FltPlan is offering its free aircraft weight-and-balance program via its website and mobile apps for more than 400 models. Since the program was launched 18 months ago, pilots have created 38,000 customized aircraft weight-and-balance profiles. In the past six months alone, FltPlan has added 165 aircraft models, ranging from a Cessna 150 to a Gulfstream G280. The cross-platform format works on the web, as well as on iOS, Android and BlackBerry devices, FltPlan said.