PDF Publication Title:
Text from PDF Page: 570
9/8/98 AC 43.13-1B across each hinge. In any case, not less than two 6500 circular mil jumpers should be used on each control surface. The installation loca tion of these jumpers should be carefully cho sen to provide a low-impedance shunt for lightning current across the hinge to the struc ture. When jumpers may be subjected to arc ing, substantially larger wire sizes of 40,000 circular mils or a larger cross section are required to provide protection against mul tiple strikes. Sharp bends and loops in such jumpers can create susceptibility to breakage when subjected to the inductive forces created by lightning current, and should be avoided. b. Control Cable Lightning Protection Bonding. To prevent damage to the control system or injury to flight personnel due to lightning strike, cables and levers coming from each control surface should be protected by one or more bonding jumpers located as close to the control surface as possible. Metal pul leys are considered a satisfactory ground for control cables. 11-194. LIGHTNING PROTECTION FOR ANTENNAS AND AIR DATA PROBES. Antenna and air data probes that are mounted on exterior surfaces within light ning strike zones should be provided with a means to safely transfer lightning currents to the airframe, and to prevent hazardous surges from being conducted into the airframe via antenna cables or wire harnesses. Usually, the antenna mounting bolts provide adequate lightning current paths. Surge protectors built into antennas or installed in coaxial antenna cables or probe wire harnesses will fulfill these requirements. Candidate designs should be verified by simulated lightning tests in accor dance with RTCA DO-160C, Section 23. 11-195. STATIC-DISCHARGE DEVICE. Means should be provided to bleed accumu lated static charges from aircraft prior to ground personnel coming in contact with an aircraft after landing. Normally, there is ade quate conductivity in the tires for this, but if not, a static ground should be applied before personnel come into contact with the aircraft. Fuel nozzle grounding receptacles should be installed in accordance with the manufac turer’s specifications. Grounding receptacles should provide a means to eliminate the static- induced voltage that might otherwise cause a spark between a fuel nozzle and fuel tank ac cess covers and inlets. In addition, static dis charging wicks are installed on wings and tail surfaces to discharge static changes while in flight. 11-196. CLEANING. In order to ensure proper ground connection conductivity, all paint, primer, anodize coating, grease, and other foreign material must be carefully re moved from areas that conduct electricity. On aluminum surfaces, apply chemical surface treatment to the cleaned bare metal surface in accordance with the manufacturer’s instruc tions within 4-8 hours, depending on ambient moisture/contaminate content. 11-197. HARDWARE ASSEMBLY. De tails of bonding connections must be de scribed in maintenance manuals and adhered to carefully when connections are removed or re placed during maintenance operations. In or der to avoid corrosion problems and ensure long-term integrity of the electrical connection, hardware used for this purpose must be as de fined in these documents or at least be equivalent in material and surface. Installation of fasteners used in bonded or grounded con nections should be made in accordance with SAE ARP-1870. Threaded fasteners must be torqued to the level required by SAE ARP-1928. 11-198.11-204. [RESERVED.] Par 11-193 Page 11-81 (and 11-82)PDF Image | AFS-640
PDF Search Title:
AFS-640Original File Name Searched:
ac_43.13-1b_w-chg1.pdfDIY PDF Search: Google It | Yahoo | Bing
5,000 BF Shipping Container Lumber Dry Kiln For Quality Lumber The 5,000 BF container kiln consists of one 40 foot high-cube aluminum shipping container... More Info
Shipping Container Lumber Dry Kilns by Global Energy Global Energy designed and developed the container kiln back in 1991. The purpose is to give access to portable sawmill owners, furniture makers, and small business the value added profit of dry kiln lumber and quality hardwoods... More Info
Vacuum Kiln Conversion Kit for Lumber and Wood Dry Kilns Convert your existing conventional dry kiln into a fast drying vacuum kiln. Similar to vacuum bagging in the boat building and aircraft industry, we have come up with a proprietary process which allows you to build a very simple vacuum kiln at a fraction of the price, and without the intensive conventional metal chamber structure... More Info
Vacuum Pump Cart System for Bagging Clamping Wood Drying and more Vacuum Cart with 2HP Pump and Dual Pistons with multiple multiplex vacuum ports and liquid reservoir... More Info
Vacuum Bagging Basics Vacuum bagging is a method of clamping, which has traditionally been used in the composites industry, but can also be used for vacuum drying materials, including wood products... More Info
CONTACT TEL: 608-238-6001 Email: greg@globalmicroturbine.com (Standard Web Page)