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northridge

737 engine start documentation

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I have a feeling that I am going to feel a fool shortly, but I have to ask:Where on earth in the manuals is the procedure for starting the engines?The Normal Procedures pdf goes from asking for start clearance to After Start.I

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I'm not sure either but try this (all terms I used can be found in the manual chapter 07_systems_operation_...)first verify this:-parking brake set-engine start levers OFF-throttles set to idlefor starting bleed air configuration (air coming from the APU to spool up the engines):- APU start- APU bleed on- Eng1 and 2 bleed off- isolation valve open or auto- left and right packs off.- check if bleed air pressure indicator L and R are risen.Starting engines:- set L or R engine start switch to GRD (now you should hear the engine spool. If not, you don't have bleed air pressure)- monitor engine N1 rpm: as soon as it passes 20%:- engine start lever up. Engine should spool up- verify engine start switch cuts out by itsselfrepeat last 4 steps for other engine.after start- eng 1 and 2 on busses.- eng1 bleed on- APU bleed off (verify dual bleed inidcation goes off. Dual bleed indication is there to warn you: if you apply more thrust then idle, you can blow your APU)- eng2 bleed on- isolation valve auto- both packs auto- APU offI wrote this down from my memory so I hope it's correct.In real life, some switching order might be different and some more stuff is monitored but this should get the job done.Best Regards,Bert Van Bulck

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Hi,<<- monitor engine N1 rpm: as soon as it passes 20%:- engine start lever up. Engine should spool up>>it's N2 (not N1)And there quite a few good PMDG 737 checklists available on the web (I use Tim Metzinger's).Kind regards,Bruno

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Thank you both. I have several questions regarding my PMDG C&D scenario:1: Gen 1 & 2 and Apu Gen 1 & 2 switches are down - not in the upper Off position: they will click up or down further but come straight back again, but never go into the Off position.and2: Gnd Power switch is On - it won

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>Thank you both. >>I have several questions regarding my PMDG C&D scenario:>>1: Gen 1 & 2 and Apu Gen 1 & 2 switches are down - not in the>upper Off position: they will click up or down further but>come straight back again, but never go into the Off position.>and--> if you see the APU power lights go off, that means that the genmerators are on bus = OK.>2: Gnd Power switch is On - it won

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Thanks rocketfs for your helpful reply: now I understand why things are that way.Thanks for the link too - I have already printed it out.And it is a fine addon - I don't know why I took so long in flying her.

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