Complex sentence: Its crew members were injured, but there were no fatalities; the pilot walked 13 km to the Alaska Highway and flagged down a truck to call in support for his 5--8 crewmates.
Split into simpler sentences: Its crew members were injured, but there were no fatalities. The pilot walked 13 km to the Alaska Highway and flagged down a truck to call in support for his 5--8 crewmates.