FAA AMT Airframe Test 2026 – 400 Free Practice Questions to Pass the Exam

Choosing option A could seem reasonable since durability can suggest longer lifespan and reduced chances of damage. However, the question specifically mentions "without special enclosing means", which means the wiring is not protected or shielded. This could ultimately lead to increased wear and tear, making durability less of an advantage here.

Option C and D also may seem attractive as they both relate to electrical properties. However, higher conductivity can actually increase the risk of electrical interference, which can be dangerous in an aircraft. And better insulation may not be necessary if the wiring is already installed without special enclosing means.

Overall, option B is the best choice because installing electric wiring without special enclosing means makes it easier to install and maintain, while also reducing weight which is crucial for aircraft. This can save time, money, and improve overall performance.