Installation Instructions

GTN 6XX/7XX AML STC Installation Manual 190-01007-A3

Page 2-6 Rev. 4

2.3.2.3 Materials Required but Not Supplied for Optional GMA 35 Installations

• Mounting Screws for the GMA 35 (6 minimum – MS24693 Screw, Machine, Flat Countersunk

Head 100°, Cross Recessed with .1380-32 UNC-2A Thread, corrosion resistant steel)

• Marker Beacon Antenna approved to TSO-C35( )

• Stereo headphone jacks (up to 6), microphone jacks (up to 6), 3.5mm stereo jacks (up to 2), and

insulating washers for all.

2.3.2.4 Materials Required for Lightning Protection (Nonmetallic Aircraft Only)

If additional lightning protection is required for a particular aircraft, the following items may also be

required for the installation. Refer to Appendix G for detailed information regarding which parts are

required for a particular aircraft model.

Applicable to certain nonmetallic aircraft (Except VFR only aircraft). Refer to Appendix G.

• Transient Voltage Suppressor 30KPA48A

Transient Voltage Suppressor 15KPA48A

Referred to as TVS1 in the interconnect drawings in Appendix E

• Fuse, 3AG Fast-Acting, 4A Littelfuse P/N 0312-004

Referred to as F1 in Figure E-4

• Fuse Holder, Inline, Cooper Bussmann P/N HFB

Referred to as F1 in Figure E-4

• Four same P/N TVSs (identified as TVS1 above) are combined in accordance with

Section 3.6.5.1.1 to make an assembly referred to TVS2 in Appendix E.

• Connector, 4-Pin Plug (socket housing) and Cap (pin housing),

Tyco Electronics P/Ns 1-480424-0 and 1-480426-0 respectively

Referred to as 4 Pin Connector in Section 3.6.5.1.1 and Appendix E.

Sockets, Qty. 4, Tyco Electronics P/N 60617-1 or 60619-1 (Section 3.6.5.1.1)

• Pins, Qty. 4, Tyco Electronics, P/N 60618-1 or 60620-1 (Section 3.6.5.1.1)

• Tinned Copper Braid, 1/4” nominal flat width, 32 Amp current carrying capacity. Aircraft Spruce

P/N 863. (For GPS/WAAS antenna cable overbraid)

• Electrical Tie-Down connector, MS3367-1-X (Section 3.3.1.1)

• Aluminum foil tape, 3M P/N 438 (Section 2.4.4.4)

2.3.2.5 Materials Required for Instrument Panel Bonding

If the instrument panel is electrically isolated from the aircraft structure, additional bonding may also be

required for the installation. Refer to Section 3.6.8 for the installation procedure of the instrument panel

bonding strap. The following items are required but not supplied:

• Tinned copper flat braid, 3/4”, QQB575F36T0781 (recommended)

OR Tinned copper tubular braid, 7/16”, QQB575R30T0437

• Terminal lug, 5/16-inch, uninsulated, MS20659-131

• Bolt, AN5-XA

• Locking nut, 5/16-inch

• Washer, NASM970-516 (AN970-516)