What was found
SMOKE AND FUMES DETECTED IN MID CABIN AREA, DUE TO SMOKE AND FUMES REPORTED IN CABIN. GATE RETURN, CREW REPORTED ELECTRICAL OR RUBBER ODOR & HAZE IN CABIN BETWEEN DOORS 2R AND 3R ON TAXI ACCOMPLISHED AMM 05-51-58-800-801-C3 THROUGH STEP 2(F) OF INITIAL OPERATIONAL CHECKS. NO FAULTS FOUND. PERFORMED SMOKE/ODOR IN FLT DK/ CABIN CONDITIONAL INSPECTION TASK 05-51-58-800-801-C3 UP TO AND INCLUDING STEPS 1.C.2.S. VERIFIED IN FLT DECK AND BETWEEN DOOR 3R & 4R, HAZY SMOKE & SYKDROL ODOR WITH ONLY RT ENG ON & RT PACK ON. OPENED RT PACK AND RT WHEEL WELL AREA AND INSPECTED FOR EVIDENCE OF SKYDROL. LT MLG UPLOCK-OPERATED SEQUENCE VALVE HAD EVIDENCE OF LEAKING ONTO LT MLG DOOR. CLEANED AREA & TIGHTENED B-NUTS GOING TO VALVE. CYCLED DOORS FOUR TIMES & NO LEAKS NOTED IAW AMM TASK 32-32-10-020-801. OPENED ENG 1 FOR OIL LEAKS IAW AMM TASK 05-51-58-800-801-C3 STEPS 1.D.1 M,N &O. NO LEAKS NOTED. OPENED E2 FOR LEAK CK. R & R AFT CABIN RECIRC AIR FILTERS, PSEU LOCKED OUT CLOSED FOR FERRY FLT IAW MEL 3611BZ.