MS33638C (NOTICE-1), MS DRAWING: CASE, INSTRUMENT, FLANGE MOUNTED, AIRCRAFT (04-APR-1998)
MS33638C (NOTICE-1), MS DRAWING: CASE, INSTRUMENT, FLANGE MOUNTED, AIRCRAFT (04-APR-1998)., MS33638C, dated 15 April 1969, is inactive for new design and is
no longer used, except for replacement purposes.