What was found
GEAR DISAGREE. FOLLOWED THE QRH. GEAR STAYED DOWN. FLT # 4074 CLOSED. REMOVED NOSE LANDING GEAR PIN IAW AMM. PERFORMED OPERATIONAL TEST OF THE LANDING GEAR PSS IAW AMM.. PSS SYSTEM SHOWS IN RIG TEST GOOD. PERFORMED OPERATIONAL TEST OF THE LANDING-GEAR EXTENSION/RETRACTION SYSTEM IAW AMM. OPS CHECK GOOD. PERFORMED FUNCTIONAL CHECK OF THE NLG SHOCK-STRUT-ASSEMBLY EXTENSIONIAW AMM. NO DEFECTS NOTED.