Avionics Systems Compliance Flashcards
7 cards from real ASI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Avionics Systems Compliance flashcards as text
What is the primary purpose of a Supplemental Type Certificate (STC) in an avionics installation?
Answer: To certify a change to the type design of an existing certificated aircraft
An STC certifies that a proposed change to the type design of a certificated aircraft meets applicable FAA airworthiness standards.
Under 14 CFR Part 91.411, altimeter systems and altitude reporting equipment must be tested and inspected within the preceding:
Answer: 24 calendar months
14 CFR 91.411 requires altimeter and altitude reporting equipment to be tested and inspected within the preceding 24 calendar months.
An avionics shop discovers that a VHF communication radio has an output power of 18 watts, but the TSO authorization specifies a minimum of 20 watts. The correct ASI action is to:
Answer: Ground the aircraft until the radio meets its TSO specifications
Equipment that does not meet its TSO authorization specifications is not airworthy and the aircraft should be grounded until the deficiency is corrected.
Which organization publishes Minimum Operational Performance Standards (MOPS) used as the technical basis for many avionics TSOs?
Answer: RTCA (formerly Radio Technical Commission for Aeronautics)
RTCA publishes MOPS documents (such as DO-160, DO-178) that serve as the technical standards referenced in many FAA TSOs.
A cockpit display system is installed without an approved flight manual supplement (AFMS). An ASI reviewing the installation should:
Answer: Consider the installation non-compliant because the AFMS is required documentation
An approved flight manual supplement is required documentation for avionics installations and its absence renders the installation non-compliant.
What is the function of HIRF (High-Intensity Radiated Fields) certification testing for avionics?
Answer: To ensure avionics systems maintain safe operation when exposed to external electromagnetic fields
HIRF testing verifies that avionics systems continue to operate safely when exposed to high-intensity electromagnetic radiation from external sources.
An ASI finds that a repair station performed avionics work outside the scope of its FAA-issued operations specifications. This is a violation of:
Answer: 14 CFR Part 145
14 CFR Part 145 governs certificated repair stations and their operations specifications, which define the scope of authorized work.