Supersonic Transport Development: Acknowledgement of Complaint from Mrs. McKinnis1964-05-07unknownhttp://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_038_8_47_4_0028The Federal Aviation Agency received a complaint about a Steinway piano from Mrs. Fred L. McKinnis, forwarded by Senator Monroney. The letter was acknowledged and sent to the Sonic Boom Study Field Office for further action.