737 200 questions
Ok guys and gals I have been in recurrent training the last few days and have found some differences in system information I was given between my current employer and previous one. This has led to some interesting debate on whom or what is correct. The A/C type is the 737 200adv.
Question # 1 what does the Mach trim actually do? Aside from moving the control column back slightly, that we all agree on. Does it provide an extra 70lbs of force available to the pilot for recovery from a mach induced dive? Does it actually move the elevators aft to counter Mach tuck?
Question # 2 The APU requires time for cooling during ground start attempts and although there might be a slight difference in the time off required the question is, is there a time off for cooling required during start attempts in flight? Does this time off get waved just because it may be an emergency and you don’t want to wait 4 min after the first try before trying to start it again?
Question # 3 The APU will automatically abort the start sequence if it doesn’t reach 35% operating speed in what time? I have 60 sec from my old employer and am now being told 90 sec.
Question # 4 The thrust reverser isolation valves have an air ground sensor within the logic for open or closed. Is there two of them, one on the main gear and one on the nose gear?
Thanks folks and if you can give me some links to the info so that I can print it off etc that would be great too.