ESI-2000Pilot’s Guide 1-15DescriptionHEADING (Optional)Heading Tape (refer to Figure 1-7)The heading tape is located at the bottom of the display. The tape moves leftand right following the direction of the aircraft. The tape is a contiguous 360°linear scale. The tape is removed whenever the menu window is opened orif an attitude exceeding +/- 55 degrees of bank or +/- 55 degrees of pitch(unusual attitude).Heading Digital Readout (refer to Figure 1-7)The readout is located above the heading tape and displaysthe aircraft’s current heading referenced to magnetic north. Theheading value has a range of 001° to 360° with a resolution of 1°.The readout is removed whenever the menu window is opened.Heading Index (refer to Figure 1-7)Also known as lubber line, the heading index is a fixed downward pointingarrowhead located at the bottom of the heading digital readout. The headingindex points to the current heading shown on the heading tape and providesthe value shown in the heading readout.Figure 1-7: Heading Elements