51-5BBA-1, Mk 7 Mod 2, and 51-5BCA-1, Mk 7 Mod 3 Aircraft Recovery Equipment Technical Manuals. SAFETY IN MAINTENANCE Any engine not operable or shutdown because of malfunction, breakdown, needed adjustment, or repair should have the deck pendant removed and all operating pressures relieved. Leaks indicate poor fittings or bad packing and result in pressure losses and probable malfunction. Every leak must be immediately investigated to determine the cause and the corrective action to be taken. Cleanliness concerning debris, waste wiping materials, and tools must be very strictly adhered to, particularly where involvement with operable parts may occur. A jammed up engine as a result of carelessness with work materials could result in injury and/or loss of life. Lubrication tables for all equipment must be strictly adhered to. Venting the various lines to remove entrapped air, foam, or waste fluids is a preoperational and operational requirement. Safe operations depend upon strict adherence to these and all other pertinent safety instructions. Molten Metal and Heating Methods A detailed description of heating and using molten metal for pouring sockets is contained earlier in this chapter.   Particular attention should be given to the warning notes and instructions regarding personnel safety. All personnel involved in terminal pouring operations or in any operations where molten metals are involved should wear goggles, gloves, aprons, and such other protective clothing as is necessary. Ample ventilation must be provided against fumes given off by molten metals. Cables, Pendants, and Taut Lines In running pendants, cables, or taut lines, personnel should be familiar with procedures so that equipment is placed without kinking, twisting, or unnatural positioning. Improper handling of cables will cause strand breakage and subsequent weakening and failure. Whenever deck tractors are used for pulling out pendants, all personnel must be on guard for cable lash. Improper Landings Personnel at deckedge stations or on deck duty must be alert during landing operations to stay clear of any aircraft and particularly those making offcenter or excessive-speed landings. Either type can lead to pendant failures, unequal stanchion loadings in the event of barricade landings, and the possibility that such aircraft will go over the deck edge. Safety Checklist The following safety checklist should be posted at applicable locations: Replace broken, worn, or kinked deck pendants and barricade deck cables as soon as operations permit. Inspect deck pendants after each group of landings and after each excessive-load landing, such as extreme offcenter landings or extreme runout to two-blocking. Lubricate deck pendants and barricade cables properly and frequently. Replace broken wire supports. Raise the barricade webbing to the proper height. Replace loose or damaged cable fittings and couplings. Do not allow terminal jamming of deck sheave housing. Remove debris and dirt from all areas. Remove the deck pendants from engines that are inactive. Keep stanchion area clear of personnel when raising and lowering cables and webbing assemblies. Do not reuse the barricade webbing system after an arrestment. Hookrunners should approach all arrested aircraft from the front to avoid jet blast and possible broken cable backlash. 3-67