Which of the following could potentially compromise an effective tactile inspection?

The choice related to not physically touching the aircraft surfaces is correct because tactile inspections rely heavily on the ability to feel the surface condition of the aircraft. The tactile inspection process entails using one's hands to assess texture, temperature, and other physical characteristics that may indicate the presence of ice, snow, or other contaminants. If an inspector does not physically touch the surfaces, they will miss critical indicators that could lead to an inadequate assessment of whether the aircraft is properly de-iced or safe for operation.

Meanwhile, using gloves might offer some protection, but it typically does not interfere with the tactile assessment unless the gloves are excessively thick or poorly designed. Performing inspections in low-light conditions can make it more difficult to see surface details but doesn't eliminate the ability to feel for irregularities. Lastly, ensuring that only trained personnel conduct the inspection is vital for safety and effectiveness, as they will be knowledgeable about the proper techniques and procedures for effective tactile inspections. This highlights the importance of actual physical contact in assessing the aircraft's readiness for flight.