Conversation so far:
What types of incidents have happened to Harrison Ford?
Harrison Ford has had several incidents while piloting aircraft
has Harrison Ford had any accidents or incidents that are noteworthy?
On October 23, 1999, Harrison Ford was involved in the crash of a Bell 206L4 LongRanger helicopter. The helicopter hit the ground and flipped over onto its side

Question: when was the accident he suffered a broken pelvis and ankle?
Self-contained rewrite: when was the accident when Harrison Ford suffered a broken pelvis and ankle?