What was found
SIGNIFICANT NOSE WHEEL SHIMMY ON TAKEOFF AND LANDING. WHEN DESCENDING THROUGH FL200, HEARD A NOISE LIKE THE NOSE GEAR DOOR POPPED OPEN AND HEARD ONE AURAL "HIGH SPEED" WARNING. EICAS FULL OPENED IMMEDIATELY BUT LNDG GEAR WAS UP AND WHITE. UPON EXTENDING GEAR ON FINAL, ALL INDICATIONS NORMAL INSPECTED THE NOSE LANDING GEAR DOOR LINKAGE PER AMM 32-22-00, AMM 32-22-03, AMM32-22-01. PERFORMED GVI FOR NLG EXTENSION/RETRACTION PER AMM 32-32-00. NO DEFECT NOTED. DID A HIGH SPEED RUN HAD A SLIGHT SHIMMY ON THE NLG. SEE AML 110302269 DESCREPANCY FOR FERRY FLIGHT