Inertia Fuel Shutoff Switch: Description and Operation
In the event of a collision, the electrical contacts in the Inertia Fuel Shutoff (IFS) switch will open and the FDM shuts off. To reset the IFS switch, depress the button on top of the IFS switch.
CAUTION: Do not reset the Inertia Fuel Shutoff (IFS) switch until the fuel system has been inspected for leaks.