Beech 90 Series

TTP B1-L3 ATA 57 Beech 90 Series B2-L1 Wings The King Air wing assem b l y consists of the center section and t w o outboard wing panels . The center section and outboard wing assem b lies are of semimonocoque b o x const r uction. Both center section spars are I-beam sections b uilt up from aluminum e xt r uded tee caps, w ebbing and stiffeners. Similar const r uction is used in the outboard wing spars, e xcept a combination of aluminum e xt r usion and fo r med U-channel mem bers comprise the main spar caps, w hile those of the rear spar are composed of fo r med aluminum angles and cap strips. WING P ANELS The wing panel consists of three subst r uctures: the I-beam spa r , the leading edge assem b l y , and the main b o x assem b l y. The wing panel leading edge assem b l y and the main b o x assem b l y are joined to the main spar b y contin u ...

TTP B1-L3 ATA 56 Beech 90 Series B2-L1 Windows The King Air for w ard windshields are fo r med from t w o-p l y glass in an int e g ral aluminum frame. The t w o glass plies are bonded t o gether with a center po l yvi n yl sheet that co n tains the fine wire heating g rids. The windshields are electrostatical l y  coated and cu r rent-production windshields are sur f ace sealed. All the side wind o ws are const r ucted from ac r ylic plastic. WINDSHIELDS   The electrical l y heated laminated glass windshield is subject to the g radual process of delamination due to the effect of chemical action and differentials of temperature and pressure incu r red during pressurized flights at v a r ying altitudes and under v a r ying w eather conditions. This delamination is not detrimental to the st r uctural int e g rity of the windshiel d , b ut ...