ASQ
CRE · Question #43
An airline maintains a fleet of 4-engine aircraft. Its maintenance records show that on the average an engine fails 3 times in 10,000 operating hours with normal preventive maintenance. What is the…
The correct answer is C. 0.0000029. See the full explanation below for the reasoning.
System Reliability
Question
An airline maintains a fleet of 4-engine aircraft. Its maintenance records show that on the average an engine fails 3 times in 10,000 operating hours with normal preventive maintenance. What is the Poisson distributed probability that 2 or more engines on an aircraft will fail during a typical flying period of 8 hours?
Options
- A0.000034
- B0.0000034
- C0.0000029
- D0.000029
How the community answered
(19 responses)- A5% (1)
- B11% (2)
- C68% (13)
- D16% (3)
Topics
#Poisson distribution#failure probability#probability calculation#engine reliability
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