Part Three - Answer True or False to the following statements (one mark each, total 3 marks) 21 In OEl operations a positive slope means we are climbing faster that the terrain is rising or the terrain is falling away at a rate greater than our descent rate. (1 mark) 22 In OEl operations we can use driftdown technique if we are descending at a rate that will allow us to clear all terrain and obstacles between the position of the engine failure and our en route alternate airport by at least 1000 feet. (1 mark) 23 In performing our maximum weight calculations for FAR 121.189 flight paths on takeoff we must consider (and correct for) the ambient temperature at our departure airport. (1 mark)