Critical Path Analysis/Examples

Examples of Critical Path Analysis

Aircraft Turnround

Consider the process of turning round an aeroplane after landing.

The following activities need to be addressed:

$\begin{array}{llll} & \textit{Activity} & \textit{Duration (Minutes)} & \textit {Precedents} \\ \hline \text A & \text{Disembark passengers} & 7 & \\ \text B & \text {Unload baggage} & 10 & \\ \text C & \text {Refuel aircraft} & 12 & \text A \\ \text D & \text {Clean cabin} & 15 & \text A \\ \text E & \text {Load catering requirements} & 6 & \text D \\ \text F & \text {Load baggage} & 12 & \text B \\ \text G & \text {Embark passengers} & 14 & \text C, \text E \\ \text H & \text {Final loading check} & 2 & \text F, \text G \\ \end{array}$

The following CPA network diagrams the above task breakdown.

The critical path is the path consisting of edges $\text A, \text D, \text E, \text G, \text H$.