As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PA44 AIRCRAFT HAVE AN OUTER AND INNER SPRING THAT ASSISTS THE NOSE LANDING GEAR EXTENSION. IT IS BELIEVED THAT THE INNER SPRING (PN 67168-000) BROKE DURING FLIGHT. WHEN THE NOSE GEAR IS RETRACTED THIS SPRING IS EXTENDED. WHEN THE SPRING TANG BROKE THE SPRING CONTRACTED AND BOUND UP INSIDE THE OUTER SPRING. THIS PREVENTED THE NOSE GEAR FROM FULLY EXTENDING AND LOCKING. THIS CAUSED THE NOSE GEAR TO COLLAPSE UPON LANDING.