What was found
AIRCRAFT WAS GROUNDED: CLT-SJU, AIR RETURNING TO CLT ACCOUNT SMOKE/ CHEMICAL ODOR IN COCKPIT. FLIGHT DID DECLARE EMERGENCY. ACCOMPLISHED J/C 33L00021001 DETERMINED SOURCE OF ODOR TO BE NO.1 ENGINE STREAKING BEHIND FAN BLADES ON LPC INLET VANES. ACCOMPLISHED EA 302151B, NO ODOR PRESENT.