Tailplane icing can be detected by a(n)

Question

BlackTom AI · Accepted Answer

When assessing tailplane icing, the characteristic symptom to look for is a sudden and uncommanded pitch change that typically indicates a loss of tailplane effectiveness.
Option 1: Gradual uncommanded nose-up pitch. This would suggest a progressive change rather than an abrupt event, and nose-up motion is not the classic immediate cue for tailplane icing.
Option 2: Increase in elevator effectiveness. Tailplane icing generally reduces or disrupts effectiveness due to ice altering the tailplane’s aerodynamic surface, so an increase in effectiveness contradicts the typical effect of icing.
Option 3: Sudden uncommanded nose-down pitch. This corresponds to a loss of tailplane authority, where the tailplane cannot provide the necessary nose-up moment, causing an abrupt nose-down attitude that pilots may observe as a tailplane icing indicator.

Tailplane icing can be detected by a(n) Single choice

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