sentences:  Top of climb
  
  In aviation, the top of climb, also referred to as the TOC or T/C, is the computed transition from the climb phase of a flight to the cruise phase, the point at which the planned climb to cruise altitude is completed.The top of climb is usually calculated by an on-board flight management system and is designed to provide the most economical climb to cruise altitude or to meet some other objective (fastest climb, greatest range, etc.