7.18 Flashcards
Whats the overall design life limit of the aircraft based on ?
Total flight cycles.
Is the time intervals for the inspection periods on different aircraft the same ?
No. They vary from aircraft and the types of operation to which they are subjected to.
Whats the two methods of determining when an aircraft needs to be inspected ?
flight hours
Inspection calendar
How can scheduled replacement of components with hourly operating limitations be accomplished ?
Durning calendar inspection.
What does the term damage refer to ?
Cross sectional area or permanent distortion of a structural member.
What can abrasion result in ?
Scuffing
Rubbing
Scraping
Whats the definition of a crease ?
Area which is depressed or folded back with sharpe edges.
Does a dent change the cross sectional area of a material ?
No
( width of dent is the second longest distance across the dent and measured at 90 degrees )
If an allowable damage section doesn’t give limits for disbonds, what other limit should you use ?
Delamination limit
Is there a cross sectional area change in a gouge ?
Yes.
Can a hole e repaired ?
Yes, only if it’s in allowable limits.
Whats the definition of a nick ?
Local gouge.
Is there a cross sectional area change in a scratch ?
Yes.
What’s the 3 classifications of damage ?
Allowable damage
Non - allowable damage
Non - repairable damage.
Whats 4 defects found by a non-destructive inspection method (NDI) ?
Pitting
Corrosion
Heat stress
Discontinuity
