Most maintenance personnel have heard of the 18-inch rule and know what it means. For those who don't, the 18-inch rule means that whenever you do Use the right fluid, in the right maintenance or inspect an aircraft, you should not focus on just that task or specific area alone.
The 18-inch applies only to areas that have sprinklers installed. Picture a horizontal plane parallel to the ceiling that is 18 inches below the sprinkler heads. Nothing should be in that area between the bottom of the sprinkler heads and the imaginary horizontal plane parallel to the ceiling that is 18 inches below.
The Federal Aviation Administration (FAA) defines aircraft visual inspections as “the process of using the eye, alone or in conjunction with various aids, as the sensing mechanism from which judgments may be made about the condition of a unit to be inspected.”
GVI is general visual inspection and when you make a GVI, you have to be maximum an arm's length distance to the area and/or component you are searching any defects. DVI is detailed visual inspection, it depends to the situation but usually you use a tool like a magnifier to inspect the area/component.
The FAA divides visual inspections into four different categories according to their degree of effectiveness and difficulty: (1) walkaround inspections, (2) general visual inspection, (3) detailed visual inspection, and (4) special detailed visual inspection.
In quality control, there are 4 types of quality inspections, namely: pre-production inspection, during production inspection, pre-shipment inspection, and container loading/unloading inspections. Each of these types of inspection has its own purpose.
These include digital cameras, borescopes, videoscopes, video and digital microscopes, and closed-circuit surveillance television. Remote visual inspection (RVI) tools like drones and robots allow inspectors to collect visual data without the need to be physically present in the site being evaluated.
The visual inspection is always performed (to whatever degree possible) at the end of a complete cleaning cycle (7). The visual inspection is an active and qualitative observation of product contact surfaces to confirm the absence of residue and the next batch production can start (7).
Types of Inspections. Aircraft inspections have two main categories, unscheduled and scheduled.
During an aircraft's external checks, pilots must be mindful of all facets of safety. Their priority at this stage is visually inspecting the aircraft for any external anomalies that could render it unsafe to fly.
The purpose of a 100-hour inspection is to ensure that the aircraft is safe to fly and that all systems are operating as they should. During this inspection, all major components of the aircraft will be inspected, including the engine, airframe, control surfaces, and electrical system.
Policy: Visual Inspection Standards (VIS) provide relaxations from the surface condition (normally flawless) implied by engineering drawings. Only those relaxations (called imperfections) allowed by this VIS, or the engineering drawing are permitted on parts to which this VIS is assigned.
Visual Inspection (VT)
It allows for a feasible and fast control of quality at every step of the fabrication or maintenance process. Visual Testing (VT) is used to detect visible flaws such as deformation, welding defects and corrosion. Many tools can be used during the inspection such as a ruler, gauges, cameras, etc.
The four types of quality control are process control, control charts, acceptance sampling, and product quality control.
The AQL guideline consists of two sampling levels: the General Sampling Level and Special Sampling Level.
On top of safety regulations, they also require regular inspections to ensure that each aircraft meets the high standards they've put in place. There are three main types of inspections that every maintenance team should know about and prepare for before departure.
Also referred to as 100% Inspection, it is just as it sounds: the process by which producers inspect every single product before it leaves their docks, often at multiple points during production.
An inspection checklist (sometimes called an inspection sheet) is a list of all activities that must be performed during inspection to ensure compliance with regulatory requirements, industry standards, or maintenance requirements.
Visual Testing is the most basic way to examine a material or object without altering it in any way. Visual Testing can be done with the naked eye, by inspectors visually reviewing a material or asset.
There are two methods of inspection. They are 100% inspection and Sampling inspection. This type will involve careful inspection in detail of quality at each strategic point or stage of manufacture where the test involved is non-destructive and every piece is separately inspected.
A safety inspection involves a thorough scrutiny of the workplace to: Identify and record potential health and safety hazards. Review safety equipment (e.g., fire extinguishers, first aid kits, safety shoes, protective gear, etc.) Examine the effectiveness of your workplace safety practices.