What does the 'primary and supporting' method refer to in basic attitude instrument flying?

• A. Grouping instruments by brand
• B. Relying on the attitude indicator
• C. Using autopilot to hold headings only
• D. Grouping different instruments based on task

Answer: (D)

In basic attitude instrument flying, you organize the cockpit by task, using a primary instrument for control and supporting instruments to confirm and monitor. The primary instrument for this task is the attitude indicator, which directly shows pitch and bank and is what you use to keep the aircraft's attitude where you want it. The supporting instruments provide other essential information and cross-check your flight path: altitude and vertical movement (altimeter and vertical speed indicator), airspeed, heading, and turn coordination. This setup reduces workload and increases safety because you’re not relying on a single source; you continuously scan and compare the primary with the supporting instruments to detect and correct any deviations. The idea isn’t about grouping instruments by brand or automation, and it isn’t about using the attitude indicator alone or only letting autopilot hold headings. It’s about organizing instruments by task so you have a clear primary reference and dependable backups.