Simplify the following text for a Grade 6 native English-speaking person.
Original: Sikorsky has been designated a Connecticut Aviation Pioneer by the Connecticut State Legislature . The Sikorsky Aircraft Corporation in Stratford , Connecticut , continues to the present day as one of the world 's leading helicopter manufacturers , and a nearby small airport has been named Sikorsky Memorial Airport .
Simplified: Since his death , his office at Sikorsky Aircraft has been left exactly as it was when he died .