What was found
FLAPS DEPLOY ASYMMETRICALLY FROM 20 DEGREES - 30 DEGREES, INDICATING SLIGHTLY ABOVE 30 DEGREES WITH A RIGHT ROLL UPON DEPLOYMENT, & NO FLAP ASYMMETRIC LIGHT ILLUMINATES. FLAP OPERATION CHECKS & INSPECTION ON GND REVEALED NO DEFECTS. AFTER CONDUCTING FLIGHT TEST AT 165KTS, ROLL CB PULLED, FLAPS 10 SELECTED, AIRPLANE BANKS RIGHT 25 DEGREES IN 10 SECONDS. FLAPS SELECTED 20, AIRPLANE ROLLS RIGHT 15 DEGREES IN 10 SECONDS. FINALLY FLAPS SELECTED 30 DEGREES, AIRPLANE ROLLS RIGHT MORE THAN 35 DEGREES IN 10 SECONDS. INSPECTION BY MX FOUND RT FLAP CABLE CORRODED & BROKEN AT SWAGGED END. INSPECTION OF THE LT FLAP CABLE REVEALED CORROSION AT THE SAME POINT, BUT STILL INTACT.