Approach OAT Pitot Tube 
Air Facts
MAY 5, 2025
The ice finally disappeared altogether as we descended into clear skies and above freezing air on our approach to Kirksville. Flying in the clouds in a single engine airplane when the OAT is below freezing is not a good idea! Upon level off at 4,000, I was relieved to note the OAT gauge was showing +3 degrees C.
Pilot Institute
OCTOBER 17, 2024
The following instruments provide useful information on icing: Outside Air Temperature (OAT) gauge. Pitot heat ammeter (starts drawing more current). Ongoing monitoring and a proactive icing detection approach can improve the safety of your IFR flight operations. Heated pitot tubes and static ports.
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