A display system configured for displaying critical aeronautical information on a display in an aircraft that is not certified for displaying critical aeronautical information, the display system comprising: a mounting adapter (104, 304) configured to mount, in an aircraft cockpit, a personal electronic device (106, 306) having a PED display wherein the PED is not certified to display critical aeronautical information, the mounting adapter comprising a surface with an actuatable covering that is configured to be overlaid on the PED display, and an actuation source configured to actuate the covering; and an application server, comprising one or more processors, the application server configured to execute one or more modules that generate critical aeronautical information, transmit the generated critical aeronautical information to the PED for display on the PED display, determine whether a problem exists with the image displayed on the PED display, and enable the actuation source to cause the covering to annunciate a message indicating that a problem exists with the image displayed on the PED display when it is determined that a problem exists; wherein: the mounting adapter (104, 304) further comprises an imaging device configured to capture an image of the PED display; the mounting adapter (104, 304) is further configured to transmit the image of the PED display to the application server; and the application server is further configured to review the image from the PED display to determine whether a problem exists with the image displayed on the PED display. a mounting adapter (104, 304) configured to mount, in an aircraft cockpit, a personal electronic device (106, 306) having a PED display wherein the PED is not certified to display critical aeronautical information, the mounting adapter comprising a surface with an actuatable covering that is configured to be overlaid on the PED display, and an actuation source configured to actuate the covering; and an application server, comprising one or more processors, the application server configured to execute one or more modules that generate critical aeronautical information, transmit the generated critical aeronautical information to the PED for display on the PED display, determine whether a problem exists with the image displayed on the PED display, and enable the actuation source to cause the covering to annunciate a message indicating that a problem exists with the image displayed on the PED display when it is determined that a problem exists; wherein: the mounting adapter (104, 304) further comprises an imaging device configured to capture an image of the PED display; the mounting adapter (104, 304) is further configured to transmit the image of the PED display to the application server; and the application server is further configured to review the image from the PED display to determine whether a problem exists with the image displayed on the PED display. the mounting adapter (104, 304) further comprises an imaging device configured to capture an image of the PED display; the mounting adapter (104, 304) is further configured to transmit the image of the PED display to the application server; and the application server is further configured to review the image from the PED display to determine whether a problem exists with the image displayed on the PED display.