l maintenance checks, and as such must be performed at a suitable maintenance base. Given the requirements of this check and the tremendous effort involved in it, it is also the most expensive maintenance check of all, with total costs for a single visit being well within the million-dollar range. p> Because of the nature and the cost of such a check, most airlines - especially those with a large fleet - have to plan D Checks for their aircraft years in advance. Ofttimes, older aircraft being phased out of a particular airline's fleet are either stored or scrapped upon reaching their next D Check, due to the high costs involved in it in comparison to the aircraft's value. On average, a commercial aircraft undergoes 2-3 D Checks before it is retired. Many Maintenance, Repair and Overhaul <# "justify"> As pilot in command you are responsible to ascertain that the aircraft is an airworthy condition. As such it is required to check all aircraft papers as weight (mass) and balance, aircraft logbooks, licenses and limitations. Part of any flight is a visual inspection of the aircraft. p align="justify">
Visual inspectioninspection is the most basic and common inspection method, and involves getting the inspector to "see" where one normally couldn't . This is done with the use of tools such as fiberscopes, borescopes, magnifying glasses and mirrors. Successful use of the technique requires good lighting and vision for best sensitivity, as well as training & experience which are vital for accurate interpretation of features.
Advantages of Visual Inspection
- Inspection performed rapidly and at low cost
- Ability to inspect complex sizes and shapes of any material
- Minimum part preparation required
Limitations of Visual Inspection
- Surface to be inspected must somehow be accessible to inspector or visual aids
- Surface finish, roughness and cleanliness can interfere with inspection
- Only surface defects are detectable
Visual inspection or walk around is done by the pilot or mechanic as final airworthiness check. In this section we describe were and what to look for when inspecting your aircraft. The walk around is a visual inspection for the general condition of the aircraft and it is intended to make a final check for its airworthiness. Especially important during the winter season, is to remove even small accumulations of frost, ice or snow from the wings, tail and control surfaces.are a number of items that need to be checked on the exterior of the aircraft during the walk around (this order can be slightly different but this one would work for any high wing aircraft like Cessna's, Murphy's or Pelicans):
ТЗ Cabin
ТЗ Empennage (French for the tail section)
ТЗ Right wing trailing edge, wingtip and leading edge
ТЗ Nose and Engine
ТЗ Left wing leading edge, wingtip and trailing edge
In the cabin it is needed to check for a number of items, most importantly are aircraft papers like: POH, Weight (mass) and Balance and insurance. At this point It is also checked the movement of the stick/yoke and listened for any odd sounds and check if elevator/ailerons move in the correct direction without problems. After making sure no one is standing near the propeller/engine switch on the master and check fuel level. While we are in the cabin: we check for any sign of mice or other rodent which may have turned the airplane into their house.leaving the cabin and walk, while looking at the fuselage for anything out of the ordinary (missing antenna's, dents, loose bolts, missing rivets, remove any bird droppings), towards the tail feathers (empennage).
PART 1. INSPECTED DAMAGES
visual inspection of the aircrafts which are present in the hangar of NAU
the result of our inspection of the aircrafts fuselages which are hold in the hangar of our university we have found massive scratches, damages of a skin, holes, absence of rivets , traces of corrosion and other different damages. They are shown in the following pictures:
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On the figures 1...
