What was found
BUFFET FELT FIVE MINUTES AFTER CLIMB-OUT AT APPROXIMATELY 12,000 FEET, AT CRUISE AIRCRAFT ACCELERATED ONLY TO 232 KNOTS AT 33,000 FEET. RIGHT ENGINE PARAMETERS HIGHER THAN LEFT ENGINE, POST FLIGHT INSPECTION REVEALED AIR TURBINE STARTER DOOR OPEN AND OUTER BYPASS DUCT ACCESS PANEL MISSING ON THE NUMBER ONE ENGINE.