An American Airlines Boeing 767-300, registration N390AA performing flight AA-957 (actual dep Aug 5th) from Miami, FL to Santiago, had reached cruise level 310 about 25 minutes into the flight when the crew decided to return to Miami due to a faulty bleed air valve in the left hand engine (CF6).
The crew requested emergency services to check the brakes after landing. The aircraft landed safely on Miami’s runway 08R with emergency services on standby about one hour after turning around.
A passenger reported the captain announced a faulty bleed air valve in the left hand engine as cause of their return. Due to crew duty time limitation the flight was cancelled, the passengers now expect to depart for Santiago Friday afternoon with a delay of 17.5 hours.