1. When selecting NEXT WAYPOINT on the LAT REV page, if the waypoint you enter has a crossing restriction, the restriction gets deleted.2. When above the profile in the descent, the intercept circle should change from pink to white when the spoilers are extended. I'm not seeing this work consistently. Sometimes it stays pink, other times it will alternate all on it's own. Is there some logic other than the spoiler position built in to the display.3. When the OAT is set to -98C on the ground, we get 3 level 1 alerts AIR SYS 1/2/3 PRESS LOW. It's probably outside of the aircraft operating envelope, but I just thought I'd throw that in there. No harm, no foul.4. When DC Bus 2 has failed, the #2 reverser still operates normally. This shouldn't be so.5. What are the requirements for the ACTIVATE SEC* prompt to be displayed on the secondary flightplan page? I find that it sometimes disappears, and I'm thus unable to activate it. It's most annoying after I've planned a secondary arrival runway, and ATC assigns that runway, and I have to go fiddle with the primary flightplan because I can't activate the secondary. What gives?If it helps, the waypoint predictions for the SECondary route are all blank, and the ETA and EFOB on the SEC prog page are also blank.6. This somewhat resembles problem 5. ON some flights, the FMS will randomly dump the performance data. This USUALLY happens after the T/D. A picture of the WEIGHT INIT page is below. The result is that PROF and FMS SPD will disconnect, I have no waypoint predictions, and the APProach page is COMPLETELY blank. This is rather frustrating, as I can't reliably reproduce it. I typically have to enter a lower cruise altitude in the FMC, then do some random button pushing before the performance database is available again. Again, I'm unable to consistently reproduce the problem or the fix. Is ANYBODY else out there seeing this problem?Paul

Id also like to add that i had a TR1 FAIL tonight and noticed it understandably caused a number of Level 1 alerts. However the most interesting was BUS DC 1 OFF which had the following consequences, some of which worked when they shouldnt have.WING ANTI-ICE INOPERATIVE (Apparently still worked as indicated on the AIR page)ALTITUDE ALERT AURAL WARNING INOP (well NO aural alerts were available, no altitude callouts, no AP Disc alarm)HYD 1 PRESSURE INDICATION INVALIDAUTO GROUND SPOILERS INOPERATIVE (Armed the spoilers prior to landing and they did in fact work)ENG 1 REVERSE INOPERATIVE (reversers worked normally)ENG 3 REVERSE INOPERATIVE (reversers worked normally)Perhaps because of programming limitations or something of the sort why PMDG didnt model these system degradation? Anyhoo, im still happy with it :(

Have to agree with the FMC Dumping performance data, not sure what it has to do with the Flight level on the perf init page but setting a lower alt fixes the problem. This has happened a couple of times, last time was after reaching TOC I lost the 1 Hyd system and had to return to UBBB.Rob

5. What are the requirements for the ACTIVATE SEC* prompt to be displayed on the secondary flightplan page? I find that it sometimes disappears, and I'm thus unable to activate it. It's most annoying after I've planned a secondary arrival runway, and ATC assigns that runway, and I have to go fiddle with the primary flightplan because I can't activate the secondary. What gives?Paul

Hi Paul, you have to be in HDG Mode (not in NAV!), to activate the sec flt plan.Point 4: you are right, this should not be possible anymore.Tom M

Thanks for the info Tom. I knew there was something I had to be missing. Now if only the other issues can be sorted.Rob, do you use failures? I usually fly with 4 failure selected.Bryan, I hope PMDG can fix those problems next time they swing around to the MD project.Paul

Regarding the FMC dumping data, Yep always fly with at least 1 failure per 10 hours but I think somethings up with the PMDG FMC logic or I'm not fully understanding how the real machine works.Rob