What was found
(CAN) FLAPS FAIL MESSAGE. FLAPS STOPPED AT 38 DEGREES, FERRY FLIGHT DEFERRAL, LT BPSU FOUND BINDINING, CAUSING DRAG ON FLAP SYS, LT BPSU REPLACED WITH NEW UNIT, BPSU INSTALLED AND FUNCTION CHECKED SERVICEABLE IAW AMM 27-52-01. ALL FLAP DRIVE CABLE CONNECTING DEVICES CHECKED FOR LOCKING AND SECURITY. PRC APPLIED TO LOCKING DEVICES AS REQUIRED.