Complex sentence: After the introduction of the more economical (both operationally and logistically) Boeing 767-223SF, in March 2010, First Air retired and removed their two Boeing 727-233 aircraft from their fleet.
Split into simpler sentences: After the introduction of the more economical (both operationally and logistically) Boeing 767-223SF. In March 2010 First Air retired and removed their 2 Boeing 727-233 aircraft from their fleet.