Revenue passenger miles. Revenue passenger miles (or RPM) measures demand for air transport. Itâs calculated as the number of revenue passengers multiplied by the total distance traveled. Itâs also called airline âtraffic.â. An increase in RPM is positive for an airline company. It means that more passengers are using their service.
Definition. An armpit lump is a swelling or bump under the arm. A lump in the armpit can have many causes. These include swollen lymph nodes, infections, or cysts.
Longevity of a Lump. Bumps near the breast or in the armpit that are caused by cysts, an infection, shaving or a reaction to deodorant often heal after a few days or weeks. Armpit lumps that are persistent and do not heal or decrease in size for a longer period of time should be assessed by a medical professional.