What was found
PILOT SELECTED GEAR DOWN DURING FUNCTIONAL CHECK FLIGHT, GEAR INDICATED TWO GREEN FOR LT MAIN & NLG, RED UNSAFE FOR RT MLG. PILOT CYCLED LG SEVERAL TIMES, UNSAFE CONDITION REMAINED. PERFORMED EMERGENCY EXTENSION CHECKLIST & PULLED TEE HANDLE TO BLOW MLG DOWN. RT MLG DID NOT EXTEND, ACFT LANDED WITH LT MAIN & NLG EXTENDED.