Inspect the flight control cables per the New Piper Inspection Program using the appropriate documentation required for each type of aircraft. Pay particular attention to corrosion and “pitting” on cable terminals, turnbuckles and cable fittings. They connect field instruments and control panels in a central way. 148 to ensure that all metallic parts are bonded, providing a low-impedance path for fault current. Failure to correctly ground a box can lead to energized enclosures, posing severe shock and fire risks. By following these. The purpose of this Advisory Circular (AC) is to provide guidance material for maintenance of aircraft electrical systems and bonding of aircraft. The AC highlights the techniques, inspection regimes and maintenance processes required to ensure that aircraft wiring systems continue to function with. Learn what the NEC requires for junction boxes, from box fill calculations and grounding to outdoor use and fire-rated wall installations. The National Electrical Code (NEC), published as NFPA 70, sets minimum safety standards for electrical junction boxes in residential and commercial buildings. When each manual comes up for revision, we are adding in the scheduled maintenance checks notes the following: “For airplanes 15 years or older, using a 10X magnifier, visually inspect the entire surface of each cable terminal, turnbuckle, or other cable fitting for corrosion or cracking. Please contact Aviation Spares & Repairs Limited for more information on the cable inspection test.
