Garmin GTX 327 Installation Manual

Also see for GTX 327: Pilot's guide Pilot's guide Installation manual Pilot's guide Pilot's guide

Page 4 GTX 327 Installation ManualRev J 190-00187-021.7 ADDITIONAL EQUIPMENT REQUIRED• Antenna Sealant - Use antenna manufacturer’s instructions, install according to FAAAC 43.13-1B and AC 43.13-2A.• Cables - The installer will supply all system cables. Cable requirements and fabrication isdetailed in Section 2 of this manual.• Hardware - #6-32 x 100° Flat Head Screw (6 ea.) and #6-32 Self-Locking Nut (6 ea.). Hardwarerequired to mount installation rack is not provided.• Encoding Altitude Digitizer - Use encoding altimeter manufacturer’s instructions, installaccording to FAA AC 43.13-1B and AC 43.13-2A. The Garmin GAE 43 (Garmin P/N013-00066-00) can provide altitude data in either serial or parallel gray code format.1.8 INSTALLATION APPROVALThe conditions and tests required for TSO approval of the GTX 327 Transponder and antenna areminimum performance standards. It is the responsibility of those desiring to install this transponder andantenna either on or within a specific type or class of aircraft to determine that the aircraft installationstandards are within the TSO standards. For GTX 327 TSO compliance, see Appendix A. For antennaTSO compliance, refer to antenna manufacturer’s literature.1.9 ATC TRANSPONDER TESTS AND INSPECTIONSThe ATC transponder tests required by 14 CFR, Part 91.413 may be conducted using a bench check orportable test equipment and must meet the requirements prescribed in Part 43 Appendix F.If portable test equipment with appropriate coupling to the aircraft antenna system is used, operate the testequipment for ATCRBS transponders at a nominal rate of 235 interrogations per second to avoid possibleATCRBS interference. An additional 3 dB loss is allowed to compensate for antenna coupling errorsduring receiver sensitivity measurements conducted in accordance with Part 43 Appendix F, Paragraph(c)(1) when using portable test equipment.