### Objective Understand how lost communications under IFR is handled. ### Resources - [[FAR 61.65 Instrument Rating Reqs]] - FAR 91.167-187 - [[Risk Management Handbook]] - [[IFH]] / [[IPH]] - [[Instrument ACS]] Section 1.C - [A good case study and analysis](https://aviationnewstalk.libsyn.com/342-n990pt-cirrus-sr22-fatal-accident-at-kbhb-bar-harbor-maine) by [[Max Trescott]] #case-study > [!tip] Pre-Lesson Reading/Homework here: [[~ IRA Pre-Lesson Reading]] ### Builds On [[IRA2.1 Charts and Approach Plates]] [[IRA2.3 Flight Planning and Communications]] ### Schedule Ground 2.0 hr, Sim 1.0 hr ### Lesson Elements - Many aspects of IFR clearances and procedures are in case of lost comms - "after... expect" - "5000' 5 min after departure" - If we had perfect radio communication, these things would not be necessary - However, we need to plan for the situation of radios failing - Concepts and examples in [[Lost Communications]] ![[IFR Radio Comm Part 1 General.jpeg]] ![[IFR Radio Comm Part 2 Two-Way Radio Failure.jpeg]] #### Sim Activity 1. Flight plan from home airport to KPVF 2. Clearance including "climb maintain 3000', expect 4000' 5 minutes after departure" 3. Simulated lost comms ~1 min after takeoff ### Completion Standards Learner understands and can apply lost communications regulations. *Return to [[~ IRA Lesson Plan Outline|Table of Contents]]^*