Aviation Technical English for aircraft maintenance engineers (Авиационный технический английский язык для студентов-авитехников)

136 failures, irregularities/discrepancies in visible structure, systems and powerplant installations or assemblies. This visual check includes all electrical wiring, hydraulic tubing, pneumatic ducting, components and fittings, brackets, etc., associated with systems as well as all visible structure which is contained in the zone. The inspection tasks do not provide a summation of all items to be inspected within each zone. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight or droplight and may require removal or opening of access panels, doors and/or use of standard mirror. Stands, ladders or platforms may be required to gain proximity to the area being checked. GVCE: General Visual Check External (structures only). The general visual check external consists of a visual structural inspection of described items using workstands to gain proximity but without detaching any parts. GVCI: General Visual Check Internal (structures only). The general visual check Internal consists of a visual structural inspection of described internal items through described access doors as far as visible without detaching any additional parts. HFEC: High Frequency Eddy Current Inspection . See NDT manual D6-37239 part 6. LFEC: Low Frequency Eddy Current Inspection . See NDT manual D6-37239 part 6. LUB: Lubrication. Any act of lubricating or servicing an item for the purpose of maintaining its inherent design operating capabilities. OPC: Operational Check . A check to determine that a system or component is operating in a normal and intended manner. Note: Some examples of the use of an operation check are: to determine freedom of movement in a control system, abnormal noise or vibration in engines, accessories, pumps, turbines, actuators or motors. Appropriate instructions in the maintenance manual shall be followed. It does not require specified tolerances.