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AMT Avionics & Electrical Systems Flashcards

6 cards from real AMT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 AMT Avionics & Electrical Systems flashcards as text

  1. What is the significance of an aircraft wiring splice being made in an accessible location?

    Answer: It allows for future inspection and maintenance as required by regulations

    Regulations and best practices require wire splices to be in accessible locations so technicians can inspect, test, and maintain them during scheduled maintenance.

  2. Which type of connector is most commonly used for aircraft avionics wiring connections?

    Answer: MIL-SPEC circular connectors (e.g., MIL-DTL-38999)

    MIL-SPEC circular connectors such as MIL-DTL-38999 are the aviation standard for avionics wiring because of their durability, vibration resistance, and environmental sealing.

  3. What happens to electrical resistance in a wire as its length increases?

    Answer: Resistance increases

    Electrical resistance is directly proportional to wire length — a longer wire has more resistance, which is why wire gauge must be selected based on both current load and run length.

  4. What is the purpose of aircraft wire shielding (shielded cables)?

    Answer: To protect sensitive signals from electromagnetic interference (EMI)

    Shielded cables have a conductive outer layer that is grounded to protect sensitive avionics signals from electromagnetic interference generated by other aircraft systems.

  5. When installing a new avionics component in a US aircraft, which organization's Technical Standard Order (TSO) approval is required?

    Answer: FAA

    The FAA issues Technical Standard Orders (TSOs) that establish minimum performance standards avionics equipment must meet before installation in US-certificated aircraft.

  6. What is the correct method for securing wire bundles in an aircraft to prevent chafing?

    Answer: Approved clamps and cushioned clamps at proper intervals

    Approved cushioned clamps secured at intervals specified in manufacturer data (typically every 12–24 inches) prevent chafing while supporting the wire bundle properly.