1. Presented to: Icing Weather Information Exchange Location: NCAR, Boulder, CO By: Mark Mutchler Date: November 2013 Federal Aviation Administration Using Data Linked Aircraft Sensed MET Information to Determine Icing Conditions

2. 2 Federal Aviation Administration November 2013 FAA Chief Counsel, Letter of Interpretation January 16 th, 2009 “Flight in known icing conditions by aircraft not approved and equipped for such operations presents a significant safety hazard because by the time the ice adheres to the aircraft, it may be too late for the pilot to take actions to assure the further safety of the flight.” Possible Response A shift from the practice of “Encounter & Escape” to one of “Identify & Avoid” “The NTSB has held on a number of occasions that known icing conditions exist when a pilot knows or reasonably should know about weather reports in which icing conditions are reported or forecast.” Possible Response Make more reports available as well as improve forecast products

3. Using Data Linked Aircraft Sensed MET Information to Determine Icing Conditions 3 Federal Aviation Administration November 2013 Switching Gears from “Encounter & Escape” to “Identify & Avoid” -Better tools to identify icing conditions (observations) -Better tools for reporting icing conditions (forecast output) -Improved tools are needed to garner the trust of the GA pilot community to ultimately avoid icing conditions

4. Using Data Linked Aircraft Sensed MET Information to Determine Icing Conditions 4 Federal Aviation Administration November 2013 How do aircraft sensed observations fit into the puzzle?

5. Using Data Linked Aircraft Sensed MET Information to Determine Icing Conditions 5 Federal Aviation Administration November 2013 The Problem Atmospheric data, collected by aircraft mounted sensors, is not readily available to users in a timely manner to allow for operational decisions to be made as they pertain to known icing conditions. Research Objective To identify a method or methods in which aircraft mounted sensors can provide timely and accurate data which will allow for real-time operational decisions to be made as they pertain to operations in and near known icing conditions.

6. Using Data Linked Aircraft Sensed MET Information to Determine Icing Conditions 6 Federal Aviation Administration November 2013 Questions Moving Forward Can we reasonably expect that the research will result in a safer NAS? How can the research fit into other research initiatives (i.e., MICRO)? What are the next steps?