ESI-500Pilot’s Guide4-1Messages and IndicationsCHAPTER 4MESSAGES AND INDICATIONSFigure 4-1: Display InvaliditiesMessages and indications provide functional status of a display featureor the unit in general. Messages or indications can be shown on thesplash screen, system status screen (battery status), or on the normaloperation screen.Before removing the unit or its system components from the aircraftcontact L3 Customer Service authorized service center or CustomerSupport at (800) 453-0288).IntroductionFigure 4-1 shows the possible invalidity indications. Table 4-1 providesa list of indications and possible display conditions with a descriptionand any corrective action.The ALT, ATT FAIL, IAS, HDG, ATT DEGRADED, and HDGDEGRADED invalidity flash on/off for 5 seconds and then remainson. The invalidity is removed when the condition is resolved.It is recommended to crosscheck other cockpit displays/instrumentsfor errors and/or data inconsistency.Display Conditions
