What was found
STRONG ODOR COMING THROUGH THE CABIN AND FLIGHT DECK, INCREASED DURING TAKE OFF WITH HIGH POWER SETTING. THE ODOR KEPT INCREASING DURING CLIMB. ONCE AT LEVEL OFF, THE ODOR DECREASE MOMENTARILY, BUT AS SOON AS WE STARTED TO DESCEND THE STRONG ODOR CAME BACK AND DIDNT DISAPPEAR. FAS ALSO REPORTED THE ODOR AND HAD SYMPTOMS OF ITCHING THROAT AND EYES. FLIGHT 5419.