NATA has an FAA Attach Angle AMOC that has a 1000 hour inspection on all but 11" on each side on the forward lower angles, (you still have to inspect that portion of the angles at 200 hours). We sell the AMOC for $350. The AMOC is aircraft specific by serial #. The 1000 hours starts at the date/time of the last inspection.
The old AMOC was to 1000 hours on the upper angles, but you still had to inspect the lower angles at 200 hours. This AMOC is no longer in effect, so you have to inspect all angles at 200 hours per the AD if you don't have the NATA AMOC.
Please contact NATA if you have any questions.
Chuck Marshall Sec/Treas.
2059 Airport Road, Elkhart, IN USA