Page 2-8 400W Series Installation ManualRev. G 190-00356-021. Determine the pilot’s primary view centerline, utilizing the following criteria:a) For aircraft with a basic “T” instrument configuration with the attitude indicator in the uppercenter location, the center of this instrument should be used as the primary view centerline.b) If the basic “T” is offset away from the radio stack with respect to the control yoke or a non-standard instrument cluster is present in the aircraft, the center of the control yoke or stick, inthe neutral position may be used as the primary view centerline.c) If the control yoke/stick is offset from the center of the pilot’s seat, an imaginary lineextended through the center of the pilot’s seat may be used as the primary view centerline.2. Measure the horizontal distance from the primary view centerline to the left or right edge of the400W Series, as appropriate.3. If the 400W Series unit is mounted to the right of the primary instruments, the internal display ofannunciation within the 400W Series unit is considered to be within the acceptable field-of-viewif the following criteria are met:• The left edge of the 400W Series unit is within 11.8 inches of the primary view centerlineand;• the top edge of the 400W Series unit is no lower than the bottom edge of the primary flightinstruments or the unit is line abreast with the affected CDI.4. If the 400W Series unit is mounted to the left of the primary instruments, the internal display ofannunciation within the 400W Series unit is considered to be within the acceptable field-of-viewif the following criteria are met:• The right edge of the 400W Series unit is within 9.2 inches of the primary view center lineand;• the top edge of the 400W Series unit is no lower than the bottom edge of the primary flightinstruments or the unit is line abreast with the affected CDI.If the internal display of annunciation within the 400W Series unit does not meet the criteria foracceptable field-of-view as defined above, an external source selection annunciator must be integrated inthe affected CDI/HSI or an additional annunciator which clearly indicates the CDI/HSI source as VLOCor GPS must be installed within 13.856 inches of the view centerline.NOTEThe entire annunciator must be within 13.856 inches of the view centerline.
