From hobbyspace.com about the latest Falcon 9 launch:
" A first stage engine shut down prematurely (just before staging) but had
no effect on the mission as the other 8 engines made up the difference. The
booster also failed to make a successful landing on a sea platform. This
was the fifth flight of this booster."
That was after a previous launch attempt aborted due to slightly high power.
Wonderful demonstration of engine-out fault tolerance, but it does look
like the rocket is showing some wear and tear after 5 flights. What does
this do to their economics if stages need an overhaul/have an increased
chance of loss of vehicle after only 5 flights?