I've just spent an hour hand-flying the 727-100 in the pattern... what a sweet-handling aircraft - "youse guys" done good!
I'm a big fan of ultra-complex sims, and do love the older technology. My other favorite aircraft is the RFP 747-200.
On my first flight, I carefully worked my way through tutorial #1, and was extremely impressed by the attention to detail in the systems. I did find a few minor issues. Some may be bugs, some mistakes on my part, but I thought I'd make a list for your perusal.
Per pages in the QRH:
3-2 APU Startup
When selecting the APU fire switch to "test" no bell.
3-3 Check oxygen on FE upper panel
Both cockpit and PAX oxygen gauges read zero
When opening main entrance door with SHIFT-E, also see indicator lights for the Airstair on the FE annunciator panel, even though the Airstair is not down in external view.
3-6 Test antiskid
The antiskid test lights (or the switch) appear to be reversed. When moving the switch to INBRD position the OUTBRD lights illuminate, and vice-versa.
3-8 Flight Director Test
When I get to the section where the FD control switch is placed in MAN G/S position, the G/S and VOR/LOC lights illuminate yellow. The QRH says they should be green. When swinging the course selector left and right of the lubber line, the FD command bars do indeed follow, but to get them to level requires setting the course pointer about 10 degrees left of the lubber line, rather than right on it. The HDG test of the bars does work OK, with the command bars leveling when the HDG bug is exactly on the lubber line.
3-12 Brakes and pressures
Both pneumatic and hydraulic brake pressure gauges on the F/O panel read zero. never see hydraulic pressure on this particular gauge, either before or after engine start, even with good hydraulic pressure on both the A and B systems on the FE panel gauges.
3-13 Engine start
I do not seem to be able to get more than 10 PSI on the duct pressure gauge, with the APU supplying bleed air, even with both packs off. Once the engines start, duct pressure goes up to 30+
When I place any engine start switch to GRD, I hear the F/O voice say "Number (x) to ground" then "oil pressure rising", as the QRH indicates, but he never says "19 percent" when N2 reaches that point. When I open the fuel valve on the pedestal the engine lights off, he then says "N1" followed immediately by "EGT"
(I'm using the default F/O voice #3 - haven't tried the others)
None of these items are show-stoppers. All in all the 727 is a magnificent piece of work. Congrats to all who were involved in her design!