 to Oklahoma City so everything is properly recorded. The airplane gained over 10 pounds of useful load in the process and I believe it flew better afterwards. I know it glided much better without those two venturi's hanging on the side, and it was a joy to fly with the Lorance 1000 Velcro ed to the panel in place of the gyro's. Unfortunately, I cannot remember the N number, I sold the airplane to a man in Texas, and my computer which had all the information bombed late last summer. So I do not have any pictures, etc. Lynn Nelsen
