What was found
SEVERE TURBULENCE ENCOUNTERED DURING CRUISE AT FL 390 FOR APPROX 4 SECONDS, SPEED MACH .81 VIOLENT BUT MINOR PITCH AND ROLL DEVIATIONS RESULTING IN AUTOPILOT DISCONNECT. DEVIATIONS +/- 15 KNOTS. ACCOMPLISHED AMM TASK 05-51-17-200-801-A FOR EXCESSIVE TURBULENCE. ACMS LOAD REPORT 15/35 REPORTS VRTA LOADS ARE ACCEPTABLE AND DO NOT REQUIRE FURTHER INSPECTIONS. ACCOMPLISHED TASK 05-51-44-200-801-A FOR THE PITCH AND ROLL LOAD. NO FURTHER INSPECTIONS NOTED. NO LOAD 15/35 REPORT AUTO GENERATED. AFS SYSTEM TEST OK, PER AMM 22-96-00-740-801-A. A/C OK FOR SVC.