Understand how heat and elevation redefine your airplane's limits before you head into the mountains this summer. The post ...

Density Altitude (DA) is pressure altitude corrected for non-standard temperature and humidity, where "high, hot, humid" conditions reduce air density and aircraft performance, a concept often ...

Has density altitude affected your flight plans recently? Do you plan for it when you create those summertime flight plans? I ask because as I write this column Seattle is under a heat advisory.