Hi, I`m new to this aircraft and have a problem with the FMC. I was doing a flight from London to Manchester. My cruise altitude was 25,000. The FMC took me to 5000, but when it was required to go to 25,000, it went up so slowly that it would never have the required height at the checkpoint. It got to about 8000 and then made no further climb. Vnav was lit, the FMC was showing 25000 and I had set the altimeter to 25000.Any help would be appreciated.Cheers,David

Hello DavidWelcome to the PMDG 737I think the FMC requires you set altitudes above the transition altitude (default in the US at 18,000) as a flight level, so for 25,000 ft you would enter 250 and push the appropriate key on the FMC/CDU. You should see FL250 show up as the cruise altitude. Have a look at page 21 in section 8 (FMC users manual) for more info. Does this help, let us know.cheers, Nick

Make sure there is a T/C (top of cruise) point somewhere on your navigation display. If there isn't, that means VNAV doesn't know when it should stop. Make sure you've filled out all of the FMC's required pages (first RTE, INIT REF, CLB, CRZ, DES, N1 Limit). Would recommend reading Tim Metzinger's tutorial at avsimNick B.Continental Airlines 737NG Pilothttp://www.precisionmanuals.com/images/forum/800driver.jpg--AMD Athlon XP 3200+ @ 2.2 Ghz (Equal to 2.8 ghz)400W Power supply3x 80 mm Case FansSoyo VIA KT600 Dragon PlusnVidia GeForce FX 5200 128 mb2 x 512 PC400100 GB Western DigitalMicrosoft Sidewinder Precision 2

No, the FMC will take either 250 OR 25000 for FL 250' just like the real FMC ;-)..Best Wishes,[h4]Randy J. Smith[/h4][h3]P M D G's 747-400[/h3][h4]coming to a runway near you[/h4][/font color]Caution! Not a real pilot, but do play one on TV ;-)AMD 64 3200+ | ASUS KV8 DELUXE | GFORCE 5700 ULTRA @535/1000 | Maxtor 6Y080M0 SATA 80 GIG | 512 DDR 400 | Windows Xp Pro | Windows Xp Pro 64 |

Thanks for the replies. I had FL250 in the FMC and I had the Pre-flight check complete. Not sure about top of cruise poin though. I`ll have another go and look at that.Cheers,David

I just checked again and nowhere on my route is there a top of climb marker.What puts that on the route? According to the FMC, my route is complete.Cheers,David

Hello DavidLondon to Manchester isn't that far really, I don't know what loads your carrying but suspect that the aircraft wont be able to make FL250 in the short flight.I have just checked the UK standard route document which has a max alt for the route EGLL EGCC of FL185.Route being EGLL BUZAD/WOBUN DCT WELIN T420 TNT DAYNE2A EGCCI have just set up the flight with a cruise alt of FL250, Gross Wt130.2 and cost index 100, I was at FL250 for 2 minutes before commencing descent to be at DAYNE at 6000.Simonhttp://homepage.ntlworld.com/simon.butler2...usefulfiles.htm

Hi, I tried it again and this time it did have a top of climb mark. It stops climbing and if I give it a nudge manually, in comes into action. It must be something I`m doing. I`ll persevere with it.I found PIC767 hard at first. I`ll just keep on experimenting.Regarding the altitude - I use Radar Contact quite often and they frequently give me an altitude and then bring me down before I get anywhere near it. I assumed that this was something to do with economy, but perhaps not.cheers,David

Small correction: T/C means Top of Climb (often seen as TOC on printed FPs) as T/D is Top of Descent (TOD on FPs).