0101peter

Thanks for the feedback.Yes FD is on AP is on MCP set and V2+10.Have tried different Flight plans, databased stored company route and have followed the FMC to load to the letter.I feel that there is something I am missing and not completing the required information but I can not figure out what that may be.Peter

Hi GerryThanks for your reply.Yes autopilot is on and an example would be that the initial MCP altitude set for FL10,000 with steps to FL31,000.I have also tried with MCP set to FL31,000.Tried setting at lower altitudes with still the same results, no arm or activation of VNAV. Autopilot is on. Flight plan executed. no problems at any other point that I am aware of.Peter

Hi everyoneI am new to forum and am asking for help with a problem.I have installed the 'Queen' but have not been able to activate the VNAV.VNAV will not arm or activate following loading of FMC nor will it arm or activate during flight.LNAV is not a problem.When I try and arm VNAV it lists a message 'unable Cruz alt' and this occurs at any altitude set for cruise alt.What am I doing wrong?Peter MurfittNew Zealand

Many thanks BryanPeter

Many thanks TerryPeter

Hi everyoneI am new to forum and to ask for help with a problem i'm having.I have purchased and installed 'The Queen' very recently but have not been able to activate at any stage VNAV.VNAV does not arm or activate following loading of FMC or will it arm or activate in flight.LNAV is no problem.When I try to arm VNAV it lists a message 'unable cruz alt'.What am I doing wrong?Peter MurfittNew Zealand

Hi everyoneI am new to forum and to ask for help with a problem I'm having.Have purchased and installed 'The Queen' but have not been able to activate at any stage VNAV.VNAV does not arm or actvate following loading FMC or will it arm or activate during flight. LNAV is not a problem.When I try to arm VNAV is lists a message 'unable cruz alt'. What am I doing wrong?Thanks for your helpPeter Murfitt