Garmin GPS 155XL Pilot's Manual & Reference

Also see for GPS 155XL: Maintenance manual Installation manual Installation manual

105The SUA settings page with ‘other’ airspaces dis-abled and the altitude buffer set to 500 feet.The SUA settings page with all airspace alertsenabled and the altitude buffer set to 100 meters.SECTION6UNIT SETTINGSSUA SettingsAltitude BufferThe Special Use Airspace settings page will allow you to turn the controlled/restricted airspace message alerts on or off. This will not affect the alerts listed on thenearest page. It will simply turn off the warning message when you are approaching ornear an SUA. Warnings can be turned on/off for the following airspaces:class B/cta: ICAO control area moa: Military operations areaclass C/tma: ICAO Terminal Control Area other: Other areas includes: alert,rstcd: Restricted areas caution, danger, training, warningSUA warnings for prohibited airspace cannot be turned off. The ‘alt’ field,located at the bottom of the SUA settings page, is an altitude buffer which ‘expands’the vertical range of the SUA, so you will be notified if you are within a certain rangeof an SUA. For example, if the buffer is set at 500 feet, and you are more than 500 feetabove or below an SUA, you will not be notified with an alert message; if you are lessthan 500 feet above or below an SUA and projected to enter it, you will be notifiedwith an alert message. The default setting for the altitude buffer is 200 feet.To set the warnings or change the altitude buffer:1. Press and hold M, and use O to display the SUA settings page.2. Press C.3. Rotate O to highlight the field you would like to change.4. Use K to change to ‘on’ or ‘off’.5. To change the altitude buffer, highlight the buffer value, and use K and O to change thedata. Press E to accept.6. Press C to complete.