Original sentence: More trouble was encountered on the Darwin leg so they landed at Batavia,  They were the fourth aircraft to reach Melbourne, in a time of 108 h 13 min 30 s.Their return time of 13 days 6 hr 43 min set a new record
Edited sentence: More trouble was encountered on the Darwin leg so they landed at Batavia, where engineers employed by KLM, who had entered the DC-2, kindly made repairs for them.Their return time of 13½ days set a new record.They were the fourth aircraft to reach Melbourne, in a time of 108 h 13 min 45 s