I'm having trouble accessing the SUPP NAV DATA page.I found and read both FCOM vol1 and 2 items that refer to getting at the SUPP NAV DATA page and followed the instructions, but I only see the normal REF NAV DATA page.I believe I'm following the rules, ie must be on the ground. I go to the FMC click on INIT/REF button, click the <INDEX LSK L6 , the INIT/REF INDEX page opens I type SUPP into the FMS scratchpad and click the LSK R1 NAV DATA> button and expect to see the SUPP NAV DATA page appear but the REF NAV DATA page comes up. Sooo what'd I do wrong ?TIA

i suppose PMDG didn't simulate that at all . I had the same expeirence as you did

ummm no, they have I believe.Page 1065 of PMDG FCOM vol2 shows a screenshotPage 239 of PMDG FCOM vol1 details how to access it .... I just can't follow the instructions I think :)

hey dude i suppose it is not PMDG's manual It's a real Boeing's FCOM!