Please let us know if you have feedbackDive Brief:UPS has retired its MD-11 fleet after a deadly November crash featuring the aircraft model and a subsequent grounding of the fleet, the company announced in Q4 earnings results Tuesday. MD-11s made up about 9% of UPS' air fleet prior to their retirement, with the aircraft primarily being used domestically, per Cirrus Global Advisors. Much of the MD-11 capacity will be replaced with Boeing 767 aircraft over the next year or so, UPS CEO Carol Tomé said in an earnings call. Dive Insight:After UPS moved to ground its MD-11 fleet, the carrier made operational adjustments to keep volume flowing during the peak season despite reduced capacity. UPS incurred about $50 million in incremental lease costs to secure capacity after the MD-11 fleet grounding, the CFO said.