iversal Navigation UNS-1A:Multi-Sensor Navigation . •Sistem. The systeeWas initarted -and*Approved'inaCcordance with AC- ' 20-136 dated.9,42-68, 4 ACA,3-12-2A for theMounting.of the equipment. See MidcOast AviatiOn;:InC.-.-COMplipnce Report-AC840006, dated 6-30-89. • - . Operation teating,of.,the