Originally posted by cyriel
However I have been fighting with this fms one whole evening now. How do I get this thing to fly my flightlan? De route itself (lnav) is not the real problem. However I can not get it to climb. It will most of the time complain UNABLE TO CRZ ALT. Even when I set it to 6000ft only. Sometimes the VNAV wil stay on for about 1 min but that is the max. Anyone knows how this works and want to share it with me? I also downloaded a manual but that is not much help.
Ah, the fight between the MCP and FMC, yes, bit of an artform. Can't do this properly from memory, so expect more once I get home, but I recommend
Fred Clausen's 737NG flight tutorial to all 737NG pilots who want to know the basics of FMC work.
First off, *fully* program the FMC; including setting the take-off parameters, setting the ZFW, reserves (5.2 should suffice according to a proper 737 pilot...), cost index (100 usually, but doesn't actually matter, the FMC doesn't listen to this value), calculating the V-Refs (and on and on...).
Prior to take-off, set the initial altitiude (or your cruise altitude if you've received no initial), the runway heading and the low alt max speed (250kts) on the MCP (autopilot). Take-off (or TOGA) then engage LNAV and VNAV, then turn on the A/P. Voila, you should now be fully under FMC control (hopefully...)
Remember to set your final cruise altitude on the MCP *before* you cross the waypoint where you are cleared to cruise, especially if you have the FMC following a SID. The other thing is to read the FMC when you get an FMC message. It'll usually tell you precisely what's wrong.
Read
Fred Clausen's 737NG flight tutorial and the
FMC chapter of the PMDG user manual for more information on programming the FMC and having it fly the plane.
EDIT: Also, great checklist (Excel spreadsheet format) for FS2Crew Pro, but that means it's usable without FS2Crew -
FS2Crew-PMDG 738/739 Flight Notes/ Customizable Checklist