What was found
LOUD THUMPING HEARD AND FELT CLIMBING THROUGH 5000MSL INCREASING NOSE UP PITCH ABOVE 5 MADE IT WORSE LOWERING GEAR CAUSED ABNORMAL INDICATION AND NOISE TO DISSAPEAR.-REF. TSM 05-50-00-810-801-A PERFORMED DETAIL INSPECTION AND OPS CHECK OF ALL FLIGHT CONTROLS. FOUND ALL FLIGHT CONTROLS INPUT WITHIN LIMITS CHECKED NOSE GEAR DOORS (AFT) WITH PLAY PERFORMED LUBRACTION OF AFT GEAR DOORS, OK TO CONTINUE SERVICE. NO OTHER DEFECTS NOTED. IAW AMM 12-22-32 NOTED FLYAWAY KIT WAS INCORRECTLY SECURED, RESECURED FLYAWAY KIT. IAW TI 5414-1603