LIGHT TWIN LANDED SUCCESSFULLY WITH PARTIAL NOSE GEAR EXTENSION. BOTH PROPS DAMAGED WHEN GEAR FULLY COLLAPSED.

Narrative

NOSEWHEEL ON PA44-180 PARTIALLY EXTENDED. REVIEWED CHKLIST FOR GEAR FAILURE SEVERAL TIMES. PROCEEDED WITH EMER EXTENSION AND ABRUPT MANEUVERING TO TRY AND FORCE NOSE GEAR TO DOWN AND LOCKED POS. NO SUCCESS. PARTIALLY EXTENDED NOSE GEAR COLLAPSED ON TOUCHDOWN. BOTH PROPS STRUCK PAVEMENT; NO INJURIES. ALL REQUIRED INSPECTIONS WERE COMPILED WITH. MADE APCH WITH PWR FOR SAFETY INSTEAD OF FEATHERING ENGS HIGH TO TRY AND AVOID PROP STRIKE. PULLED MIXTURES TO IDLE CUTOFF IN A NOSE HIGH ATTITUDE JUST BEFORE TOUCHDOWN. PROPS WERE STILL WINDMILLING WHEN NOSE TOUCHED DOWN CAUSING PROP STRIKE. SLID ABOUT 100 YARDS ON MAIN GEAR AND ACFT'S NOSE. STUDENT TURNED OFF FUEL AND ELECTRICS WHILE STOPPING. DEPARTED ACFT; NO FIRE. DECISION TO KEEP ENGS RUNNING WAS FOR PAX SAFETY. WE WERE 200 LBS BELOW MAX GROSS AND SHE DOES NOT GLIDE WELL. A SOFTER LNDG WAS SAFEST AND THERE IS A GAS PWRED HEATER IN THE NOSE CONE. PLT HAD FLOWN 1.2 HRS PREVIOUS TO THIS FLT. HAD 20 HRS IN LAST 30 DAYS IN SAME ACFT; AND 24 HRS MAKE AND MODEL.