Page 1
Garmin GNC 250XL GPS Navigator w/ VHF COM When a Garmin GNC 250XL GPS Navigator with VHF COM is installed in the Cirrus Design SR20, this Supplement is applicable and must be inserted in the Supplements Section (Section 9) of the Cirrus Design SR20 Pilot’s Operating Handbook.
Section 1 - General The airplane is equipped with a Garmin GNC 250XL GPS Navigator with VHF COM, herein referred to as the “Navigator.” The GNC 250XL utilizes the Global Positioning System (GPS) satellite network to derive the airplane’s position (latitude, longitude, and altitude) and the altitude digitizer to enhance the altitude calculation.
SR20 Supplements Section 2 - Limitations 1. The Garmin GNC 250XL Pilot's Guide and Reference, P/N 190- 00067-60, Revision A dated March 1997 (or later appropriate revision) must be immediately available to the flight crew whenever navigation is predicated on the use of the GPS Navigator.
Cirrus Design Supplements SR20 Section 4 - Normal Procedures Normal operating procedures are outlined in the Garmin GNC 250XL Pilot's Guide and Reference, P/N 190-00067-60, Revision A dated March 1997 (or later appropriate revision). Activate GPS 1. Battery Master Switch ............... ON 2.
Jeppesen NavData database all contained in the GNC 250XL control unit mounted in the center console. The GPS is designated ‘GPS 2.’ Also integrated into the GNC 250XL control unit is a VHF communications receiver, designated COM 2. All tuning and display controls for the GPS and COM are located in the GNC 250XL control/ display in the center console.
Page 6
(COM) transceiver. The transceiver and integrated controls are mounted in the Garmin GNC 250XL unit and are designated COM2. The transceiver receives all narrow- and wide- band VHF communication transmissions transmitted within a frequency range of 118.000 MHz to 136.975 MHz in 25.0 kHz steps (720 channels).