Explained: A float plane changed course to avoid a storm before crashing on a Washington island, injuring 11

A Kenmore Air float plane crashed on Sucia Island near Washington's border with Canada, injuring all 11 people aboard

DHC-3 Otter

A model of seaplane made by de Havilland Aircraft of Canada

MH-65 Dolphin

A type of helicopter used by the U.S. Coast Guard for rescues

NTSB

National Transportation Safety Board, the federal agency investigating the crash

100-hour inspection

A required maintenance check for aircraft after every 100 hours of flight

Flightradar24

A flight tracking website used to trace the plane's path before the crash