Cirrus SR20 — Service Bulletins

This Service Bulletin (SB 2X-34-24 R1) provides instructions for the optional upgrade of GPS systems in Cirrus SR20 and SR22 aircraft equipped with Avidyne Entegra Primary Flight Displays. It details the installation of a WAAS kit, which includes the installation of WAAS antennas and GPS Navigator hardware upgrades. The bulletin is applicable to specific serial numbers of both aircraft models and outlines the necessary compliance steps, parts required, and estimated man-hours for installation. The bulletin emphasizes that compliance is optional and provides guidance for ensuring proper installation and functionality of the upgraded systems.

• This Service Bulletin applies to Cirrus SR20 serial numbers 1337-1877 and SR22 serial numbers 0435-2749.
• Installation of the WAAS kit is optional but recommended for improved GPS functionality.
• Estimated man-hours for installation range from 11 to 46 hours depending on the kit and aircraft configuration.
• PFD software must be at least version 6.2.2 for compliance with this bulletin.
• Specific parts and kits are required for different serial numbers and configurations.