Piper APACHE PA-23-235 Service Manual page 162

f. Adjust the top and bottom locking pins (3 and 17) to allow adequate clearance between the fuselage
door frame and the pins using appropriate tools.
g. Operate the door several times to insure proper fit, positive locking and free movement of all parts.
h. Remove the inside door handle and install the trim panels by snapping them in place.
i. Install the inside door handle. Secure the handle by pushing in on the trim panel around it and
installing the locking clip (24).
j. On airplanes with Serial Numbers 27-2505 and up, install the armrest with attaching bolts.
k. Install the window trim molding with attaching screws.
1. Install the locking trim knob (26).
4-64. STRUCTURAL REPAIRS.
CAUTION: CONTROL SURFACE SKINS MUST BE REPLACED IF THEY SUSTAIN DAMAGE
OR EXHIBIT CRACKS.
Structural repair methods used may be made in accordance with the regulations set forth in FAA
Advisory Circular 43.13-1A. To assist in making repairs, Figure 4-18 identifies the material and
dimensions of the tubing used with the construction of the fuselage frame. Figures 4-19 and 4-20
identify the type and thickness of skin structure used. Never make a skin replacement or patch from a
material thinner than the original skin. Original material and thickness is recommended and must result
in a surface which is as strong as, or stronger than, the original skin. However, flexibility must be
retained so that the surrounding areas will not receive extra stress.
When making major structural repairs, other than using factory manufactured parts, it is recommended
the manufacturer be contacted. No major alterations are recommended without contacting the
manufacturer. Stabilator skins and ribs aft of the main spar are manufactured using a structural adhesive,
which prevents skin and rib replacement in these areas. If structural adhesive has been applied between
the ribs and skins, contact the manufacturer for recommended alternatives to skin or rib replacement.
4-65. CHECKING CONTROL SURFACE BALANCE. The movable control surfaces of the PA-23-250
have been balanced at time of installation at the factory and normally need not be rebalanced unless the
surfaces have been repainted or repaired. Should it become necessary to check the balance of the control
surfaces, the procedures given in paragraphs 4-66 and 4-67 may be used.
IV - STRUCTURES
PIPER AZTEC SERVICE MANUAL
1H8
07/15/06