June 18, 201213 yr I have recently started flying the 737NGX for FSX after a few years of not flying and quite a few years of flying the FS9 version before that. When I tried to manually start the engines for the first time by following the excellent tutorial from Tom Risager they only spooled up to 18.1%, not enough to allow the engines to start. Any idea what I might be doing wrong? I know they have to get to at least 20% and preferably 25%. Any words of wisdom would be gratefully received.
June 18, 201213 yr Make sure the PACK's are switched OFF when starting the engines. Mark Scheerman Boeing 737-6/7/8/900 Ground Engineer
June 18, 201213 yr Is it good practise to just turn the right pack off, or both? Or does it depend on the airline?
June 18, 201213 yr The thing is that the APU cannot support engine start and both packs at the same time. Don't really know if it does with one pack though, haven't tried. I turn them both off anyway. George Golas ---------------------- I hate gravity!
June 18, 201213 yr Usually, its both of them off. You could always turn the respective pack back on after its assosciated engine is started. Robert Schumacher My PC: EVGA GTX 1080 FTW, i7 6700k OC'd to 4.6, ASUS Rog Maximus VIII Hero Mobo, 16GB DDR4 3200 RAM, 2 Intel 750 Series SSDs, Creative Sound Blaster Z.
June 18, 201213 yr You have to turn the packs off for engine start, after you get one engine running you can turn the pack on that side and close the isolation valve and start the other engine if you want to. Vince Lanz ATP RW B737 Pilot
June 18, 201213 yr Hi, a good exercise would be to study the flight crew training manual and learn about engine starting... Best Regards Andrea B.
June 18, 201213 yr At American we used to turn the packs off then start engine #1 then engine #2 then turn thepacks back on. Now we start #2 first close the isolation valve and turn the right pack on that way if we want to single engine taxi the right pack is powered fromthe #2 engine and the left is pawered from the APU. If you want to start one engine and then turn a pack on you need to start #2 first because when you close the isolaton valve APU air can only get to engine #1. Tom Landry
June 20, 201213 yr Duct pressure needs to show 30 PSI or more on the pnuematic panel before engine switches set to start. The APU supply the bleed air to get the N2's spinning, with any of the packs on the duct pressure is reduced due to the demand on a relatively weak pnuematic source. Therefore both packs need to be switched off to raise the duct pressure.
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