Defect
THE DIAPHRAGM MATERIAL OF THE MECHANICAL FUEL PUMPS MAY DETERIORATE AND ALLOW THE DIAPHRAGM TO RUPTURE.
Consequence
FUEL PUMPED THROUGH THE RUPTURED DIAPHRAGM AND OUT OFTHE VENT OPENING COULD RESULT IN A FIRE.
Remedy
INSTALL NEW MECHANICAL FUEL PUMPS WITH IMPROVED DIAPHRAGM MATERIAL AND REVISE WIRING FOR ELECTRIC FUEL PUMP CIRCUITS.