▁the ▁era . ▁There ▁is ▁a ▁full - s ized ▁door ▁on ▁both ▁sides ▁of ▁the ▁aircraft , ▁while ▁most ▁aircraft ▁of ▁this ▁class ▁have ▁a ▁full - s ized ▁passenger ▁door ▁on ▁one ▁side ▁and ▁a ▁smaller ▁door ▁for ▁the ▁pilot ▁on ▁the ▁other . ▁ ▁The ▁low ▁mounted ▁wing ▁has ▁significant ▁di hed ral ▁and ▁features ▁fully ▁fa ired ▁ret ract ible ▁main ▁landing ▁g ear . ▁The ▁g ear ▁use ▁the ▁trailing - link ▁design ▁for ▁additional ▁travel ▁and ▁so fter ▁" even ▁less - than - per fect " ▁land ings . ▁The ▁ 1 1 2 B , ▁ 1 1 2 TC - A ▁and ▁ 1 1 4 A ▁received ▁larger ▁main ▁whe els ▁and ▁disc ▁bra kes ▁as ▁part ▁of ▁their ▁up gr ades . ▁ ▁Both ▁the ▁wings ▁and ▁fus el age ▁were ▁built ▁using ▁new ▁construction ▁methods ▁that ▁built ▁sections ▁as ▁complete ▁assemb lies ▁rather ▁than ▁riv eting ▁together ▁many ▁individual ▁parts . ▁The ▁aircraft ▁has ▁far ▁fewer ▁riv ets ▁than ▁contemporary ▁designs . ▁As ▁part ▁of ▁the ▁ 1 9 7 6 ▁modifications , ▁various ▁air ▁sc o ops ▁were ▁moved ▁and ▁red es igned , ▁offering ▁a ▁slight ▁performance ▁increase , ▁while ▁the ▁extended ▁wing ▁tips ▁reduced ▁the ▁st all ▁speed ▁from ▁ ▁to ▁ ▁in ▁the ▁ 1 1 2 A . ▁ ▁Early ▁models ▁featured ▁front ▁seat ▁three - point ▁har ness es ▁where ▁the ▁shoulder ▁bel t ▁was ▁fixed ▁to ▁the ▁seat ▁itself . ▁This ▁was ▁found ▁to