What was found
AIRCRAFT TOOK OFF FOLLOWING RUN-UP AND TAXI IN 4-5 INCHES OF SNOW. GEAR RETRACT OK. RETURNED FOR LANDING AND GEAR DOOR WOULD NOT OPEN. GEAR UP LANDING WITH DAMAGE. RAISED NOSE, PRIED DOORS OPEN, GEAR FELL OUT. APPARENTLY, ICE CAUSED DOORS TO RETRACT PAST SEAL AND JAM AFTER CLOSURE.