Avionics Exam – 39 Questions & Correct Answers | PFD, WAAS/GPS, RNAV, Autopilot, TAWS, NEXRAD & TCAS | 2026/2027

This Avionics Exam 2026/2027 study resource contains approximately 39 exam questions with correct answers covering modern glass-cockpit avionics, Primary Flight Displays (PFD), AHRS, Air Data Computers, GPS/WAAS navigation, RNAV procedures, flight directors, autopilot systems, terrain awareness, airborne weather radar, NEXRAD and TCAS. The concise 8-page document focuses strongly on practical cockpit interpretation and scenario-based avionics questions, making it useful for exam revision and self-testing. No specific course code or university is identified in the uploaded material, so these details are marked as “Not Specified” rather than inferred. The opening section concentrates on Primary Flight Display (PFD) operation and pilot interaction with electronic flight instruments. Topics include fixation, interpretation of the turn coordinator on a PFD, flap operating-range indications, unusual-attitude chevrons and the large red X used to indicate instrument failures. The material also examines AHRS movement sensing across the aircraft's lateral, longitudinal and normal axes and the effects of an Air Data Computer failure on pitot-static information and associated indications. A major portion of the document covers GPS, WAAS and RNAV navigation. Students review the purpose and operation of the Wide Area Augmentation System, GPS accuracy, Receiver Autonomous Integrity Monitoring (RAIM), satellite requirements for instrument navigation and RNAV point-to-point navigation. The questions also cover GPS sensitivity during different phases of flight and operational concepts such as desired track and great-circle routes. The exam then moves into GPS waypoint and approach procedures, including fly-by and fly-over waypoints, sequencing versus non-sequencing modes, OBS mode, Direct-To navigation and Suspend mode at a missed approach point. Students are also tested on LNAV and LNAV/VNAV approaches, LPV requirements, course-deviation indications and considerations associated with leaving prescribed routes when using Direct-To navigation. Another important section addresses flight directors and autopilot operation. The document explains the relationship between flight directors, ADC and AHRS information and describes command-bar indications for pitch and roll guidance. Questions cover autopilot disconnection during runaway trim, manual and automatic reversionary capability, pilot power-management considerations, glide-slope capture and use of the approach mode. These questions emphasize practical system awareness rather than only memorizing component definitions. The document also provides targeted coverage of terrain awareness and warning systems (TAWS). Students review graphical terrain indications, differences presented in the material between TAWS A and TAWS B, and the use of terrain databases. This section connects avionics information displays with situational awareness and terrain-avoidance functions. Weather avionics are addressed through questions on NEXRAD and onboard weather radar. The resource distinguishes delayed, wide-area NEXRAD weather information from aircraft-based radar information available in the aircraft's vicinity. Students also review horizontal and vertical radar scanning, precipitation detection and radar attenuation, including the possibility that strong precipitation may prevent radar energy from adequately depicting cells located behind it. The final section introduces Traffic Collision Avoidance System (TCAS) and radar altimetry. Questions address traffic-alert timing as presented in the source and define a radar altimeter in terms of aircraft height above ground rather than elevation above sea level. Together with the navigation, terrain and weather sections, these questions provide concentrated revision of avionics systems that contribute to flight guidance and situational awareness. The topics in this resource correspond closely with the technical areas covered by the Federal Aviation Administration's Advanced Avionics Handbook (FAA-H-8083-6). This FAA reference discusses electronic flight displays, PFDs, GPS navigation, area navigation, flight management, automated flight control, weather information and advanced cockpit operations, making it an appropriate supporting source for many of the concepts represented in this exam. APA reference: Federal Aviation Administration. (2009). Advanced avionics handbook (FAA-H-8083-6). U.S. Department of Transportation. Relevant Students This document is particularly relevant to Avionics students, Professional Flight students, Aeronautical Science students, Aviation Technology students, Aviation Maintenance students, Commercial Aviation students and Flight Operations students. It can also support student pilots, instrument-rating students, commercial-pilot candidates, flight instructors, avionics technician trainees and pilots transitioning to glass-cockpit aircraft. It is especially useful for students preparing for examinations covering PFD interpretation, AHRS and ADC systems, WAAS and GPS navigation, RAIM, RNAV, waypoint sequencing, LNAV and LPV approaches, autopilot operation, flight directors, TAWS, NEXRAD, airborne weather radar, TCAS and radar altimeters. 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