Gulfstream Aerospace issued a maintenance and operations letter on Monday to all Gulfstream operators stressing that the “freedom of flight control movement is the ultimate indicator the gust lock is fully released for all Gulfstream models.” The letter, MOL-14-0024, is a follow-on to another sent on June 13 in the wake of the May 31 Gulfstream GIV-SP accident near Boston, reminding “operators of the importance of adhering to Airplane Flight Manual (AFM) procedures to confirm flight control integrity and freedom of movement…