A320:
1. Only for any portion of the flight involving Class II navigation (ie. outside of the range of radio navigation aids).
2. No -- only for manual starts. We are taught that it is quite bad to manually abort an auto start, controlled by the FADEC. Generally, let the FADEC handle the start, and the pilot should follow ECAM procedures. There are exceptions for situations which might not be recognized by ECAM nor controlled by FADEC -- such as excessive vibration, etc.
3. "On", "On APU", or "Off".
4. Only switch on the brake fan when directed by ECAM. However, will turn it on momentarily before pulling into the gate area, so to blow out any loose brake dust (which is toxic and a health hazard to ramp staff) in anticipation of possible Brakes Hot ECAM while at the gate. I also understand the optimum brake temperature is about 150 C.
Last edited by KC-10 Driver; 28th June 2005 at 00:16.