What types of aircrafts must undergo a 100-hour inspection in addition to annual inspections?
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4) Mechanical failures of a certain type of aircraft are governed by a Poisson process. Based on past records, an aircraft has a failure once every 6000 hours of flight time. If aircraft are scheduled for inspection and maintenance after every 3000 flight hours, what is the probability that an aircraft will fail between inspections? 5) Referring to the aircraft problem: In a fleet of twelve of these aircraft, what is the probability that not more than two aircraft will have mechanical failures within the 3000-hour interval? (Assume the failures between aircraft are statistically independent.) 6) Referring to the aircraft problem, you are an engineer in charge of aircraft safety. You want to ensure that the probability of failure between inspections is no more than 1% for each aircraft. How would you revise the inspection and maintenance schedule to ensure this level of safety? Please respond on paper only. Your response should be as specific as possible.
Adi S.
A small executive jet cruises at $220 \mathrm{~m} / \mathrm{s}$ EAS and has an average block journey distance of $1,200 \mathrm{~km}$. The most critical portion of the aircraft's structure is the undersurface of the wing, which has a fatigue limit stress of $\pm 200 \mathrm{~N} / \mathrm{mm}^2$ based on a mean stress of $90 \mathrm{~N} / \mathrm{mm}^2$. If the ground-airground cycle and other minor loads produce 8 percent of the total damage, estimate the number of hours of the life of the aircraft. Take $k_1=3.0$ and $l_{10}=6000 \mathrm{~m}$.
What should be done? An aircraft has been operating in a saltwater environment, and several landings have caused the brakes to become very hot upon landing. During your inspection of the wheel well and landing gear, what areas and items do you need to pay particular attention to during the inspection process? While inspecting an aircraft, you find the control cables have external corrosion. What should be accomplished? During an inspection, a component is classified to have negligible corrosion damage. What should be done to this component?
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