Question $13$

In $2006,$ the fleet of Spirit Airlines consisted of $18$ A$319$ aircraft, $6$ A$321$ aircraft, and $12$ MD

DC$9-80$ aircraft. Based on this information, answer Question $13-16.$

Q$13.$ What is the IPPCC value for A$320$ family in Spirit Airline's fleet?

Question $14$

What is the IPPCC value for the MD aircraft family in Spirit Airline's fleet?

$0\mathrm{.}167$

$0\mathrm{.}222$

$0\mathrm{.}333$

$0\mathrm{.}667$

Question $16$

What is the IPPC value for the aircraft made by Airbus in Spirit Airline's fleet?

$0\mathrm{.}167$

$0\mathrm{.}222$

$0\mathrm{.}333$

$0\mathrm{.}667$