Update doc blocks in the airport model
Update doc blocks in the airport model

PHPBenelux/opencfp,localheinz/opencfp,PHPBenelux/opencfp,localheinz/opencfp,PHPBenelux/opencfp,mdwheele/opencfp,GrUSP/opencfp,opencfp/opencfp,GrUSP/opencfp,PHPBenelux/opencfp,opencfp/opencfp,mdwheele/opencfp,mdwheele/opencfp,localheinz/opencfp,opencfp/opencfp,localheinz/opencfp,GrUSP/opencfp,mdwheele/opencfp,GrUSP/opencfp