Question

Correct the two pronoun-related errors in this paragraph:

By 1977, technology had developed to the extent that Dr. Paul MacCready successfully flew a 1.6 mile-long figure of eight in his Gossamer Condor. With the subsequent incorporation of lightweight wonder materials such as carbon fibre and Kevlar, two years later the newly developed Gossamer Albatross achieved what was hitherto thought impossible, and crossed 22 miles of the English Channel at an average height of just five feet!   After more successes in the mid-80s, an American craft, Daedelus, named after Icarus’s dad and piloted by a Greek cycling champ, flew more than 70 miles over the Mediterranean Sea in just under four hours, earning their creators the records for both the furthest distance flown and the longest flight duration, despite the fact that a headwind caused the plane to ditch in the sea just yards away from our intended landing point.

Answer 1

Last sentence: 'earning their creators...' should be 'its creators'. and 'our intended landing point' should be its intended landing point.

Also, you might want to consider whether the last sentence borders on being a run-on, and whether breaking it into two sentences might not enhance readability.