Page 15 - ICS Siebel 8.1 and Master Template.11.16.15_Neat

Icing

Structural icing occurs on an aircraft whenever supercooled condensed droplets of water make
contact with any part of the aircraft that is also at a temperature below freezing. An inflight
condition necessary for structural icing to form is visible moisture (clouds or raindrops). Icing in
precipitation (rain) is of concern to the remote pilot because it can occur outside of clouds. Aircraft
structural ice will most likely have the highest accumulation in freezing rain which indicates
warmer temperature at a higher altitude. The effects of structural icing on an sUAS are as follows:
o Lift decreases,
o Weight and stalling speed increase for fixed wing, and propellers may stall on rotary wing:
o Thrust decreases; and
o Drag increases.

The pressure of ice pellets as the surface is evidence that there is freezing rain at higher altitudes,
while we snow indicates that the temperature at your altitude is above freezing. A situation
conducive to any icing would be flying in the vicinity of a front.

Remote pilots should avoid flight in conditions that may produce icing. If it appears that ice is
accumulating on the sUAS, it should be recovered immediately to avoid loss of control.

Next Steps:
Instructions: Go to Google Classroom – Day 1 – Quiz- Click to launch quiz and complete. When
complete click submit.

✓ Quiz – complete the quiz for this section before proceeding to Chapter 2.
✓ Student Breakout Groups: Students are encouraged to attend the daily student breakout
groups to work collaboratively with other students to prepare for quiz, prepare flash cards
or study guides in preparation to take the FAA Knowledge Exam.
✓ For more information: Contact instructor and/or click links for online test prep links for
continuous test taking strategies and practice in preparation to take the FAA Knowledge
Exam.

DRONE PART 107 CERTICIFACTION PREPARATION COURSE 15