What was found
AT 2700 AGL, 180 KTS, SELECTED GEAR DOWN, NOSE INDICATED DOWN AND LOCKED BOTH MAINS INDICATED UP. RAN QRH AND USE MANUAL RELEASE, MANUAL EXTENSION. ALL GEAR INDICATED DOWN AND LOCKED. NO OTHER ABNORMAL. R & R RT MLG SELECTOR VALVE REF AMM 32-32-10. OP CK GOOD AT THIS TIME.