The following data give the times between successive failures of an aircraft air
ID: 2250447 • Letter: T
Question
The following data give the times between successive failures of an aircraft air-conditioning unit: 48,
29, 502, 12, 70, 21, 29, 386, 59, 27, 153, 26 and 326 hours. When a unit fails it is repaired in situ .
Repairs can be assumed to be instantaneous.
a Examine the distribution of failure times, treating the unit as a component on the aircraft.
b Examine the trend of failures, viewing the air- conditioning system itself as a repairable system.
c Describe clearly the conclusions to be drawn from both these analyses.
Explanation / Answer
The answer of following question is as follows.
The distribution of failure time is cubic in nature.
The trend of failure is bilateral in nature.