Garmin GIA 63 Installation Manual

Also see for GIA 63: Installation manual Installation manual Installation manual

GIA 63 Installation Manual 190-00303-05Page 2-6 Rev. Y2.2 Installation ConsiderationsThe GIA 63(X) interfaces with the G1000 system and with various avionics equipment. Fabrication of awiring harness is required. Sound mechanical and electrical methods and practices are required forinstallation of the GIA 63(X).2.2.1 Antenna ConsiderationsAntenna installations on pressurized cabin aircraft require FAA approved installation design andengineering substantiation data whenever such antenna installations incorporate alteration (penetration) ofthe cabin pressure vessel by connector holes and/or mounting arrangements. For needed engineeringsupport pertaining to the design and approval of such pressurized aircraft antenna installations, it isrecommended that the installer proceed according to any of the following listed alternatives:1. Obtain approved antenna installation design data from the aircraft manufacturer.2. Obtain an FAA approved STC, pertaining to, and valid for the antenna installation.3. Contact the FAA Aircraft Certification Office in the appropriate Region and request identificationof FAA Designated Engineering Representatives (DERs) who are authorized to prepare andapprove the required antenna installation engineering data.4. Locate an appropriate consultant FAA DER by reviewing the “FAA Consultant DER Directory”,which can be found at the FAA “Designee and Delegation” web page.5. Contact an aviation industry organization such as the Aircraft Electronics Association forassistance.2.2.2 GPS Antenna LocationThe GPS antenna is a key element in the overall system performance and integrity for a GPS/WAASnavigation system. The mounting location, geometry, and surroundings of the antenna can affect thesystem performance and/or availability. The following guidance provides information to aid the installer inensuring that the most optimum location is selected for the installation of the GPS antenna. The installationguidelines presented here meet the intent of AC 20-138A section 16. The greater the variance from theseguidelines, the greater the chance of decreased availability. Approach procedures with vertical guidanceare the most sensitive to these effects. LNAV only approaches, terminal operations, and enroute operationsmay also be affected. Because meeting all of these installations guidelines may not be possible on allaircraft, these guidelines are listed in order of importance to achieve optimum performance. Items 4 beloware of equal importance and their significance may depend on the aircraft installation. The installer shoulduse their best judgment to balance the installation guidelines.