CKAJCA 2 Posted June 4, 2018 Share Posted June 4, 2018 I have just planned a flight using PFPX from EGGD Bristol to EGJJ Jersey in the PMDG737. PFPX has given me a cruise flight level of FL270 (ZFW is 126196). When I input FL270 into ACT PERF INIT 1/2 I get the message UNABLE CRZ ALT which is not too surprising as the Trip level only shows FL218. Have I done something stupid or is there something wrong in PFPX such that it has given me a unachievable FL? Any advice would be appreciated. Regards Colin Link to comment Share on other sites More sharing options...
datguytho 38 Posted June 4, 2018 Share Posted June 4, 2018 The cruising levels PFPX gives you are a bit off sometimes, that's what I experience with other aircraft atleast. However, are you using the default performance profile for the 737? If yes, you might try out one of these as well: http://airlinerperformance.net/aircraft-types/ Not sure if this solves the problem, but as these performance profiles are more accurate it's definitely worth a try. Link to comment Share on other sites More sharing options...
srcooke 422 Posted June 4, 2018 Share Posted June 4, 2018 Colin please post the OFP Link to comment Share on other sites More sharing options...
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