Mechanism Analysis of the Impact of COVID-19 on the Whole Process of Aircraft Turnaround Operations

Table 6

Statistical indexes of the duration time of subprocesses on critical path 1 before and after COVID-19.

Indexes (min)	Before				After
	Avg	Std dev	Max	Min	Avg	Std dev	Max	Min
Turnaround time	60.7	1.89	87.7	46	75.9	10.92	100	51.4
De-boarding	8.2	1.22	10.4	5.4	6.7	1.40	9.8	2.9
Cabin cleaning	18.4	4.32	27	11.2	33.4	11.52	58.3	19.2
Boarding	22.3	6.88	45.3	13.7	27.9	12.09	73.9	11