Ref Nan Yuan, went there November 2012 to have a look at the Tu154 close to and opposite the preserved ac. Quick shot over the fence and moved out quickly. Terminal building is accessible and some eyeball Mk 1 spotting just north of the building is no problem. I would refrain from using a camera here, as this remains a military base. Looking at GE, photography of landing ac should be possible south of the airfield; didn't get around there. Hope this helps.
Some notes from a visit to Nan Yuan on 17-Sep-12, a little dated but should still be applicable:
A productive visit to the Nan Yuan Sunshine Airport on Monday morning 0545-0830 allowed the following night-stoppers to be noted:
China Eastern 737
B-2684, 2685
China United 737
B-2997, 5183, 5209, 5323, 5353, 5399, 5448, 5470, 5547, 5665
The preserved An12 (1058), An24s (B-4064, 4066, CUA-50959) and An2s (3139, 6142) plus some other military bits are still present on the side-road next to the hangar, photos are possible.
The terminal area has had some changes since my last visit several years ago. The maintenance parking area close to the hangar has now been made part of an extended operational ramp connected to the terminal. The terminal itself now has no public landside access to the upper level so all spotting must be done from ground level from either side of the terminal plus there is a view through the central security check area of 3 stands directly in front of the terminal. The views are not photo-friendly from this area with multiple fences and no clear photo opportunites.
After the terminal, the next stop was the southern perimeter road which gives views of the runway and a large ramp containing Tu154s and military 737s, this ramp is not visible from the terminal area. No 154s were operational in the couple of hours I was there although many of them had doors open and people walking around them so I'm sure they are not wfu just yet. To get to this area take the main left turn at the traffic lights when leaving the airport (not the smaller left turn immediately by the gate). Then follow your nose taking left, left, left before ariving at the airport perimeter underneath the runway approach lights on the opposite end of the runway from the terminal. The Tu154s make some nice photos parked in 2 lines although caution must be used as of course this is essentially still a military base. Photos are possible from here of departures from the terminal end (although a little high) and arrivals that land from this end. Any departure photos going from this end are possible as they turn onto the runway.
Military 737s with no titles:
B-4008, 4009, 4052, 4053
Note B-4053 had a large lump on top of the forward fuselage, it's used as a command post aircraft, this flew when I was there. B-4009 was parked outside the mainntenance hangar close to the terminal rather than on this ramp.
First terminal departure was scheduled for 0655 with 9 departures scheduled before 0815, all operated pretty much on time. China Eastern 737 B-5262 was the first arrival at just before 8am
Next stop was the World Park, also in the South West part of Beijing and fairly close to Nan Yuan, taking around 45 mins in the morning traffic. IL62 B-2028 cannot be seen from the outside so a 65 Yaun ticket must be purchased (around GBP 6.50 or 9 USD). Photos of the IL62 are not competition winners due to the poor positioning of a tree and some buildings although a visit on board is possible for an additional 10 Yuan.
